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# YOLOv5 🚀 by Ultralytics, GPL-3.0 license
"""
venv requirements:
pip install torch==1.11.0+cu113 torchvision==0.12.0+cu113 torchaudio==0.11.0 --extra-index-url https://download.pytorch.org/whl/cu113
pip3 install cython
pip3 install opencv-python
Train a YOLOv5 model on a custom dataset.
Models and datasets download automatically from the latest YOLOv5 release.
Models: https://github.com/ultralytics/yolov5/tree/master/models
Datasets: https://github.com/ultralytics/yolov5/tree/master/data
Tutorial: https://github.com/ultralytics/yolov5/wiki/Train-Custom-Data
Usage:
$ python path/to/train.py --data coco128.yaml --weights yolov5s.pt --img 640 # from pretrained (RECOMMENDED)
$ python path/to/train.py --data coco128.yaml --weights '' --cfg_model yolov5s.yaml --img 640 # from scratch
"""
import os,argparse, math, random, sys, time, yaml, wandb, inspect
from dataclasses import dataclass, field
from copy import deepcopy
from datetime import datetime, timedelta
from pathlib import Path
import numpy as np
import torch
import torch.distributed as dist
import torch.nn as nn
from torch.cuda import amp
from torch.nn.parallel import DistributedDataParallel as DDP
from torch.optim import SGD, Adam, AdamW, lr_scheduler
from tqdm.auto import tqdm
import collections
import collections.abc
FILE = Path(__file__).resolve()
ROOT = FILE.parents[0] # YOLOv5 root directory
if str(ROOT) not in sys.path:
sys.path.append(str(ROOT)) # add ROOT to PATH
ROOT = Path(os.path.relpath(ROOT, Path.cwd())) # relative
import val # for end-of-epoch mAP
from models.experimental import attempt_load
from models.yolo import Model
from utils.autoanchor import check_anchors
from utils.autobatch import check_train_batch_size
from utils.callbacks import Callbacks
from utils.datasets import create_dataloader
from utils.downloads import attempt_download
from utils.general import (LOGGER, check_dataset, check_file, check_git_status, check_img_size, check_requirements,
check_suffix, check_yaml, colorstr, get_latest_run, increment_path, init_seeds,
intersect_dicts, is_ascii, labels_to_class_weights, labels_to_image_weights, methods,
one_cycle, print_args, print_mutation, strip_optimizer)
from utils.loggers import Loggers
from utils.loggers.wandb.wandb_utils import check_wandb_resume
from utils.loss import ComputeLoss
from utils.metrics import fitness
from utils.plots import plot_evolve, plot_labels
from utils.torch_utils import EarlyStopping, ModelEMA, de_parallel, select_device, torch_distributed_zero_first
LOCAL_RANK = int(os.getenv('LOCAL_RANK', -1)) # https://pytorch.org/docs/stable/elastic/run.html
RANK = int(os.getenv('RANK', -1))
WORLD_SIZE = int(os.getenv('WORLD_SIZE', 1))
currentdir = os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe())))
parentdir = os.path.dirname(currentdir)
sys.path.append(parentdir)
from machine.general_utils import get_datetime, load_cfg, get_cfg_from_full_path
def train(hyp, opt, device, callbacks): # hyp is path/to/hyp.yaml or hyp dictionary
save_dir, epochs, batch_size, weights, single_cls, evolve, data, cfg_model, resume, noval, nosave, workers, freeze = \
Path(opt.save_dir), opt.epochs, opt.batch_size, opt.weights, opt.single_cls, opt.evolve, opt.data, opt.cfg_model, \
opt.resume, opt.noval, opt.nosave, opt.workers, opt.freeze
callbacks.run('on_pretrain_routine_start')
# Directories
w = save_dir / 'weights' # weights dir
(w.parent if evolve else w).mkdir(parents=True, exist_ok=True) # make dir
last, best = w / 'last.pt', w / 'best.pt'
# Hyperparameters
if isinstance(hyp, str):
with open(hyp, errors='ignore') as f:
hyp = yaml.safe_load(f) # load hyps dict
LOGGER.info(colorstr('hyperparameters: ') + ', '.join(f'{k}={v}' for k, v in hyp.items()))
# Save run settings
if not evolve:
with open(save_dir / 'hyp.yaml', 'w') as f:
yaml.safe_dump(hyp, f, sort_keys=False)
with open(save_dir / 'opt.yaml', 'w') as f:
yaml.safe_dump(vars(opt), f, sort_keys=False)
# Loggers
data_dict = None
if RANK in [-1, 0]:
loggers = Loggers(save_dir, weights, opt, hyp, LOGGER) # loggers instance
if loggers.wandb:
data_dict = loggers.wandb.data_dict
if resume:
weights, epochs, hyp, batch_size = opt.weights, opt.epochs, opt.hyp, opt.batch_size
# Register actions
for k in methods(loggers):
callbacks.register_action(k, callback=getattr(loggers, k))
# Config
plots = not evolve and not opt.noplots # create plots
cuda = device.type != 'cpu'
init_seeds(1 + RANK)
with torch_distributed_zero_first(LOCAL_RANK):
data_dict = data_dict or check_dataset(data) # check if None
train_path, val_path = data_dict['train'], data_dict['val']
nc = 1 if single_cls else int(data_dict['nc']) # number of classes
names = ['item'] if single_cls and len(data_dict['names']) != 1 else data_dict['names'] # class names
assert len(names) == nc, f'{len(names)} names found for nc={nc} dataset in {data}' # check
is_coco = isinstance(val_path, str) and val_path.endswith('coco/val2017.txt') # COCO dataset
# Model
check_suffix(weights, '.pt') # check weights
pretrained = weights.endswith('.pt')
if pretrained:
with torch_distributed_zero_first(LOCAL_RANK):
weights = attempt_download(weights) # download if not found locally
ckpt = torch.load(weights, map_location='cpu') # load checkpoint to CPU to avoid CUDA memory leak
model = Model(cfg_model or ckpt['model'].yaml, ch=3, nc=nc, anchors=hyp.get('anchors')).to(device) # create
exclude = ['anchor'] if (cfg_model or hyp.get('anchors')) and not resume else [] # exclude keys
csd = ckpt['model'].float().state_dict() # checkpoint state_dict as FP32
csd = intersect_dicts(csd, model.state_dict(), exclude=exclude) # intersect
model.load_state_dict(csd, strict=False) # load
LOGGER.info(f'Transferred {len(csd)}/{len(model.state_dict())} items from {weights}') # report
else:
model = Model(cfg_model, ch=3, nc=nc, anchors=hyp.get('anchors')).to(device) # create
# Freeze
freeze = [f'model.{x}.' for x in (freeze if len(freeze) > 1 else range(freeze[0]))] # layers to freeze
for k, v in model.named_parameters():
v.requires_grad = True # train all layers
if any(x in k for x in freeze):
LOGGER.info(f'freezing {k}')
v.requires_grad = False
# Image size
gs = max(int(model.stride.max()), 32) # grid size (max stride)
imgsz = check_img_size(opt.imgsz, gs, floor=gs * 2) # verify imgsz is gs-multiple
# Batch size
if RANK == -1 and batch_size == -1: # single-GPU only, estimate best batch size
batch_size = check_train_batch_size(model, imgsz)
loggers.on_params_update({"batch_size": batch_size})
# Optimizer
nbs = 64 # nominal batch size
accumulate = max(round(nbs / batch_size), 1) # accumulate loss before optimizing
hyp['weight_decay'] *= batch_size * accumulate / nbs # scale weight_decay
LOGGER.info(f"Scaled weight_decay = {hyp['weight_decay']}")
g = [], [], [] # optimizer parameter groups
bn = tuple(v for k, v in nn.__dict__.items() if 'Norm' in k) # normalization layers, i.e. BatchNorm2d()
for v in model.modules():
if hasattr(v, 'bias') and isinstance(v.bias, nn.Parameter): # bias
g[2].append(v.bias)
if isinstance(v, bn): # weight (no decay)
g[1].append(v.weight)
elif hasattr(v, 'weight') and isinstance(v.weight, nn.Parameter): # weight (with decay)
g[0].append(v.weight)
if opt.optimizer == 'Adam':
optimizer = Adam(g[2], lr=hyp['lr0'], betas=(hyp['momentum'], 0.999)) # adjust beta1 to momentum
elif opt.optimizer == 'AdamW':
optimizer = AdamW(g[2], lr=hyp['lr0'], betas=(hyp['momentum'], 0.999)) # adjust beta1 to momentum
else:
optimizer = SGD(g[2], lr=hyp['lr0'], momentum=hyp['momentum'], nesterov=True)
optimizer.add_param_group({'params': g[0], 'weight_decay': hyp['weight_decay']}) # add g0 with weight_decay
optimizer.add_param_group({'params': g[1]}) # add g1 (BatchNorm2d weights)
LOGGER.info(f"{colorstr('optimizer:')} {type(optimizer).__name__} with parameter groups "
f"{len(g[1])} weight (no decay), {len(g[0])} weight, {len(g[2])} bias")
del g
# Scheduler
if opt.cos_lr:
lf = one_cycle(1, hyp['lrf'], epochs) # cosine 1->hyp['lrf']
else:
lf = lambda x: (1 - x / epochs) * (1.0 - hyp['lrf']) + hyp['lrf'] # linear
scheduler = lr_scheduler.LambdaLR(optimizer, lr_lambda=lf) # plot_lr_scheduler(optimizer, scheduler, epochs)
# EMA
ema = ModelEMA(model) if RANK in [-1, 0] else None
# Resume
start_epoch, best_fitness = 0, 0.0
if pretrained:
# Optimizer
if ckpt['optimizer'] is not None:
optimizer.load_state_dict(ckpt['optimizer'])
best_fitness = ckpt['best_fitness']
# EMA
if ema and ckpt.get('ema'):
ema.ema.load_state_dict(ckpt['ema'].float().state_dict())
ema.updates = ckpt['updates']
# Epochs
start_epoch = ckpt['epoch'] + 1
if resume:
assert start_epoch > 0, f'{weights} training to {epochs} epochs is finished, nothing to resume.'
if epochs < start_epoch:
LOGGER.info(f"{weights} has been trained for {ckpt['epoch']} epochs. Fine-tuning for {epochs} more epochs.")
epochs += ckpt['epoch'] # finetune additional epochs
del ckpt, csd
# DP mode
if cuda and RANK == -1 and torch.cuda.device_count() > 1:
LOGGER.warning('WARNING: DP not recommended, use torch.distributed.run for best DDP Multi-GPU results.\n'
'See Multi-GPU Tutorial at https://github.com/ultralytics/yolov5/issues/475 to get started.')
model = torch.nn.DataParallel(model)
# SyncBatchNorm
if opt.sync_bn and cuda and RANK != -1:
model = torch.nn.SyncBatchNorm.convert_sync_batchnorm(model).to(device)
LOGGER.info('Using SyncBatchNorm()')
# Trainloader
train_loader, dataset = create_dataloader(train_path,
imgsz,
batch_size // WORLD_SIZE,
gs,
single_cls,
hyp=hyp,
augment=True,
cache=None if opt.cache == 'val' else opt.cache,
rect=opt.rect,
rank=LOCAL_RANK,
workers=opt.workers,
image_weights=opt.image_weights,
quad=opt.quad,
prefix=colorstr('train: '),
shuffle=True)
mlc = int(np.concatenate(dataset.labels, 0)[:, 0].max()) # max label class
nb = len(train_loader) # number of batches
assert mlc < nc, f'Label class {mlc} exceeds nc={nc} in {data}. Possible class labels are 0-{nc - 1}'
# Process 0
if RANK in [-1, 0]:
val_loader = create_dataloader(val_path,
imgsz,
batch_size // WORLD_SIZE * 2,
gs,
single_cls,
hyp=hyp,
cache=None if noval else opt.cache,
rect=True,
rank=-1,
workers=workers * 2,
pad=0.5,
prefix=colorstr('val: '))[0]
if not resume:
labels = np.concatenate(dataset.labels, 0)
# c = torch.tensor(labels[:, 0]) # classes
# cf = torch.bincount(c.long(), minlength=nc) + 1. # frequency
# model._initialize_biases(cf.to(device))
if plots:
plot_labels(labels, names, save_dir)
# Anchors
if not opt.noautoanchor:
check_anchors(dataset, model=model, thr=hyp['anchor_t'], imgsz=imgsz)
model.half().float() # pre-reduce anchor precision
callbacks.run('on_pretrain_routine_end')
# DDP mode
if cuda and RANK != -1:
model = DDP(model, device_ids=[LOCAL_RANK], output_device=LOCAL_RANK)
# Model attributes
nl = de_parallel(model).model[-1].nl # number of detection layers (to scale hyps)
hyp['box'] *= 3 / nl # scale to layers
hyp['cls'] *= nc / 80 * 3 / nl # scale to classes and layers
hyp['obj'] *= (imgsz / 640) ** 2 * 3 / nl # scale to image size and layers
hyp['label_smoothing'] = opt.label_smoothing
model.nc = nc # attach number of classes to model
model.hyp = hyp # attach hyperparameters to model
model.class_weights = labels_to_class_weights(dataset.labels, nc).to(device) * nc # attach class weights
model.names = names
# Start training
t0 = time.time()
nw = max(round(hyp['warmup_epochs'] * nb), 100) # number of warmup iterations, max(3 epochs, 100 iterations)
# nw = min(nw, (epochs - start_epoch) / 2 * nb) # limit warmup to < 1/2 of training
last_opt_step = -1
maps = np.zeros(nc) # mAP per class
results = (0, 0, 0, 0, 0, 0, 0) # P, R, mAP@.5, mAP@.5-.95, val_loss(box, obj, cls)
scheduler.last_epoch = start_epoch - 1 # do not move
scaler = amp.GradScaler(enabled=cuda)
stopper = EarlyStopping(patience=opt.patience)
compute_loss = ComputeLoss(model) # init loss class
callbacks.run('on_train_start')
LOGGER.info(f'Image sizes {imgsz} train, {imgsz} val\n'
f'Using {train_loader.num_workers * WORLD_SIZE} dataloader workers\n'
f"Logging results to {colorstr('bold', save_dir)}\n"
f'Starting training for {epochs} epochs...')
for epoch in range(start_epoch, epochs): # epoch ------------------------------------------------------------------
callbacks.run('on_train_epoch_start')
model.train()
# Update image weights (optional, single-GPU only)
if opt.image_weights:
cw = model.class_weights.cpu().numpy() * (1 - maps) ** 2 / nc # class weights
iw = labels_to_image_weights(dataset.labels, nc=nc, class_weights=cw) # image weights
dataset.indices = random.choices(range(dataset.n), weights=iw, k=dataset.n) # rand weighted idx
# Update mosaic border (optional)
# b = int(random.uniform(0.25 * imgsz, 0.75 * imgsz + gs) // gs * gs)
# dataset.mosaic_border = [b - imgsz, -b] # height, width borders
mloss = torch.zeros(3, device=device) # mean losses
if RANK != -1:
train_loader.sampler.set_epoch(epoch)
pbar = enumerate(train_loader)
LOGGER.info(('\n' + '%10s' * 7) % ('Epoch', 'gpu_mem', 'box', 'obj', 'cls', 'labels', 'img_size'))
if RANK in (-1, 0):
pbar = tqdm(pbar, total=nb, bar_format=' {l_bar}{bar:10}{r_bar}{bar:-10b}') # progress bar FIXED TO ALIGN WITH OTHER BAR :)
optimizer.zero_grad()
for i, (imgs, targets, paths, _) in pbar: # batch -------------------------------------------------------------
callbacks.run('on_train_batch_start')
ni = i + nb * epoch # number integrated batches (since train start)
imgs = imgs.to(device, non_blocking=True).float() / 255 # uint8 to float32, 0-255 to 0.0-1.0
# Warmup
if ni <= nw:
xi = [0, nw] # x interp
# compute_loss.gr = np.interp(ni, xi, [0.0, 1.0]) # iou loss ratio (obj_loss = 1.0 or iou)
accumulate = max(1, np.interp(ni, xi, [1, nbs / batch_size]).round())
for j, x in enumerate(optimizer.param_groups):
# bias lr falls from 0.1 to lr0, all other lrs rise from 0.0 to lr0
x['lr'] = np.interp(ni, xi, [hyp['warmup_bias_lr'] if j == 2 else 0.0, x['initial_lr'] * lf(epoch)])
if 'momentum' in x:
x['momentum'] = np.interp(ni, xi, [hyp['warmup_momentum'], hyp['momentum']])
# Multi-scale
if opt.multi_scale:
sz = random.randrange(imgsz * 0.5, imgsz * 1.5 + gs) // gs * gs # size
sf = sz / max(imgs.shape[2:]) # scale factor
if sf != 1:
ns = [math.ceil(x * sf / gs) * gs for x in imgs.shape[2:]] # new shape (stretched to gs-multiple)
imgs = nn.functional.interpolate(imgs, size=ns, mode='bilinear', align_corners=False)
# Forward
with amp.autocast(enabled=cuda):
pred = model(imgs) # forward
loss, loss_items = compute_loss(pred, targets.to(device)) # loss scaled by batch_size
if RANK != -1:
loss *= WORLD_SIZE # gradient averaged between devices in DDP mode
if opt.quad:
loss *= 4.
# Backward
scaler.scale(loss).backward()
# Optimize
if ni - last_opt_step >= accumulate:
scaler.step(optimizer) # optimizer.step
scaler.update()
optimizer.zero_grad()
if ema:
ema.update(model)
last_opt_step = ni
# Log
if RANK in (-1, 0):
mloss = (mloss * i + loss_items) / (i + 1) # update mean losses
mem = f'{torch.cuda.memory_reserved() / 1E9 if torch.cuda.is_available() else 0:.3g}G' # (GB)
pbar.set_description(('%10s' * 2 + '%10.4g' * 5) %
(f'{epoch}/{epochs - 1}', mem, *mloss, targets.shape[0], imgs.shape[-1]))
callbacks.run('on_train_batch_end', ni, model, imgs, targets, paths, plots)
if callbacks.stop_training:
return
# end batch ------------------------------------------------------------------------------------------------
# Scheduler
lr = [x['lr'] for x in optimizer.param_groups] # for loggers
scheduler.step()
if RANK in (-1, 0):
# mAP
callbacks.run('on_train_epoch_end', epoch=epoch)
ema.update_attr(model, include=['yaml', 'nc', 'hyp', 'names', 'stride', 'class_weights'])
final_epoch = (epoch + 1 == epochs) or stopper.possible_stop
if not noval or final_epoch: # Calculate mAP
results, maps, _ = val.run(data_dict,
batch_size=batch_size // WORLD_SIZE * 2,
imgsz=imgsz,
model=ema.ema,
single_cls=single_cls,
dataloader=val_loader,
save_dir=save_dir,
plots=False,
callbacks=callbacks,
compute_loss=compute_loss)
# Update best mAP
fi = fitness(np.array(results).reshape(1, -1)) # weighted combination of [P, R, mAP@.5, mAP@.5-.95]
if fi > best_fitness:
best_fitness = fi
log_vals = list(mloss) + list(results) + lr
callbacks.run('on_fit_epoch_end', log_vals, epoch, best_fitness, fi)
# Save model
if (not nosave) or (final_epoch and not evolve): # if save
ckpt = {
'epoch': epoch,
'best_fitness': best_fitness,
'model': deepcopy(de_parallel(model)).half(),
'ema': deepcopy(ema.ema).half(),
'updates': ema.updates,
'optimizer': optimizer.state_dict(),
'wandb_id': loggers.wandb.wandb_run.id if loggers.wandb else None,
'date': datetime.now().isoformat()}
# Save last, best and delete
torch.save(ckpt, last)
if best_fitness == fi:
torch.save(ckpt, best)
if (epoch > 0) and (opt.save_period > 0) and (epoch % opt.save_period == 0):
torch.save(ckpt, w / f'epoch{epoch}.pt')
del ckpt
callbacks.run('on_model_save', last, epoch, final_epoch, best_fitness, fi)
# Stop Single-GPU
if RANK == -1 and stopper(epoch=epoch, fitness=fi):
break
# Stop DDP TODO: known issues shttps://github.com/ultralytics/yolov5/pull/4576
# stop = stopper(epoch=epoch, fitness=fi)
# if RANK == 0:
# dist.broadcast_object_list([stop], 0) # broadcast 'stop' to all ranks
# Stop DPP
# with torch_distributed_zero_first(RANK):
# if stop:
# break # must break all DDP ranks
# end epoch ----------------------------------------------------------------------------------------------------
# end training -----------------------------------------------------------------------------------------------------
if RANK in (-1, 0):
LOGGER.info(f'\n{epoch - start_epoch + 1} epochs completed in {(time.time() - t0) / 3600:.3f} hours.')
for f in last, best:
if f.exists():
strip_optimizer(f) # strip optimizers
if f is best:
LOGGER.info(f'\nValidating {f}...')
results, _, _ = val.run(
data_dict,
batch_size=batch_size // WORLD_SIZE * 2,
imgsz=imgsz,
model=attempt_load(f, device).half(),
iou_thres=0.65 if is_coco else 0.60, # best pycocotools results at 0.65
single_cls=single_cls,
dataloader=val_loader,
save_dir=save_dir,
save_json=is_coco,
verbose=True,
plots=plots,
callbacks=callbacks,
compute_loss=compute_loss) # val best model with plots
if is_coco:
callbacks.run('on_fit_epoch_end', list(mloss) + list(results) + lr, epoch, best_fitness, fi)
callbacks.run('on_train_end', last, best, plots, epoch, results)
LOGGER.info(f"Results saved to {colorstr('bold', save_dir)}")
torch.cuda.empty_cache()
return results
@dataclass
class TrainOptions:
'''
Default training values
Increase or decrease batch_size, n_gpu, n_workers according to machine specs
'''
'''
python /home/brlab/Dropbox/LM2_Env/YOLOv5/yolov5/train.py
--data /home/brlab/Dropbox/LM2_Env/YOLOv5/datasets/PLANT_Botany_Small/PLANT_Botany_Small.yaml
--project PLANT_Botany
--name Small_Adoxaceae
--weights yolov5x6.pt
--img 1280
--batch 14
--epochs 300
--cache
'''
# Parameters
data: str = '' #', type=str, default=ROOT / 'data/coco128.yaml', help='dataset.yaml path')
project: str = 'runs/train' #', default=ROOT / 'runs/train', help='save to project/name')
name: str = 'exp' #', default='exp', help='save to project/name')
weights: str = 'yolov5x6.pt' #', type=str, default=ROOT / , help='initial weights path')
optimizer: str = 'SGD' #', type=str, choices=['SGD', 'Adam', 'AdamW'], default='SGD', help='optimizer')
epochs: int = 300 #', type=int, default=300)
batch_size: int = 2 #
patience: int = 100 #', type=int, default=100, help='EarlyStopping patience (epochs without improvement)')
save_period: int = 10 #', type=int, default=-1, help='Save checkpoint every x epochs (disabled if < 1)')
imgsz: int = 1024 #', '--img', '--img-size', type=int, default=640, help='train, val image size (pixels)')
workers: int = 8 #', type=int, default=8, help='max dataloader workers (per RANK in DDP mode)')
hyp: str = 'data/hyps/hyp.scratch-low.yaml' #', type=str, default=ROOT / 'data/hyps/hyp.scratch-low.yaml', help='hyperparameters path')
resume: bool = False # ', nargs='?', const=True, default=False, help='resume most recent training')
rect: bool = False # ', action='store_true', help='rectangular training')
cache: bool = True #', type=str, nargs='?', const='ram', help='--cache images in "ram" (default) or "disk"')
freeze: list = field(init=True,default_factory=list) #', nargs='+', type=int, default=[0], help='Freeze layers: backbone=10, first3=0 1 2')
evolve: int = 0 # 100 or 300 ish #', type=int, nargs='?', const=300, help='evolve hyperparameters for x generations')
device: int = '' #', default='', help='cuda device, i.e. 0 or 0,1,2,3 or cpu')
upload_dataset: bool = False
bbox_interval: int = -1
artifact_alias: str = 'latest'
# Recommend using defaults for below:
nosave: bool = False # ', action='store_true', help='only save final checkpoint')
noval: bool = False # ', action='store_true', help='only validate final epoch')
cfg_model: str = '' #', type=str, default='', help='model.yaml path')
noautoanchor: bool = False #', action='store_true', help='disable AutoAnchor')
noplots: bool = False #', action='store_true', help='save no plot files')
bucket: str = '' #', type=str, default='', help='gsutil bucket')
image_weights: bool = False #', action='store_true', help='use weighted image selection for training')
multi_scale: bool = False #' #', action='store_true', help='vary img-size +/- 50%%')
single_cls: bool = False #', action='store_true', help='train multi-class data as single-class')
sync_bn: bool = True #', action='store_true', help='use SyncBatchNorm, only available in DDP mode')
exist_ok: bool = False #', action='store_true', help='existing project/name ok, do not increment')
quad: bool = False #', action='store_true', help='quad dataloader')
cos_lr: bool = False #', action='store_true', help='cosine LR scheduler')
label_smoothing: float = 0.0 #', type=float, default=0.0, help='Label smoothing epsilon')
local_rank: bool = -1 #', type=int, default=-1, help='DDP parameter, do not modify')
new_time: str = field(init=False)
path_to_config: str = field(init=False)
# path_to_model: str = field(init=False)
# path_to_ruler_class_names: str = field(init=False)
# path_to_train_json: str = field(init=False)
# path_to_val_json: str = field(init=False)
# dir_images_train: str = field(init=False)
# dir_images_val: str = field(init=False)
# dir_images_test: str = field(init=False)
# dir_out: str = field(init=False)
base_architecture: str = field(init=False)
cfg: str = field(init=False)
w_and_b_key: str = field(init=False)
w_and_b_project: str = field(init=False)
entity: str = field(init=False)
def __post_init__(self) -> None:
'''
Setup
'''
self.new_time = get_datetime()
self.base_architecture = self.weights.split('.')[0]
self.freeze = [0]
'''
Configure names
'''
dir_home = os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
path_cfg_private = os.path.join(dir_home,'PRIVATE_DATA.yaml')
self.cfg_private = get_cfg_from_full_path(path_cfg_private)
self.path_to_config = dir_home
self.cfg = load_cfg(self.path_to_config)
if self.cfg['leafmachine']['component_detector_train']['model_options']['name'] is not None:
self.name = self.cfg['leafmachine']['component_detector_train']['model_options']['name']
self.name = "__".join([self.name,self.base_architecture,self.new_time])
# if self.cfg['leafmachine']['component_detector_train']['dir_out'] is None:
# self.dir_out = "__".join([['leafmachine']['component_detector_train']['plant_or_archival'], self.new_time, self.name])
# else:
# self.dir_out = self.cfg['leafmachine']['component_detector_train']['dir_out']
else:
self.name = "DEFAULT_NAME"
self.name = "__".join([self.name,self.base_architecture,self.new_time])
# if self.cfg['leafmachine']['component_detector_train']['dir_out'] is None:
# self.dir_out = "__".join(["leaf_seg", self.new_time, self.name])
# self.dir_out = os.path.join('models', self.dir_out)
# else:
# self.dir_out = self.cfg['leafmachine']['component_detector_train']['dir_out']
'''
Weights and Biases Info
https://wandb.ai/site
'''
if self.cfg_private['w_and_b']['w_and_b_key'] is not None:
self.w_and_b_key = self.cfg_private['w_and_b']['w_and_b_key']
if self.cfg['leafmachine']['component_detector_train']['plant_or_archival'] == 'PLANT':
if self.cfg_private['w_and_b']['plant_component_detector_project'] is not None:
self.w_and_b_project = self.cfg_private['w_and_b']['plant_component_detector_project']
elif self.cfg['leafmachine']['component_detector_train']['plant_or_archival'] == 'ARCHIVAL':
if self.cfg_private['w_and_b']['archival_component_detector_project'] is not None:
self.w_and_b_project = self.cfg_private['w_and_b']['archival_component_detector_project']
elif self.cfg['leafmachine']['component_detector_train']['plant_or_archival'] == 'LANDMARK':
if self.cfg_private['w_and_b']['landmark_component_detector_project'] is not None:
self.w_and_b_project = self.cfg_private['w_and_b']['landmark_component_detector_project']
elif self.cfg['leafmachine']['component_detector_train']['plant_or_archival'] == 'ARM':
if self.cfg_private['w_and_b']['arm_component_detector_project'] is not None:
self.w_and_b_project = self.cfg_private['w_and_b']['arm_component_detector_project']
if self.cfg_private['w_and_b']['entity'] is not None:
self.entity = self.cfg_private['w_and_b']['entity']
'''
Model Options
'''
# Parameters
if self.cfg['leafmachine']['component_detector_train']['model_options']['data'] is not None:
self.data = self.cfg['leafmachine']['component_detector_train']['model_options']['data']
if self.cfg['leafmachine']['component_detector_train']['model_options']['project'] is not None:
self.project = self.cfg['leafmachine']['component_detector_train']['model_options']['project']
if self.cfg['leafmachine']['component_detector_train']['model_options']['name'] is not None:
self.name = self.cfg['leafmachine']['component_detector_train']['model_options']['name']
if self.cfg['leafmachine']['component_detector_train']['model_options']['weights'] is not None:
self.weights = self.cfg['leafmachine']['component_detector_train']['model_options']['weights']
if self.cfg['leafmachine']['component_detector_train']['model_options']['optimizer'] is not None:
self.optimizer = self.cfg['leafmachine']['component_detector_train']['model_options']['optimizer']
if self.cfg['leafmachine']['component_detector_train']['model_options']['batch_size'] is not None:
self.batch_size = self.cfg['leafmachine']['component_detector_train']['model_options']['batch_size']
if self.cfg['leafmachine']['component_detector_train']['model_options']['epochs'] is not None:
self.epochs = self.cfg['leafmachine']['component_detector_train']['model_options']['epochs']
if self.cfg['leafmachine']['component_detector_train']['model_options']['patience'] is not None:
self.patience = self.cfg['leafmachine']['component_detector_train']['model_options']['patience']
if self.cfg['leafmachine']['component_detector_train']['model_options']['save_period'] is not None:
self.save_period = self.cfg['leafmachine']['component_detector_train']['model_options']['save_period']
if self.cfg['leafmachine']['component_detector_train']['model_options']['imgsz'] is not None:
self.imgsz = self.cfg['leafmachine']['component_detector_train']['model_options']['imgsz']
if self.cfg['leafmachine']['component_detector_train']['model_options']['workers'] is not None:
self.workers = self.cfg['leafmachine']['component_detector_train']['model_options']['workers']
if self.cfg['leafmachine']['component_detector_train']['model_options']['hyp'] is not None:
self.hyp = self.cfg['leafmachine']['component_detector_train']['model_options']['hyp']
if self.cfg['leafmachine']['component_detector_train']['model_options']['resume'] is not None:
self.resume = self.cfg['leafmachine']['component_detector_train']['model_options']['resume']
if self.cfg['leafmachine']['component_detector_train']['model_options']['rect'] is not None:
self.rect = self.cfg['leafmachine']['component_detector_train']['model_options']['rect']
if self.cfg['leafmachine']['component_detector_train']['model_options']['cache'] is not None:
self.cache = self.cfg['leafmachine']['component_detector_train']['model_options']['cache']
if self.cfg['leafmachine']['component_detector_train']['model_options']['freeze'] is not None:
self.freeze = self.cfg['leafmachine']['component_detector_train']['model_options']['freeze']
if self.cfg['leafmachine']['component_detector_train']['model_options']['evolve'] is not None:
self.evolve = self.cfg['leafmachine']['component_detector_train']['model_options']['evolve']
if self.cfg['leafmachine']['component_detector_train']['model_options']['device'] is not None:
self.device = self.cfg['leafmachine']['component_detector_train']['model_options']['device']
if self.cfg['leafmachine']['component_detector_train']['model_options']['upload_dataset'] is not None:
self.upload_dataset = self.cfg['leafmachine']['component_detector_train']['model_options']['upload_dataset']
# Recommend using defaults for below:
if self.cfg['leafmachine']['component_detector_train']['model_options']['nosave'] is not None:
self.nosave = self.cfg['leafmachine']['component_detector_train']['model_options']['nosave']
if self.cfg['leafmachine']['component_detector_train']['model_options']['noval'] is not None:
self.noval = self.cfg['leafmachine']['component_detector_train']['model_options']['noval']
if self.cfg['leafmachine']['component_detector_train']['model_options']['cfg_model'] is not None:
self.cfg_model = self.cfg['leafmachine']['component_detector_train']['model_options']['cfg_model']
if self.cfg['leafmachine']['component_detector_train']['model_options']['noautoanchor'] is not None:
self.noautoanchor = self.cfg['leafmachine']['component_detector_train']['model_options']['noautoanchor']
if self.cfg['leafmachine']['component_detector_train']['model_options']['noplots'] is not None:
self.noplots = self.cfg['leafmachine']['component_detector_train']['model_options']['noplots']
if self.cfg['leafmachine']['component_detector_train']['model_options']['bucket'] is not None:
self.bucket = self.cfg['leafmachine']['component_detector_train']['model_options']['bucket']
if self.cfg['leafmachine']['component_detector_train']['model_options']['image_weights'] is not None:
self.image_weights = self.cfg['leafmachine']['component_detector_train']['model_options']['image_weights']
if self.cfg['leafmachine']['component_detector_train']['model_options']['multi_scale'] is not None:
self.multi_scale = self.cfg['leafmachine']['component_detector_train']['model_options']['multi_scale']
if self.cfg['leafmachine']['component_detector_train']['model_options']['single_cls'] is not None:
self.single_cls = self.cfg['leafmachine']['component_detector_train']['model_options']['single_cls']
if self.cfg['leafmachine']['component_detector_train']['model_options']['sync_bn'] is not None:
self.sync_bn = self.cfg['leafmachine']['component_detector_train']['model_options']['sync_bn']
if self.cfg['leafmachine']['component_detector_train']['model_options']['exist_ok'] is not None:
self.exist_ok = self.cfg['leafmachine']['component_detector_train']['model_options']['exist_ok']
if self.cfg['leafmachine']['component_detector_train']['model_options']['quad'] is not None:
self.quad = self.cfg['leafmachine']['component_detector_train']['model_options']['quad']
if self.cfg['leafmachine']['component_detector_train']['model_options']['cos_lr'] is not None:
self.cos_lr = self.cfg['leafmachine']['component_detector_train']['model_options']['cos_lr']
if self.cfg['leafmachine']['component_detector_train']['model_options']['label_smoothing'] is not None:
self.label_smoothing = self.cfg['leafmachine']['component_detector_train']['model_options']['label_smoothing']
if self.cfg['leafmachine']['component_detector_train']['model_options']['local_rank'] is not None:
self.local_rank = self.cfg['leafmachine']['component_detector_train']['model_options']['local_rank']
self.project = os.path.join(ROOT,self.project,self.w_and_b_project,self.name) #', default=ROOT / 'runs/train', help='save to project/name')
self.weights = os.path.join(ROOT,self.weights)
self.hyp = os.path.join(ROOT,self.hyp)
def parse_opt(known=False):
parser = argparse.ArgumentParser()
parser.add_argument('--weights', type=str, default=ROOT / 'yolov5s.pt', help='initial weights path')
parser.add_argument('--cfg-model', type=str, default='', help='model.yaml path')
parser.add_argument('--data', type=str, default=ROOT / 'data/coco128.yaml', help='dataset.yaml path')
parser.add_argument('--hyp', type=str, default=ROOT / 'data/hyps/hyp.scratch-low.yaml', help='hyperparameters path')
parser.add_argument('--epochs', type=int, default=300)
parser.add_argument('--batch-size', type=int, default=16, help='total batch size for all GPUs, -1 for autobatch')
parser.add_argument('--imgsz', '--img', '--img-size', type=int, default=640, help='train, val image size (pixels)')
parser.add_argument('--rect', action='store_true', help='rectangular training')
parser.add_argument('--resume', nargs='?', const=True, default=False, help='resume most recent training')
parser.add_argument('--nosave', action='store_true', help='only save final checkpoint')
parser.add_argument('--noval', action='store_true', help='only validate final epoch')
parser.add_argument('--noautoanchor', action='store_true', help='disable AutoAnchor')
parser.add_argument('--noplots', action='store_true', help='save no plot files')
parser.add_argument('--evolve', type=int, nargs='?', const=300, help='evolve hyperparameters for x generations')
parser.add_argument('--bucket', type=str, default='', help='gsutil bucket')
parser.add_argument('--cache', type=str, nargs='?', const='ram', help='--cache images in "ram" (default) or "disk"')
parser.add_argument('--image-weights', action='store_true', help='use weighted image selection for training')
parser.add_argument('--device', default='', help='cuda device, i.e. 0 or 0,1,2,3 or cpu')
parser.add_argument('--multi-scale', action='store_true', help='vary img-size +/- 50%%')
parser.add_argument('--single-cls', action='store_true', help='train multi-class data as single-class')
parser.add_argument('--optimizer', type=str, choices=['SGD', 'Adam', 'AdamW'], default='SGD', help='optimizer')
parser.add_argument('--sync-bn', action='store_true', help='use SyncBatchNorm, only available in DDP mode')
parser.add_argument('--workers', type=int, default=8, help='max dataloader workers (per RANK in DDP mode)')
parser.add_argument('--project', default=ROOT / 'runs/train', help='save to project/name')
parser.add_argument('--name', default='exp', help='save to project/name')
parser.add_argument('--exist-ok', action='store_true', help='existing project/name ok, do not increment')
parser.add_argument('--quad', action='store_true', help='quad dataloader')
parser.add_argument('--cos-lr', action='store_true', help='cosine LR scheduler')
parser.add_argument('--label-smoothing', type=float, default=0.0, help='Label smoothing epsilon')
parser.add_argument('--patience', type=int, default=100, help='EarlyStopping patience (epochs without improvement)')
parser.add_argument('--freeze', nargs='+', type=int, default=[0], help='Freeze layers: backbone=10, first3=0 1 2')
parser.add_argument('--save-period', type=int, default=-1, help='Save checkpoint every x epochs (disabled if < 1)')
parser.add_argument('--local_rank', type=int, default=-1, help='DDP parameter, do not modify')
# Weights & Biases arguments
parser.add_argument('--entity', default=None, help='W&B: Entity')
parser.add_argument('--upload_dataset', nargs='?', const=True, default=False, help='W&B: Upload data, "val" option')
parser.add_argument('--bbox_interval', type=int, default=-1, help='W&B: Set bounding-box image logging interval')
parser.add_argument('--artifact_alias', type=str, default='latest', help='W&B: Version of dataset artifact to use')
opt = parser.parse_known_args()[0] if known else parser.parse_args()
return opt
def main(opt, callbacks=Callbacks()):
# Checks
# if RANK in (-1, 0):
# print_args(vars(opt))
# check_git_status()
# check_requirements(exclude=['thop'])
# Resume
if opt.resume and not check_wandb_resume(opt) and not opt.evolve: # resume an interrupted run
ckpt = opt.resume if isinstance(opt.resume, str) else get_latest_run() # specified or most recent path
assert os.path.isfile(ckpt), 'ERROR: --resume checkpoint does not exist'
with open(Path(ckpt).parent.parent / 'opt.yaml', errors='ignore') as f:
opt = argparse.Namespace(**yaml.safe_load(f)) # replace
opt.cfg_model, opt.weights, opt.resume = '', ckpt, True # reinstate
LOGGER.info(f'Resuming training from {ckpt}')
else:
opt.data, opt.cfg_model, opt.hyp, opt.weights, opt.project = \
check_file(opt.data), check_yaml(opt.cfg_model), check_yaml(opt.hyp), str(opt.weights), str(opt.project) # checks
assert len(opt.cfg_model) or len(opt.weights), 'either --cfg or --weights must be specified'
if opt.evolve:
if opt.project == str(ROOT / 'runs/train'): # if default project name, rename to runs/evolve
opt.project = str(ROOT / 'runs/evolve')
opt.exist_ok, opt.resume = opt.resume, False # pass resume to exist_ok and disable resume
if opt.name == 'cfg_model':
opt.name = Path(opt.cfg_model).stem # use model.yaml as name
opt.save_dir = str(increment_path(Path(opt.project) / opt.name, exist_ok=opt.exist_ok))
# DDP mode
device = select_device(opt.device, batch_size=opt.batch_size)
if LOCAL_RANK != -1:
msg = 'is not compatible with YOLOv5 Multi-GPU DDP training'
assert not opt.image_weights, f'--image-weights {msg}'
assert not opt.evolve, f'--evolve {msg}'
assert opt.batch_size != -1, f'AutoBatch with --batch-size -1 {msg}, please pass a valid --batch-size'
assert opt.batch_size % WORLD_SIZE == 0, f'--batch-size {opt.batch_size} must be multiple of WORLD_SIZE'
assert torch.cuda.device_count() > LOCAL_RANK, 'insufficient CUDA devices for DDP command'
torch.cuda.set_device(LOCAL_RANK)
device = torch.device('cuda', LOCAL_RANK)
dist.init_process_group(backend="nccl" if dist.is_nccl_available() else "gloo")
# Train
if not opt.evolve:
train(opt.hyp, opt, device, callbacks)
if WORLD_SIZE > 1 and RANK == 0:
LOGGER.info('Destroying process group... ')
dist.destroy_process_group()
# Evolve hyperparameters (optional)
else:
# Hyperparameter evolution metadata (mutation scale 0-1, lower_limit, upper_limit)
meta = {
'lr0': (1, 1e-5, 1e-1), # initial learning rate (SGD=1E-2, Adam=1E-3)
'lrf': (1, 0.01, 1.0), # final OneCycleLR learning rate (lr0 * lrf)
'momentum': (0.3, 0.6, 0.98), # SGD momentum/Adam beta1
'weight_decay': (1, 0.0, 0.001), # optimizer weight decay
'warmup_epochs': (1, 0.0, 5.0), # warmup epochs (fractions ok)
'warmup_momentum': (1, 0.0, 0.95), # warmup initial momentum
'warmup_bias_lr': (1, 0.0, 0.2), # warmup initial bias lr
'box': (1, 0.02, 0.2), # box loss gain
'cls': (1, 0.2, 4.0), # cls loss gain
'cls_pw': (1, 0.5, 2.0), # cls BCELoss positive_weight
'obj': (1, 0.2, 4.0), # obj loss gain (scale with pixels)
'obj_pw': (1, 0.5, 2.0), # obj BCELoss positive_weight
'iou_t': (0, 0.1, 0.7), # IoU training threshold
'anchor_t': (1, 2.0, 8.0), # anchor-multiple threshold
'anchors': (2, 2.0, 10.0), # anchors per output grid (0 to ignore)
'fl_gamma': (0, 0.0, 2.0), # focal loss gamma (efficientDet default gamma=1.5)
'hsv_h': (1, 0.0, 0.1), # image HSV-Hue augmentation (fraction)
'hsv_s': (1, 0.0, 0.9), # image HSV-Saturation augmentation (fraction)
'hsv_v': (1, 0.0, 0.9), # image HSV-Value augmentation (fraction)
'degrees': (1, 0.0, 45.0), # image rotation (+/- deg)
'translate': (1, 0.0, 0.9), # image translation (+/- fraction)
'scale': (1, 0.0, 0.9), # image scale (+/- gain)
'shear': (1, 0.0, 10.0), # image shear (+/- deg)
'perspective': (0, 0.0, 0.001), # image perspective (+/- fraction), range 0-0.001
'flipud': (1, 0.0, 1.0), # image flip up-down (probability)
'fliplr': (0, 0.0, 1.0), # image flip left-right (probability)
'mosaic': (1, 0.0, 1.0), # image mixup (probability)
'mixup': (1, 0.0, 1.0), # image mixup (probability)
'copy_paste': (1, 0.0, 1.0)} # segment copy-paste (probability)
with open(opt.hyp, errors='ignore') as f:
hyp = yaml.safe_load(f) # load hyps dict
if 'anchors' not in hyp: # anchors commented in hyp.yaml
hyp['anchors'] = 3
opt.noval, opt.nosave, save_dir = True, True, Path(opt.save_dir) # only val/save final epoch
# ei = [isinstance(x, (int, float)) for x in hyp.values()] # evolvable indices
evolve_yaml, evolve_csv = save_dir / 'hyp_evolve.yaml', save_dir / 'evolve.csv'
if opt.bucket:
os.system(f'gsutil cp gs://{opt.bucket}/evolve.csv {evolve_csv}') # download evolve.csv if exists
for _ in range(opt.evolve): # generations to evolve
if evolve_csv.exists(): # if evolve.csv exists: select best hyps and mutate
# Select parent(s)
parent = 'single' # parent selection method: 'single' or 'weighted'
x = np.loadtxt(evolve_csv, ndmin=2, delimiter=',', skiprows=1)
n = min(5, len(x)) # number of previous results to consider
x = x[np.argsort(-fitness(x))][:n] # top n mutations
w = fitness(x) - fitness(x).min() + 1E-6 # weights (sum > 0)
if parent == 'single' or len(x) == 1:
# x = x[random.randint(0, n - 1)] # random selection
x = x[random.choices(range(n), weights=w)[0]] # weighted selection
elif parent == 'weighted':
x = (x * w.reshape(n, 1)).sum(0) / w.sum() # weighted combination
# Mutate
mp, s = 0.8, 0.2 # mutation probability, sigma
npr = np.random
npr.seed(int(time.time()))
g = np.array([meta[k][0] for k in hyp.keys()]) # gains 0-1
ng = len(meta)
v = np.ones(ng)
while all(v == 1): # mutate until a change occurs (prevent duplicates)
v = (g * (npr.random(ng) < mp) * npr.randn(ng) * npr.random() * s + 1).clip(0.3, 3.0)
for i, k in enumerate(hyp.keys()): # plt.hist(v.ravel(), 300)
hyp[k] = float(x[i + 7] * v[i]) # mutate
# Constrain to limits
for k, v in meta.items():
hyp[k] = max(hyp[k], v[1]) # lower limit
hyp[k] = min(hyp[k], v[2]) # upper limit
hyp[k] = round(hyp[k], 5) # significant digits
# Train mutation
results = train(hyp.copy(), opt, device, callbacks)
callbacks = Callbacks()
# Write mutation results
print_mutation(results, hyp.copy(), save_dir, opt.bucket)
# Plot results
plot_evolve(evolve_csv)
LOGGER.info(f'Hyperparameter evolution finished {opt.evolve} generations\n'
f"Results saved to {colorstr('bold', save_dir)}\n"
f'Usage example: $ python train.py --hyp {evolve_yaml}')
def run(**kwargs):
# Usage: import train; train.run(data='coco128.yaml', imgsz=320, weights='yolov5m.pt')
try:
opts = parse_opt(True)
except:
opts = TrainOptions()
for k, v in kwargs.items():
setattr(opts, k, v)
main(opts)
return opts
if __name__ == "__main__":
dir_home = os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
path_cfg_private = os.path.join(dir_home,'PRIVATE_DATA.yaml')
cfg_private = get_cfg_from_full_path(path_cfg_private)
if cfg_private['w_and_b']['w_and_b_key'] is not None:
w_and_b_key = cfg_private['w_and_b']['w_and_b_key']
path_to_config = dir_home
cfg = load_cfg(path_to_config)
if cfg['leafmachine']['component_detector_train']['plant_or_archival'] == 'PLANT':
if cfg_private['w_and_b']['plant_component_detector_project'] is not None:
w_and_b_project = cfg_private['w_and_b']['plant_component_detector_project']
elif cfg['leafmachine']['component_detector_train']['plant_or_archival'] == 'ARCHIVAL':
if cfg_private['w_and_b']['archival_component_detector_project'] is not None:
w_and_b_project = cfg_private['w_and_b']['archival_component_detector_project']
elif cfg['leafmachine']['component_detector_train']['plant_or_archival'] == 'LANDMARK':
if cfg_private['w_and_b']['landmark_component_detector_project'] is not None:
w_and_b_project = cfg_private['w_and_b']['landmark_component_detector_project']
elif cfg['leafmachine']['component_detector_train']['plant_or_archival'] == 'ARM':
if cfg_private['w_and_b']['arm_component_detector_project'] is not None:
w_and_b_project = cfg_private['w_and_b']['arm_component_detector_project']
if cfg_private['w_and_b']['entity'] is not None:
entity = cfg_private['w_and_b']['entity']
if cfg['leafmachine']['component_detector_train']['model_options']['name'] is not None:
name = cfg['leafmachine']['component_detector_train']['model_options']['name']
project = os.path.join(ROOT,w_and_b_project,w_and_b_project,name)
wandb.init(project=w_and_b_project,name=name, entity=entity)
wandb.config = {
"learning_rate": 0.001,
"epochs": 300,
"batch_size": 14,
# "upload_dataset": opts.upload_dataset,
# "bbox_interval": opts.bbox_interval,
# "artifact_alias": opts.artifact_alias
}
# try:
# opts = parse_opt()
# except:
opts = TrainOptions()
main(opts)