import argparse import json import yaml from torch.utils.data import DataLoader from utils.datasets import * from utils.utils import * def test(data, weights=None, batch_size=16, imgsz=640, conf_thres=0.001, iou_thres=0.6, # for nms save_json=False, single_cls=False, augment=False, model=None, dataloader=None, multi_label=True, verbose=False): # 0 fast, 1 accurate # Initialize/load model and set device if model is None: device = torch_utils.select_device(opt.device, batch_size=batch_size) # Remove previous for f in glob.glob('test_batch*.jpg'): os.remove(f) # Load model google_utils.attempt_download(weights) model = torch.load(weights, map_location=device)['model'] torch_utils.model_info(model) # Fuse # model.fuse() model.to(device) if device.type != 'cpu' and torch.cuda.device_count() > 1: model = nn.DataParallel(model) training = False else: # called by train.py device = next(model.parameters()).device # get model device training = True # Configure run with open(data) as f: data = yaml.load(f, Loader=yaml.FullLoader) # model dict nc = 1 if single_cls else int(data['nc']) # number of classes iouv = torch.linspace(0.5, 0.95, 10).to(device) # iou vector for mAP@0.5:0.95 # iouv = iouv[0].view(1) # comment for mAP@0.5:0.95 niou = iouv.numel() # Dataloader if dataloader is None: path = data['test'] if opt.task == 'test' else data['val'] # path to val/test images dataset = LoadImagesAndLabels(path, imgsz, batch_size, rect=True, single_cls=opt.single_cls) batch_size = min(batch_size, len(dataset)) dataloader = DataLoader(dataset, batch_size=batch_size, num_workers=min([os.cpu_count(), batch_size if batch_size > 1 else 0, 8]), pin_memory=True, collate_fn=dataset.collate_fn) seen = 0 model.eval() _ = model(torch.zeros((1, 3, imgsz, imgsz), device=device)) if device.type != 'cpu' else None # run once coco91class = coco80_to_coco91_class() s = ('%20s' + '%12s' * 6) % ('Class', 'Images', 'Targets', 'P', 'R', 'mAP@.5', 'mAP@.5:.95') p, r, f1, mp, mr, map50, map, t0, t1 = 0., 0., 0., 0., 0., 0., 0., 0., 0. loss = torch.zeros(3, device=device) jdict, stats, ap, ap_class = [], [], [], [] for batch_i, (imgs, targets, paths, shapes) in enumerate(tqdm(dataloader, desc=s)): imgs = imgs.to(device).float() / 255.0 # uint8 to float32, 0 - 255 to 0.0 - 1.0 targets = targets.to(device) nb, _, height, width = imgs.shape # batch size, channels, height, width whwh = torch.Tensor([width, height, width, height]).to(device) # Disable gradients with torch.no_grad(): # Run model t = torch_utils.time_synchronized() inf_out, train_out = model(imgs, augment=augment) # inference and training outputs t0 += torch_utils.time_synchronized() - t # Compute loss if training: # if model has loss hyperparameters loss += compute_loss(train_out, targets, model)[1][:3] # GIoU, obj, cls # Run NMS t = torch_utils.time_synchronized() output = non_max_suppression(inf_out, conf_thres=conf_thres, iou_thres=iou_thres, multi_label=multi_label) t1 += torch_utils.time_synchronized() - t # Statistics per image for si, pred in enumerate(output): labels = targets[targets[:, 0] == si, 1:] nl = len(labels) tcls = labels[:, 0].tolist() if nl else [] # target class seen += 1 if pred is None: if nl: stats.append((torch.zeros(0, niou, dtype=torch.bool), torch.Tensor(), torch.Tensor(), tcls)) continue # Append to text file # with open('test.txt', 'a') as file: # [file.write('%11.5g' * 7 % tuple(x) + '\n') for x in pred] # Clip boxes to image bounds clip_coords(pred, (height, width)) # Append to pycocotools JSON dictionary if save_json: # [{"image_id": 42, "category_id": 18, "bbox": [258.15, 41.29, 348.26, 243.78], "score": 0.236}, ... image_id = int(Path(paths[si]).stem.split('_')[-1]) box = pred[:, :4].clone() # xyxy scale_coords(imgs[si].shape[1:], box, shapes[si][0], shapes[si][1]) # to original shape box = xyxy2xywh(box) # xywh box[:, :2] -= box[:, 2:] / 2 # xy center to top-left corner for p, b in zip(pred.tolist(), box.tolist()): jdict.append({'image_id': image_id, 'category_id': coco91class[int(p[5])], 'bbox': [round(x, 3) for x in b], 'score': round(p[4], 5)}) # Assign all predictions as incorrect correct = torch.zeros(pred.shape[0], niou, dtype=torch.bool, device=device) if nl: detected = [] # target indices tcls_tensor = labels[:, 0] # target boxes tbox = xywh2xyxy(labels[:, 1:5]) * whwh # Per target class for cls in torch.unique(tcls_tensor): ti = (cls == tcls_tensor).nonzero().view(-1) # prediction indices pi = (cls == pred[:, 5]).nonzero().view(-1) # target indices # Search for detections if pi.shape[0]: # Prediction to target ious ious, i = box_iou(pred[pi, :4], tbox[ti]).max(1) # best ious, indices # Append detections for j in (ious > iouv[0]).nonzero(): d = ti[i[j]] # detected target if d not in detected: detected.append(d) correct[pi[j]] = ious[j] > iouv # iou_thres is 1xn if len(detected) == nl: # all targets already located in image break # Append statistics (correct, conf, pcls, tcls) stats.append((correct.cpu(), pred[:, 4].cpu(), pred[:, 5].cpu(), tcls)) # Plot images if batch_i < 1: f = 'test_batch%g_gt.jpg' % batch_i # filename plot_images(imgs, targets, paths, f, model.names) # ground truth f = 'test_batch%g_pred.jpg' % batch_i plot_images(imgs, output_to_target(output, width, height), paths, f, model.names) # predictions # Compute statistics stats = [np.concatenate(x, 0) for x in zip(*stats)] # to numpy if len(stats): p, r, ap, f1, ap_class = ap_per_class(*stats) p, r, ap50, ap = p[:, 0], r[:, 0], ap[:, 0], ap.mean(1) # [P, R, AP@0.5, AP@0.5:0.95] mp, mr, map50, map = p.mean(), r.mean(), ap50.mean(), ap.mean() nt = np.bincount(stats[3].astype(np.int64), minlength=nc) # number of targets per class else: nt = torch.zeros(1) # Print results pf = '%20s' + '%12.3g' * 6 # print format print(pf % ('all', seen, nt.sum(), mp, mr, map50, map)) # Print results per class if verbose and nc > 1 and len(stats): for i, c in enumerate(ap_class): print(pf % (model.names[c], seen, nt[c], p[i], r[i], ap50[i], ap[i])) # Print speeds t = tuple(x / seen * 1E3 for x in (t0, t1, t0 + t1)) + (imgsz, imgsz, batch_size) # tuple if not training: print('Speed: %.1f/%.1f/%.1f ms inference/NMS/total per %gx%g image at batch-size %g' % t) # Save JSON if save_json and map50 and len(jdict): imgIds = [int(Path(x).stem.split('_')[-1]) for x in dataloader.dataset.img_files] f = 'detections_val2017_%s_results.json' % \ (weights.split(os.sep)[-1].replace('.pt', '') if weights else '') # filename print('\nCOCO mAP with pycocotools... saving %s...' % f) with open(f, 'w') as file: json.dump(jdict, file) try: from pycocotools.coco import COCO from pycocotools.cocoeval import COCOeval # https://github.com/cocodataset/cocoapi/blob/master/PythonAPI/pycocoEvalDemo.ipynb cocoGt = COCO(glob.glob('../coco/annotations/instances_val*.json')[0]) # initialize COCO ground truth api cocoDt = cocoGt.loadRes(f) # initialize COCO pred api cocoEval = COCOeval(cocoGt, cocoDt, 'bbox') cocoEval.params.imgIds = imgIds # [:32] # only evaluate these images cocoEval.evaluate() cocoEval.accumulate() cocoEval.summarize() map, map50 = cocoEval.stats[:2] # update to pycocotools results (mAP@0.5:0.95, mAP@0.5) except: print('WARNING: pycocotools must be installed with numpy==1.17 to run correctly. ' 'See https://github.com/cocodataset/cocoapi/issues/356') # Return results maps = np.zeros(nc) + map for i, c in enumerate(ap_class): maps[c] = ap[i] return (mp, mr, map50, map, *(loss.cpu() / len(dataloader)).tolist()), maps, t if __name__ == '__main__': parser = argparse.ArgumentParser(prog='test.py') parser.add_argument('--weights', type=str, default='weights/yolov5s.pt', help='model.pt path') parser.add_argument('--data', type=str, default='data/coco.yaml', help='*.data path') parser.add_argument('--batch-size', type=int, default=16, help='size of each image batch') parser.add_argument('--img-size', type=int, default=640, help='inference size (pixels)') parser.add_argument('--conf-thres', type=float, default=0.001, help='object confidence threshold') parser.add_argument('--iou-thres', type=float, default=0.65, help='IOU threshold for NMS') parser.add_argument('--save-json', action='store_true', help='save a cocoapi-compatible JSON results file') parser.add_argument('--task', default='val', help="'val', 'test', 'study'") parser.add_argument('--device', default='', help='cuda device, i.e. 0 or 0,1,2,3 or cpu') parser.add_argument('--single-cls', action='store_true', help='treat as single-class dataset') parser.add_argument('--augment', action='store_true', help='augmented inference') parser.add_argument('--verbose', action='store_true', help='report mAP by class') opt = parser.parse_args() opt.save_json = opt.save_json or opt.data.endswith(os.sep + 'coco.yaml') opt.data = glob.glob('./**/' + opt.data, recursive=True)[0] # find file print(opt) # task = 'val', 'test', 'study' if opt.task == 'val': # (default) run normally test(opt.data, opt.weights, opt.batch_size, opt.img_size, opt.conf_thres, opt.iou_thres, opt.save_json, opt.single_cls, opt.augment) elif opt.task == 'study': # run over a range of settings and save/plot for weights in ['yolov5s.pt', 'yolov5m.pt', 'yolov5l.pt', 'yolov5x.pt', 'yolov3-spp.pt']: f = 'study_%s_%s.txt' % (Path(opt.data).stem, Path(weights).stem) # filename to save to x = list(range(256, 1024, 32)) # x axis y = [] # y axis for i in x: # img-size print('\nRunning %s point %s...' % (f, i)) r, _, t = test(opt.data, weights, opt.batch_size, i, opt.conf_thres, opt.iou_thres, opt.save_json) y.append(r + t) # results and times np.savetxt(f, y, fmt='%10.4g') # save plot_study_txt(f, x) # plot