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| import torch | |
| import gradio as gr | |
| import cv2 | |
| import numpy as np | |
| import random | |
| import numpy as np | |
| from models.experimental import attempt_load | |
| from utils.general import check_img_size, non_max_suppression, \ | |
| scale_coords | |
| from utils.plots import plot_one_box | |
| from utils.torch_utils import time_synchronized | |
| import time | |
| def letterbox(im, new_shape=(640, 640), color=(114, 114, 114), auto=True, scaleup=True, stride=32): | |
| # Resize and pad image while meeting stride-multiple constraints | |
| shape = im.shape[:2] # current shape [height, width] | |
| if isinstance(new_shape, int): | |
| new_shape = (new_shape, new_shape) | |
| # Scale ratio (new / old) | |
| r = min(new_shape[0] / shape[0], new_shape[1] / shape[1]) | |
| if not scaleup: # only scale down, do not scale up (for better val mAP) | |
| r = min(r, 1.0) | |
| # Compute padding | |
| new_unpad = int(round(shape[1] * r)), int(round(shape[0] * r)) | |
| dw, dh = new_shape[1] - new_unpad[0], new_shape[0] - new_unpad[1] # wh padding | |
| if auto: # minimum rectangle | |
| dw, dh = np.mod(dw, stride), np.mod(dh, stride) # wh padding | |
| dw /= 2 # divide padding into 2 sides | |
| dh /= 2 | |
| if shape[::-1] != new_unpad: # resize | |
| im = cv2.resize(im, new_unpad, interpolation=cv2.INTER_LINEAR) | |
| top, bottom = int(round(dh - 0.1)), int(round(dh + 0.1)) | |
| left, right = int(round(dw - 0.1)), int(round(dw + 0.1)) | |
| im = cv2.copyMakeBorder(im, top, bottom, left, right, cv2.BORDER_CONSTANT, value=color) # add border | |
| return im, r, (dw, dh) | |
| names = ['person', 'bicycle', 'car', 'motorcycle', 'airplane', 'bus', 'train', 'truck', 'boat', 'traffic light', | |
| 'fire hydrant', 'stop sign', 'parking meter', 'bench', 'bird', 'cat', 'dog', 'horse', 'sheep', 'cow', | |
| 'elephant', 'bear', 'zebra', 'giraffe', 'backpack', 'umbrella', 'handbag', 'tie', 'suitcase', 'frisbee', | |
| 'skis', 'snowboard', 'sports ball', 'kite', 'baseball bat', 'baseball glove', 'skateboard', 'surfboard', | |
| 'tennis racket', 'bottle', 'wine glass', 'cup', 'fork', 'knife', 'spoon', 'bowl', 'banana', 'apple', | |
| 'sandwich', 'orange', 'broccoli', 'carrot', 'hot dog', 'pizza', 'donut', 'cake', 'chair', 'couch', | |
| 'potted plant', 'bed', 'dining table', 'toilet', 'tv', 'laptop', 'mouse', 'remote', 'keyboard', 'cell phone', | |
| 'microwave', 'oven', 'toaster', 'sink', 'refrigerator', 'book', 'clock', 'vase', 'scissors', 'teddy bear', | |
| 'hair drier', 'toothbrush'] | |
| colors = [[random.randint(0, 255) for _ in range(3)] for _ in names] | |
| def detect(img,model,device,iou_threshold=0.45,confidence_threshold=0.25): | |
| imgsz = 640 | |
| img = np.array(img) | |
| stride = int(model.stride.max()) # model stride | |
| imgsz = check_img_size(imgsz, s=stride) # check img_size | |
| # Get names and colors | |
| names = model.module.names if hasattr(model, 'module') else model.names | |
| # Run inference | |
| imgs = img.copy() # for NMS | |
| image, ratio, dwdh = letterbox(img, auto=False) | |
| image = image.transpose((2, 0, 1)) | |
| img = torch.from_numpy(image).to(device) | |
| img = img.float() # uint8 to fp16/32 | |
| img /= 255.0 # 0 - 255 to 0.0 - 1.0 | |
| if img.ndimension() == 3: | |
| img = img.unsqueeze(0) | |
| # Inference | |
| t1 = time_synchronized() | |
| start = time.time() | |
| with torch.no_grad(): # Calculating gradients would cause a GPU memory leak | |
| pred = model(img,augment=True)[0] | |
| fps_inference = 1/(time.time()-start) | |
| t2 = time_synchronized() | |
| # Apply NMS | |
| pred = non_max_suppression(pred, confidence_threshold, iou_threshold, classes=None, agnostic=True) | |
| t3 = time_synchronized() | |
| for i, det in enumerate(pred): # detections per image | |
| if len(det): | |
| # Rescale boxes from img_size to im0 size | |
| det[:, :4] = scale_coords(img.shape[2:], det[:, :4], imgs.shape).round() | |
| # Write results | |
| for *xyxy, conf, cls in reversed(det): | |
| label = f'{names[int(cls)]} {conf:.2f}' | |
| plot_one_box(xyxy, imgs, label=label, color=colors[int(cls)], line_thickness=2) | |
| return imgs,fps_inference | |
| def inference(img,model_link,iou_threshold,confidence_threshold): | |
| print(model_link) | |
| device = torch.device('cuda:0' if torch.cuda.is_available() else 'cpu') | |
| # Load model | |
| model_path = 'weights/'+str(model_link)+'.pt' | |
| model = attempt_load(model_path, map_location=device) | |
| return detect(img,model,device,iou_threshold,confidence_threshold) | |
| def inference2(video,model_link,iou_threshold,confidence_threshold): | |
| print(model_link) | |
| device = torch.device('cuda:0' if torch.cuda.is_available() else 'cpu') | |
| # Load model | |
| model_path = 'weights/'+str(model_link)+'.pt' | |
| model = attempt_load(model_path, map_location=device) | |
| frames = cv2.VideoCapture(video) | |
| fps = frames.get(cv2.CAP_PROP_FPS) | |
| image_size = (int(frames.get(cv2.CAP_PROP_FRAME_WIDTH)),int(frames.get(cv2.CAP_PROP_FRAME_HEIGHT))) | |
| finalVideo = cv2.VideoWriter('output.mp4',cv2.VideoWriter_fourcc(*'VP90'), fps, image_size) | |
| fps_video = [] | |
| while frames.isOpened(): | |
| ret,frame = frames.read() | |
| if not ret: | |
| break | |
| frame,fps = detect(frame,model,device,iou_threshold,confidence_threshold) | |
| fps_video.append[fps] | |
| finalVideo.write(frame) | |
| frames.release() | |
| finalVideo.release() | |
| return 'output.mp4',np.mean(fps_video) | |
| examples_images = ['data/images/horses.jpg', | |
| 'data/images/bus.jpg', | |
| 'data/images/zidane.jpg'] | |
| examples_videos = ['data/video/input_0.mp4','data/video/input_1.mp4'] | |
| models = ['yolov7','yolov7x','yolov7-w6','yolov7-d6','yolov7-e6e'] | |
| with gr.Blocks() as demo: | |
| gr.Markdown("## YOLOv7 Inference") | |
| with gr.Tab("Image"): | |
| gr.Markdown("## YOLOv7 Inference on Image") | |
| with gr.Row(): | |
| image_input = gr.Image(type='pil', label="Input Image", source="upload") | |
| image_output = gr.Image(type='pil', label="Output Image", source="upload") | |
| fps_image = gr.Number(0,label='FPS') | |
| image_drop = gr.Dropdown(choices=models,value=models[0]) | |
| image_iou_threshold = gr.Slider(label="IOU Threshold",interactive=True, minimum=0.0, maximum=1.0, value=0.45) | |
| image_conf_threshold = gr.Slider(label="Confidence Threshold",interactive=True, minimum=0.0, maximum=1.0, value=0.25) | |
| gr.Examples(examples=examples_images,inputs=image_input,outputs=image_output) | |
| text_button = gr.Button("Detect") | |
| with gr.Tab("Video"): | |
| gr.Markdown("## YOLOv7 Inference on Video") | |
| with gr.Row(): | |
| video_input = gr.Video(type='pil', label="Input Image", source="upload") | |
| video_output = gr.Video(type="pil", label="Output Image",format="mp4") | |
| fps_video = gr.Number(0,label='FPS') | |
| video_drop = gr.Dropdown(choices=models,value=models[0]) | |
| video_iou_threshold = gr.Slider(label="IOU Threshold",interactive=True, minimum=0.0, maximum=1.0, value=0.45) | |
| video_conf_threshold = gr.Slider(label="Confidence Threshold",interactive=True, minimum=0.0, maximum=1.0, value=0.25) | |
| gr.Examples(examples=examples_videos,inputs=video_input,outputs=video_output) | |
| video_button = gr.Button("Detect") | |
| with gr.Tab("Webcam Video"): | |
| gr.Markdown("## YOLOv7 Inference on Webcam Video") | |
| gr.Markdown("Coming Soon") | |
| text_button.click(inference, inputs=[image_input,image_drop, | |
| image_iou_threshold,image_conf_threshold], | |
| outputs=[image_output,fps_image]) | |
| video_button.click(inference2, inputs=[video_input,video_drop, | |
| video_iou_threshold,video_conf_threshold], | |
| outputs=[video_output,fps_video]) | |
| demo.launch() |