mirror of https://github.com/WongKinYiu/yolov7.git
203 lines
10 KiB
Python
203 lines
10 KiB
Python
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import argparse
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import time
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from pathlib import Path
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import os
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import copy
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import cv2
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import torch
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import torch.backends.cudnn as cudnn
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from numpy import random
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from models.experimental import attempt_load
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from utils.datasets import LoadStreams, LoadImages
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from utils.general import check_img_size, check_requirements, check_imshow, non_max_suppression, apply_classifier, \
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scale_coords, xyxy2xywh, strip_optimizer, set_logging, increment_path, save_one_box
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from utils.plots import colors, plot_one_box
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from utils.torch_utils import select_device, load_classifier, time_synchronized
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def detect(opt):
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source, weights, view_img, save_txt, imgsz, save_txt_tidl, kpt_label = opt.source, opt.weights, opt.view_img, opt.save_txt, opt.img_size, opt.save_txt_tidl, opt.kpt_label
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save_img = not opt.nosave and not source.endswith('.txt') # save inference images
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webcam = source.isnumeric() or source.endswith('.txt') or source.lower().startswith(
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('rtsp://', 'rtmp://', 'http://', 'https://'))
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# Directories
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save_dir = increment_path(Path(opt.project) / opt.name, exist_ok=opt.exist_ok) # increment run
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(save_dir / 'labels' if (save_txt or save_txt_tidl) else save_dir).mkdir(parents=True, exist_ok=True) # make dir
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# Initialize
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set_logging()
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device = select_device(opt.device)
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half = device.type != 'cpu' and not save_txt_tidl # half precision only supported on CUDA
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# Load model
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model = attempt_load(weights, map_location=device) # load FP32 model
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stride = int(model.stride.max()) # model stride
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if isinstance(imgsz, (list,tuple)):
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assert len(imgsz) ==2; "height and width of image has to be specified"
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imgsz[0] = check_img_size(imgsz[0], s=stride)
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imgsz[1] = check_img_size(imgsz[1], s=stride)
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else:
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imgsz = check_img_size(imgsz, s=stride) # check img_size
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names = model.module.names if hasattr(model, 'module') else model.names # get class names
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if half:
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model.half() # to FP16
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# Second-stage classifier
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classify = False
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if classify:
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modelc = load_classifier(name='resnet101', n=2) # initialize
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modelc.load_state_dict(torch.load('weights/resnet101.pt', map_location=device)['model']).to(device).eval()
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# Set Dataloader
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vid_path, vid_writer = None, None
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if webcam:
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view_img = check_imshow()
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cudnn.benchmark = True # set True to speed up constant image size inference
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dataset = LoadStreams(source, img_size=imgsz, stride=stride)
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else:
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dataset = LoadImages(source, img_size=imgsz, stride=stride)
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# Run inference
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if device.type != 'cpu':
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model(torch.zeros(1, 3, imgsz, imgsz).to(device).type_as(next(model.parameters()))) # run once
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t0 = time.time()
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for path, img, im0s, vid_cap in dataset:
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img = torch.from_numpy(img).to(device)
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img = img.half() if half else img.float() # uint8 to fp16/32
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img /= 255.0 # 0 - 255 to 0.0 - 1.0
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if img.ndimension() == 3:
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img = img.unsqueeze(0)
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# Inference
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t1 = time_synchronized()
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pred = model(img, augment=opt.augment)[0]
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print(pred[...,4].max())
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# Apply NMS
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pred = non_max_suppression(pred, opt.conf_thres, opt.iou_thres, classes=opt.classes, agnostic=opt.agnostic_nms, kpt_label=kpt_label)
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t2 = time_synchronized()
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# Apply Classifier
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if classify:
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pred = apply_classifier(pred, modelc, img, im0s)
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# Process detections
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for i, det in enumerate(pred): # detections per image
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if webcam: # batch_size >= 1
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p, s, im0, frame = path[i], '%g: ' % i, im0s[i].copy(), dataset.count
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else:
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p, s, im0, frame = path, '', im0s.copy(), getattr(dataset, 'frame', 0)
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p = Path(p) # to Path
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save_path = str(save_dir / p.name) # img.jpg
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txt_path = str(save_dir / 'labels' / p.stem) + ('' if dataset.mode == 'image' else f'_{frame}') # img.txt
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s += '%gx%g ' % img.shape[2:] # print string
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gn = torch.tensor(im0.shape)[[1, 0, 1, 0]] # normalization gain whwh
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if len(det):
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# Rescale boxes from img_size to im0 size
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scale_coords(img.shape[2:], det[:, :4], im0.shape, kpt_label=False)
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scale_coords(img.shape[2:], det[:, 6:], im0.shape, kpt_label=kpt_label, step=3)
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# Print results
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for c in det[:, 5].unique():
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n = (det[:, 5] == c).sum() # detections per class
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s += f"{n} {names[int(c)]}{'s' * (n > 1)}, " # add to string
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# Write results
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for det_index, (*xyxy, conf, cls) in enumerate(reversed(det[:,:6])):
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if save_txt: # Write to file
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xywh = (xyxy2xywh(torch.tensor(xyxy).view(1, 4)) / gn).view(-1).tolist() # normalized xywh
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line = (cls, *xywh, conf) if opt.save_conf else (cls, *xywh) # label format
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with open(txt_path + '.txt', 'a') as f:
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f.write(('%g ' * len(line)).rstrip() % line + '\n')
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if save_img or opt.save_crop or view_img: # Add bbox to image
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c = int(cls) # integer class
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label = None if opt.hide_labels else (names[c] if opt.hide_conf else f'{names[c]} {conf:.2f}')
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kpts = det[det_index, 6:]
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plot_one_box(xyxy, im0, label=label, color=colors(c, True), line_thickness=opt.line_thickness, kpt_label=kpt_label, kpts=kpts, steps=3, orig_shape=im0.shape[:2])
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if opt.save_crop:
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save_one_box(xyxy, im0s, file=save_dir / 'crops' / names[c] / f'{p.stem}.jpg', BGR=True)
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if save_txt_tidl: # Write to file in tidl dump format
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for *xyxy, conf, cls in det_tidl:
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xyxy = torch.tensor(xyxy).view(-1).tolist()
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line = (conf, cls, *xyxy) if opt.save_conf else (cls, *xyxy) # label format
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with open(txt_path + '.txt', 'a') as f:
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f.write(('%g ' * len(line)).rstrip() % line + '\n')
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# Print time (inference + NMS)
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print(f'{s}Done. ({t2 - t1:.3f}s)')
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# Stream results
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if view_img:
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cv2.imshow(str(p), im0)
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cv2.waitKey(1) # 1 millisecond
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# Save results (image with detections)
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if save_img:
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if dataset.mode == 'image':
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cv2.imwrite(save_path, im0)
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else: # 'video' or 'stream'
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if vid_path != save_path: # new video
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vid_path = save_path
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if isinstance(vid_writer, cv2.VideoWriter):
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vid_writer.release() # release previous video writer
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if vid_cap: # video
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fps = vid_cap.get(cv2.CAP_PROP_FPS)
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w = int(vid_cap.get(cv2.CAP_PROP_FRAME_WIDTH))
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h = int(vid_cap.get(cv2.CAP_PROP_FRAME_HEIGHT))
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else: # stream
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fps, w, h = 30, im0.shape[1], im0.shape[0]
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save_path += '.mp4'
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vid_writer = cv2.VideoWriter(save_path, cv2.VideoWriter_fourcc(*'mp4v'), fps, (w, h))
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vid_writer.write(im0)
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if save_txt or save_txt_tidl or save_img:
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s = f"\n{len(list(save_dir.glob('labels/*.txt')))} labels saved to {save_dir / 'labels'}" if save_txt or save_txt_tidl else ''
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print(f"Results saved to {save_dir}{s}")
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print(f'Done. ({time.time() - t0:.3f}s)')
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if __name__ == '__main__':
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parser = argparse.ArgumentParser()
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parser.add_argument('--weights', nargs='+', type=str, default='yolov5s.pt', help='model.pt path(s)')
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parser.add_argument('--source', type=str, default='data/images', help='source') # file/folder, 0 for webcam
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parser.add_argument('--img-size', nargs= '+', type=int, default=640, help='inference size (pixels)')
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parser.add_argument('--conf-thres', type=float, default=0.25, help='object confidence threshold')
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parser.add_argument('--iou-thres', type=float, default=0.45, help='IOU threshold for NMS')
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parser.add_argument('--device', default='', help='cuda device, i.e. 0 or 0,1,2,3 or cpu')
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parser.add_argument('--view-img', action='store_true', help='display results')
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parser.add_argument('--save-txt', action='store_true', help='save results to *.txt')
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parser.add_argument('--save-txt-tidl', action='store_true', help='save results to *.txt in tidl format')
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parser.add_argument('--save-bin', action='store_true', help='save base n/w outputs in raw bin format')
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parser.add_argument('--save-conf', action='store_true', help='save confidences in --save-txt labels')
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parser.add_argument('--save-crop', action='store_true', help='save cropped prediction boxes')
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parser.add_argument('--nosave', action='store_true', help='do not save images/videos')
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parser.add_argument('--classes', nargs='+', type=int, help='filter by class: --class 0, or --class 0 2 3')
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parser.add_argument('--agnostic-nms', action='store_true', help='class-agnostic NMS')
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parser.add_argument('--augment', action='store_true', help='augmented inference')
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parser.add_argument('--update', action='store_true', help='update all models')
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parser.add_argument('--project', default='runs/detect', help='save results to project/name')
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parser.add_argument('--name', default='exp', help='save results to project/name')
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parser.add_argument('--exist-ok', action='store_true', help='existing project/name ok, do not increment')
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parser.add_argument('--line-thickness', default=3, type=int, help='bounding box thickness (pixels)')
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parser.add_argument('--hide-labels', default=False, action='store_true', help='hide labels')
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parser.add_argument('--hide-conf', default=False, action='store_true', help='hide confidences')
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parser.add_argument('--kpt-label', action='store_true', help='use keypoint labels')
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opt = parser.parse_args()
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print(opt)
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check_requirements(exclude=('tensorboard', 'pycocotools', 'thop'))
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with torch.no_grad():
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if opt.update: # update all models (to fix SourceChangeWarning)
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for opt.weights in ['yolov5s.pt', 'yolov5m.pt', 'yolov5l.pt', 'yolov5x.pt']:
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detect(opt=opt)
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strip_optimizer(opt.weights)
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else:
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detect(opt=opt)
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