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python人脸头发身体部位识别人数统计

2021-05-07 13:23 313人阅读评论(0)

python人脸头发身体部位识别人数统计

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运行结果如下：

代码如下：


  
   
    
     
    
    
      
     
    
   
    
     
    
    
     
      import time
     
    
   
    
     
    
    
     
      from pathlib 
      import Path
     
    
   
    
     
    
    
     
      import cv2
     
    
   
    
     
    
    
     
      import torch
     
    
   
    
     
    
    
     
      from numpy 
      import random
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
     
      from models.experimental 
      import attempt_load
     
    
   
    
     
    
    
     
      from utils.datasets 
      import LoadStreams, LoadImages
     
    
   
    
     
    
    
     
      from utils.general 
      import check_img_size, check_requirements, check_imshow, non_max_suppression, apply_classifier, \
     
    
   
    
     
    
    
     
          scale_coords, xyxy2xywh, strip_optimizer, set_logging, increment_path
     
    
   
    
     
    
    
     
      from utils.plots 
      import plot_one_box
     
    
   
    
     
    
    
     
      from utils.torch_utils 
      import select_device, load_classifier, time_synchronized
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
     
      def detect(save_img=False):
     
    
   
    
     
    
    
     
          source, weights, view_img, save_txt, imgsz = opt.source, opt.weights, opt.view_img, opt.save_txt, opt.img_size
     
    
   
    
     
    
    
     
          webcam = source.isnumeric() 
      or source.endswith(
      '.txt') 
      or source.lower().startswith(
     
    
   
    
     
    
    
     
              (
      'rtsp://', 
      'rtmp://', 
      'http://'))
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
         
      # Directories
     
    
   
    
     
    
    
     
          save_dir = Path(increment_path(Path(opt.project) / opt.name, exist_ok=opt.exist_ok))  
      # increment run
     
    
   
    
     
    
    
     
          (save_dir / 
      'labels' 
      if save_txt 
      else save_dir).mkdir(parents=
      True, exist_ok=
      True)  
      # make dir
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
         
      # Initialize
     
    
   
    
     
    
    
     
          set_logging()
     
    
   
    
     
    
    
     
          device = select_device(opt.device)
     
    
   
    
     
    
    
     
          half = device.type != 
      'cpu'  
      # half precision only supported on CUDA
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
         
      # Load model
     
    
   
    
     
    
    
     
          model = attempt_load(weights, map_location=device)  
      # load FP32 model
     
    
   
    
     
    
    
     
          stride = int(model.stride.max())  
      # model stride
     
    
   
    
     
    
    
     
          imgsz = check_img_size(imgsz, s=stride)  
      # check img_size
     
    
   
    
     
    
    
         
      if half:
     
    
   
    
     
    
    
     
              model.half()  
      # to FP16
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
         
      # Second-stage classifier
     
    
   
    
     
    
    
     
          classify = 
      False
     
    
   
    
     
    
    
         
      if classify:
     
    
   
    
     
    
    
     
              modelc = load_classifier(name=
      'resnet101', n=
      2)  
      # initialize
     
    
   
    
     
    
    
     
              modelc.load_state_dict(torch.load(
      'weights/resnet101.pt', map_location=device)[
      'model']).to(device).eval()
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
         
      # Set Dataloader
     
    
   
    
     
    
    
     
          vid_path, vid_writer = 
      None, 
      None
     
    
   
    
     
    
    
         
      if webcam:
     
    
   
    
     
    
    
     
              view_img = check_imshow()
     
    
   
    
     
    
    
     
              cudnn.benchmark = 
      True  
      # set True to speed up constant image size inference
     
    
   
    
     
    
    
     
              dataset = LoadStreams(source, img_size=imgsz, stride=stride)
     
    
   
    
     
    
    
         
      else:
     
    
   
    
     
    
    
     
              save_img = 
      True
     
    
   
    
     
    
    
     
              dataset = LoadImages(source, img_size=imgsz, stride=stride)
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
         
      # Get names and colors
     
    
   
    
     
    
    
     
          names = model.module.names 
      if hasattr(model, 
      'module') 
      else model.names
     
    
   
    
     
    
    
     
          colors = [[random.randint(
      0, 
      255) 
      for _ 
      in range(
      3)] 
      for _ 
      in names]
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
         
      # Run inference
     
    
   
    
     
    
    
         
      if device.type != 
      'cpu':
     
    
   
    
     
    
    
     
              model(torch.zeros(
      1, 
      3, imgsz, imgsz).to(device).type_as(next(model.parameters())))  
      # run once
     
    
   
    
     
    
    
     
          t0 = time.time()
     
    
   
    
     
    
    
         
      for path, img, im0s, vid_cap 
      in dataset:
     
    
   
    
     
    
    
     
              img = torch.from_numpy(img).to(device)
     
    
   
    
     
    
    
     
              img = img.half() 
      if half 
      else 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()
     
    
   
    
     
    
    
     
              pred = model(img, augment=opt.augment)[
      0]
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
             
      # Apply NMS
     
    
   
    
     
    
    
     
              pred = non_max_suppression(pred, opt.conf_thres, opt.iou_thres, classes=opt.classes, agnostic=opt.agnostic_nms)
     
    
   
    
     
    
    
     
              t2 = time_synchronized()
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
             
      # Apply Classifier
     
    
   
    
     
    
    
             
      if classify:
     
    
   
    
     
    
    
     
                  pred = apply_classifier(pred, modelc, img, im0s)
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
             
      # Process detections
     
    
   
    
     
    
    
             
      for i, det 
      in enumerate(pred):  
      # detections per image
     
    
   
    
     
    
    
                 
      if webcam:  
      # batch_size >= 1
     
    
   
    
     
    
    
     
                      p, s, im0, frame = path[i], 
      '%g: ' % i, im0s[i].copy(), dataset.count
     
    
   
    
     
    
    
                 
      else:
     
    
   
    
     
    
    
     
                      p, s, im0, frame = path, 
      '', im0s, getattr(dataset, 
      'frame', 
      0)
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
     
                  p = Path(p)  
      # to Path
     
    
   
    
     
    
    
     
                  save_path = str(save_dir / p.name)  
      # img.jpg
     
    
   
    
     
    
    
     
                  txt_path = str(save_dir / 
      'labels' / p.stem) + (
      '' 
      if dataset.mode == 
      'image' 
      else 
      f'_{frame}')  
      # img.txt
     
    
   
    
     
    
    
     
                  s += 
      '%gx%g ' % img.shape[
      2:]  
      # print string
     
    
   
    
     
    
    
     
                  gn = torch.tensor(im0.shape)[[
      1, 
      0, 
      1, 
      0]]  
      # normalization gain whwh
     
    
   
    
     
    
    
                 
      if len(det):
     
    
   
    
     
    
    
                     
      # Rescale boxes from img_size to im0 size
     
    
   
    
     
    
    
     
                      det[:, :
      4] = scale_coords(img.shape[
      2:], det[:, :
      4], im0.shape).round()
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
                     
      # Write results
     
    
   
    
     
    
    
                     
      for *xyxy, conf, cls 
      in reversed(det):
     
    
   
    
     
    
    
                         
      if save_txt:  
      # Write to file
     
    
   
    
     
    
    
     
                              xywh = (xyxy2xywh(torch.tensor(xyxy).view(
      1, 
      4)) / gn).view(
      -1).tolist()  
      # normalized xywh
     
    
   
    
     
    
    
     
                              line = (cls, *xywh, conf) 
      if opt.save_conf 
      else (cls, *xywh)  
      # label format
     
    
   
    
     
    
    
                             
      with open(txt_path + 
      '.txt', 
      'a') 
      as f:
     
    
   
    
     
    
    
     
                                  f.write((
      '%g ' * len(line)).rstrip() % line + 
      '\n')
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
                         
      if save_img 
      or view_img:  
      # Add bbox to image
     
    
   
    
     
    
    
     
                              label = 
      f'{names[int(cls)]} {conf:.2f}'
     
    
   
    
     
    
    
     
                              plot_one_box(xyxy, im0, label=label, color=colors[int(cls)], line_thickness=
      3)
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
                 
      # Print time (inference + NMS)
     
    
   
    
     
    
    
     
                  print(
      f'{s}Done. ({t2 - t1:.3f}s)')
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
                 
      # Save results (image with detections)
     
    
   
    
     
    
    
                 
      if save_img:
     
    
   
    
     
    
    
                     
      if dataset.mode == 
      'image':
     
    
   
    
     
    
    
     
                          cv2.imwrite(save_path, im0)
     
    
   
    
     
    
    
                     
      else:  
      # 'video'
     
    
   
    
     
    
    
                         
      if vid_path != save_path:  
      # new video
     
    
   
    
     
    
    
     
                              vid_path = save_path
     
    
   
    
     
    
    
                             
      if isinstance(vid_writer, cv2.VideoWriter):
     
    
   
    
     
    
    
     
                                  vid_writer.release()  
      # release previous video writer
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
     
                              fourcc = 
      'mp4v'  
      # output video codec
     
    
   
    
     
    
    
     
                              fps = vid_cap.get(cv2.CAP_PROP_FPS)
     
    
   
    
     
    
    
     
                              w = int(vid_cap.get(cv2.CAP_PROP_FRAME_WIDTH))
     
    
   
    
     
    
    
     
                              h = int(vid_cap.get(cv2.CAP_PROP_FRAME_HEIGHT))
     
    
   
    
     
    
    
     
                              vid_writer = cv2.VideoWriter(save_path, cv2.VideoWriter_fourcc(*fourcc), fps, (w, h))
     
    
   
    
     
    
    
     
                          vid_writer.write(im0)
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
         
      if save_txt 
      or save_img:
     
    
   
    
     
    
    
     
              s = 
      f"\n{len(list(save_dir.glob('labels/*.txt')))} labels saved to {save_dir / 'labels'}" 
      if save_txt 
      else 
      ''
     
    
   
    
     
    
    
     
              print(
      f"Results saved to {save_dir}{s}")
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
     
          print(
      f'Done. ({time.time() - t0:.3f}s)')
     
    
   
    
     
    
    
         
     
    
   
    
     
    
    
     
          print(opt)
     
    
   
    
     
    
    
     
          check_requirements()
     
    
   
    
     
    
    
      
     
    
   
    
     
    
    
         
      with torch.no_grad():
     
    
   
    
     
    
    
             
      if opt.update:  
      # update all models (to fix SourceChangeWarning)
     
    
   
    
     
    
    
                 
      for opt.weights 
      in [
      'yolov5s.pt', 
      'yolov5m.pt', 
      'yolov5l.pt', 
      'yolov5x.pt']:
     
    
   
    
     
    
    
     
                      detect()
     
    
   
    
     
    
    
     
                      strip_optimizer(opt.weights)
     
    
   
    
     
    
    
             
      else:
     
    
   
    
     
    
    
     
                  detect()