dev yolov5

Vision/detection/yolov5/detect.py

@@ -0,0 +1,230 @@
+import argparse
+import os
+import sys
+from pathlib import Path
+
+import cv2
+import oneflow as flow
+import numpy as np
+
+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
+
+from models.common import DetectMultiBackend
+from utils.datasets import IMG_FORMATS, VID_FORMATS, LoadImages, LoadStreams
+from utils.general import (LOGGER, check_file, check_img_size, check_imshow, check_requirements, colorstr,
+                           increment_path, non_max_suppression, print_args, scale_coords, strip_optimizer, xyxy2xywh)
+from utils.plots import Annotator, colors, save_one_box
+from utils.flow_utils import select_device, time_sync
+
+
+def run(weights=ROOT / 'yolov5s.pt',  # model.pt path(s)
+        source=ROOT / 'data/images',  # file/dir/URL/glob, 0 for webcam
+        data=ROOT / 'data/coco128.yaml',  # dataset.yaml path
+        imgsz=(640, 640),  # inference size (height, width)
+        conf_thres=0.25,  # confidence threshold
+        iou_thres=0.45,  # NMS IOU threshold
+        max_det=1000,  # maximum detections per image
+        device='',  # cuda device, i.e. 0 or 0,1,2,3 or cpu
+        view_img=False,  # show results
+        save_txt=False,  # save results to *.txt
+        save_conf=False,  # save confidences in --save-txt labels
+        save_crop=False,  # save cropped prediction boxes
+        nosave=False,  # do not save images/videos
+        classes=None,  # filter by class: --class 0, or --class 0 2 3
+        agnostic_nms=False,  # class-agnostic NMS
+        augment=False,  # augmented inference
+        visualize=False,  # visualize features
+        update=False,  # update all models
+        project=ROOT / 'runs/detect',  # save results to project/name
+        name='exp',  # save results to project/name
+        exist_ok=False,  # existing project/name ok, do not increment
+        line_thickness=3,  # bounding box thickness (pixels)
+        hide_labels=False,  # hide labels
+        hide_conf=False,  # hide confidences
+        half=False,  # use FP16 half-precision inference
+        dnn=False,  # use OpenCV DNN for ONNX inference
+        ):
+    source = str(source)
+    save_img = not nosave and not source.endswith('.txt')  # save inference images
+    is_file = Path(source).suffix[1:] in (IMG_FORMATS + VID_FORMATS)
+    is_url = source.lower().startswith(('rtsp://', 'rtmp://', 'http://', 'https://'))
+    webcam = source.isnumeric() or source.endswith('.txt') or (is_url and not is_file)
+    if is_url and is_file:
+        source = check_file(source)  # download
+
+    # Directories
+    save_dir = increment_path(Path(project) / name, exist_ok=exist_ok)  # increment run
+    (save_dir / 'labels' if save_txt else save_dir).mkdir(parents=True, exist_ok=True)  # make dir
+
+    # Load model
+    device = select_device(device)
+    model = DetectMultiBackend(weights, device=device, dnn=dnn, data=data)
+    stride, names = model.stride, model.names
+    imgsz = check_img_size(imgsz, s=stride)  # check image size
+
+    # Half
+    half &= device.type != 'cpu'  # FP16 supported on limited backends with CUDA
+
+    model.model.half() if half else model.model.float()
+
+    # Dataloader
+    if webcam:
+        view_img = check_imshow()
+        dataset = LoadStreams(source, img_size=imgsz, stride=stride)
+        bs = len(dataset)  # batch_size
+    else:
+        dataset = LoadImages(source, img_size=imgsz, stride=stride)
+        bs = 1  # batch_size
+    vid_path, vid_writer = [None] * bs, [None] * bs
+
+    # Run inference
+    model.warmup(imgsz=(1, 3, *imgsz), half=half)  # warmup
+    dt, seen = [0.0, 0.0, 0.0], 0
+    with flow.no_grad():
+        for path, im, im0s, vid_cap, s in dataset:
+            t1 = time_sync()
+            im = flow.tensor(im).to(device)
+            im = im.half() if half else im.float()  # uint8 to fp16/32
+            im /= 255  # 0 - 255 to 0.0 - 1.0
+            if im.ndimension() == 3:
+                im = im.unsqueeze(0)  # expand for batch dim
+            t2 = time_sync()
+            dt[0] += t2 - t1
+
+            # Inference
+            visualize = increment_path(save_dir / Path(path).stem, mkdir=True) if visualize else False
+            pred = model(im, augment=augment, visualize=visualize)
+            t3 = time_sync()
+            dt[1] += t3 - t2
+
+            # NMS
+            pred = non_max_suppression(pred, conf_thres, iou_thres, classes, agnostic_nms, max_det=max_det)
+            dt[2] += time_sync() - t3
+
+            # Second-stage classifier (optional)
+            # pred = utils.general.apply_classifier(pred, classifier_model, im, im0s)
+
+            # Process predictions
+            for i, det in enumerate(pred):  # per image
+                seen += 1
+                if webcam:  # batch_size >= 1
+                    p, im0, frame = path[i], im0s[i].copy(), dataset.count
+                    s += f'{i}: '
+                else:
+                    p, im0, frame = path, im0s.copy(), getattr(dataset, 'frame', 0)
+
+                p = Path(p)  # to Path
+                save_path = str(save_dir / p.name)  # im.jpg
+                txt_path = str(save_dir / 'labels' / p.stem) + ('' if dataset.mode == 'image' else f'_{frame}')  # im.txt
+                s += '%gx%g ' % im.shape[2:]  # print string
+                gn = flow.tensor(im0.shape)[[1, 0, 1, 0]]  # normalization gain whwh
+                imc = im0.copy() if save_crop else im0  # for save_crop
+                annotator = Annotator(im0, line_width=line_thickness, example=str(names))
+                if len(det):
+                    # Rescale boxes from img_size to im0 size
+                    det[:, :4] = scale_coords(im.shape[2:], det[:, :4], im0.shape).round()
+
+                    # Print results
+                    for c in np.unique(det[:, -1]):
+                        n = (det[:, -1] == c).sum()  # detections per class
+                        s += f"{n} {names[int(c)]}{'s' * (n > 1)}, "  # add to string
+
+                    # Write results
+                    for *xyxy, conf, cls in reversed(det):
+                        if save_txt:  # Write to file
+                            xywh = (xyxy2xywh(flow.tensor(xyxy).view(1, 4)) / gn).view(-1).tolist()  # normalized xywh
+                            line = (cls, *xywh, conf) if 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 save_crop or view_img:  # Add bbox to image
+                            c = int(cls)  # integer class
+                            label = None if hide_labels else (names[c] if hide_conf else f'{names[c]} {conf:.2f}')
+                            annotator.box_label(xyxy, label, color=colors(c, True))
+                            if save_crop:
+                                save_one_box(xyxy, imc, file=save_dir / 'crops' / names[c] / f'{p.stem}.jpg', BGR=True)
+
+                # Print time (inference-only)
+                LOGGER.info(f'{s}Done. ({t3 - t2:.3f}s)')
+
+                # Stream results
+                im0 = annotator.result()
+                if view_img:
+                    cv2.imshow(str(p), im0)
+                    cv2.waitKey(1)  # 1 millisecond
+
+                # Save results (image with detections)
+                if save_img:
+                    if dataset.mode == 'image':
+                        cv2.imwrite(save_path, im0)
+                    else:  # 'video' or 'stream'
+                        if vid_path[i] != save_path:  # new video
+                            vid_path[i] = save_path
+                            if isinstance(vid_writer[i], cv2.VideoWriter):
+                                vid_writer[i].release()  # release previous video writer
+                            if vid_cap:  # video
+                                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))
+                            else:  # stream
+                                fps, w, h = 30, im0.shape[1], im0.shape[0]
+                                save_path += '.mp4'
+                            vid_writer[i] = cv2.VideoWriter(save_path, cv2.VideoWriter_fourcc(*'mp4v'), fps, (w, h))
+                        vid_writer[i].write(im0)
+
+    # Print results
+    t = tuple(x / seen * 1E3 for x in dt)  # speeds per image
+    LOGGER.info(f'Speed: %.1fms pre-process, %.1fms inference, %.1fms NMS per image at shape {(1, 3, *imgsz)}' % t)
+    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 ''
+        LOGGER.info(f"Results saved to {colorstr('bold', save_dir)}{s}")
+    if update:
+        strip_optimizer(weights)  # update model (to fix SourceChangeWarning)
+
+
+def parse_opt():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--weights', nargs='+', type=str, default=ROOT / 'yolov5s.pt', help='model path(s)')
+    parser.add_argument('--source', type=str, default=ROOT / 'data/images', help='file/dir/URL/glob, 0 for webcam')
+    parser.add_argument('--data', type=str, default=ROOT / 'data/coco128.yaml', help='(optional) dataset.yaml path')
+    parser.add_argument('--imgsz', '--img', '--img-size', nargs='+', type=int, default=[640], help='inference size h,w')
+    parser.add_argument('--conf-thres', type=float, default=0.25, help='confidence threshold')
+    parser.add_argument('--iou-thres', type=float, default=0.45, help='NMS IoU threshold')
+    parser.add_argument('--max-det', type=int, default=1000, help='maximum detections per image')
+    parser.add_argument('--device', default='', help='cuda device, i.e. 0 or 0,1,2,3 or cpu')
+    parser.add_argument('--view-img', action='store_true', help='show results')
+    parser.add_argument('--save-txt', action='store_true', help='save results to *.txt')
+    parser.add_argument('--save-conf', action='store_true', help='save confidences in --save-txt labels')
+    parser.add_argument('--save-crop', action='store_true', help='save cropped prediction boxes')
+    parser.add_argument('--nosave', action='store_true', help='do not save images/videos')
+    parser.add_argument('--classes', nargs='+', type=int, help='filter by class: --classes 0, or --classes 0 2 3')
+    parser.add_argument('--agnostic-nms', action='store_true', help='class-agnostic NMS')
+    parser.add_argument('--augment', action='store_true', help='augmented inference')
+    parser.add_argument('--visualize', action='store_true', help='visualize features')
+    parser.add_argument('--update', action='store_true', help='update all models')
+    parser.add_argument('--project', default=ROOT / 'runs/detect', help='save results to project/name')
+    parser.add_argument('--name', default='exp', help='save results to project/name')
+    parser.add_argument('--exist-ok', action='store_true', help='existing project/name ok, do not increment')
+    parser.add_argument('--line-thickness', default=3, type=int, help='bounding box thickness (pixels)')
+    parser.add_argument('--hide-labels', default=False, action='store_true', help='hide labels')
+    parser.add_argument('--hide-conf', default=False, action='store_true', help='hide confidences')
+    parser.add_argument('--half', action='store_true', help='use FP16 half-precision inference')
+    parser.add_argument('--dnn', action='store_true', help='use OpenCV DNN for ONNX inference')
+    opt = parser.parse_args()
+    opt.imgsz *= 2 if len(opt.imgsz) == 1 else 1  # expand
+    print_args(FILE.stem, opt)
+    return opt
+
+
+def main(opt):
+    check_requirements(exclude=('tensorboard', 'thop'))
+    run(**vars(opt))
+
+
+if __name__ == "__main__":
+    opt = parse_opt()
+    main(opt)