120 lines
4.7 KiB
Python
120 lines
4.7 KiB
Python
import argparse
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import os
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import platform
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import sys
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from pathlib import Path
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import torch
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sys.path.append(R"../0_yolov9")
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from models.common import DetectMultiBackend
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from utils.dataloaders import LoadImages
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from utils.general import (LOGGER, Profile, check_img_size, colorstr, cv2,
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increment_path, non_max_suppression, scale_boxes)
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from utils.plots import Annotator, colors
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from utils.torch_utils import select_device, smart_inference_mode
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@smart_inference_mode()
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def run(
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weights= 'yolo.pt', # model path or triton URL
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source= 'data/images', # file/dir/URL/glob/screen/0(webcam)
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data= 'data/coco.yaml', # dataset.yaml path
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imgsz=(640, 640), # inference size (height, width)
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conf_thres=0.25, # confidence threshold
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iou_thres=0.45, # NMS IOU threshold
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max_det=1000, # maximum detections per image
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device='cpu', # cuda device, i.e. 0 or 0,1,2,3 or cpu
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classes=None, # filter by class: --class 0, or --class 0 2 3
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agnostic_nms=False, # class-agnostic NMS
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visualize=False, # visualize features
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project= './runs/detect', # save results to project/name
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name='exp', # save results to project/name
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line_thickness=2, # bounding box thickness (pixels)
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):
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source = str(source)
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# Directories
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save_dir = increment_path(Path(project) / name, exist_ok=False) # increment run
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save_dir.mkdir(parents=True, exist_ok=True) # make dir
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# Load model
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device = select_device(device)
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model = DetectMultiBackend(weights, device=device, data=data)
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stride, names, pt = model.stride, model.names, model.pt
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imgsz = check_img_size(imgsz, s=stride) # check image size
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# Dataloader
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dataset = LoadImages(source, img_size=imgsz, stride=stride, auto=True)
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# Run inference
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seen, dt = 0, (Profile(), Profile(), Profile())
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for path, im, im0s, _, s in dataset:
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with dt[0]:
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im = torch.from_numpy(im).to(model.device)
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im = im.half() if model.fp16 else im.float() # uint8 to fp16/32
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im /= 255 # 0 - 255 to 0.0 - 1.0
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if len(im.shape) == 3:
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im = im[None] # expand for batch dim
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# Inference
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with dt[1]:
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visualize = increment_path(save_dir / Path(path).stem, mkdir=True) if visualize else False
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pred = model(im, augment=False, visualize=visualize)
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# NMS
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with dt[2]:
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pred = non_max_suppression(pred, conf_thres, iou_thres, classes, agnostic_nms, max_det=max_det)
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# Process predictions
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for i, det in enumerate(pred): # per image
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seen += 1
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p, im0, _ = 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) # im.jpg
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s += '%gx%g ' % im.shape[2:] # print string
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annotator = Annotator(im0, line_width=line_thickness, example=str(names))
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if len(det):
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# Rescale boxes from img_size to im0 size
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det[:, :4] = scale_boxes(im.shape[2:], det[:, :4], im0.shape).round()
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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 *xyxy, conf, cls in reversed(det):
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c = int(cls) # integer class
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label = f'{names[c]} {conf:.2f}'
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annotator.box_label(xyxy, label, color=colors(c, True))
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# Stream results
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im0 = annotator.result()
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# Save results (image with detections)
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cv2.imwrite(save_path, im0)
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# Print time (inference-only)
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LOGGER.info(f"{s}{'' if len(det) else '(no detections), '}{dt[1].dt * 1E3:.1f}ms")
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# Print results
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t = tuple(x.t / seen * 1E3 for x in dt) # speeds per image
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LOGGER.info(f'Speed: %.1fms pre-process, %.1fms inference, %.1fms NMS per image at shape {(1, 3, *imgsz)}' % t)
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LOGGER.info(f"Results saved to {colorstr('bold', save_dir)}")
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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= '../weights/yolov9-t-converted.pt', help='model path')
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parser.add_argument('--source', type=str, default= '../0_yolov9/data/images/horses.jpg', help='img path')
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opt = parser.parse_args()
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run(**vars(opt))
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