diff --git a/Vision/yolo/yolov8_pt_seg.py b/Vision/yolo/yolov8_pt_seg.py new file mode 100644 index 0000000..dd91001 --- /dev/null +++ b/Vision/yolo/yolov8_pt_seg.py @@ -0,0 +1,365 @@ + +#!/usr/bin/env python +# -*- coding: UTF-8 -*- +''' +@Project -> File :yolov8_segment.py +@IDE :PyCharm +@Author :hjw +@Version : 1.0.0 +@Date :2024/8/20 9:25 +@Function : +''' + +# yolov8 pt模型,实例分割推理 +import cv2 +import time +import numpy as np +import torch, torchvision +import torch.nn.functional as F + + + +def load_model(model_path, device): + model = torch.load(model_path, map_location=device) + category_list = model.get('CLASSES', model.get('model').names) + model = (model.get('ema') or model['model']).float() # FP32 model + model.__setattr__('CLASSES', category_list) + model.fuse().eval() + #model = model.cuda() + return model + + +def data_preprocess(model, img, img_scale, device): + stride, auto = 32, True + stride = max(int(model.stride.max()), 32) + img = letterbox(img, new_shape=img_scale, stride=stride, auto=auto)[0] # padded resize + img = np.ascontiguousarray(img.transpose((2, 0, 1))[::-1]) # HWC to CHW, BGR to RGB,contiguous + #img = torch.from_numpy(img) # ndarray to tensor + img = torch.from_numpy(img).to(device) + #img = torch.from_numpy(img) + img = img.float() # uint8 to fp32 + img /= 255 # 0 - 255 to 0.0 - 1.0 + if len(img.shape) == 3: + img = img[None] # expand for batch dim + return img + + +def letterbox(im, new_shape=(640, 640), color=(114, 114, 114), auto=True, scaleFill=False, 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 + ratio = r, r # width, height ratios + 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 + elif scaleFill: # stretch + dw, dh = 0.0, 0.0 + new_unpad = (new_shape[1], new_shape[0]) + ratio = new_shape[1] / shape[1], new_shape[0] / shape[0] # width, height ratios + + 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, ratio, (dw, dh) + + +def non_max_suppression(prediction, conf_thres=0.25, iou_thres=0.45, classes=None, agnostic=False, multi_label=False, + labels=(), max_det=300, nc=0, max_time_img=0.05, max_nms=30000, max_wh=7680, ): + # Checks + assert 0 <= conf_thres <= 1, f'Invalid Confidence threshold {conf_thres}, valid values are between 0.0 and 1.0' + assert 0 <= iou_thres <= 1, f'Invalid IoU {iou_thres}, valid values are between 0.0 and 1.0' + if isinstance(prediction, (list, tuple)): # YOLOv8 model in validation model, output = (inference_out, loss_out) + prediction = prediction[0] # select only inference output + + device = prediction.device + mps = 'mps' in device.type # Apple MPS + if mps: # MPS not fully supported yet, convert tensors to CPU before NMS + prediction = prediction.cpu() + bs = prediction.shape[0] # batch size + nc = nc or (prediction.shape[1] - 4) # number of classes + nm = prediction.shape[1] - nc - 4 + mi = 4 + nc # mask start index + xc = prediction[:, 4:mi].amax(1) > conf_thres # candidates + + # Settings + # min_wh = 2 # (pixels) minimum box width and height + time_limit = 0.5 + max_time_img * bs # seconds to quit after + multi_label &= nc > 1 # multiple labels per box (adds 0.5ms/img) + + prediction = prediction.transpose(-1, -2) # shape(1,84,6300) to shape(1,6300,84) + prediction[..., :4] = xywh2xyxy(prediction[..., :4]) # xywh to xyxy + + t = time.time() + output = [torch.zeros((0, 6 + nm), device=prediction.device)] * bs + for xi, x in enumerate(prediction): # image index, image inference + # Apply constraints + # x[((x[:, 2:4] < min_wh) | (x[:, 2:4] > max_wh)).any(1), 4] = 0 # width-height + x = x[xc[xi]] # confidence + + # Cat apriori labels if autolabelling + if labels and len(labels[xi]): + lb = labels[xi] + v = torch.zeros((len(lb), nc + nm + 4), device=x.device) + v[:, :4] = xywh2xyxy(lb[:, 1:5]) # box + v[range(len(lb)), lb[:, 0].long() + 4] = 1.0 # cls + x = torch.cat((x, v), 0) + + # If none remain process next image + if not x.shape[0]: + continue + + # Detections matrix nx6 (xyxy, conf, cls) + box, cls, mask = x.split((4, nc, nm), 1) + + if multi_label: + i, j = torch.where(cls > conf_thres) + x = torch.cat((box[i], x[i, 4 + j, None], j[:, None].float(), mask[i]), 1) + else: # best class only + conf, j = cls.max(1, keepdim=True) + x = torch.cat((box, conf, j.float(), mask), 1)[conf.view(-1) > conf_thres] + + # Filter by class + if classes is not None: + x = x[(x[:, 5:6] == torch.tensor(classes, device=x.device)).any(1)] + + # Check shape + n = x.shape[0] # number of boxes + if not n: # no boxes + continue + if n > max_nms: # excess boxes + x = x[x[:, 4].argsort(descending=True)[:max_nms]] # sort by confidence and remove excess boxes + + # Batched NMS + c = x[:, 5:6] * (0 if agnostic else max_wh) # classes + boxes, scores = x[:, :4] + c, x[:, 4] # boxes (offset by class), scores + i = torchvision.ops.nms(boxes, scores, iou_thres) # NMS + i = i[:max_det] # limit detections + + output[xi] = x[i] + if mps: + output[xi] = output[xi].to(device) + if (time.time() - t) > time_limit: + print(f'WARNING ⚠️ NMS time limit {time_limit:.3f}s exceeded') + break # time limit exceeded + return output + + +def xywh2xyxy(x): + """ + Convert bounding box coordinates from (x, y, width, height) format to (x1, y1, x2, y2) format where (x1, y1) is the + top-left corner and (x2, y2) is the bottom-right corner. + Args: + x (np.ndarray | torch.Tensor): The input bounding box coordinates in (x, y, width, height) format. + Returns: + y (np.ndarray | torch.Tensor): The bounding box coordinates in (x1, y1, x2, y2) format. + """ + assert x.shape[-1] == 4, f'input shape last dimension expected 4 but input shape is {x.shape}' + y = torch.empty_like(x) if isinstance(x, torch.Tensor) else np.empty_like(x) # faster than clone/copy + dw = x[..., 2] / 2 # half-width + dh = x[..., 3] / 2 # half-height + y[..., 0] = x[..., 0] - dw # top left x + y[..., 1] = x[..., 1] - dh # top left y + y[..., 2] = x[..., 0] + dw # bottom right x + y[..., 3] = x[..., 1] + dh # bottom right y + return y + + +def scale_boxes(img1_shape, boxes, img0_shape, ratio_pad=None, padding=True): + """ + Rescales bounding boxes (in the format of xyxy) from the shape of the image they were originally specified in + (img1_shape) to the shape of a different image (img0_shape). + Args: + img1_shape (tuple): The shape of the image that the bounding boxes are for, in the format of (height, width). + boxes (torch.Tensor): the bounding boxes of the objects in the image, in the format of (x1, y1, x2, y2) + img0_shape (tuple): the shape of the target image, in the format of (height, width). + ratio_pad (tuple): a tuple of (ratio, pad) for scaling the boxes. If not provided, the ratio and pad will be + calculated based on the size difference between the two images. + padding (bool): If True, assuming the boxes is based on image augmented by yolo style. If False then do regular + rescaling. + Returns: + boxes (torch.Tensor): The scaled bounding boxes, in the format of (x1, y1, x2, y2) + """ + if ratio_pad is None: # calculate from img0_shape + gain = min(img1_shape[0] / img0_shape[0], img1_shape[1] / img0_shape[1]) # gain = old / new + pad = round((img1_shape[1] - img0_shape[1] * gain) / 2 - 0.1), round( + (img1_shape[0] - img0_shape[0] * gain) / 2 - 0.1) # wh padding + else: + gain = ratio_pad[0][0] + pad = ratio_pad[1] + + if padding: + boxes[..., [0, 2]] -= pad[0] # x padding + boxes[..., [1, 3]] -= pad[1] # y padding + boxes[..., :4] /= gain + clip_boxes(boxes, img0_shape) + return boxes + + +def clip_boxes(boxes, shape): + """ + Takes a list of bounding boxes and a shape (height, width) and clips the bounding boxes to the shape. + + Args: + boxes (torch.Tensor): the bounding boxes to clip + shape (tuple): the shape of the image + """ + if isinstance(boxes, torch.Tensor): # faster individually + boxes[..., 0].clamp_(0, shape[1]) # x1 + boxes[..., 1].clamp_(0, shape[0]) # y1 + boxes[..., 2].clamp_(0, shape[1]) # x2 + boxes[..., 3].clamp_(0, shape[0]) # y2 + else: # np.array (faster grouped) + boxes[..., [0, 2]] = boxes[..., [0, 2]].clip(0, shape[1]) # x1, x2 + boxes[..., [1, 3]] = boxes[..., [1, 3]].clip(0, shape[0]) # y1, y2 + + +def process_mask(protos, masks_in, bboxes, shape, ori_shape): + """ + Crop after upsample. + proto_out: [mask_dim, mask_h, mask_w] + out_masks: [n, mask_dim], n is number of masks after nms + bboxes: [n, 4], n is number of masks after nms + shape:input_image_size, (h, w) + + return: h, w, n + """ + # mask转换成自定义尺寸 + c, mh, mw = protos.shape # CHW + masks = (masks_in @ protos.float().view(c, -1)).sigmoid().view(-1, mh, mw) + masks = F.interpolate(masks[None], shape, mode='bilinear', align_corners=False)[0] # CHW + # mask转换成原图尺寸 + gain = min(shape[0] / ori_shape[0], shape[1] / ori_shape[1]) # gain = old / new + pad = (shape[1] - ori_shape[1] * gain) / 2, (shape[0] - ori_shape[0] * gain) / 2 # wh padding + top, left = int(pad[1]), int(pad[0]) # y, x + bottom, right = int(shape[0] - pad[1]), int(shape[1] - pad[0]) + if len(masks.shape) < 2: + raise ValueError(f'"len of masks shape" should be 2 or 3, but got {len(masks.shape)}') + masks = masks[:, top:bottom, left:right] + masks = F.interpolate(masks[None], ori_shape, mode='bilinear', align_corners=False)[0] # CHW + # 裁去box以外的图像 + crop_masks = [] + for i, mask in enumerate(masks): + mask = mask[int(bboxes[i][1]):int(bboxes[i][3]), int(bboxes[i][0]):int(bboxes[i][2])] + crop_masks.append(mask.gt_(0.5)) + return crop_masks + + +def plot_result(det_cpu, dst_img, masks, category_names): + circle_max_contour = [] + concrete_max_contour = [] + for i, item in enumerate(det_cpu): + # rand_color = (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)) + # 画box + box_x1, box_y1, box_x2, box_y2 = item[0:4].astype(np.int32) + label = category_names[int(item[5])] + rand_color = (0, 255, 255) + #cv2.rectangle(dst_img, (box_x1, box_y1), (box_x2, box_y2), color=rand_color, thickness=2) + score = item[4] + org = (int((box_x1+box_x2)/2), int((box_y1+box_y2)/2)) + text = '{}|{:.2f}'.format(label, score) + cv2.putText(dst_img, text, org=org, fontFace=cv2.FONT_HERSHEY_SIMPLEX, fontScale=0.8, color=rand_color, thickness=2) + # 画mask + #mask = masks[i].cpu().numpy().astype(int) + mask = masks[i].cpu().data.numpy().astype(int) + #mask = masks[i].numpy().astype(int) + bbox_image = dst_img[box_y1:box_y2, box_x1:box_x2] + h, w = box_y2 - box_y1, box_x2 - box_x1 + mask_colored = np.zeros((h, w, 3), dtype=np.uint8) + mask_colored[np.where(mask)] = rand_color + ################################## + imgray = cv2.cvtColor(mask_colored, cv2.COLOR_BGR2GRAY) + # cv2.imshow('mask',imgray) + # cv2.waitKey(1) + # 2、二进制图像 + ret, binary = cv2.threshold(imgray, 10, 255, 0) + # 阈值 二进制图像 + # cv2.imshow('bin',binary) + # cv2.waitKey(1) + contours, hierarchy = cv2.findContours(binary, cv2.RETR_TREE, cv2.CHAIN_APPROX_NONE) + max_contour = None + max_perimeter = 0 + for contour in contours: + perimeter = cv2.arcLength(contour, True) + if perimeter > max_perimeter: + max_perimeter = perimeter + max_contour = contour + rect = cv2.minAreaRect(max_contour) + # cv2.boxPoints可以将轮廓点转换为四个角点坐标 + box = cv2.boxPoints(rect) + # 这一步不影响后面的画图,但是可以保证四个角点坐标为顺时针 + startidx = box.sum(axis=1).argmin() + box = np.roll(box, 4 - startidx, 0) + # 在原图上画出预测的外接矩形 + box = box.reshape((-1, 1, 2)).astype(np.int32) + box = box + [[[box_x1, box_y1]], [[box_x1, box_y1]], [[box_x1, box_y1]], [[box_x1, box_y1]]] + cv2.polylines(dst_img, [box], True, (0, 255, 0), 2) + + return dst_img + # cv2.imwrite('rs.jpg', dst_img) + + +class yolov8_segment(): + def __init__(self): + super(yolov8_segment, self).__init__() + + + def load_model(self, model_path, device): + self.model = load_model(model_path, device) + self.device = device + + def model_inference(self, frame, upd_arr): + img = data_preprocess(self.model, frame, [640, 640], self.device) + + # 推理 + ori_img = frame.copy() + result = self.model(img, augment=False) + preds = result[0] + proto = result[1][-1] + # NMS + det = non_max_suppression(preds, conf_thres=0.25, iou_thres=0.3, nc=len(self.model.CLASSES))[0] + if det.shape[0] != 0: + # bbox还原至原图尺寸 + det[:, :4] = scale_boxes(img.shape[2:], det[:, :4], ori_img.shape) + # mask转换成原图尺寸并做裁剪 + masks = process_mask(proto[0], det[:, 6:], det[:, :4], img.shape[2:], ori_img.shape[0:2]) + category_names = self.model.CLASSES + # 画图 + # result_frame = plot_result(det.cpu().data.numpy(), ori_img, masks, category_names) + return 1 , det.cpu().data.numpy(), ori_img, masks, category_names + else: + return 0 , None, None, None, None + + def clear(self): + del self.model + +# model = yolov8_segment() +# model.load_model('./pt_model/yolov8n-seg.pt','cpu') +# cap = cv2.VideoCapture(1) +# while True: +# # count_file = len(os.listdir('E:\\A_panckg\\cv_sdk_discharge\\video_save')) # 数量 +# ret, frame = cap.read() +# if ret: +# frame_save_count = 1000 +# frame = cv2.resize(frame, (1280, 720)) +# img = model.model_inference(frame, 0) +# cv2.imshow("imgrr", img) +# cv2.waitKey(1) +# #videoWriter(img) + + + +