image_nd = cv2.imread("XX.jpg") A= ( torch.tensor(image_nd) / 255. ).flip(-1) 上面是一个典型的代码片,需要注意cv2读到的ndarray是uint8类型,并且默认通道顺序是BGR,因此需要先除以255然后反转最后一个维度(Pytorch不支持[::-1]这种切片逆转语法)。 ndarray to pil image_nd = cv2.imread("/da...
img_pil= Image.open('1.jpg') img_cv2= cv2.imread('1.jpg')#pil <-> npimg_np =np.array(img_pil) img_pil=Image.fromarray(img_np)#pil <-> torchimg_tensor =torchvision.transforms.ToTensor()(img_pil) img_pil=torchvision.transforms.ToPILImage()(img_tensor)#pil <-> cv2img_cv2 =cv2...
SOLVEPNP_ITERATIVE, useExtrinsicGuess=True, rvec=rvec0, tvec=T0) angle_axis = torch.tensor(rvec,device=device,dtype=torch.float).view(1, 3) T = torch.tensor(T,device=device,dtype=torch.float).view(1, 3) P_6d[i,:] = torch.cat((angle_axis,T),dim=-1) ctx.save_for_backward(...
mask = np.expand_dims(mask,-1) mask_t = to_tensor(mask)# mask_t = (mask_t > brightness_difference).float()# mask_t, _ = torch.max(mask_t, dim=0, keepdim=True)binary_mask = (1- mask_t)# valid positions are 1; holes are 0binary_mask = binary_mask.expand(3,-1,-1) cl...
T = torch.tensor(T,device=device,dtype=torch.float).view(1,3) P_6d[i,:] = torch.cat((angle_axis,T),dim=-1) ctx.save_for_backward(pts2d,P_6d,pts3d,K)returnP_6d 开发者ID:BoChenYS,项目名称:BPnP,代码行数:24,代码来源:BPnP.py ...
fromskimage.metricsimportpeak_signal_noise_ratioaspsnrimporttorch# method1'''此方法适用于测量 unit8 类型的数据cv2读取的图像可直接用此测量,PIL读取的图像转换为numpy后可用此测量若已经转换为tensor类型,则不可用此方法,会报类型错误的BUG'''psnr(imgTrue,imgTest,data_range=255)# method2'''自己实现的测...
# Write to file # Write to file 保存txt文件 # 将xyxy(左上角+右下角)格式转为xywh(中心点+宽长)格式,并归一化,转化为列表再保存 xywh = (xyxy2xywh(torch.tensor(xyxy).view(1, 4)) / gn).view(-1).tolist() # normalized xywh # line的形式是: ”类别 x y w h“,若save_conf为true,...
importnumpyasnpimporttorch np_arr=tensor_arr.numpy() 3. cv2(numpy) & PIL cv2和PIL.Image的转换其实是numpy.array和PIL的转换 注意,PIL.Image和plt.imshow的格式都是rgb,而cv2是bgr,所以要做格式转换 代码:credit tohttps://blog.csdn.net/dcrmg/article/details/78147219 ...
"Torch env info": { "torch_version": "2.0.1+cu118", "is_debug_build": "False", "cuda_compiled_version": "11.8", "gcc_version": null, "clang_version": null, "cmake_version": null, "os": "Microsoft Windows 10 Pro",
一些前置知识可以参考前一篇文章pytorch DataLoader(1): opencv,skimage,PIL,Tensor转换以及transforms，这篇...