Python functional.to_tensor方法代碼示例

# 需要導入模塊: from torchvision.transforms import functional [as 別名]
# 或者: from torchvision.transforms.functional import to_tensor [as 別名]
def __call__(self, rgb_img, label_img=None):

        label1 = label_img
        label2 = label_img
        if self.scale1 != 1:
            w, h = label_img.size
            label1 = label1.resize((w//self.scale1, h//self.scale1), Image.NEAREST)

        if self.scale2 != 1:
            w, h = label_img.size
            label2 = label2.resize((w//self.scale2, h//self.scale2), Image.NEAREST)

        rgb_img = F.to_tensor(rgb_img) # convert to tensor (values between 0 and 1)
        rgb_img = F.normalize(rgb_img, self.mean, self.std) # normalize the tensor
        label1 = torch.LongTensor(np.array(label1).astype(np.int64))
        label2 = torch.LongTensor(np.array(label2).astype(np.int64))


        return rgb_img, label1, label2 

# 需要導入模塊: from torchvision.transforms import functional [as 別名]
# 或者: from torchvision.transforms.functional import to_tensor [as 別名]
def process_images(self, clean, mask):
        i, j, h, w = RandomResizedCrop.get_params(clean, scale=(0.5, 2.0), ratio=(3. / 4., 4. / 3.))
        clean_img = resized_crop(clean, i, j, h, w, size=self.img_size, interpolation=Image.BICUBIC)
        mask = resized_crop(mask, i, j, h, w, self.img_size, interpolation=Image.BICUBIC)

        # get mask before further image augment
        # mask = self.get_mask(raw_img, clean_img)

        if self.add_random_masks:
            mask = random_masks(mask.copy(), size=self.img_size[0], offset=10)
        mask = np.where(np.array(mask) > brightness_difference * 255, np.uint8(255), np.uint8(0))
        mask = cv2.dilate(mask, np.ones((10, 10), np.uint8), iterations=1)

        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 0
        binary_mask = binary_mask.expand(3, -1, -1)
        clean_img = self.transformer(clean_img)
        corrupted_img = clean_img * binary_mask
        return corrupted_img, binary_mask, clean_img 

# 需要導入模塊: from torchvision.transforms import functional [as 別名]
# 或者: from torchvision.transforms.functional import to_tensor [as 別名]
def resize_pad_tensor(self, pil_img):
        origin = to_tensor(pil_img).unsqueeze(0)
        fix_len = self.resize
        long = max(pil_img.size)
        ratio = fix_len / long
        new_size = tuple(map(lambda x: int(x * ratio) // 8 * 8, pil_img.size))
        img = pil_img.resize(new_size, Image.BICUBIC)
        # img = pil_img
        img = self.transformer(img).unsqueeze(0)

        _, _, h, w = img.size()
        if fix_len > w:

            boarder_pad = (0, fix_len - w, 0, 0)
        else:

            boarder_pad = (0, 0, 0, fix_len - h)

        img = pad(img, boarder_pad, value=0)
        mask_resizer = self.resize_mask(boarder_pad, pil_img.size)
        return img, origin, mask_resizer 

# 需要導入模塊: from torchvision.transforms import functional [as 別名]
# 或者: from torchvision.transforms.functional import to_tensor [as 別名]
def __getitem__(self, index):
        """Retrieves image from folder and corrupts it."""

        # Load PIL image
        img_path = os.path.join(self.root_dir, self.imgs[index])
        img =  Image.open(img_path).convert('RGB')

        # Random square crop
        if self.crop_size != 0:
            img = self._random_crop([img])[0]

        # Corrupt source image
        tmp = self._corrupt(img)
        source = tvF.to_tensor(self._corrupt(img))

        # Corrupt target image, but not when clean targets are requested
        if self.clean_targets:
            target = tvF.to_tensor(img)
        else:
            target = tvF.to_tensor(self._corrupt(img))

        return source, target 

# 需要導入模塊: from torchvision.transforms import functional [as 別名]
# 或者: from torchvision.transforms.functional import to_tensor [as 別名]
def __call__(self, sample):
        rdict = {}
        input_data = sample['input']

        if isinstance(input_data, list):
            ret_input = [F.to_tensor(item)
                         for item in input_data]
        else:
            ret_input = F.to_tensor(input_data)

        rdict['input'] = ret_input

        if self.labeled:
            gt_data = sample['gt']
            if gt_data is not None:
                if isinstance(gt_data, list):
                    ret_gt = [F.to_tensor(item)
                              for item in gt_data]
                else:
                    ret_gt = F.to_tensor(gt_data)

                rdict['gt'] = ret_gt
        sample.update(rdict)
        return sample 

# 需要導入模塊: from torchvision.transforms import functional [as 別名]
# 或者: from torchvision.transforms.functional import to_tensor [as 別名]
def __getitem__(self, index):
        # get downscaled, cropped and gt (if available) image
        hr_image = Image.open(self.hr_files[index])
        w, h = hr_image.size
        cs = utils.calculate_valid_crop_size(min(w, h), self.upscale_factor)
        if self.crop_size is not None:
            cs = min(cs, self.crop_size)
        cropped_image = TF.to_tensor(T.CenterCrop(cs // self.upscale_factor)(hr_image))
        hr_image = T.CenterCrop(cs)(hr_image)
        hr_image = TF.to_tensor(hr_image)
        resized_image = utils.imresize(hr_image, 1.0 / self.upscale_factor, True)
        if self.lr_files is None:
            return resized_image, cropped_image, resized_image
        else:
            lr_image = Image.open(self.lr_files[index])
            lr_image = TF.to_tensor(T.CenterCrop(cs // self.upscale_factor)(lr_image))
            return resized_image, cropped_image, lr_image 

# 需要導入模塊: from torchvision.transforms import functional [as 別名]
# 或者: from torchvision.transforms.functional import to_tensor [as 別名]
def cv_transform(img):
    # img = resize(img, size=(100, 300))
    # img = to_tensor(img)
    # img = normalize(img, mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225])
    # img = pad(img, padding=(10, 10, 20, 20), fill=(255, 255, 255), padding_mode='constant')
    # img = pad(img, padding=(100, 100, 100, 100), fill=5, padding_mode='symmetric')
    # img = crop(img, -40, -20, 1000, 1000)
    # img = center_crop(img, (310, 300))
    # img = resized_crop(img, -10.3, -20, 330, 220, (500, 500))
    # img = hflip(img)
    # img = vflip(img)
    # tl, tr, bl, br, center = five_crop(img, 100)
    # img = adjust_brightness(img, 2.1)
    # img = adjust_contrast(img, 1.5)
    # img = adjust_saturation(img, 2.3)
    # img = adjust_hue(img, 0.5)
    # img = adjust_gamma(img, gamma=3, gain=0.1)
    # img = rotate(img, 10, resample='BILINEAR', expand=True, center=None)
    # img = to_grayscale(img, 3)
    # img = affine(img, 10, (0, 0), 1, 0, resample='BICUBIC', fillcolor=(255,255,0))
    # img = gaussion_noise(img)
    # img = poisson_noise(img)
    img = salt_and_pepper(img)
    return to_tensor(img) 

# 需要導入模塊: from torchvision.transforms import functional [as 別名]
# 或者: from torchvision.transforms.functional import to_tensor [as 別名]
def pil_transform(img):
    # img = functional.resize(img, size=(100, 300))
    # img = functional.to_tensor(img)
    # img = functional.normalize(img, mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225])
    # img = functional.pad(img, padding=(10, 10, 20, 20), fill=(255, 255, 255), padding_mode='constant')
    # img = functional.pad(img, padding=(100, 100, 100, 100), padding_mode='symmetric')
    # img = functional.crop(img, -40, -20, 1000, 1000)
    # img = functional.center_crop(img, (310, 300))
    # img = functional.resized_crop(img, -10.3, -20, 330, 220, (500, 500))
    # img = functional.hflip(img)
    # img = functional.vflip(img)
    # tl, tr, bl, br, center = functional.five_crop(img, 100)
    # img = functional.adjust_brightness(img, 2.1)
    # img = functional.adjust_contrast(img, 1.5)
    # img = functional.adjust_saturation(img, 2.3)
    # img = functional.adjust_hue(img, 0.5)
    # img = functional.adjust_gamma(img, gamma=3, gain=0.1)
    # img = functional.rotate(img, 10, resample=PIL.Image.BILINEAR, expand=True, center=None)
    # img = functional.to_grayscale(img, 3)
    # img = functional.affine(img, 10, (0, 0), 1, 0, resample=PIL.Image.BICUBIC, fillcolor=(255,255,0))

    return functional.to_tensor(img) 

# 需要導入模塊: from torchvision.transforms import functional [as 別名]
# 或者: from torchvision.transforms.functional import to_tensor [as 別名]
def __call__(self, img_z, img_x, bndbox_z, bndbox_x):
        crop_z = self._crop(img_z, bndbox_z, self.exemplar_sz)
        crop_x = self._crop(img_x, bndbox_x, self.search_sz)
        labels, weights = self._create_labels()

        crop_z = self._acquire_augment(
            crop_z, self.exemplar_sz, self.stats.rgb_variance_z)
        crop_x = self._acquire_augment(
            crop_x, self.search_sz, self.stats.rgb_variance_x)

        crop_z = (255.0 * F.to_tensor(crop_z)).float()
        crop_x = (255.0 * F.to_tensor(crop_x)).float()
        labels = torch.from_numpy(labels).float()
        weights = torch.from_numpy(weights).float()

        return crop_z, crop_x, labels, weights 

# 需要導入模塊: from torchvision.transforms import functional [as 別名]
# 或者: from torchvision.transforms.functional import to_tensor [as 別名]
def load_raw_images(ids, images_path):
    r"""
    Load images from raw files
    
    :param ids: ids of the images in the data order
    :param images_path: path of the raw images
    :return: the images, as pytorch tensors
    """
    images = []
    for count, id in enumerate(ids):
        # if count % 10000 == 0:
        #     print(count)
        image_path = images_path + "{:0>7d}".format(int(id)) + ".png"
        img = Image.open(image_path).convert('L')
        img = tvf.to_tensor(img)
        assert img.shape[1] == img.shape[2]
        assert img.shape[1] in {64, 128}
        images.append(img)
    return images 

# 需要導入模塊: from torchvision.transforms import functional [as 別名]
# 或者: from torchvision.transforms.functional import to_tensor [as 別名]
def collate(batch):

    idxs, images, calibs, objects, grids = zip(*batch)

    # Crop images to the same dimensions
    minw = min(img.size[0] for img in images)
    minh = min(img.size[1] for img in images)
    images = [img.crop((0, 0, minw, minh)) for img in images]

    # Create a vector of indices
    idxs = torch.LongTensor(idxs)

    # Stack images and calibration matrices along the batch dimension
    images = torch.stack([to_tensor(img) for img in images])
    calibs = torch.stack(calibs)
    grids = torch.stack(grids)

    return idxs, images, calibs, objects, grids 

# 需要導入模塊: from torchvision.transforms import functional [as 別名]
# 或者: from torchvision.transforms.functional import to_tensor [as 別名]
def save_image_batch(idx, image_ids):
    imsizes = [4, 8, 16, 32, 64, 128]
    impaths = [os.path.join(SOURCE_IMG_DIR, get_impath(image_id))
               for image_id in image_ids]
    images = []
    for impath in impaths:
        images.append(plt.imread(impath))

    for imsize in imsizes:
        to_save = torch.zeros((len(impaths), 3, imsize, imsize),
                              dtype=torch.float32)
        for i, im in enumerate(images):
            im = im[:, :, :3]
            im = cv2.resize(im, (imsize, imsize),
                            interpolation=cv2.INTER_AREA)
            im = to_tensor(im)
            assert im.max() <= 1.0
            assert len(im.shape) == 3
            assert im.dtype == torch.float32
            to_save[i] = im
        target_dir = os.path.join(TARGET_IMAGE_DIR, str(imsize))
        target_path = os.path.join(target_dir, "{}.torch".format(str(idx)))
        os.makedirs(target_dir, exist_ok=True)
        torch.save(to_save, target_path)
        del to_save 

# 需要導入模塊: from torchvision.transforms import functional [as 別名]
# 或者: from torchvision.transforms.functional import to_tensor [as 別名]
def __getitem__(self, index):
        filename = self.filenames[index]

        img_in = Image.open(self.input_dir / filename).convert('RGB')
        img_in_lr = img_in.resize(self.input_size, Image.BICUBIC)
        img_in_up = img_in_lr.resize(self.output_size, Image.BICUBIC)

        img_ref = Image.open(self.ref_dir / filename).convert('RGB')
        img_ref = img_ref.resize(self.output_size, Image.BICUBIC)
        img_ref_lr = img_ref.resize(self.input_size, Image.BICUBIC)
        img_ref_up = img_ref_lr.resize(self.output_size, Image.BICUBIC)

        return {'img_in': TF.to_tensor(img_in_up),
                'img_ref': TF.to_tensor(img_ref),
                'img_ref_blur': TF.to_tensor(img_ref_up),
                'filename': Path(filename).stem} 

# 需要導入模塊: from torchvision.transforms import functional [as 別名]
# 或者: from torchvision.transforms.functional import to_tensor [as 別名]
def __call__(self, image, target):
        return F.to_tensor(image), target 

# 需要導入模塊: from torchvision.transforms import functional [as 別名]
# 或者: from torchvision.transforms.functional import to_tensor [as 別名]
def __call__(self, image, mask):
        # transforming to PIL image
        image, mask = F.to_pil_image(image), F.to_pil_image(mask)

        # random crop
        if self.crop:
            i, j, h, w = T.RandomCrop.get_params(image, self.crop)
            image, mask = F.crop(image, i, j, h, w), F.crop(mask, i, j, h, w)

        if np.random.rand() < self.p_flip:
            image, mask = F.hflip(image), F.hflip(mask)

        # color transforms || ONLY ON IMAGE
        if self.color_jitter_params:
            image = self.color_tf(image)

        # random affine transform
        if np.random.rand() < self.p_random_affine:
            affine_params = T.RandomAffine(180).get_params((-90, 90), (1, 1), (2, 2), (-45, 45), self.crop)
            image, mask = F.affine(image, *affine_params), F.affine(mask, *affine_params)

        # transforming to tensor
        image = F.to_tensor(image)
        if not self.long_mask:
            mask = F.to_tensor(mask)
        else:
            mask = to_long_tensor(mask)

        return image, mask