import json import os from PIL import Image import math from transformers import CLIPVisionModel, CLIPImageProcessor, CLIPVisionConfig import torch from tqdm import tqdm def divide_to_patches(image, patch_size): """ Divides an image into patches of a specified size. Args: image (PIL.Image.Image): The input image. patch_size (int): The size of each patch. Returns: list: A list of PIL.Image.Image objects representing the patches. """ patches = [] width, height = image.size for i in range(0, height, patch_size): for j in range(0, width, patch_size): box = (j, i, j + patch_size, i + patch_size) patch = image.crop(box) patches.append(patch) return patches def resize_and_pad_image(image, target_resolution): """ Resize and pad an image to a target resolution while maintaining aspect ratio. Args: image (PIL.Image.Image): The input image. target_resolution (tuple): The target resolution (width, height) of the image. Returns: PIL.Image.Image: The resized and padded image. """ original_width, original_height = image.size target_width, target_height = target_resolution # Determine which dimension (width or height) to fill scale_w = target_width / original_width scale_h = target_height / original_height if scale_w < scale_h: # Width will be filled completely new_width = target_width new_height = min(math.ceil(original_height * scale_w), target_height) else: # Height will be filled completely new_height = target_height new_width = min(math.ceil(original_width * scale_h), target_width) # Resize the image resized_image = image.resize((new_width, new_height)) # Create a new image with the target size and paste the resized image onto it new_image = Image.new("RGB", (target_width, target_height), (0, 0, 0)) paste_x = (target_width - new_width) // 2 paste_y = (target_height - new_height) // 2 new_image.paste(resized_image, (paste_x, paste_y)) return new_image def select_best_resolution(original_size, possible_resolutions): """ Selects the best resolution from a list of possible resolutions based on the original size. Args: original_size (tuple): The original size of the image in the format (width, height). possible_resolutions (list): A list of possible resolutions in the format [(width1, height1), (width2, height2), ...]. Returns: tuple: The best fit resolution in the format (width, height). """ original_width, original_height = original_size best_fit = None max_effective_resolution = 0 min_wasted_resolution = float("inf") for width, height in possible_resolutions: # Calculate the downscaled size to keep the aspect ratio scale = min(width / original_width, height / original_height) downscaled_width, downscaled_height = int(original_width * scale), int(original_height * scale) # Calculate effective and wasted resolutions effective_resolution = min(downscaled_width * downscaled_height, original_width * original_height) wasted_resolution = (width * height) - effective_resolution if effective_resolution > max_effective_resolution or (effective_resolution == max_effective_resolution and wasted_resolution < min_wasted_resolution): max_effective_resolution = effective_resolution min_wasted_resolution = wasted_resolution best_fit = (width, height) return best_fit def process_anyres_image(image, processor, grid_pinpoints): """ Process an image with variable resolutions. Args: image (PIL.Image.Image): The input image to be processed. processor: The image processor object. grid_pinpoints (str): A string representation of a list of possible resolutions. Returns: torch.Tensor: A tensor containing the processed image patches. """ # Convert grid_pinpoints from string to list if isinstance(grid_pinpoints, str) and "x" in grid_pinpoints: try: patch_size = processor.size[0] except Exception as e: patch_size = processor.size["shortest_edge"] assert patch_size in [224, 336, 384, 448, 512], "patch_size should be in [224, 336, 384, 448, 512]" # Use regex to extract the range from the input string matches = re.findall(r"\((\d+)x(\d+)\)", grid_pinpoints) range_start = tuple(map(int, matches[0])) range_end = tuple(map(int, matches[-1])) # Generate a matrix of tuples from (range_start[0], range_start[1]) to (range_end[0], range_end[1]) grid_pinpoints = [(i, j) for i in range(range_start[0], range_end[0] + 1) for j in range(range_start[1], range_end[1] + 1)] # Multiply all elements by patch_size grid_pinpoints = [[dim * patch_size for dim in pair] for pair in grid_pinpoints] if type(grid_pinpoints) is list: possible_resolutions = grid_pinpoints else: possible_resolutions = ast.literal_eval(grid_pinpoints) best_resolution = select_best_resolution(image.size, possible_resolutions) image_padded = resize_and_pad_image(image, best_resolution) patches = divide_to_patches(image_padded, processor.crop_size["height"]) # FIXME: this seems to be a bug that it resizes instead of pad. # but to keep it consistent with previous, i will keep it as it is # TODO: uncomment below to ablate with the padding if isinstance(processor.size, dict): shortest_edge = processor.size["shortest_edge"] else: shortest_edge = min(processor.size) image_original_resize = image.resize((shortest_edge, shortest_edge)) # image_padded_square = expand2square(image, tuple(int(x*255) for x in processor.image_mean)) # image_original_resize = image_padded_square.resize((processor.size['shortest_edge'], processor.size['shortest_edge'])) image_patches = [image_original_resize] + patches image_patches = [processor.preprocess(image_patch, return_tensors="pt")["pixel_values"][0] for image_patch in image_patches] return torch.stack(image_patches, dim=0) json_path="/share/junjie/shuyan/video_traindata/anno/nextqa.json" with open(json_path, 'r') as file: data = json.load(file) result=[] for i in tqdm(data): # print(i) if "video" in i: result.append(i) print(len(result)) output_file = "/share/junjie/shuyan/video_traindata/anno/nextqa_pure.json" with open(output_file, 'w', encoding='utf-8') as f_out: json.dump(result, f_out, indent=4, ensure_ascii=False)