95 lines
3.0 KiB
Python
95 lines
3.0 KiB
Python
import json
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from PIL import Image
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import os
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# 全局变量定义分辨率
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RESIZE_TO = (256, 256)
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LARGE_IMAGE_SIZE = (2048, 2048)
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IMAGE_COUNT = 64
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ROOT_DIR = '../example/src/main/assets/pic'
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def load_json(file_path):
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with open(file_path, 'r') as file:
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return json.load(file)
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def remove_white_border(image):
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"""
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去除图片边缘的一个像素宽的白色边框。
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:param image: 输入的PIL Image对象。
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:return: 处理后的PIL Image对象。
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"""
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# 获取图像尺寸
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width, height = image.size
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# 定义白色阈值，允许一定的误差范围
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white_threshold = (250, 250, 250)
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# 查找左边界
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left = 0
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while left < width and all(image.getpixel((left, y))[:3] >= white_threshold for y in range(height)):
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left += 1
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# 查找右边界
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right = width - 1
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while right > 0 and all(image.getpixel((right, y))[:3] >= white_threshold for y in range(height)):
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right -= 1
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# 查找上边界
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top = 0
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while top < height and all(image.getpixel((x, top))[:3] >= white_threshold for x in range(width)):
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top += 1
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# 查找下边界
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bottom = height - 1
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while bottom > 0 and all(image.getpixel((x, bottom))[:3] >= white_threshold for x in range(width)):
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bottom -= 1
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# 如果发现有白色边框，则裁剪它们
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if left < right and top < bottom:
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image = image.crop((left, top, right + 1, bottom + 1))
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return image
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def resize_image(image_path):
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image = Image.open(image_path).convert('RGBA')
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image = remove_white_border(image)
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return image.resize(RESIZE_TO)
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def main(json_file_path):
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# 确保使用完整路径
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json_file_path = os.path.join(ROOT_DIR, json_file_path)
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data = load_json(json_file_path)
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new_data = {}
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for folder_name, images in data.items():
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large_image = Image.new('RGBA', LARGE_IMAGE_SIZE, color=(0, 0, 0, 0))
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images_coordinates = {}
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index = 0
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for image_name in images:
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if index >= IMAGE_COUNT:
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break
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# 图片位于子文件夹内
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img_path = os.path.join(ROOT_DIR, folder_name, image_name)
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img = resize_image(img_path)
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x = (index % 8) * RESIZE_TO[0]
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y = (index // 8) * RESIZE_TO[1]
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large_image.paste(img, (x, y))
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images_coordinates[image_name] = {'x': x, 'y': y}
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index += 1
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output_image_path = os.path.join(ROOT_DIR, f"{folder_name}ex.png")
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large_image.save(output_image_path, format='png')
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# 将坐标信息直接保存到new_data字典中
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new_data[folder_name] = images_coordinates
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# 输出新的json文件
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output_json_path = os.path.join(ROOT_DIR, 'motion_data_ex.json')
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with open(output_json_path, 'w') as outfile:
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json.dump(new_data, outfile, indent=4)
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# 使用示例
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main('motion_data.json') |