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修掉有透明和非透明部分的图案的白边

'''
去边后白色地方变成透明色
星火讯飞、阿夏
20240817
'''

import os
from PIL import Image

path = r'C:\Users\jg2yXRZ\OneDrive\桌面\20241110一款校服'
folder_path = path + r'\01要放大'
output_folder = path + r'\02切边图'
os.makedirs(output_folder, exist_ok=True)

# 留一点白边
white_edge = 0

def find_non_white_pixel(image):
    width, height = image.size
    left, right, top, bottom = width, 0, height, 0

    for y in range(height):
        for x in range(width):
            pixel = image.getpixel((x, y))
            if len(pixel) == 4:  # RGBA
                r, g, b, a = pixel
            else:  # RGB
                r, g, b = pixel
                a = 255  # Assuming fully opaque if no alpha channel

            if not (r > 200 and g > 200 and b > 200):  # Adjust threshold as needed
                if x < left:
                    left = x
                if x > right:
                    right = x
                if y < top:
                    top = y
                if y > bottom:
                    bottom = y

    return left, right, top, bottom

def crop_image(image, left, right, top, bottom):
    return image.crop((left - white_edge, top - white_edge, right + white_edge, bottom + white_edge))

for file_name in os.listdir(folder_path):
    if file_name.endswith(".jpg") or file_name.endswith(".png"):
        input_path = os.path.join(folder_path, file_name)
        image = Image.open(input_path)
        left, right, top, bottom = find_non_white_pixel(image)
        cropped_image = crop_image(image, left, right, top, bottom)
        output_path = os.path.join(output_folder, file_name)
        cropped_image.save(output_path)



# '''
# 去边后白色地方变成透明色，透明图片统一大小
# 星火讯飞、阿夏
# 20240817
# '''      

# print('----2、图片放大成为1024*1024------')
# import os
# from PIL import Image

# # path=r'C:\Users\jg2yXRZ\OneDrive\图片\20240817饮料圆形'
# # input_folder = path+r'\圆形切边图'
# # output_folder = path+r'\圆形切边图透明'


# # input_folder = path+r'\05切边图'
# output_folder =path+r'\02切边图'
# # output_folder = path+r'\04透明图'
# newput_folder =path+r'\03统一图'
# os.makedirs(newput_folder,exist_ok=True)

# # 提取最大宽度的那张图片的尺寸
# def get_max_width_and_height(fold_path):
#     max_width = 0
#     max_height = 0

#     for file_name in os.listdir(fold_path):
#         if file_name.endswith(".png") or file_name.endswith(".jpg") or file_name.endswith(".jpeg"):
#             file_path = os.path.join(fold_path, file_name)
#             img = Image.open(file_path)
#             width, height = img.size
#             if width > max_width:
#                 max_width = width
#                 max_height = height

#     return max_width, max_height

# fold_path = output_folder
# max_width, max_height = get_max_width_and_height(fold_path)
# print("最大宽度：", max_width)
# print("最大高度：", max_height)

# # 最大宽度： 724
# # 最大高度： 869

# # # 自定义长宽
# # max_width=622
# # max_height=877

# # 统一所有图片大小
# def resize_image(image_path, output_folder, new_image_name):
#     img = Image.open(image_path)
#     new_img = img.resize((max_width,max_height))
#     new_img.save(os.path.join(output_folder, new_image_name))






# for file in os.listdir(output_folder):
#     if file.endswith('.png'):
#         input_image_path = os.path.join(output_folder, file)
#         new_image_name = f"{file[:-4]}.png"
#         resize_image(input_image_path, newput_folder, new_image_name)


# '''
# 图片上下翻转
# '''