【python】【图片】图片的格式转化|留白裁剪

将 .emf 图像转换为 .png 图像

from PIL import Image

def convert_emf_to_png(emf_path, png_path):
    emf_image = Image.open(emf_path)
    emf_image.save(png_path)

# 使用这个函数将 .emf 图像转换为 .png 图像
convert_emf_to_png(r"C:\Users\myearning\Desktop\计算书模板\picture\pic1.emf",r"C:\Users\myearning\Desktop\计算书模板\picture\pic1.jpg")

将图片留白裁剪

import os
from PIL import Image, ImageOps
from PIL import ImageChops

def crop_whitespace(image):
    bg = Image.new(image.mode, image.size, image.getpixel((0, 0)))
    diff = ImageChops.difference(image, bg)
    diff = ImageChops.add(diff, diff, 2.0, -100)
    bbox = diff.getbbox()
    if bbox:
        return image.crop(bbox)

def process_images(input_folder, output_folder):
    for filename in os.listdir(input_folder):
        if filename.lower().endswith(('.png', '.jpg', '.jpeg', '.bmp', '.tiff')):
            input_path = os.path.join(input_folder, filename)
            output_path = os.path.join(output_folder, filename)
            
            image = Image.open(input_path)
            cropped_image = crop_whitespace(image)
            
            if cropped_image:
                cropped_image.save(output_path, quality=100)
                print(f"Processed and saved: {output_path}")
            else:
                print(f"Could not crop image: {input_path}")

input_folder = "C:\\Users\\myearning\\Desktop\\计算书模板\\picture"
output_folder = "C:\\Users\\myearning\\Desktop\\计算书模板\\picture"

os.makedirs(output_folder, exist_ok=True)
process_images(input_folder, output_folder)

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