【Python】使用ImageEnhance提升图片画质

使用ImageEnhance提升图片画质

from PIL import Image, ImageEnhance
import io

image_path = "PhoneImg_20250319_160023607949_01.png"

def enhance_image_quality(image_path):
    """使用双三次插值算法提升画质"""
    with Image.open(image_path) as img:
        # 计算目标尺寸（如检测到小图则放大）
        if img.width > 1000 and img.width < 1440:
            ratio = 1440/img.width
            print(f"do enhance ratio:{ratio}")
            #new_size = (int(1440), int(3120))
            new_size = (int(img.width*ratio), int(img.height*ratio))
            resized_img = img.resize(new_size, Image.Resampling.BICUBIC)
            
            # 锐化处理
            enhancer = ImageEnhance.Sharpness(resized_img)
            enhanced_img = enhancer.enhance(ratio)
            
            enhanced_img.save(image_path, quality=96, subsampling=0)

enhance_image_quality(image_path)