【滚珠内装原理】图像缩放到目标尺寸 Python

最新推荐文章于 2022-08-20 22:50:07 发布

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最新推荐文章于 2022-08-20 22:50:07 发布

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分类专栏： Python 文章标签： Python

本文链接：https://blog.youkuaiyun.com/wsl985/article/details/90344527

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长宽等效，都适用

from PIL  import Image
import os

#说明：依据装滚珠方法，默认单张图片缩放（也可以文件夹遍历），例如需要正方形模板，长大于宽的，缩放到长与正方形相等

wanlen = 1280
wanwidth = 720

indir = "G:/PythonIO/outImg"

def dirlist(path, allfile):
    filelist = os.listdir(path)

    for filename in filelist: #广义
        filepath = os.path.join(path, filename)
        if os.path.isdir(filepath):
            dirlist(filepath, allfile)

        else:

            filepath = filepath.replace("\\","/")
            allfile.append(filepath)
            print(filepath)
    return allfile


#######

cutyes = 1

def solveImage(infile):
    outfile = infile.replace(".", "out.")
    img = Image.open(infile)
    # img.show()
    # grayimg = img.convert('L')
    # grayimg.save(outfile)

    lenmore = True
    imgsize = img.size
    if (imgsize[0] / imgsize[1] < wanlen / wanwidth):
        print(imgsize)
        lenmore = True
        relength = int(imgsize[0] * wanwidth / imgsize[1])
        # print("len more" + str(relength))
        out = img.resize((relength, wanwidth), Image.ANTIALIAS)  # 抗毛刺
    else:
        print(imgsize)
        lenmore = False
        rewidth = int(imgsize[1] * wanlen / imgsize[0])
        out = img.resize((wanlen, rewidth), Image.ANTIALIAS)

    if cutyes == 1:
        # 裁剪
        if lenmore:
            left = int(relength / 2 - wanlen / 2)
            cropped = out.crop((left, 0, left + wanlen, wanwidth))
            cropped.save(outfile)
        else:
            right = int(rewidth / 2 - wanwidth / 2)
            cropped = out.crop((0, right, wanlen, right + wanwidth))
            cropped.save(outfile)

        cropped.save(outfile)
    else:
        out.save(outfile)


allfile = dirlist(indir,[])
# for infile in allfile:
#     solveImage(infile)

cutyes = 0
solveImage("G:/PythonIO/bs_title_bgd.png")