python图片方面应用

亦凉 2022-05-24 05:09 135阅读 0赞

#### 白色转透明，根据颜色值来判断，将符合条件的像素值alpha通道值改为0 ####

from PIL import Image
    def transPNG(srcImageName,dstImageName):
        img = Image.open(srcImageName)
        img = img.convert("RGBA")
        datas = img.getdata()
        newData = list()
        for item in datas:
            if item[0] >250 and item[1] > 250 and item[2] > 250:
                newData.append(( 255, 255, 255, 0))
            else:
                newData.append(item)
    
        img.putdata(newData)
        img.save(dstImageName,"PNG")
    transPNG("a0.png","aa0.png")

#### gif动图修改 ####

from PIL import Image, ImageDraw, ImageFont
    import imageio,os,sys
    def Gif2PNG():
        def processImage(infile):
            try:
                im = Image.open(infile)
            except IOError:
                print ("Cant load", infile)
                sys.exit(1)
            i = 0
            mypalette = im.getpalette()
    
            try:
                while 1:
                    im.putpalette(mypalette)
                    new_im = Image.new("RGBA", im.size)
                    new_im.paste(im)
                    new_im.save('a'+str(i)+'.png')
    
                    i += 1
                    im.seek(im.tell() + 1)
    
            except EOFError:
                pass # end of sequence
        processImage('source.gif')
    def NewNameImg(name='测试',size=(63, 22),axis=(2, 2),fontsize=22):
        '''创建名字图片 name 名字 size 图片尺寸 axis 文字定位坐标 fontsize 字体大小'''
        image = Image.new('RGBA', size, (255,255,255))#创建覆盖文本
        draw = ImageDraw.Draw(image)
        setFont = ImageFont.truetype('C:/windows/fonts/simhei.ttf', fontsize)#字体
        fillColor = "#000000"#颜色
        draw.text(axis, name, font=setFont, fill=fillColor)
        #image.save('test.png')
        return image
    def newGif(name='测试',axis=(81,118),duration=0.1, outName='gif.gif'):
        '''创建GIF name 名字 axis 名字放的位置 duration 动画间隔 outName 输出名字'''
        img2=NewNameImg(name,size=(172,24))
        images = []
        filenames=sorted((fn for fn in os.listdir('.') if fn.endswith('.png')))
        for filename in filenames:
            img=Image.open(filename)
            img.paste(img2, axis)
            img.save(filename)
            images.append(imageio.imread(filename))
        imageio.mimsave(outName, images,duration=duration)
    
    
    if __name__ == '__main__':
        newGif('测试',axis=(9,152), duration=0.05)