transformations.py 文件源码

def transformImg(self, img, t):
        imgT = img.transform((int(img.size[0]*t[3]),int(img.size[1]*t[3])), Image.EXTENT, (0,0,img.size[0],img.size[1]), Image.BILINEAR)
        imgT = imgT.rotate(numpy.rad2deg(t[0]), Image.BILINEAR, expand=1)
        if t[4] == 1.:
            imgT = imgT.transpose(Image.FLIP_LEFT_RIGHT)

        # crop only valid part
        if self.crop:
            imgT = imgT.crop(self.getInscribedRectangle(t[0], (img.size[0]*t[3], img.size[1]*t[3])))

        # crop from translation
        imgT = imgT.resize((int(self.imgSize[0]*1.1), int(self.imgSize[1]*1.1)), Image.BILINEAR)
        xstart = int((imgT.size[0] // 2 - t[1]) - self.imgSize[0] // 2)
        ystart = int((imgT.size[1] // 2 - t[2]) - self.imgSize[1] // 2)
        assert xstart >= 0 and ystart >= 0
        return imgT.crop((xstart, ystart, xstart+self.imgSize[0], ystart+self.imgSize[1]))