lineest.py 文件源码

def scale_to_h(img,target_height,order=1,dtype=dtype('f'),cval=0):
    h,w = img.shape
    scale = target_height*1.0/h
    target_width = int(scale*w)
    output = interpolation.affine_transform(1.0*img,eye(2)/scale,order=order,
                                            output_shape=(target_height,target_width),
                                            mode='constant',cval=cval)
    output = array(output,dtype=dtype)
    return output