Python: PS 滤镜--碎片特效

本文用 Python 实现 PS 滤镜中的碎片特效，这个特效简单来说就是将图像在 上，下，左，右 四个方向做平移，然后将四个方向的平移的图像叠加起来做平均。具体的效果图可以参考之前的博客

http://blog.csdn.net/matrix_space/article/details/29192819

from skimage import img_as_float
import matplotlib.pyplot as plt
from skimage import io

file_name='D:/Visual Effects/PS Algorithm/4.jpg';
img=io.imread(file_name)

img = img_as_float(img)

img_1 = img.copy()
img_2 = img.copy()
img_3 = img.copy()
img_4 = img.copy()

img_out = img.copy()

Offset = 7

row, col, channel = img.shape

img_1[:, 0 : col-1-Offset, :] = img[:, Offset:col-1, :]
img_2[:, Offset:col-1, :] = img[:, 0 : col-1-Offset, :]
img_3[0:row-1-Offset, :, :] = img[Offset:row-1, :, :]
img_4[Offset:row-1, :, :] = img[0:row-1-Offset, :, :]

img_out = (img_1 + img_2 + img_3 + img_4) / 4.0

plt.figure(1)
plt.imshow(img)
plt.axis('off');

plt.figure(2)
plt.imshow(img_out)
plt.axis('off');