Created
November 14, 2015 14:42
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アップル加工
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| # -*- coding: utf-8 -*- | |
| """ | |
| Created on 2015/11/14 22:40:07 | |
| アップル加工 | |
| @author: eqs | |
| """ | |
| import sys | |
| import numpy as np | |
| import matplotlib.pyplot as plt | |
| import matplotlib.colors as pcl | |
| import scipy.ndimage as sim | |
| def con(x): | |
| X = np.int32(x * 360) | |
| if 0 <= X <= 30 or 330 <= X <= 360: | |
| # 赤色っぽい部分はそのまま | |
| return x | |
| else: | |
| # 赤色っぽくない部分は変な値にしておく(あとで彩度を0にするための目印) | |
| return -1 | |
| im = sim.imread('jaga.jpg') | |
| im = im / 255.0 # normalize | |
| im_hsv = pcl.rgb_to_hsv(im) | |
| f = np.vectorize(con) | |
| im_hsv[:, :, 0] = f(im_hsv[:, :, 0]) | |
| im_hsv[:, :, 1][im_hsv[:, :, 0] != -1] *= 1.0 | |
| im_hsv[:, :, 1][im_hsv[:, :, 0] == -1] = 0 | |
| im_rgb = pcl.hsv_to_rgb(im_hsv) | |
| plt.subplot(121), plt.imshow(im), plt.title('source image') | |
| plt.subplot(122), plt.imshow(im_rgb), plt.title('converted image') | |
| plt.show() |
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source image :
converted image :
