Deblur una imagen usando scikit-image
Estoy tratando de usarskimage.restoration.wiener, pero siempre termino con una imagen con un grupo de 1 (o -1), ¿qué estoy haciendo mal? La imagen original proviene deUni de Waterloo.
import numpy as np
from scipy.misc import imread
from skimage import color, data, restoration
from scipy.signal import convolve2d as conv2
def main():
image = imread("/Users/gsamaras/Downloads/boat.tif")
psf = np.ones((5, 5)) / 25
image = conv2(image, psf, 'same')
image += 0.1 * image.std() * np.random.standard_normal(image.shape)
deconvolved = restoration.wiener(image, psf, 0.00001)
print deconvolved
print image
if __name__ == "__main__":
main()
Salida:
[[ 1. -1. 1. ..., 1. -1. -1.]
[-1. -1. 1. ..., -1. 1. 1.]
[ 1. 1. 1. ..., 1. 1. 1.]
...,
[ 1. 1. 1. ..., 1. -1. 1.]
[ 1. 1. 1. ..., -1. 1. -1.]
[ 1. 1. 1. ..., -1. 1. 1.]]
[[ 62.73526298 77.84202199 94.1563234 ..., 85.12442365
69.80579057 48.74330501]
[ 74.79638704 101.6248559 143.09978769 ..., 100.07197414
94.34431216 59.72199141]
[ 96.41589893 132.53865314 161.8286996 ..., 137.17602535
117.72691238 80.38638741]
...,
[ 82.87641732 122.23168689 146.14129645 ..., 102.01214025
75.03217549 59.78417916]
[ 74.25240964 100.64285679 127.38475015 ..., 88.04694654
66.34568789 46.72457454]
[ 42.53382524 79.48377311 88.65000364 ..., 50.84624022
36.45044106 33.22771889]]
Y probé varios valores. ¿Qué me estoy perdiendo?