CoCalc -- kernels.py

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Path: cocalc-examples / stanford-tensorflow-tutorials / examples / kernels.py
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import numpy as np
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import tensorflow as tf
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a = np.zeros([3, 3, 3, 3])
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a[1, 1, :, :] = 0.25
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a[0, 1, :, :] = 0.125
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a[1, 0, :, :] = 0.125
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a[2, 1, :, :] = 0.125
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a[1, 2, :, :] = 0.125
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a[0, 0, :, :] = 0.0625
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a[0, 2, :, :] = 0.0625
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a[2, 0, :, :] = 0.0625
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a[2, 2, :, :] = 0.0625
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BLUR_FILTER_RGB = tf.constant(a, dtype=tf.float32)
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a = np.zeros([3, 3, 1, 1])
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# a[1, 1, :, :] = 0.25
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# a[0, 1, :, :] = 0.125
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# a[1, 0, :, :] = 0.125
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# a[2, 1, :, :] = 0.125
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# a[1, 2, :, :] = 0.125
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# a[0, 0, :, :] = 0.0625
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# a[0, 2, :, :] = 0.0625
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# a[2, 0, :, :] = 0.0625
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# a[2, 2, :, :] = 0.0625
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a[1, 1, :, :] = 1.0
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a[0, 1, :, :] = 1.0
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a[1, 0, :, :] = 1.0
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a[2, 1, :, :] = 1.0
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a[1, 2, :, :] = 1.0
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a[0, 0, :, :] = 1.0
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a[0, 2, :, :] = 1.0
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a[2, 0, :, :] = 1.0
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a[2, 2, :, :] = 1.0
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BLUR_FILTER = tf.constant(a, dtype=tf.float32)
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a = np.zeros([3, 3, 3, 3])
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a[1, 1, :, :] = 5
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a[0, 1, :, :] = -1
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a[1, 0, :, :] = -1
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a[2, 1, :, :] = -1
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a[1, 2, :, :] = -1
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SHARPEN_FILTER_RGB = tf.constant(a, dtype=tf.float32)
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a = np.zeros([3, 3, 1, 1])
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a[1, 1, :, :] = 5
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a[0, 1, :, :] = -1
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a[1, 0, :, :] = -1
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a[2, 1, :, :] = -1
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a[1, 2, :, :] = -1
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SHARPEN_FILTER = tf.constant(a, dtype=tf.float32)
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# a = np.zeros([3, 3, 3, 3])
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# a[:, :, :, :] = -1
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# a[1, 1, :, :] = 8
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# EDGE_FILTER_RGB = tf.constant(a, dtype=tf.float32)
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EDGE_FILTER_RGB = tf.constant([
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			[[[ -1., 0., 0.], [ 0., -1., 0.], [ 0., 0., -1.]],
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            [[ -1., 0., 0.], [ 0., -1., 0.], [ 0., 0., -1.]],
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            [[ -1., 0., 0.], [ 0., -1., 0.], [ 0., 0., -1.]]],
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            [[[ -1., 0., 0.], [ 0., -1., 0.], [ 0., 0., -1.]],
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			[[ 8., 0., 0.], [ 0., 8., 0.], [ 0., 0., 8.]],
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			[[ -1., 0., 0.], [ 0., -1., 0.], [ 0., 0., -1.]]],
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			[[[ -1., 0., 0.], [ 0., -1., 0.], [ 0., 0., -1.]],
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			[[ -1., 0., 0.], [ 0., -1., 0.], [ 0., 0., -1.]],
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			[[ -1., 0., 0.], [ 0., -1., 0.], [ 0., 0., -1.]]]
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])
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a = np.zeros([3, 3, 1, 1])
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# a[:, :, :, :] = -1
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# a[1, 1, :, :] = 8
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a[0, 1, :, :] = -1
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a[1, 0, :, :] = -1
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a[1, 2, :, :] = -1
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a[2, 1, :, :] = -1
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a[1, 1, :, :] = 4
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EDGE_FILTER = tf.constant(a, dtype=tf.float32)
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a = np.zeros([3, 3, 3, 3])
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a[0, :, :, :] = 1
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a[0, 1, :, :] = 2 # originally 2
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a[2, :, :, :] = -1
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a[2, 1, :, :] = -2
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TOP_SOBEL_RGB = tf.constant(a, dtype=tf.float32)
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a = np.zeros([3, 3, 1, 1])
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a[0, :, :, :] = 1
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a[0, 1, :, :] = 2 # originally 2
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a[2, :, :, :] = -1
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a[2, 1, :, :] = -2
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TOP_SOBEL = tf.constant(a, dtype=tf.float32)
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a = np.zeros([3, 3, 3, 3])
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a[0, 0, :, :] = -2
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a[0, 1, :, :] = -1 
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a[1, 0, :, :] = -1
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a[1, 1, :, :] = 1
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a[1, 2, :, :] = 1
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a[2, 1, :, :] = 1
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a[2, 2, :, :] = 2
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EMBOSS_FILTER_RGB = tf.constant(a, dtype=tf.float32)
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a = np.zeros([3, 3, 1, 1])
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a[0, 0, :, :] = -2
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a[0, 1, :, :] = -1 
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a[1, 0, :, :] = -1
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a[1, 1, :, :] = 1
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a[1, 2, :, :] = 1
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a[2, 1, :, :] = 1
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a[2, 2, :, :] = 2
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EMBOSS_FILTER = tf.constant(a, dtype=tf.float32)
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