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Changed hues to reflect the number of unique classes #4

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Changed hues to reflect the number of unique classes #4

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12 changes: 10 additions & 2 deletions shuffle.py
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Original file line number Diff line number Diff line change
Expand Up @@ -61,11 +61,19 @@ def log_4(n):
def make_hilbert_png(ordering, png_filename):
'''Takes a shuffled list of integers 0...n and visualizes it as an image.'''
hilbert_order = log_4(len(ordering))
hues = np.linspace(0, 255, len(ordering))

order_to_hue_index_map = dict()
for index, order in enumerate(set(ordering)):
order_to_hue_index_map[order] = index + 1

# Add one to represent unmodified pixels
hues = np.linspace(0, 200, len(order_to_hue_index_map)+1)

image_dims = 2 ** hilbert_order
image_array = np.zeros([image_dims, image_dims, 3])
for index, coord in zip(ordering, hilbert_curve(hilbert_order)):
image_array[coord][0] = hues[index]
image_array[coord][0] = hues[order_to_hue_index_map[index]]

image_array[:, :, 1] = SATURATION
image_array[:, :, 2] = VALUE
image_array = image_array.astype(np.uint8)
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