def _render_spectrogram(mgc, output_file):
bitmap = np.zeros((mgc.shape[1], mgc.shape[0], 3), dtype=np.uint8)
mgc_min = mgc.min()
mgc_max = mgc.max()
for x in range(mgc.shape[0]):
for y in range(mgc.shape[1]):
val = (mgc[x, y] - mgc_min) / (mgc_max - mgc_min)
After Change
for x in range(mgc.shape[0]):
for y in range(mgc.shape[1]):
val = np.clip(mgc[x, y] * 255, 0, 255) // (mgc[x, y] - mgc_min) / (mgc_max - mgc_min)
color = val
bitmap[mgc.shape[1] - y - 1, x] = [color, color, color]
