Last active
December 31, 2020 05:11
-
-
Save PetteriAimonen/28bc22bc5caacb4fe31489f93f71e9d8 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!/usr/bin/python3 | |
# Interpolate depth maps | |
from PIL import Image | |
import math | |
import random | |
contours = Image.open("contours.png") | |
contourspx = contours.load() | |
w, h = contours.size | |
def nearest_contour(x0, y0, angle): | |
dx = math.cos(angle) | |
dy = math.sin(angle) | |
for i in range(300): | |
x = x0 + dx * i | |
y = y0 + dy * i | |
if x < 0 or y < 0 or x >= w or y >= h: return None, None | |
px = contourspx[x, y] | |
if px != 255: | |
return px, i | |
return None, None | |
result = contours.copy() | |
resultpx = result.load() | |
for y in range(0, h): | |
print("%d/%d" % (y, h)) | |
if y % 10 == 0: result.save("result.png") | |
for x in range(0, w): | |
if contourspx[x, y] == 255: | |
sum_vals = 0.0 | |
sum_weights = 0.0 | |
for angle in range(0, 360, 5): | |
rad = angle * math.pi / 180 | |
c, d = nearest_contour(x, y, rad) | |
if c is not None: | |
weight = 1.0 / d**0.9 | |
sum_vals += c * weight | |
sum_weights += weight | |
if sum_weights == 0: | |
v = (resultpx[x - 1, y] + resultpx[x, y - 1]) / 2 | |
else: | |
v = sum_vals / sum_weights | |
resultpx[x, y] = int(round(v + random.normalvariate(0.0, 1.0))) | |
result.save("result.png") |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment