Spaces:
Running
Running
File size: 2,274 Bytes
52cbb9c |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 |
from PIL import Image
def hex_to_rgb(value):
value = value.lstrip('#')
length = len(value)
return tuple(int(value[i:i + length // 3], 16) for i in range(0, length, length // 3))
def luminance(color):
# Use the ITU-R BT.709 formula
r, g, b = color
return 0.2126 * r + 0.7152 * g + 0.0722 * b
# def interpolate_color(color1, color2, factor):
# return tuple(int(c1 * (1 - factor) + c2 * factor) for c1, c2 in zip(color1, color2))
def quadratic_interpolate(factor):
#make the interpolation closer to the second color
return factor ** 2
def interpolate_color(color1, color2, factor):
adjusted_factor = quadratic_interpolate(factor)
return tuple(int(c1 * (1 - adjusted_factor) + c2 * adjusted_factor) for c1, c2 in zip(color1, color2))
def remap_image_colors(image_path, hex_palette):
# img = Image.open(image_path)
img = Image.fromarray(image_path)
rgb_palette = [hex_to_rgb(hex_code) for hex_code in hex_palette]
sorted_palette = sorted(rgb_palette, key=luminance)
img_rgb = img.convert("RGB")
pixels = img_rgb.load()
for y in range(img.height):
for x in range(img.width):
original_color = pixels[x, y]
lum = luminance(original_color)
# Find the closest palette colors by luminance (one darker, one brighter)
prev_color = sorted_palette[0]
next_color = sorted_palette[-1]
for i in range(1, len(sorted_palette)):
if luminance(sorted_palette[i]) > lum:
next_color = sorted_palette[i]
prev_color = sorted_palette[i-1]
break
# Interpolate between the two closest colors
lum_range = luminance(next_color) - luminance(prev_color)
if lum_range == 0:
mapped_color = prev_color
else:
factor = (lum - luminance(prev_color)) / lum_range
mapped_color = interpolate_color(prev_color, next_color, factor)
pixels[x, y] = mapped_color
img_rgb.save("result.jpg")
# hex_palette = ['#db5a1e', '#555115', '#9a690e', '#1f3a19', '#da8007', '#9a0633', '#b70406', '#d01b4b', '#e20b0f', '#f7515d']
# remap_image_colors('estampa.jpg', hex_palette)
|