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#!/usr/bin/env python
from materialyoucolor.dislike.dislike_analyzer import DislikeAnalyzer
from materialyoucolor.hct import Hct
from materialyoucolor.quantize import ImageQuantizeCelebi
from materialyoucolor.utils.math_utils import sanitize_degrees_int
class Score:
TARGET_CHROMA = 48.0
WEIGHT_PROPORTION = 0.7
WEIGHT_CHROMA_ABOVE = 0.3
WEIGHT_CHROMA_BELOW = 0.1
CUTOFF_CHROMA = 5.0
CUTOFF_EXCITED_PROPORTION = 0.01
def __init__(self):
pass
@staticmethod
def score(colors_to_population: dict, filter_enabled: bool = False) -> Hct:
colors_hct = []
hue_population = [0] * 360
population_sum = 0
for rgb, population in colors_to_population.items():
hct = Hct.from_int(rgb)
colors_hct.append(hct)
hue = int(hct.hue)
hue_population[hue] += population
population_sum += population
hue_excited_proportions = [0.0] * 360
for hue in range(360):
proportion = hue_population[hue] / population_sum
for i in range(hue - 14, hue + 16):
neighbor_hue = int(sanitize_degrees_int(i))
hue_excited_proportions[neighbor_hue] += proportion
# Score colours
scored_hct = []
for hct in colors_hct:
hue = int(sanitize_degrees_int(round(hct.hue)))
proportion = hue_excited_proportions[hue]
if filter_enabled and (hct.chroma < Score.CUTOFF_CHROMA or proportion <= Score.CUTOFF_EXCITED_PROPORTION):
continue
proportion_score = proportion * 100.0 * Score.WEIGHT_PROPORTION
chroma_weight = Score.WEIGHT_CHROMA_BELOW if hct.chroma < Score.TARGET_CHROMA else Score.WEIGHT_CHROMA_ABOVE
chroma_score = (hct.chroma - Score.TARGET_CHROMA) * chroma_weight
score = proportion_score + chroma_score
scored_hct.append({"hct": hct, "score": score})
scored_hct.sort(key=lambda x: x["score"], reverse=True)
# Get primary colour
primary = None
for cutoff in range(20, -1, -1):
for item in scored_hct:
if item["hct"].chroma > cutoff and item["hct"].tone > cutoff * 3:
primary = item["hct"]
break
if primary:
break
return DislikeAnalyzer.fix_if_disliked(primary) if primary else Score.score(colors_to_population, False)
def score(image: str) -> Hct:
return Score.score(ImageQuantizeCelebi(image, 1, 128))
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