src/color_utils.py

from colormath.color_objects import sRGBColor, LabColor
from colormath.color_conversions import convert_color
from colormath.color_diff import delta_e_cie2000

def rgb_to_lab(rgb):
    """
    Convert an RGB color to LAB color.
    :param rgb: A tuple (R, G, B) with values ranging from 0 to 255.
    :return: A LabColor object.
    """
    srgb_color = sRGBColor(rgb[0], rgb[1], rgb[2], is_upscaled=True)
    lab_color = convert_color(srgb_color, LabColor)
    return lab_color

# Helper function to convert RGB to hex
def rgb_to_hex(rgb_color):
    r, g, b = rgb_color
    return "#%02X%02X%02X" % (int(r), int(g), int(b))
# Function to convert hex color to BGR
def hex_to_bgr(hex_color):
    hex_value = hex_color.lstrip("#")
    r, g, b = [int(hex_value[i:i + 2], 16) for i in (0, 2, 4)]
    return [b, g, r]

def hex_to_rgb(hex_color):
    hex_value = hex_color.lstrip("#")
    r, g, b = [int(hex_value[i:i + 2], 16) for i in (0, 2, 4)]
    return [r, g, b]

def calculate_color_distance_lab(color1, color2):
    """
    Calculate the distance between two colors in LAB space using the CIE2000 formula.
    :param color1: A tuple (R, G, B) with values ranging from 0 to 255.
    :param color2: A tuple (R, G, B) with values ranging from 0 to 255.
    :return: The distance between the two colors.
    """
    lab1 = rgb_to_lab(color1)
    lab2 = rgb_to_lab(color2)
    distance = delta_e_cie2000(lab1, lab2)
    return distance

# # Example usage
# color1 = (255, 215, 0)  # Golden Blonde RGB
# color2 = (255, 248, 220)  # Platinum Blonde RGB

# distance = calculate_color_distance_lab(color1, color2)
# print(f"Color distance in LAB space: {distance}")