marker_separation/py/common.py

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import cv2
import numpy as np
def convert_color (color, color_space_a, color_space_b) :
pixel = np.zeros([1, 1, 3], dtype=np.uint8)
if color_space_a == 'RGB' :
pixel = cv2.cvtColor(pixel, cv2.COLOR_BGR2RGB)
elif color_space_a == 'LAB' :
pixel = cv2.cvtColor(pixel, cv2.COLOR_BGR2LAB)
elif color_space_a == 'HSV' :
pixel = cv2.cvtColor(pixel, cv2.COLOR_BGR2HSV)
#default is BGR
pixel[:] = color
if color_space_a == 'RGB' and color_space_b == 'BGR' :
b = cv2.COLOR_RGB2BGR
elif color_space_a == 'BGR' and color_space_b == 'RGB' :
b = cv2.COLOR_BGR2RGB
elif color_space_a == 'RGB' and color_space_b == 'LAB' :
b = cv2.COLOR_RGB2LAB
elif color_space_a == 'LAB' and color_space_b == 'RGB' :
b = cv2.COLOR_LAB2RGB
elif color_space_a == 'BGR' and color_space_b == 'LAB' :
b = cv2.COLOR_BGR2LAB
elif color_space_a == 'LAB' and color_space_b == 'BGR' :
b = cv2.COLOR_LAB2BGR
elif color_space_a == 'HSV' and color_space_b == 'LAB' :
b = cv2.COLOR_HSV2LAB
elif color_space_a == 'LAB' and color_space_b == 'HSV' :
b = cv2.COLOR_LAB2HSV
elif color_space_a == 'RGB' and color_space_b == 'HSV' :
b = cv2.COLOR_RGB2HSV
elif color_space_a == 'HSV' and color_space_b == 'RGB' :
b = cv2.COLOR_HSV2RGB
elif color_space_a == 'BGR' and color_space_b == 'HSV' :
b = cv2.COLOR_BGR2HSV
elif color_space_a == 'HSV' and color_space_b == 'BGR' :
b = cv2.COLOR_HSV2BGR
cvt = cv2.cvtColor(pixel, b)
return cvt[0, 0]
def closest_color (colors, color):
colors = np.array(colors)
color = np.array(color)
distances = np.sqrt(np.sum((colors - color) ** 2, axis=1))
index_of_smallest = np.where(distances == np.amin(distances))
smallest_distance = colors[index_of_smallest]
return smallest_distance
def create_colored_image (width, height, bgr_color):
image = np.zeros((height, width, 3), np.uint8)
image[:] = bgr_color
return image