Code in Python:
#importing libraries import cv2 import numpy as np def calledFunction(): pass img = np.zeros((1024,512,3),np.uint8); winName = 'Colour Palette'; cv2.namedWindow(winName); #add Blue Green Red trackbar cv2.createTrackbar('Blue',winName,0,255,calledFunction); cv2.createTrackbar('Green',winName,0,255,calledFunction); cv2.createTrackbar('Red',winName,0,255,calledFunction); while(True): cv2.imshow(winName,img); # Wait for Esc key to stop if cv2.waitKey(1) == 27: break; Blue = cv2.getTrackbarPos('Blue',winName); Green = cv2.getTrackbarPos('Green',winName); Red = cv2.getTrackbarPos('Red',winName); img[:]=[Blue,Green,Red]; #destroy all windows cv2.destroyAllWindows();
OUTPUT:
Thank you Rishika Gupta for this article.
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