Day: February 6, 2023

I was not aware that OpenCV has a built-in slider, I usually use cvui for that. But for simple application, the built-in function is more handy import cv2 cap=cv2.VideoCapture(0) low_H=99 high_H=125 def on_low_H_thresh_trackbar(var): global low_H low_H=var def on_high_H_thresh_trackbar(var): global high_H high_H=var cv2.namedWindow(‘frame’) cv2.createTrackbar(‘Low H’,’frame’,low_H,255,on_low_H_thresh_trackbar) cv2.createTrackbar(‘High H’,’frame’,high_H,255,on_high_H_thresh_trackbar) while True: ret, frame=cap.read() color=cv2.cvtColor(frame,cv2.COLOR_BGR2HSV) frame=cv2.inRange(color,(low_H,0,0),(high_H,255,255)) cv2.imshow(‘frame’,frame) if cv2.waitKey(50)…