Created
October 12, 2014 03:40
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opencv color picker
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| #! /usr/bin/env python2 | |
| import cv2 | |
| import numpy as np | |
| colors = [] | |
| def on_mouse_click (event, x, y, flags, frame): | |
| if event == cv2.EVENT_LBUTTONUP: | |
| colors.append(frame[y,x].tolist()) | |
| def main(): | |
| capture = cv2.VideoCapture(0) | |
| while True: | |
| _, frame = capture.read() | |
| hsv = cv2.cvtColor(frame, cv2.COLOR_BGR2HLS_FULL) | |
| if colors: | |
| cv2.putText(hsv, str(colors[-1]), (10, 50), cv2.FONT_HERSHEY_PLAIN, 2, (0, 0, 0), 2) | |
| cv2.imshow('frame', hsv) | |
| cv2.setMouseCallback('frame', on_mouse_click, hsv) | |
| if cv2.waitKey(1) & 0xFF == ord('q'): | |
| break | |
| capture.release() | |
| cv2.destroyAllWindows() | |
| # avgb = int(sum(c[0] for c in colors) / len(colors)) | |
| # avgg = int(sum(c[0] for c in colors) / len(colors)) | |
| # avgr = int(sum(c[0] for c in colors) / len(colors)) | |
| # print avgb, avgg, avgr | |
| minb = min(c[0] for c in colors) | |
| ming = min(c[1] for c in colors) | |
| minr = min(c[2] for c in colors) | |
| maxb = max(c[0] for c in colors) | |
| maxg = max(c[1] for c in colors) | |
| maxr = max(c[2] for c in colors) | |
| print minr, ming, minb, maxr, maxg, maxb | |
| lb = [minb,ming,minr] | |
| ub = [maxb,maxg,maxr] | |
| print lb, ub | |
| if __name__ == "__main__": | |
| main() |
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