Color a pixel in python opencv
Question: I need to color a pixel in an image. I use opencv and python.  
I tried `img[x,y]=[255 255 255]` to color a `pixel(x,y)` but it wont work :(

Is there is any mistake in this?  
Can you suggest any method?

Thanks in advance.


Answer: This works for me, just change it to load your own image:

    
    
    import cv2
    
    img = cv2.imread("C:\calibrate\chess\color001.jpg", cv2.CV_LOAD_IMAGE_COLOR);
    
    ## Make pixels row and column 300-400 black
    img[300:400,300:400] = (0,0,0)
    
    cv2.imshow('title',img)
    cv2.waitKey(0)
    cv2.destroyAllWindows()
    

