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2020-03-26 00:43:26 -0600	marked best answer	Simple raw pixel colour changing I have check already in OpenCV forum, this is not duplicate question. I want to change a colour in an image, say with `[B,G,R]` value `[49,51,31]` I used a loop to change pixel with these intensity values to white `[255,255,255]` Here's a loop in python `for row in range(r): for col in range(c): if np.all(cim[row,col] == [49,51,31]): cim[row,col] = [255,255,255]` It takes around `30 seconds` for my current test image of resolution `[1908,1429]` to complete this. I came across this post changing all the `Red` values in a colour image `< 255` to `255` `img[img[:, :, 2] < 255, 2] = 255` using numpy fancy indexing I tried out same for the above condition of mine `cim1[cim1[:,:]==[49,51,31]] =[255,255,255]` But I'm getting this `error` `cim1[cim1[:,:]==[49,51,31]] =[255,255,255] ValueError: NumPy boolean array indexing assignment cannot assign 3 input values to the 51068 output values where the mask is true` Any solution? Anyone?
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2019-05-28 19:24:59 -0600	edited question	Detect when the imshow window is closed using X by user Detect when the imshow window is closed using X by user I would like to know if the user has closed the imshow window us
2019-05-28 19:24:27 -0600	edited question	Detect when the imshow window is closed using X by user Detect when the imshow window is closed using X by user I would like to know if the user has closed the imshow window us
2019-05-28 19:12:24 -0600	edited question	Detect when the imshow window is closed using X by user Detect when the imshow window is closed using X by user I would like to know if the user has closed the imshow window us
2019-05-28 19:03:05 -0600	edited question	Detect when the imshow window is closed using X by user Detect when the imshow window is closed using X by user I would like to know if the user has closed the imshow window us
2019-05-28 19:01:48 -0600	asked a question	Detect when the imshow window is closed using X by user Detect when the imshow window is closed using X by user I would like to know if the user has closed the imshow window us
2019-05-28 19:01:41 -0600	asked a question	Detect when the imshow window is closed using X by user Detect when the imshow window is closed using X by user I would like to know if the user has closed the imshow window us
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2018-06-11 01:52:43 -0600	edited question	How to make an image more vibrant in colour using OpenCV? How to make an image more vibrant in colour using OpenCV? I need to enhance few of the images before processing them. I
2018-06-08 07:32:13 -0600	edited question	How to make an image more vibrant in colour using OpenCV? How to make an image more vibrant in colour using OpenCV? I need to enhance few of the images before processing them. I