CODEWITHSUNDEEP
cimageimage-processingopencv
Aizen
Aizen

Reputation: 581

Increase the intensity of certain part of frame using opencv

Suppose there is a frame with some image.I want to display only those parts which have pixel intensity above 120 or 130. How can I do that with OpenCv ? Is there any commands to do so? Then i need to set those parts to some intensity of 190.

Upvotes: 0

Views: 508

Answers (2)

mevatron
mevatron

Reputation: 14011

As mentioned by astay13, you can use the threshold function like this:

Mat image = imread("someimage.jpg", 0); // flag == 0 means read as grayscale
Mat mask;

// this tells you where locations >= 120 pixel intensity are
threshold(image, mask, 120.0, 255.0, THRESH_BINARY); 

// this sets those locations to 190 based on the mask you just created
image.setTo(Scalar(190, 0, 0), mask);
imshow("image", image);

Hope that is helpful!

Upvotes: 1

astay13
astay13

Reputation: 6927

You could try the cvThreshold function. For the second part, cvFloodFill might be what you need.

Upvotes: 1

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