MATLAB: How can i partition HSV color space

color segmentationcolor spaceimage processingImage Processing Toolbox

if I partition the HSV space into two regions based on saturation, intensity values, will the range of hue get affected?

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No. Nothing will change. What does "partition" mean to you? Why do you think anything might change??? If you mean "segment" then you'll end up with a binary image, but nothing from the original image will change unless you intentionally change it.

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MATLAB: Increase hue of image

Take the hue image, and multiply it by something.

hsvImage = rgb2hav(rgbImage);
hsvImage(:,:,1) = hsvImage(:,:,1) * someFactor;
rgbImage = hsv2rgb(hsvImage);

I think you really mean increase the saturation, but whatever... The saturation channel is 2, so switch to that if you really want that.

MATLAB: How to convert the RGB color map into an HSV color map

No that does not make any sense. You can't just apply some different colormap to an indexed image and expect it to look sensible. It will look like garbage. And calculating the variance of a colormap is meaningless. Perhaps you want the color frequency image like this calculates but I don't know.

I think perhaps you're getting color map confused with colorspace. You want to do something, though I don't know what it is. And you think that this colormap approach is the way to do it, but it's not - it's a dead end. So why don't you tell me what you really want to do and I can recommend an approach. For example you want so segment out pixels of some particular color out of an image, or you want to classify the image into 5 different color classes.

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MATLAB: Increase hue of image

MATLAB: How to convert the RGB color map into an HSV color map

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