清空筛选条件
清空筛选条件

binary mask of RGB image

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Lamya Mohammad
Lamya Mohammad 2019-10-23
评论： Image Analyst 2022-7-20
Hello everyone,
I'm new to matlab
I'm wondering if is there is a function that can help me in performing the followings:
I have an RGB image, I'm gonna spicify a range of values for every RGB component.
so I have three ranges of values.
then, the values in the image that in these ranges, I want them to be white
values outside the range will be black.
How can I write a code perform this?
Thank you

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Image Analyst
Image Analyst 2019-10-24
Try this:
% Extract the individual red, green, and blue color channels.
redChannel = rgbImage(:, :, 1);
greenChannel = rgbImage(:, :, 2);
blueChannel = rgbImage(:, :, 3);
redMask = redChannel >= redMin & redChannel <= redMax;
greenMask = greenChannel >= greenMin & greenChannel <= greenMax;
blueMask = blueChannel >= blueMin & blueChannel <= blueMax;
finalMask = redMask | greenMask | blueMask;
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Imran Riaz
Imran Riaz 2022-7-20
Can you recommend any other way to remove the background automatically, bcz I have more that 4500 images.
Image Analyst
Image Analyst 2022-7-20
I'd convert to HSV and look for Saturation values below and above 0.25. Below will be white/gray, and above will be colored/skin. Use the Color Thresholder on the Apps tab.

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