Background and Foreground separation.

2020 6 13
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更新时间：2020 6 29
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I try to separate the foreground and background picture. The picture is two people are standing by the sea. How to separate the back ground and foreground. I use the color threshold but I got confused.Please help me out.

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Image Analyst
Image Analyst 2020-6-13
You could use image processing or computer vision. Like the foreground detector in the Computer Vision toolbox. Given what information you've provided, that's about all I can say.
Mahesh Taparia
Mahesh Taparia 2020-6-15
Hi
Can you share a sample image which you want to segment?
Image Analyst
Image Analyst 2020-6-15
And what is background and what is foreground? The beach, the sea, the people, the sky?
Sandeep parajuli
Sandeep parajuli 2020-6-28
编辑：Sandeep parajuli 2020-6-28
Hey guys sorry for late reply but,
Lets say, I have an RGB image and I binarize that image and I print out the pixels of the image where Foreground pixels are represent by 1 and backgraound pixels are represent 0.
After getting this I want to use the nested for loop so that I can search all 0 and 1 and if 0 is found convert that pixels color to black and if the 1 is found convert that pixels color to white. At last I want to convert that white color into original color.
I want the code for that.

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回答（1 个）

Image Analyst
Image Analyst 2020-6-28

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Try this to mask your image
% Mask the image using bsxfun() function to multiply the mask by each channel individually. Works for gray scale as well as RGB Color images.
maskedRgbImage = bsxfun(@times, rgbImage, cast(mask, 'like', rgbImage));

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Sandeep parajuli
Sandeep parajuli 2020-6-29
I try this code for this image but I think it doesnot work properly, I want to convert the backgound into black color and butterfly and flower into white color without using the matlab app tools.I want general code for RGB so that I can seperate background into black and foreground into white.

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