Background and Foreground separation.

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.

[Image Analyst]

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]

Hi

Can you share a sample image which you want to segment?

[Image Analyst]

And what is background and what is foreground? The beach, the sea, the people, the sky?

[Sandeep parajuli]

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.

Answer 1

[Image Analyst]

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));

[Sandeep parajuli]

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.