how to get binary image from histogram?

I'm new to matlab. Some on please help me to obtain binary segmentation form histogram.

thank you

Answer 1

[Image Analyst]

You pick a threshold and then do

binaryImage = grayImage < thresholdValue;

if you want any more advice, post an image and say what you want to find or measure. The threshold can be chosen form the histogram, for example from my interactive thresholding application: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862

[Ibrahim Thorig]

Dear;

thank you for the support. I actually want get history gram of the attached and convert the history gram to binary segment.

thanks

[Image Analyst]

I don't know what a history gram is. Can you explain it? And what part of the image do you want to be true and what part to be false?

[Ibrahim Thorig]

sorry its histogram, initially generate histogram of the image, then remove background, so the only white area (image) should show.

[Image Analyst]

[pixelCounts, grayLevels] = imhist(grayImage, 256);

binaryImage = grayImage < 128;

Do the above thresholding for each color channel and then AND the 3 binary images to get the overall binary image for the color image.