what's the common way for segmenting a text from an image using matlab?

Question

I have searched about this field and I found some papers that present new methods to extracting texts from images, but I have a grayscale image consists of a simple background and some texts.so I need a method that everyone works with it. please provide details on how this can be done.

Answer 1

Here an article about text segmentation.

the article

And here an easy way to segment your image in 2 class.

I = imread('...'); % Your board image
ThreshConstant = 1; % Try to vary this constant.

bw = im2bw(I , ThreshConstant * graythresh(I)); % Black-white image

SegmentedImg = I.*repmat(uint8(bw), [1 1 3]);

Just do imshow(bw); and you will have a 2 color image normally well segmented.

If the threshold is too strong, try to turn around 0.5 to 1.5 with ThreshConstant.