removing smaller white pixel region

I have a image

http://imgur.com/jGhMG

in which i want to remove smaller white regions,need only text please help

Answer 1

[Image Analyst]

Have you tried bwareaopen() yet?

[kash]

s i tried but did not get result,is there any other method

[Image Analyst]

That's really strange. For me, bwareaopen removes blobs smaller than the number of pixels you specify. You better open a support case with the Mathworks to find out why your bwareaopen is not returning any results. Until they fix it on your system, you can try imopen or imreconstruct instead.

[kash]

i have many images for some images only it works,first i did for 4 with value as 20,it did not work,then it worked for other images,if i change the values it works,is there any function to remove values other than text