gray values of pixels

please can anybody help me how to get gray values of pixels?? please do reply.....

Answer 1

[Image Analyst]

You can simply do

grayValue = yourImage(row, column);

or use an interactive tool like imtool() or impixel() or impixelinfo().

[Elysi Cochin]

thank u sir..

Answer 2

[MANJUNATH]

use imshow(data)

data i= the voltage value obtained from ur pixel output

[Elysi Cochin]

thanks sir...