D 2013-09-28T19:10:01.895 L Dilate P 9404944160d6f8f25df6fc648b226cca122d202e U user W 375

Dilate

Application of structural element (like kernel in convolution matrix) on binary image to get more "fat" image. See more [http://en.wikipedia.org/wiki/Dilation_%28morphology%29|here]. For example:
Original image:

Output image:

Z d71971a6b7c83372a39f35298230d4ef