Erosion and Dialation ??

 Apply 5 times the erosion morphological operator on the binary image. Display the resulting image. What size kernel did you use?
 Apply 5 times dilation morphological operator on image obtained in (3). Display the resulting image. What size kerne

without using matlab Function please

[Image Analyst]

See this: http://www.mathworks.com/matlabcentral/answers/38787-what-can-be-programmed-without-any-built-in-functions