Deep learning theory has received extensive attention of scholars all over the world because of its powerful modeling and high representational abilities.It solved the key problems of pattern recognition, such as the insufficiency of expression ability and dimen- sionality curse. Convolutional neural network learning, which imitates the biological vision （CNN） is a successful component of deep system. Local receptive field, sharing weights and down sampling are three important characteristics of CNN which lead it to be the hots- pot in the fi...
