What is valid input range for convolution neural network?
<p>I uses CONV-maxpool-CONV-maxpool-CONV-maxpool-CONV-maxpool-hidden-logistic architecture for image detection application. 
Though most of examples normalize image intensity to [0,1] range.
But it seems not good because mean of input is not zero. that is not whitened input.
Is there any trial to use [-0.5,0.5] input range?</p>