in Computer Vision ~ read.

Detail-Preserving Pooling in Deep Networks(CVPR2018Oral)

Detail-Preserving Pooling in Deep Networks(CVPR2018Oral)

talk: link

a great paper

Pooling will not preserve details

they utilize a paper in siggraph to do details preserving downsampling.(down sampling = pooling wright?)

It is a inverse of biliterial filter.[idea: Detail = Original-down scale.]