U-Net with upsampling layer under caffe
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copy the src/caffe/layers/upsample_layer.cpp and src/caffe/layers/upsampling_layer.cu and include/caffe/layers/upsample_layer.h to your caffe
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edit the src/caffe/proto/caffe.proto add a declaration of parameters used in upsample_layer and give the parameter a unique ID add a line inside message LayerParameter {}
// Parameter for upsample_layer. optional UpsampleParameter upsample_param = 152;
add a line after message LayerParameter {} // message for upsample parameter message UpsampleParameter { optional int32 scale = 1 [default = 1]; }
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re-build the source code of caffe in vs. if you use python interference, don't forget copy the released file in \Build\x64\Release\pycaffe\caffe to site-packages of python path.
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I modified the prototxt file of unet network with deconvolution layer, because its params are difficult to initialize. I always have trouble in training deconvolution layer. the deconvolution layer is replaced by upsampling layer + convolution layer with 2*2 kernel, which is as same structure as unet in keras.
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you should modify the parameter offset in crop layer to make sure the bottom0 blob is cropped in center. the offsite=(bottom0-bottom1)/2, note that bottom is the one to be cropped and it is larger.
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you can try your own data now!