Documentation for SpatialPyramid

[dasguptar]

There is very little documentation in the SpatialPyramid function, and this makes it difficult for newcomers to understand what is going on. I have been able to understand what the module does, i.e. take a set of scales and a set of models, and apply each model to the corresponding scaled version of an input image. However, what are all the other parameters?

function SpatialPyramid:__init(ratios, processors, kW, kH, dW, dH, xDimIn, yDimIn,
                       xDimOut, yDimOut, prescaled_input)

What do kW, kH, dW, dH, DimIn, yDimIn, xDimOut, yDimOut represent?

[hogwild]

I also have the same doubt. After downscale the image, there is a process nn.SpatialPadding(), which involves those variable. But I don't understand why add such process ?

[soumith]

nn.SpatialPadding is used for negative padding (i.e. cropping the image).