This is a GPU implementation of a simple backprojection algorithm for 2D data sets. It takes projection data as input, and returns the backprojection of this data.

Supported geometries: parallel, fanflat, fanflat_vec.

Configuration options

name type description
cfg.ProjectionDataId required The astra_mex_data2d ID of the projection data
cfg.ReconstructionDataId required The astra_mex_data2d ID for the backprojection data.
cfg.option.GPUindex optional Specifies which GPU to use. Default = 0.
cfg.option.PixelSuperSampling optional Specifiec the amount of pixel supersampling, i.e., how many (one dimension) subpixels are generated from a single parent pixel.