InverseImagePyramid
InverseImagePyramid[pyr] reconstructs an image from an ImagePyramid object pyr.
InverseImagePyramid[pyr,pyrtype] assumes the specified pyramid type pyrtype.
InverseImagePyramid[pyr,pyrtype,n] reconstructs up to pyramid level n.
InverseImagePyramid[pyr,pyrtype,{size}] reconstructs up to the smallest pyramid level larger than the specified size.
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