Regions of Interest

Many Intel® IPP image processing functions operate with a region of interest (ROI). These functions include an R descriptor in their names.

A ROI can be the full image or a subset. This can simplify thread or cache blocking.

Many functions sample a neighborhood and cannot provide values for an entire image. In this case a ROI must be defined for the subset of the destination image that can be computed.

For more complete information about compiler optimizations, see our Optimization Notice.
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