Derives from kdu_roi_image
[Declared in "../apps/kdu_compress/roi_sources.h"]
Serves ROI mask information through the standardized interfaces offered by the base class, kdu_roi_image, for the simple case in which there is only one foreground region, having a rectangular geometry. Although somewhat useful in its own right, the main purpose of this object is to provide the simplest possible example of implementing the services advertised by the abstract base class, kdu_roi_image.
For a more sophisticated example, refer to kdu_roi_graphics.