List of LeadRect objects representing the included areas of the form.
IncludeRectangles forms the region of the image that will be considered for feature extraction, any region outside the include region will be ignored.
IncludeRectangles has no rectangle then the whole image will be considered as one include region for feature extraction.
IncludeRectangles are Ored together then the ExcludeRectangles will be excluded from the include region.
For an example, refer to PageRecognitionOptions.