- Invalid = -1,
- Not used yet.
- Other = 0
- Other type is not used yet. Other type is not used yet.
- LC = 1
- lattice region (pixel coordinates)
- WC = 2
- image region (world coordinates)
- ArrSlicer = 3
- array slicer (pixel based with optional stride)
- nRegionTypes
- Number of recognized types only
- Abs = 1
- absolute
- RelRef = 2
- relative to reference pixel
- RelCen = 3
- relative to center
- nAbsRelTypes
- # relative to a direction # RelDir = 4, Number of recognized types only