Specifications

Intel
®
Image Processing Library Reference Manual
2-10
2
tile number, not pixel number, and count from the origin at (0,0);
mode is one of the following:
IPL_GET_TILE_TO_READ get a tile for reading;
the tile data must be returned in
img->tileInfo->tileData
and must not be changed;
IPL_GET_TILE_TO_WRITE get a tile for writing;
the tile data must be returned in
img->tileInfo->tileData
and may be changed;
changes will be reflected in the image;
IPL_RELEASE_TILE release tile; commit writes.
Memory pointers provided by a get function will not be used after the
corresponding release function has been called.
ROI and Tiling
The meaning and behavior of ROI for a tiled image are identical to those
for a non-tiled image. As with all coordinates in tiled images, the origin of
the ROI is offset from the origin of the image, not of any one tile.
In-Place Operations and Tiling
Many functions can perform in-place operations even with tiling; see
Appendix A to check whether this feature is supported for a particular
function. If the source and destination image pointers are not equal, no
support for source and destination overlap is provided.
Note that the presence of the IplROI structure does not affect this
restriction.