TIFF Tag TileLength
|Code||323 (hex 0x0143)|
|Type||SHORT or LONG|
The tile length (height) in pixels. This is the number of rows in each tile.
Assuming integer arithmetic, three computed values that are useful in the following field descriptions are:
TilesAcross = (ImageWidth + TileWidth - 1) / TileWidth
TilesDown = (ImageLength + TileLength - 1) / TileLength
TilesPerImage = TilesAcross * TilesDown
These computed values are not TIFF fields; they are simply values determined by the ImageWidth, TileWidth, ImageLength, and TileLength fields.
TileLength must be a multiple of 16. This restriction improves performance in some graphics environments and enhances compatibility with compression schemes such as JPEG. Tiles need not be square.