Read tile data using RGBA interface
[RGB,alpha] = readRGBATile(tiffobj,row,col)
[RGB,alpha] = readRGBATile(tiffobj,row,col) reads a tile from the TIFF
file associated with the
Tiff object using the RGBA interface.
col are the one-based row and column
numbers of any pixel in the requested tile.
RGB consists of an
n-by-3 colormetric image, where
n are the height and width of the tile,
alpha is the associated alpha matting. If the image
does not have associated alpha matting, then
alpha is a matrix with
all values set to 255 (transparent).
The tile is clipped if the tile boundaries extend past the edges of the image.
The pixel values may be transformed depending upon the values of the following tags:
Tiff object and read the first tile
using the RGBA interface.
t = Tiff('example.tif','r'); t.setDirectory(1); [RGB,A] = t.readRGBATile(1,1); t.close();
This method corresponds to the
in the LibTIFF C API.
To use this method, you must be familiar with LibTIFF version
4.0.0, as well as the TIFF specification and technical notes. View
this documentation at
- TIFF Library and Utilities.