[RGB,alpha] = readRGBAImage()
[RGB,alpha] = readRGBAImage() reads an entire image using the RGBA interface. RGB consists of an m-by-n-by-3 colormetric image, where m and n are the height and width of the tile, respectively. 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 pixel values may be transformed depending upon the values of the following tags:
Return all image data as RGB, with associated alpha matting.
t = Tiff('example.tif','r'); t.setDirectory(2); [RGB,A] = t.readRGBAImage(); t.close();
This method corresponds to the TIFFReadRGBAImage function 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 LibTiff - TIFF Library and Utilities.