A number of standard file name extensions are assumed by the Tina system when reading and writing to disc. This allows a single image pathname to be used to generate multiple files for globally defined data (see Infrastructure Sub-Tools). File name extensions are delimited by the character "." and these should not be used elsewhere in filenames. Here we describe only the basic file types, other tool specific extensions (such as those used in the Matcher) will be described in the relavant sections of this guide.
Images are stored in AIFF (AIVRU Image File Format) in files with the ``aiff" postfix. In addition Tina is often used to deal with image pairs (via the Stereo subtool), this gives rise to the additional postfix of ``l" or ``r", eg:
widgets.l.aiff widgets.r.aifffor the stereo pair of ``widgets" images.
Edge data, 2D and 3D data are stored separately as:
widgets.l.edges widgets.l.poly widgets.polynote that the ``l" extension is dropped for the 3D case.
Camera geometry is also associated with each view projection on an individual basis as:
widgets.l.cam widgets.r.camThese nameing conventions are used only for convenience and the user can of course use other root names if so required provided that the expected extensions are retained. This will of course require additional user interaction when reading the data.
Tools designed to read and write multiple images include numeric fields which can be substituted into locations in the file name specified by thw ``#" and ``?" symbols. These tools also support the ``*" wildcard.