Summer of Code - Getting Started: Difference between revisions

[https://en.wikipedia.org/wiki/TIFF Tag Image File Format (TIFF)] is the de facto standard for scientific images.  Octave uses the [http://www.graphicsmagick.org/ GraphicsMagic] (GM) C++ library to handle [http://www.graphicsmagick.org/formats.html many image formats], including TIFF. However, GM still has several limitations:

* GM has build option {{codeline|quantum}} which defines the bitdepth to use when reading an image. Building GM with high quantum means that images of smaller bitdepth will take a lot more memory when reading, but building it too low will make it impossible to read images of higher bitdepth. It also means that the image needs to always be rescaled to the correct range.

* GM supports unsigned integers only, thus incorrectly reading files such as TIFF with floating point data.

This project aims to implement better TIFF image support, which is the de facto standard for scientific images, while leaving GM handle all other image formats.

 

* implement the Tiff class, which is a wrapper around libtiff, using classdef. To avoid creating too many private __oct functions, this project could also create a C++ interface to declare new Octave classdef functions.

* improve {{manual|imread}}, {{manual|imwrite}}, and {{manual|imfinfo}} for tiff files using the newly created Tiff class

* clean up and finish the dicom package to include into Octave core

* prepare a Matlab-compatible implementation of the FITS package for inclusion in Octave core

: Knowledge of C++ and C, since most libraries are written in those languages.