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Summer of Code - Getting Started: Difference between revisions
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* '''Potential mentors''' | * '''Potential mentors''' | ||
: [https://octave.discourse.group/u/cbm Colin B. Macdonald], [https://octave.discourse.group/u/mtmiller Mike Miller], Abhinav Tripathi | : [https://octave.discourse.group/u/cbm Colin B. Macdonald], [https://octave.discourse.group/u/mtmiller Mike Miller], Abhinav Tripathi | ||
== Improve TIFF image support == | |||
[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 TIFF and many others image formats]. 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. | |||
** Building GM with '''low quantum''' 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. | |||
* GM hides details of the image such as whether the image file is indexed. This makes it hard to access the real data stored on file. | |||
This project aims to implement better TIFF image support using [https://en.wikipedia.org/wiki/Libtiff libtiff], while leaving GM handle all other image formats. After writing a [https://octave.org/doc/v6.1.0/classdef-Classes.html classdef] interface to libtiff, improve the Octave functions {{manual|imread}}, {{manual|imwrite}}, and {{manual|imfinfo}} to make use of it. | |||
* '''Project size''' [[#Project sizes | [?]]] and '''Difficulty''' | |||
: ~350 hours (medium) | |||
* '''Required skills''' | |||
: Octave, C/C++ | |||
* '''Potential mentors''' | |||
: [https://octave.discourse.group/u/carandraug Carnë Draug] | |||
== PolarAxes and Plotting Improvements == | == PolarAxes and Plotting Improvements == | ||