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IDProjectTask TypeSeveritySummaryStatus  descOperating SystemProgressAssigned To
3179Graphic Utility LibraryBug ReportLowTIFFReadRGBAImageOriented Premultiplication rounding er...NewWin32
0%
 Task Description TIFFReadRGBAImageOriented executes an alpha premultiplication even when the alpha value is stored as EXTRASAMPLE_UNASSALPHA. This leads to rounding errors. example: (correct mathematical rounding) gt: 226 and alpha 0.5 -> 127 read the premultiplied value: 226*127/255 = 112.56 -> 113 converting to nonpremultiplied value: 113*255/127 = 226.89 -> 227 gt: 225 and alpha 0.5 -> 127 read the premultiplied value: 225*127/255 = 112.06 -> 112 converting to nonpremultiplied value: 112*255/127 = 224.88 -> 225 so we have a difference of 1 or 0 between the ground truth and the read value after undoing the premultiplication. (incorrect mathematical rounding) gt: 226 and alpha 0.5 -> 127 read the premultiplied value: 226*127/255 = 112.56 -> 112 converting to nonpremultiplied value: 112*255/127 = 224.88 -> 224 so incorrect mathematical rounding leading to much worse results. Consider using a different way to read the tiff image (for instance ReadEncodedStrip).
3193Graphic Utility LibraryBug ReportLowFile IONewWin32
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 Task Description add file IO like writing to and reading from a file. this way we have less dependency on the GetData method of the String class
3197Graphic Utility LibraryBug ReportLowc++11 timingNewWin32
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 Task Description use http://en.cppreference.com/w/cpp/chrono/high_resolution_clock instead of unix timing or glfw timing.
3198Graphic Utility LibraryBug ReportLowallow float fps in video writingNewWin32
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 Task Description c->time_base = av_d2q(1.f/fps, 65535);
3199Graphic Utility LibraryBug ReportLowenum classNewWin32
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 Task Description Implement easy usable enum class based on http://stackoverflow.com/questions/1965249/how-to-write-java-like-enums-in-c make sure the have int->type and type->int conversion, toString method, and iteration facility.
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