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182 | Graphic Utility Library | Feature Request | Low | Unicode Strings | New | All | |
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Task Description
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3179 | Graphic Utility Library | Bug Report | Low | TIFFReadRGBAImageOriented Premultiplication rounding er... | New | Win32 | |
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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). |
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3180 | Graphic Utility Library | Feature Request | Low | Raw Image Support | New | Win32 | |
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Task Description
use libraw to load and store raw images |
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153 | Graphic Utility Library | Feature Request | Low | Primary Ray Generation | New | All | |
Michael Pfeuti |
Task Description
ray generation for ray tracing |
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3181 | Graphic Utility Library | Feature Request | Low | OpenCL image | New | Win32 | |
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Task Description
Design image class such that it is transparent to the user if an algorithm operates in the opencl image or the host image |
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3183 | Graphic Utility Library | Feature Request | Low | Flag Handling | New | Win32 | |
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Task Description
Add type same flag handling. See how QT implemented this. this i a clever way to do it! |
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3193 | Graphic Utility Library | Bug Report | Low | File IO | New | Win32 | |
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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 |
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2912 | Graphic Utility Library | Feature Request | Low | Exposure Fusion Algorithm | New | All | |
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Task Description
implement
http://www.google.ch/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=0CDQQFjAB&url=http%3A%2F%2Fresearch.edm.uhasselt.be%2Ftmertens%2Fpapers%2Fexposure_fusion_reduced.pdf&ei=hM1tT4GXHcbF0QX785mOAg&usg=AFQjCNELiOkcIS6qwbObORwqUyizngxNoQ |
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3199 | Graphic Utility Library | Bug Report | Low | enum class | New | Win32 | |
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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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3197 | Graphic Utility Library | Bug Report | Low | c++11 timing | New | Win32 | |
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Task Description
use http://en.cppreference.com/w/cpp/chrono/high_resolution_clock instead of unix timing or glfw timing. |
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3187 | Graphic Utility Library | Feature Request | Low | BMP Image support | New | All | |
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Task Description
add IO for BMP files.
see gimp source code how to read/write bmp files |
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3198 | Graphic Utility Library | Bug Report | Low | allow float fps in video writing | New | Win32 | |
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Task Description
c->time_base = av_d2q(1.f/fps, 65535); |
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152 | Graphic Utility Library | Feature Request | Low | 1D - 4D noise function | New | All | |
Michael Pfeuti |
Task Description
perlin/simplex noise |
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2910 | Graphic Utility Library | Feature Request | Low | wrap pugixml | Closed | All | |
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Task Description
we should not depend on pugixml classes to implement the persistance. wrap in own xml classes to keep option of changing xml backend |
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3185 | Graphic Utility Library | Feature Request | Low | Video IO | Closed | Win32 | |
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Task Description
Realize video IO with ffmpeg/libav. |
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3186 | Graphic Utility Library | Feature Request | Low | Video Class | Closed | Win32 | |
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Task Description
Not only provide Video IO ( FS#3185 ) but also a video class. this makes it clearer when algorithms operate an a video (sequence of image). |
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3184 | Graphic Utility Library | Feature Request | Low | unsigned char image base type | Closed | Win32 | |
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Task Description
now we store the data as float (also RGBA class uses is based on float)
make this defineable which basic type should be used |
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3192 | Graphic Utility Library | Bug Report | Low | timing | Closed | All | |
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Task Description
timing macro that prints a timed stack trace.
enable/disabled by a define switch |
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3178 | Graphic Utility Library | Bug Report | Low | TIFF LZW/PackBits compression | Closed | All | |
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Task Description
LZW and PackBits compressed images are not read correctly.
They differ slighty from the ground truth (provided in unsigned char in a header). note that the differ exactly in the same magnitude.
when i write the read image in PNG it look +/- right. so there must be some systematic error. I suspect it to be the TIFFReadRGBAImageOriented function |
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3191 | Graphic Utility Library | Bug Report | Low | remove pugi dependency in header | Closed | All | |
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Task Description
XMLAttribute etc include the pugi header in the header. this shouldn't be that way.
Furthermore the conversion constructor from pugi -> gul should not be public. every thing must be done internally. |
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3188 | Graphic Utility Library | Feature Request | Low | Persistent Settings | Closed | Win32 | |
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Task Description
finish up TestSettingsManager |
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3182 | Graphic Utility Library | Feature Request | Low | OpenGL image | Closed | Win32 | |
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Task Description
Design image class such that it is transparent to the user if an algorithm operates in the opengl image or the host image |
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3195 | Graphic Utility Library | Bug Report | Low | OpenAL for audio playback | Closed | Win32 | |
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Task Description
Start code base for sound and audio handling. (video playback, syth., audio effects sandbox,....) |
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3177 | Graphic Utility Library | Bug Report | Low | Mutable String | Closed | All | |
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Task Description
make string mutable. it's not worth the pain of having immutable/noncopyable strings. Especially without smart pointers. It would become easier but still you cannot write
string x ("ksjcnsk"=
string y = x;
for(..)
{
y = x.Replace(...);
}
we need to create many instances on the heap and delete them again. |
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3176 | Graphic Utility Library | Feature Request | Low | Logging | Closed | All | |
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Task Description
a logging and error reporting mechanism with different backends |
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3194 | Graphic Utility Library | Feature Request | Low | Integrate glfw | Closed | Win32 | |
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Task Description
Use glfw for simple window creation, gl contex, intput, timing handling |
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2911 | Graphic Utility Library | Feature Request | Low | Image class | Closed | All | |
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Task Description
class to represent images.
implicit data sharing is needed to avoid expensive assignment operator |
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3196 | Graphic Utility Library | Feature Request | Low | GLSL Shader handling | Closed | Win32 | |
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Task Description
load source compile it and return a program. |
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3189 | Graphic Utility Library | Bug Report | Low | Folder creation, existence testing, deletion | Closed | Win32 | |
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Task Description
Folder class to handling the mentioned operations. |
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3190 | Graphic Utility Library | Bug Report | Low | Clean Test Output folder | Closed | Win32 | |
Michael Pfeuti |
Task Description
the test output folder is not clear. this can lead to wrong test results |