Supersampling
The supersampling is an English term defining an action of oversampling.
In the field of the computer graphics, or returned in real-time, the supersampling is a process used to try anticréneler an image.
In image, sampling constitutes the pixels, the Crènelage takes place in space. The problem can thus be noted on repetitive reasons like checkerworks for example. It is about a correlation between sampling and the reason to be visualized. To avoid this problem, one can operate a filtering passes low. (a blur of ray two pixels) Or a probabilistic oversampling for décorréler samples. Oversampling consists in measuring the color of several points on the level it under pixel to know the color final of the pixel by moyennation or other Heuristique.
That can be in practice brought back to make the calculation of the image on a surface N ² time larger than that desired, then of redimensionner while passing by certain filters until the resolution wanted by the user.
This technique is greedy in time processor and space. For example with a supersampling x2, the image will be twice broader and high thus four larger times. The computing time is multiplied exactly by four for the program of Raytracing, a little less for returned real-time because the techniques of supersampling are optimized.
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