what is the optimal block size while dealing with gray scale images?

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Raman
Raman le 13 Fév 2013
i need to know the optimal block size

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Walter Roberson
Walter Roberson le 13 Fév 2013
It depends on the details of the hardware caches in your processor, and on the datatype of your data, and upon how your processing function manipulates the data. If your blocksize is too small then you make too many function calls, but as it gets larger the mathematics of the calculation might get more complex.

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