cvThreshold和cvAdaptiveThreshold实现方法，函数：cvAdaptiveThreshold( const void *srcIm, void *dstIm, double maxValue, int method, int type, int blockSize, double delta )

-cvThreshold and cvAdaptiveThreshold implementation method, the function: cvAdaptiveThreshold (const void* srcIm, void* dstIm, double maxValue, int method, int type, int blockSize, double delta)