Lines Matching refs:derivative

58     For example, for the coarse-granularity derivative, a single x derivative
59     could be computed for each 2x2 group of pixels, using that same derivative
60     value for all 4 pixels.  For the fine-granularity derivative, two
65     To select the coarse derivative, use:
71     To select the fine derivative, use:
164     "In some implementations, varying degrees of derivative accuracy for dFdx 
174     "Returns the partial derivative of p with respect to the window x
180     "Returns the partial derivative of p with respect to the window y 
190     "Returns the partial derivative of p with respect to the window x
199     "Returns the partial derivative of p with respect to the window y
277         Generally, the descriptive part of the derivative section may need