This function is used to calculate the arbitrary function of the first order partial derivative (numerical methods), matlab implements five gray correlation degree computing model, Based on multi-document image obtained combining technique.

Based on SVPWM three-level inverter matlab simulation, Including scr ipt files and function files in the form, LFM pulse compression of the Matlab program.

Achieve a grayscale image and further control for video surveillance, Import data files as input parameters matlab program is running, This function is used to calculate the arbitrary function of the first order partial derivative (numerical methods)