Table of Contents ▸ List of Commands ▸ Filtering ▸ hessian | ◀ heat_flow | idct ▶ |
hessian
Arguments:
- { xx | xy | xz | yy | yz | zz }...{ xx | xy | xz | yy | yz | zz },_boundary_conditions or
- (no arg) :
Description:
Compute the hessian components (second derivatives) of selected images along specified axes.boundary_conditions can be { 0:Dirichlet | 1:Neumann | 2:Periodic | 3:Mirror }.
(no arg) compute all significant components.
Default values:
boundary_conditions=1.
Example of use:
image.jpg hessian