Creates a kernel with the following values: * \verbatim 0 -1 0 -1 4 -1 0 -1 0 \endverbatim * * \verbatim im.KernelLaplacian4() -> kernel: imImage [in Lua 5] \endverbatim * \ingroup kernel
See Implementation
Creates a kernel with the following values: * \verbatim 0 -1 0 -1 4 -1 0 -1 0 \endverbatim * * \verbatim im.KernelLaplacian4() -> kernel: imImage [in Lua 5] \endverbatim * \ingroup kernel