The hppiKernel is a handle to a structure that describes a small 2D buffer. The buffer contains kernel coefficients or mask values that are used for filtering and morphological operations. Create the handle using the hppiCreateKernel function with coefficients of HPP_DATA_TYPE_32F, HPP_DATA_TYPE_16S, or HPP_DATA_TYPE_8U type. After handle is created, the application cannot directly access the hppiKernel coefficients values. To release the handle, use the hppiDeleteKernel function.