function convolve
Convolve an image with a kernel. The resulting array is returned with bitpix -32.
Syntax
result = convolve(a, b)
Arguments
| a: | The array to be convolved. |
| b: | The kernel to convolve the image with. |
Notes
If a and b are of exactly the same size, the two are multiplied in fourier space. If b is smaller than a and a square matrix, a convolved with the kernel b is returned.