Function filter_2d_separable 

fn filter_2d_separable<T, F, I, const N: usize>(
    image: &[T],
    destination: &mut [T],
    image_size: FilterImageSize,
    row_kernel: &[F],
    column_kernel: &[F],
) -> Result<(), ImageError>
where
    T: Copy + AsPrimitive<F> + Default + Send + Sync + KernelTransformer<F, I> + AsPrimitive<I>,
    F: Default + 'static + Copy,
    I: ToStorage<T> + Mul<I, Output = I> + Add<I, Output = I> + MulAdd<I, Output = I> + Send + Sync + PartialEq + Default + 'static + Copy,
    i32: AsPrimitive<F> + AsPrimitive<I>,
    f64: AsPrimitive<T>,

Performs 2D separable convolution on the image

Currently implemented only for symmetrical filters

Arguments

• image: Single plane image
• destination: Destination image
• image_size: Image size see FilterImageSize
• row_kernel: Row kernel, size must be odd!
• column_kernel: Column kernel, size must be odd!

If both kernels after kernel scan appears to be an identity then just copy is performed.