Function morphology_ex 

pub fn morphology_ex<T: PixelComponent, const CHANNELS: usize>(
    input: ImageView<'_, T, CHANNELS>,
    operation: MorphologyOperation,
    element: &StructuringElement,
    iterations: usize,
    border: BorderMode<T, CHANNELS>,
) -> VisionResult<Image<T, CHANNELS>>

Applies a composite morphology operation.