Function morphology_ex 

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

Applies a composite morphology operation.