Function gaussian_blur_u8_into 

pub fn gaussian_blur_u8_into<const CHANNELS: usize>(
    input: ImageView<'_, u8, CHANNELS>,
    kernel_width: usize,
    kernel_height: usize,
    sigma_x: f64,
    sigma_y: f64,
    border: BorderMode<u8, CHANNELS>,
    output: &mut [u8],
    workspace: &mut GaussianBlurU8Workspace,
) -> VisionResult<()>

Applies the specialized u8 Gaussian blur into caller-owned packed output and workspace.