How to Async Grayscale Image in Haskell - Code Snippet

-- Task: Async Grayscale Image
-- Language: Haskell

    -- Implementation for Async Grayscale Image
    let result = ...; -- Initialize variable
    -- TODO: Implement core logic here
    -- Step 1: Prepare data
    -- Step 2: Process Async Grayscale Image
    putStrLn("Done");