visual-hash 3.3.2

A simple library that provides perceptual hashing and difference calculation for images.
Documentation 
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//! Hash an image and print the Base64 value

use visual_hash::HasherConfig;

use std::env;

fn main() -> Result<(), String> {
    let args = env::args().collect::<Vec<_>>();
    assert_eq!(args.len(), 2);

    let image = image::open(&args[1]).map_err(|e| format!("failed to open {}: {}", &args[1], e))?;

    let hash = HasherConfig::new()
        .hash_size(8, 8)
        .to_hasher()
        .hash_image(&image);

    let hash_str = hash
        .as_bytes()
        .iter()
        .map(|b| format!("{:02x}", b))
        .collect::<String>();

    println!("{}: {}", &args[1], hash_str);

    Ok(())
}