Crate blockhash

A perceptual hashing algorithm for detecting similar images.

This is an implementation of the Blockhash algorithm, and can produce 16-, 64-, 144-, and 256-bit perceptual hashes.

Examples

Basic usage:

use blockhash::blockhash256;

let img = image::open("images/512x512_rgb.png").unwrap();
let hash = blockhash256(&img);

assert_eq!(
    hash.to_string(),
    "9cfde03dc4198467ad671d171c071c5b1ff81bf919d9181838f8f890f807ff01",
);

Feature flags

• std: Enables features that require the Rust Standard Library (enabled by default).
• image: Enables integration with the image crate.

Structs

Blockhash16

A 16-bit hash digest.

Blockhash64

A 64-bit hash digest.

Blockhash144

A 144-bit hash digest.

Blockhash256

A 256-bit hash digest.

BlockhashParseError

Traits

Image

Provides access to image data.

Functions

blockhash16

Generates a 16-bit perceptual hash of an image.

blockhash64

Generates a 64-bit perceptual hash of an image.

blockhash144

Generates a 144-bit perceptual hash of an image.

blockhash256

Generates a 256-bit perceptual hash of an image.