Struct PerceptualHash 

pub struct PerceptualHash {
    pub algorithm: PhashAlgorithm,
    pub hash_bits: u32,
}

Perceptual hash for image fingerprinting

Fields

algorithm: PhashAlgorithm

Algorithm to use

hash_bits: u32

Hash size in bits (must be power of 2, max 64)

Implementations

impl PerceptualHash

pub fn new(algorithm: PhashAlgorithm) -> Self

Create new hasher with algorithm

pub fn compute(&self, image: &[Rgb], width: u32, height: u32) -> u64

Compute hash for image

pub fn distance(hash1: u64, hash2: u64) -> u32

Hamming distance between hashes (0 = identical)

pub fn is_similar(hash1: u64, hash2: u64, threshold: u32) -> bool

Are images perceptually similar? (distance <= threshold)

Trait Implementations

impl Clone for PerceptualHash

fn clone(&self) -> PerceptualHash

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PerceptualHash

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for PerceptualHash

fn default() -> Self

Returns the “default value” for a type.