Struct PHash 

pub struct PHash(/* private fields */);

A 64-bit perceptual hash derived from DCT coefficients.

Implementations

impl PHash

pub const fn from_bits(bits: u64) -> Self

Create a pHash from a raw 64-bit value.

pub const fn bits(self) -> u64

Return the raw 64-bit value.

pub fn hamming_distance(self, other: Self) -> u32

Hamming distance between two hashes (number of differing bits).

pub fn similarity(self, other: Self) -> f64

Similarity in range [0.0, 1.0].

1.0 = identical, 0.0 = maximally different.

pub fn is_near_duplicate(self, other: Self) -> bool

Returns true if the two hashes are considered near-duplicates.

The default threshold is Hamming distance ≤ 10 (≈84 % similarity).

pub fn within_distance(self, other: Self, max_distance: u32) -> bool

Returns true if Hamming distance is within max_distance.

pub fn to_hex(self) -> String

Hex string representation.

pub fn from_hex(s: &str) -> DedupResult<Self>

Parse from hex string.

Errors

Returns an error if the string is not a valid 16-character hex value.

Trait Implementations

impl Clone for PHash

fn clone(&self) -> PHash

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PHash

impl Debug for PHash

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

Formats the value using the given formatter.

impl Display for PHash

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

Formats the value using the given formatter.

impl Eq for PHash

impl Hash for PHash

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for PHash

fn eq(&self, other: &PHash) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for PHash