Struct FeaturePrint 

pub struct FeaturePrint {
    pub element_type: i32,
    pub element_count: usize,
    pub data: Vec<u8>,
}

Available on crate feature feature_print only.

A semantic image embedding produced by Apple’s vision pipeline.

Distances between two prints (e.g. cosine or L2) measure content similarity — useful for clustering, deduplication, and content-based image search.

Fields

element_type: i32

Underlying element type — 1 = Float32, 2 = Float64.

element_count: usize

Vector dimensionality.

data: Vec<u8>

Raw element bytes (length = element_count * 4 or * 8).

Implementations

impl FeaturePrint

pub fn as_f32(&self) -> Option<Vec<f32>>

Decode the vector as f32 (only valid when element_type == 1).

pub fn as_f64(&self) -> Option<Vec<f64>>

Decode the vector as f64 (only valid when element_type == 2).

pub fn l2_distance(&self, other: &Self) -> Result<f64, VisionError>

Compute Euclidean (L2) distance to another print. Smaller = more similar.

Errors

Returns VisionError::InvalidArgument if the two prints have different element types or counts.

Trait Implementations

impl Clone for FeaturePrint

fn clone(&self) -> FeaturePrint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FeaturePrint

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

Formats the value using the given formatter.

impl PartialEq for FeaturePrint

fn eq(&self, other: &FeaturePrint) -> 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 FeaturePrint