Struct CrossClassIous 

pub struct CrossClassIous { /* private fields */ }

Per-image cross-class IoU matrices and the parallel category-index vectors that label each row/column.

Per ADR-0023, this is the side-pass output the TIDE Cls/Both bin assignment and the confusion-matrix capability both consume: IoU(DT_class_A, GT_class_B) for every (A, B) pair on a given image, materialized once per call.

Keyed by image_idx — the position of the image in the id-ascending ordering used by crate::evaluate_with. For each populated image:

• inner[i] is the dense (D_total, G_total) IoU matrix produced by the kernel on the un-class-filtered per-image lists.
• dt_classes[i] carries the category index per row, in the same order as the matrix’s row axis.
• gt_classes[i] carries the category index per column.

The “category index” is the position of the category in the deterministic id-ascending category ordering crate::evaluate_with uses for its K axis — the same indexing the rest of the spine reasons in. It is not the COCO category id.

Distinct from RetainedIous: that store carries same-class IoU keyed (category_index, image_index) for the result-tables product, whereas this store carries the cross-class matrix keyed purely by image. The two have different consumers and different keying; they are deliberately not unified (per ADR-0023).

Images with no GTs and no DTs are absent from the maps.

Implementations

impl CrossClassIous

pub fn new() -> Self

Construct an empty store.

pub fn len(&self) -> usize

Number of images with retained cross-class data.

pub fn is_empty(&self) -> bool

True when no images are retained.

pub fn get(&self, image_idx: usize) -> Option<ArrayView2<'_, f64>>

Borrow the cross-class IoU matrix for image_idx, if present. Rows index DTs (in the Self::dt_classes order); columns index GTs (in the Self::gt_classes order).

pub fn dt_classes(&self, image_idx: usize) -> Option<&[usize]>

Borrow the per-row DT category indices for image_idx.

pub fn gt_classes(&self, image_idx: usize) -> Option<&[usize]>

Borrow the per-column GT category indices for image_idx.

Trait Implementations

impl Clone for CrossClassIous

fn clone(&self) -> CrossClassIous

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CrossClassIous

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

Formats the value using the given formatter.

impl Default for CrossClassIous

fn default() -> CrossClassIous

Returns the “default value” for a type.