Struct SegmIouCached 

pub struct SegmIouCached<'a> { /* private fields */ }

Kernel used by evaluate_segm and evaluate_segm_cached — same semantics as SegmIou but threads a single SegmComputeScratch across every compute call (so the dataset-wide pass amortizes per-cell Vec allocations across the ~36 k anns of a val2017 pass) and optionally consults a SegmGtCache for cross-call GT bbox+area reuse.

The cache reference is generalised through GtCacheRef so the same kernel feeds both the borrowed batch path (evaluate_segm_cached) and the Arc-owned streaming path (Self::with_arc_cache + crate::stream::StreamingEvaluator). Held by Mutex to satisfy Similarity: Send + Sync; the lock is uncontended in single-threaded use.

Implementations

impl SegmIouCached<'static>

pub fn with_arc_cache(cache: Arc<SegmGtCache>) -> Self

Construct a streaming-friendly kernel that owns its GT cache via Arc (ADR-0020). The kernel is 'static, so a crate::stream::StreamingEvaluator can store it across the worker thread’s lifetime; the same Arc is held by the FFI CocoDataset handle, so derivations populated on one path are visible to the other.

Trait Implementations

impl EvalKernel for SegmIouCached<'_>

fn kind(&self) -> KernelKind

Discriminator carried in the distributed-eval wire format (ADR-0031) so heterogeneous partials are refused at merge time. Required (no default): every kernel must declare its kind.

fn build_gt_anns( &self, gt_anns: &[CocoAnnotation], indices: &[usize], image: &ImageMeta, ) -> Result<Vec<SegmAnn>, EvalError>

Build the kernel’s GT annotation slice for one (image, category) cell. indices selects from gt_anns in the order the cell matcher will see.

fn build_dt_anns( &self, dt_anns: &[CocoDetection], indices: &[usize], image: &ImageMeta, parity_mode: ParityMode, ) -> Result<Vec<SegmAnn>, EvalError>

Build the kernel’s DT annotation slice for one (image, category) cell, in score-descending sorted order matching dt_indices.

fn extra_gt_ignore(&self, _ann: &CocoAnnotation) -> bool

Optional kernel-specific GT ignore override. Default false (no kernel reason to ignore).

fn is_keypoints(&self) -> bool

Marker: is this kernel the keypoints (OKS) kernel?

impl Similarity for SegmIouCached<'_>

type Annotation = SegmAnn

Per-impl annotation shape. The matching engine sees only the matrix produced by Self::compute; the annotation type stays inside the impl plus its caller.

fn compute( &self, gts: &[SegmAnn], dts: &[SegmAnn], out: &mut ArrayViewMut2<'_, f64>, ) -> Result<(), EvalError>

Writes the gt × dt similarity matrix into out.