Enum MergeMode 

#[repr(u32)]
pub enum MergeMode {
    KeepBest = 0,
    Union = 1,
}

What the tiled-detection merge emits for a group of boxes the match metric has joined.

Measured on the Ocean Cleanup ADIS 4K validation set (TOP2-836), the enclosing union cost about 0.05 AP50 on every frame (whole frame: 0.491 AP50 with plain NMS, 0.437 after the union merge, 0.490 with keep-best; 28-tile pipeline: 0.500 keep-best vs 0.442 union), so Self::KeepBest is the default. See the module docs.

The code is the one the C EF_MERGE_MODE_* enumerators and the Python MergeMode enum use.

Variants

KeepBest = 0

Keep the group’s highest-scoring box — its coordinates and its score — and drop the boxes it matched. Greedy NMS under the configured metric. Default.

The kept box is never grown, rescored or relabelled. It is emitted canonicalized, which every box entering the merge is, so it differs from the input only for a degenerate input box whose min exceeded its max.

Union = 1

Replace the group with its enclosing union carrying the group’s max score: the original GREEDYNMM merge (ModelPack metrics/tiled.py before merge_mode). Opt-in; inflates boxes and costs mAP.

Implementations

impl MergeMode

pub const fn code(self) -> u32

The shared code for this variant. Identical on every surface.

const, deliberately: a downstream binding that cannot write Variant = OtherEnum::Variant.code() in a #[pyclass] discriminant position (PyO3 requires a literal there) can still pin that literal to this value with a const _: () = assert!(...) – a build-time check instead of a hand-synced comment. See PyTensorMemory/PyPixelFormat in crates/python-common/src/tensor.rs for the consumer.

pub fn from_code(code: u32) -> Option<Self>

Reject an unknown code rather than guessing at one.

pub fn as_str(self) -> &'static str

The wire string form – stable, unlike Debug.

pub fn from_str_code(s: &str) -> Option<Self>

Reject an unknown string rather than guessing at one.

pub fn all() -> &'static [Self]

Every variant, for exhaustive cross-surface tests.

Trait Implementations

impl Clone for MergeMode

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for MergeMode

impl Debug for MergeMode

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

Formats the value using the given formatter.

impl Default for MergeMode

fn default() -> Self

Returns the “default value” for a type.

impl Eq for MergeMode

impl Hash for MergeMode

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 MergeMode

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for MergeMode