Relative score gap required to distinguish the leading alternative.
Feature detector with its distance metric; "sift" unless set.
Maximum features retained per extraction window before global budgeting.
Maximum number of distinct validated alternatives returned.
Maximum retained independent features per image.
Conservative memory reservation ceiling, including copies and WASM.
Maximum decoded query area, checked before worker creation.
Maximum total decoded reference area.
Minimum independent support; cannot be below twelve. Other gates still apply.
Generic grayscale or technical-plan contrast normalization.
Nearest/second-nearest descriptor distance ratio threshold.
Maximum held-out p95 forward error in original reference pixels.
Opt-in exclusion of strongly coloured features; never changes the plan footprint.
Processing window core size, 128 through 1024 pixels; halos are additional.
Bounded extraction, acceptance and ranking settings. Supply partial overrides on MatchRequest.options; effective values are returned in diagnostics. DEFAULT_MATCH_OPTIONS lists shipped defaults. Increasing resource limits requires a suitably provisioned host; lowering a threshold never bypasses the other support, stability or domain-validation gates.