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nx_silhouette_integrity.nx

buildroot/runtime/nx_silhouette_integrity.nx

12680 B342 linesdepth 4pulls 4 transitivereach 4 importersview sourcekind tool

docs dependencies structs consts functions

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nx_silhouette_integrity.nx -- Tier 6 melty-edge detector. CAPABILITY_COMPLETENESS: FULL User feedback 2026-05-16 (image #5): "its a weird melty body and environment". AI image-gen fails this commonly: the body silhouette wavers / fuses into the background, limb-to-torso joints have no clear contour transition, fabric-to-skin boundaries blur instead of meeting at a sharp edge. Substrate's detector: - Given a segmented blob (from nx_segmenter_classical) and the source RGB image - For each pixel on the blob's PERIMETER (in-blob pixel with at least one out-of-blob neighbor): compute local Sobel gradient magnitude on luminance - Strong gradient = sharp edge; weak = melty - Score = fraction of perimeter pixels above NX_SILH_STRONG_Q10 - Sealed verdict SHARP / SOFT / MELTED / NO_PERIMETER Composes: nx_segmenter_classical (provides label_map + blob bbox) inline BT.601 luminance + Sobel 3x3 gradient genealogy_id: substrate_silhouette_integrity_2026_05_16 lineage_id: tier_6_melty_detector_v1

dependencies 4 imports · 1 importers

imports: nx_syscalls.nxnx_runtime.nxnx_tier.nxnx_segmenter_classical.nx

imported by: nx_image_grade_v2.nx

call flow from main pre-order; caps 40 nodes / depth 6 declared; ↻ = already shown

structs

66	struct NxSilhouetteResult

consts

38	const NX_MAGIC_1024: i64 = 1024
40	const NX_SILH_Q10: nx_int = 1024
43	const NX_SILH_VERDICT_SHARP: nx_int = 0 // most perimeter pixels strong
44	const NX_SILH_VERDICT_SOFT: nx_int = 1 // moderate
45	const NX_SILH_VERDICT_MELTED: nx_int = 2 // most weak; AI tell
46	const NX_SILH_VERDICT_NO_PERIMETER: nx_int = 3 // blob too small / no border
54	const NX_SILH_STRONG_RAW: nx_int = 60 // strong edge raw threshold
55	const NX_SILH_WEAK_RAW: nx_int = 20
58	const NX_SILH_THR_SHARP_Q10: nx_int = 700 // >= 0.68 strong
59	const NX_SILH_THR_SOFT_Q10: nx_int = 400 // >= 0.39 strong
62	const NX_SILH_MAX_DIM: nx_int = 8192
77	const NX_SILH_RESULT_BYTES: nx_size = 64

functions

81	func _silh_luma_u8(pixels: *u8, off: nx_int, bpp: nx_int, n_ch: nx_int) -> nx_int called by 1: _silh_sobel_at
95	func _silh_sobel_at(pixels: *u8, x: nx_int, y: nx_int, called by 1: nx_silhouette_integrity calls 1: _silh_luma_u8
136	func nx_silhouette_integrity( called by 2: nx_image_grade_v2 main calls 2: sys_mmap _silh_sobel_at
243	func _silh_fill_rgb_rect(pixels: *u8, w: nx_int, bpp: nx_int, called by 1: main
261	func main() -> nx_int calls 5: sys_mmap _silh_fill_rgb_rect nx_segmenter_connected nx_segmenter_largest_blob nx_silhouette_integrity