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nx_lensdist.nx

buildroot/runtime/nx_lensdist.nx

8827 B196 linesdepth 4pulls 6 transitivereach 1 importersview sourcekind library

about

nx_lensdist.nx -- Models and corrects radial lens distortion in images using fixed-point arithmetic.

imports: nx_planesweep.nxnx_vecmath.nx

imported by: nx_distcal.nx

none

20	const LD_Q: i64 = 16384 // Q14, matching R3_Q so the two mix without rescaling
21	const LD_ITERS: i64 = 12 // fixed-point iterations for the inverse
22	const LD_SUB: i64 = 256 // sub-pixel resolution carried THROUGH the inverse iteration

25	func ld_factor(rn: i64, k1: i64, k2: i64) -> i64 called by 3: ld_distort ld_undistort ld_distort_fx
31	func ld_isqrt(v: i64) -> i64 { return vm_isqrt(v) } called by 3: ld_distort ld_undistort ld_distort_fx calls 1: vm_isqrt
33	func ld_distort(u: i64, v: i64, k1: i64, k2: i64, rref: i64, out2: *i64) -> i64 called by 2: dc_resid ld_correct calls 2: ld_isqrt ld_factor
50	func ld_undistort(ud: i64, vd: i64, k1: i64, k2: i64, rref: i64, out2: *i64) -> i64 called by 1: ld_render calls 3: ld_isqrt ld_factor ld_round
71	func ld_round(fx: i64) -> i64 called by 1: ld_undistort
77	func ld_render(cx: i64, cy: i64, cz: i64, basis: i64, f: i64, zp: i64, w: i64, h: i64, k1: i64, k2: i64, rref: i64, img: i64) -> i64 calls 3: ld_undistort r3_ray ps_tex
108	func ld_distort_fx(u: i64, v: i64, k1: i64, k2: i64, rref: i64, out2: *i64) -> i64 called by 1: ld_correct_bl calls 2: ld_isqrt ld_factor
119	func ld_floordiv(a: i64, b: i64) -> i64 called by 1: ld_bilinear
127	func ld_bilinear(src: *i64, w: i64, h: i64, xfx: i64, yfx: i64) -> i64 called by 1: ld_correct_bl calls 2: ld_floordiv ps_at
146	func ld_correct_bl(src: i64, dst: i64, w: i64, h: i64, k1: i64, k2: i64, rref: i64) -> i64 calls 2: ld_distort_fx ld_bilinear
173	func ld_correct(src: i64, dst: i64, w: i64, h: i64, k1: i64, k2: i64, rref: i64) -> i64 calls 2: ld_distort ps_at