← Back to directory

Takes matched object and image points from multiple views of a planar calibratio...

https://medien.halowerk.com/v1/oss-opencv-planar-camera-calibrate

Overview

Takes matched object and image points from multiple views of a planar calibration target and returns the camera matrix, five distortion coefficients and the RMS reprojection error that the fit actually achieved. The error figure is the point: it tells a caller whether the calibration is usable before anything is built on top of it, instead of handing back numbers that look plausible.

Protocol x402 (POST)
Price $0.0030
Payment Asset USD Coin
Payment Network eip155:8453
Category media/images
Provider HALOWERK Medien
Source bazaar
Indexed 2026-10-25 17:35:27

Health

Status down
Latency (p50) —
Uptime (30d) 0.0%
Reliability Score 7/100
Last Checked 2026-10-31 07:18:39
Last Healthy Never
Consecutive Failures 80

x402 Payment Validation

Payment Requirements —
Asset Verified —
Facilitator —

Input Schema

{ "body": { "image_points": [ [ [ 253.33333333333331, 184.88888888888889 ], [ 276.13938193432256, 185.2860233504561 ], [ 299.2136216355833, 185.68782797343826 ], [ 322.5608111669504, 186.09438562425575 ], [ 346.18582251205737, 186.50578114148055 ], [ 370.0936442976854, 186.92210139485704 ], [ 253.36245284629865, 208.97160510369656 ], [ 276.06356310474797, 209.50703487060724 ], [ 299.03039288182714, 210.0487319142416 ], [ 322.2676350665074, 210.59680692136425 ], [ 345.7800937107183, 211.15137320063604 ], [ 369.5726873404249, 211.71254676070953 ], [ 253.39130671904118, 232.83462883575845 ], [ 275.988439931764, 233.50581259488294 ], [ 298.84885509114474, 234.18481639759457 ], [ 321.9771804543365, 234.8717777131468 ], [ 345.3781533986382, 235.56683725189765 ], [ 369.0566236564609, 236.27013906139513 ], [ 253.4198985699764, 256.48095262381844 ], [ 275.91400288486005, 257.28540113116827 ], [ 298.6689849629685, 258.0991793154989 ], [ 321.6894096110561, 258.922450426341 ], [ 344.97994875992123, 259.7553815442643 ], [ 368.5453846253527, 260.5981436939202 ], [ 253.44823195209904, 279.91351490183797 ], [ 275.8402426068251, 280.8487897252426 ], [ 298.490759622866, 281.7948619037913 ], [ 321.40428551112484, 282.7519194994296 ], [ 344.5854279558831, 283.7201549670098 ], [ 368.03890290374767, 284.69976528331074 ] ], [ [ 276.3636363636363, 206.1818181818182 ], [ 295.1854480132492, 204.10820522117373 ], [ 314.1275998277712, 202.02133429523414 ], [ 333.19124962875316, 199.92107784593978 ], [ 352.37757013843833, 197.80730667361055 ], [ 371.6877492202431, 195.67988991045218 ], [ 277.58804217518997, 225.36628885885884 ], [ 296.53329556381897, 223.3410310135733 ], [ 315.6004499863493, 221.30274188175957 ], [ 334.79068577722336, 219.25129528502657 ], [ 354.1051985587012, 217.18656341070738 ], [ 373.54519948917624, 215.10841678531398 ], [ 278.82804653914104, 244.7951637752862 ], [ 297.89836969412823, 242.81966784520336 ], [ 317.0921853082779, 240.83137932379995 ], [ 336.4106968162974, 238.83017354720192 ], [ 355.85512334048946, 236.81592422645602 ], [ 375.4266999472121, 234.78850342096356 ], [ 280.0839494475122, 264.47314332381984 ], [ 299.281002782602, 262.54885851976036 ], [ 318.6031713609498, 260.6120323450459 ], [ 338.05168232417935, 258.66254179277877 ], [ 357.6277789144413, 256.70026224216747 ], [ 377.33272073933733, 254.72506743197152 ], [ 281.35605863457175, 284.4050492057197 ], [ 300.68153581378783, 282.53346864418523 ], [ 320.13378320827195, 280.6496109901642 ], [ 339.71405229326007, 278.75335504423145 ], [ 359.4236110711203, 276.8445780063875 ], [ 379.26374434508114, 274.9231554495499 ] ], [ [ 248, 196.6 ], [ 268.92758398854727, 198.95672901316553 ], [ 289.63851774869147, 201.28906028031003 ], [ 310.13614822312275, 203.59737071244945 ], [ 330.4237537669539, 205.88202949671097 ], [ 350.5045458956884, 208.14339829317757 ], [ 245.83287868990308, 217.3630715996041 ], [ 266.56085511749944, 219.5891203581933 ], [ 287.07639781144024, 221.79235512667893 ], [ 307.38275586017517, 223.97312483585674 ], [ 327.48311243023693, 226.13177133694094 ], [ 347.38058642969537, 228.26862958020803 ], [ 243.70919546894103, 237.70996522585054 ], [ 264.2413233892375, 239.81006198786233 ], [ 284.565112269152, 241.88884911524661 ], [ 304.6837171191127, 243.94664931333676 ], [ 324.6002295650686, 245.98377880428313 ], [ 344.3176794322862, 248.00054748904964 ], [ 241.62765727735473, 257.6530696140786 ], [ 261.96759093861056, 259.63174004702057 ], [ 282.1031630936383, 261.590530175693 ], [ 302.03743827072344, 263.5297381176618 ], [ 321.77342003021784, 265.449656059527 ], [ 341.3140524732103, 267.35057040368645 ], [ 239.58702187333213, 277.20428661563807 ], [ 259.73831456265776, 279.0658641528881 ], [ 279.68911054426286, 280.9089197931492 ], [ 299.4423872900633, 282.73372859544224 ], [ 319.0010636065373, 284.5405601992718 ], [ 338.36800107250707, 286.32967895744815 ] ], [ [ 267.5, 162.5 ], [ 292.6496021572847, 159.66617141144405 ], [ 317.1652775372798, 156.90377297169522 ], [ 341.0706961844347, 154.2101375670459 ], [ 364.38836421602406, 151.5827292337799 ], [ 387.13969449558465, 149.01913519476952 ], [ 271.9684876788127, 188.8534192896406 ], [ 297.16484739263797, 185.6701028202589 ], [ 321.7235079324782, 182.56735347668877 ], [ 345.6683762295898, 179.54215084928111 ], [ 369.02217895699914, 176.59162364260442 ], [ 391.80653447653754, 173.7130405856322 ], [ 276.47457991058167, 215.42861574920684 ], [ 301.71760163370493, 211.8900538605558 ], [ 326.3191232744619, 208.44141732901642 ], [ 350.3032916426114, 205.07932125948048 ], [ 373.69305667971724, 201.80054853359127 ], [ 396.5102447069135, 198.602039541886 ], [ 281.01875339273874, 242.22840075655242 ], [ 306.30833422166523, 238.3287275341 ], [ 330.95258538366414, 234.5285646530327 ], [ 354.97589660140017, 230.82415119896356 ], [ 378.4014438349837, 227.21191342064458 ], [ 401.25126385825746, 223.6884532302449 ], [ 285.6014929141026, 269.255633409412 ], [ 310.9375223608329, 264.98887212755227 ], [ 335.6243637185284, 260.83143857633655 ], [ 359.68665270044966, 256.779183932536 ], [ 383.1477940729474, 252.82816667283166 ], [ 406.0300375887383, 248.9746397861292 ] ], [ [ 260, 209 ], [ 276.35700137064373, 212.29757168427005 ], [ 292.94399781069046, 215.64151037745572 ], [ 309.7658745916083, 219.03280095034702 ], [ 326.8276563273234, 222.4724563651754 ], [ 344.13451197797696, 225.96151868437104 ], [ 257.88083738547584, 226.56512845631053 ], [ 274.12193090772973, 229.96416764538907 ], [ 290.5899669018245, 233.41070279614019 ], [ 307.2897355548637, 236.9057364293403 ], [ 324.22616282098585, 240.45029947995315 ], [ 341.4043152657022, 244.04545231098328 ], [ 255.78755856548707, 243.91571359591967 ], [ 271.9143482012849, 247.4134930123693 ], [ 288.2650877879938, 250.95984548931645 ], [ 304.8444748742501, 254.55578988974014 ], [ 321.65733931409073, 258.2023737726657 ], [ 338.7086479579228, 261.9006744106013 ], [ 253.71969219530175, 261.05566225953186 ], [ 269.7337492678933, 264.64953140520345 ], [ 285.96882228754373, 268.29300087321906 ], [ 302.4295185323407, 271.9871046273325 ], [ 319.1205742336142, 275.73290557093964 ], [ 336.04685911932324, 279.53149656670365 ], [ 251.67677830541066, 277.98878700190807 ], [ 267.57964236989983, 281.67616965010876 ], [ 283.7006453852135, 285.41413197873084 ], [ 300.04430665178927, 289.2037218738625 ], [ 316.6152711765022, 293.04601636902953 ], [ 333.4183140739991, 296.94212266572833 ] ], [ [ 256.8421052631579, 181.26315789473685 ], [ 277.8664899134631, 181.39282072603586 ], [ 299.28126081377746, 181.52489117055725 ], [ 321.09739304856424, 181.65943691449246 ], [ 343.3262769899092, 181.79652820521952 ], [ 365.9797381277619, 181.93623797360092 ], [ 254.26670861614286, 203.0166415973038 ], [ 275.45626032134305, 203.34937437705776 ], [ 297.04283657942403, 203.68834150687954 ], [ 319.0377013749154, 204.03371986152965 ], [ 341.45254885443217, 204.38569307046686 ], [ 364.2995240590226, 204.74445184340152 ], [ 251.6450046916948, 225.16126683766734 ], [ 273.00228737629004, 225.70441839542397 ], [ 294.7634030143138, 226.25784010322582 ], [ 316.9399147041785, 226.82182603008 ], [ 339.54383125230584, 227.39668158009673 ], [ 362.5876288572568, 227.98272404395314 ], [ 248.97573320781686, 247.70767878146063 ], [ 270.5033693231693, 248.4689004523346 ], [ 292.44182272471573, 249.24464870751842 ], [ 314.8029662931991, 250.03534337453368 ], [ 337.5991348714303, 250.8414206159764 ], [ 360.8431479530979, 251.66333373179805 ], [ 246.2575877313333, 270.66691241734503 ], [ 267.9582599791219, 271.65417294379836 ], [ 290.07691586359994, 272.66044941319086 ], [ 312.6257491953756, 273.68629657644203 ], [ 335.61743274834953, 274.73229097465105 ], [ 359.0651420095602, 275.7990320195837 ] ] ], "image_size": [ 640, 480 ], "object_points": [ [ 0, 0, 0 ], [ 0.035, 0, 0 ], [ 0.07, 0, 0 ], [ 0.10500000000000001, 0, 0 ], [ 0.14, 0, 0 ], [ 0.17500000000000002, 0, 0 ], [ 0, 0.035, 0 ], [ 0.035, 0.035, 0 ], [ 0.07, 0.035, 0 ], [ 0.10500000000000001, 0.035, 0 ], [ 0.14, 0.035, 0 ], [ 0.17500000000000002, 0.035, 0 ], [ 0, 0.07, 0 ], [ 0.035, 0.07, 0 ], [ 0.07, 0.07, 0 ], [ 0.10500000000000001, 0.07, 0 ], [ 0.14, 0.07, 0 ], [ 0.17500000000000002, 0.07, 0 ], [ 0, 0.10500000000000001, 0 ], [ 0.035, 0.10500000000000001, 0 ], [ 0.07, 0.10500000000000001, 0 ], [ 0.10500000000000001, 0.10500000000000001, 0 ], [ 0.14, 0.10500000000000001, 0 ], [ 0.17500000000000002, 0.10500000000000001, 0 ], [ 0, 0.14, 0 ], [ 0.035, 0.14, 0 ], [ 0.07, 0.14, 0 ], [ 0.10500000000000001, 0.14, 0 ], [ 0.14, 0.14, 0 ], [ 0.17500000000000002, 0.14, 0 ] ] }, "bodyType": "json", "method": "POST", "type": "http" }

Output Schema

{ "example": { "operation": "planar-camera-calibrate", "result": { "camera_matrix": [ [ 599.999210626856, 0, 320.0004792809099 ], [ 0, 619.9992085928471, 240.00027919302644 ], [ 0, 0, 1 ] ], "distortion": [ -0.0000015049622705782782, 0.00013504706884370608, 2.3405641426703474e-7, 3.4086208135676353e-7, 0 ], "rms_pixels": 0.00000968194895063177, "view_count": 6, "warnings": [ "Planar target calibration; k3 is fixed to zero. Residuals do not prove physical lens-model validity." ] }, "runtime_ms": 491.073, "upstream": { "binary_sha256": "1fd4eb220f9986baa0ea0492cbcbedf85b868e792cbcac5f69e10d067a2f956c", "components": [ "calibrateCamera" ], "numpy_version": "2.5.0", "package_version": "4.13.0.92", "project": "OpenCV", "version": "4.13.0" } }, "type": "json" }