calibration_id stringclasses 3
values | status stringclasses 1
value | shared_usable_photo_pairs int64 20 25 | coverage dict | automatic_board_fit_status stringclasses 1
value | automatic_board_fit_reasons listlengths 4 4 | full_fit dict | cross_validation dict | limitations listlengths 3 3 |
|---|---|---|---|---|---|---|---|---|
1A4399AA-5202-4B3E-9C9C-9A12DA652DAB | provisional | 25 | {
"A": {
"corner_span_fraction_x": 0.4327805995941162,
"corner_span_fraction_y": 0.2793454064263238,
"largest_view_min_dimension_fraction": 0.14455571174621581
},
"B": {
"corner_span_fraction_x": 0.42597594261169436,
"corner_span_fraction_y": 0.27179639604356554,
"largest_view_min_dimensio... | retake_recommended | [
"Camera A: board corners cover only 43% of image width and 28% of height; add edge and corner poses",
"Camera A: board is too small in every photo; move it closer while keeping it fully visible",
"Camera B: board corners cover only 43% of image width and 27% of height; add edge and corner poses",
"Camera B: b... | {
"stereo_rms_px": 1.3994202625756587,
"baseline_m": 0.19954809168894327
} | {
"train_pairs": 20,
"holdout_pairs": 5,
"holdout_frame_ids": [
0,
5,
10,
15,
20
],
"holdout_corners": 104,
"holdout_epipolar_median_px": 0.9579781321302816,
"holdout_epipolar_mean_px": 1.095898788033489,
"holdout_epipolar_p90_px": 1.9946414975916107,
"holdout_triangulated_square_m... | [
"The calibration board does not cover the full image; edge accuracy is unverified.",
"Lens distortion is assumed zero because this photo set cannot fit it reliably.",
"Metric scale assumes the same printed board with 34.5 mm squares."
] |
2D03D080-F8A5-4BBE-B367-F37F70AB03EF | provisional | 20 | {
"A": {
"corner_span_fraction_x": 0.5468444267908732,
"corner_span_fraction_y": 0.30634210374620224,
"largest_view_min_dimension_fraction": 0.13942153453826905
},
"B": {
"corner_span_fraction_x": 0.5373919010162354,
"corner_span_fraction_y": 0.2938063091701931,
"largest_view_min_dimension... | retake_recommended | [
"Camera A: board corners cover only 55% of image width and 31% of height; add edge and corner poses",
"Camera A: board is too small in every photo; move it closer while keeping it fully visible",
"Camera B: board corners cover only 54% of image width and 29% of height; add edge and corner poses",
"Camera B: b... | {
"stereo_rms_px": 1.1735452521337837,
"baseline_m": 0.19285379293435254
} | {
"train_pairs": 16,
"holdout_pairs": 4,
"holdout_frame_ids": [
2,
7,
13,
18
],
"holdout_corners": 55,
"holdout_epipolar_median_px": 0.4381253782436144,
"holdout_epipolar_mean_px": 0.6208393176188868,
"holdout_epipolar_p90_px": 1.3157766577216725,
"holdout_triangulated_square_mean_m": ... | [
"The calibration board does not cover the full image; edge accuracy is unverified.",
"Lens distortion is assumed zero because this photo set cannot fit it reliably.",
"Metric scale assumes the same printed board with 34.5 mm squares."
] |
96CE230E-2F53-416F-BEF0-9CF2C5526ED2 | provisional | 23 | {
"A": {
"corner_span_fraction_x": 0.502520497639974,
"corner_span_fraction_y": 0.29654952155219183,
"largest_view_min_dimension_fraction": 0.13556238810221355
},
"B": {
"corner_span_fraction_x": 0.4906407356262207,
"corner_span_fraction_y": 0.2808251910739475,
"largest_view_min_dimension_... | retake_recommended | [
"Camera A: board corners cover only 50% of image width and 30% of height; add edge and corner poses",
"Camera A: board is too small in every photo; move it closer while keeping it fully visible",
"Camera B: board corners cover only 49% of image width and 28% of height; add edge and corner poses",
"Camera B: b... | {
"stereo_rms_px": 1.1522345639010594,
"baseline_m": 0.19307955379622538
} | {
"train_pairs": 18,
"holdout_pairs": 5,
"holdout_frame_ids": [
0,
6,
11,
16,
21
],
"holdout_corners": 115,
"holdout_epipolar_median_px": 1.6080722338730642,
"holdout_epipolar_mean_px": 1.5290869708747101,
"holdout_epipolar_p90_px": 2.6593499941735215,
"holdout_triangulated_square_... | [
"The calibration board does not cover the full image; edge accuracy is unverified.",
"Lens distortion is assumed zero because this photo set cannot fit it reliably.",
"Metric scale assumes the same printed board with 34.5 mm squares."
] |
iPhone stereo captures
Complete paired iPhone camera exports and offline stereo calibration results. The capture and processing code is in JizhuoChen/stereo_iphone.
Each captures/ subfolder is one fixed two-phone mount. Its data/ directory
contains a 25-photo ChArUco calibration pair and three subsequent recording
pairs. Camera A is the iPhone 17 Pro; Camera B is the iPhone 17 Pro Max. The
complete phone exports include RGB frames, LiDAR depth and confidence maps,
ARKit poses, Bluetooth timing records, audio, and location logs.
| Folder | Calibration ID | Usable photo pairs | Estimated baseline | Status |
|---|---|---|---|---|
2026-10-02_calib_2D03D080 |
2D03D080-F8A5-4BBE-B367-F37F70AB03EF |
20 | 19.29 cm | Provisional |
2026-10-02_calib_96CE230E |
96CE230E-2F53-416F-BEF0-9CF2C5526ED2 |
23 | 19.31 cm | Provisional |
2026-10-02_calib_1A4399AA |
1A4399AA-5202-4B3E-9C9C-9A12DA652DAB |
25 | 19.95 cm | Provisional |
Each batch's calibration/outputs/photo_set_.../ directory contains:
calibration.json: board-only fit and automated quality assessment.extrinsics_fixed_arkit_intrinsics.json: recommended provisional calibration forprocessing rgb-reconstruct.stereo_extrinsics.yamlandintrinsics_{A,B}.yaml: the same provisional geometry for other processing commands.validation_fixed_arkit.json: held-out photo-pair checks.README.md: batch-specific results and limits.
Each calibration/outputs/recording_.../ directory contains Bluetooth clock
mapping and a paired-frame table. The cameras were linked by Bluetooth but
their exposures were not hardware synchronized. The printed ChArUco board is
treated as having 34.5 mm squares. Its image coverage was limited, so the
calibrations assume zero lens distortion and have unverified image-edge
accuracy. Review the per-batch validation reports before using metric depth.
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