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NIC(Network Interface Card) A hardware part that lets a computer or device connect to a network. It translates data into signals for wired cables or wireless radio waves. Every card has a unique MAC address to identify it. Most modern computers have this built into the motherboard. https://wonisdaily.tistory.com/298

LetterMeaningWhat it meansUUntrackedNew file Git does not know yet. It is not in the last commit, so it only appears after you git add it.MModifiedFile already in Git, and the working copy (or index) differs from HEAD.DDeletedFile existed in Git and was removed (or is staged for deletion).Quick way to think about it:U — brand new (Git has no history for this path)M — existing file, contents chan..

Series: Calibration Pipeline — Part 7 of 7Final Bundle AdjustmentThis post explains the last optimization stage: a Ceres-based bundle adjustment over the merged rig. Earlier stages already refined pieces locally (intrinsics, objects, camera groups). Here the goal is to polish cameras + objects + boards together — and optionally intrinsics again — before saving results. // from apps/calibrate/sr..

Series: Calibration Pipeline — Part 6 of 76. Merge Everything into One RigThis post explains how Calibration uses the hand-eye links from Part 5 to merge camera groups into one (or fewer) rigs, and how it also merges 3D objects that become co-visible once groups share a frame. In calibrate.cpp this is a two-pass loop: merge groups → merge objects → merge groups again → refresh poses. // from ap..

Series: Calibration Pipeline — Part 5 of 7Connect Groups that Don’t Overlap (Hand-Eye Style)This post explains how Calibration estimates the relative pose between camera groups that never see the same boards at once. Part 4 only glues cameras with shared object views. When two clusters have no FOV overlap, Calibration falls back to a hand-eye style link using synchronized frames and different ob..