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simpleicp's Introduction

ICP

simple ICP using PCL to understand the algorithm

opencvとPCLをインストール・ビルド等を実行の上, CMAKEを実行 ICPalgorithm/build内のReleaseフォルダまたはDeugフォルダ内にできるexeファイルを実行すれば,結果が見れる

コード内容についての注釈

  1. 簡単化するため,適当な点群を発生させる(直方体) これを"original cloud"とする
  2. 点群を複製し,適当に平行移動回転させる これを"current cloud" とする. 
    • この点群を,original点群に向けて移動を最適化によって推定し,移動・回転させて,オリジナルの点群にfusionしていく
  3. 今回用いたのは point-to-planeである
    • 最近傍の点を用いて,各点の法線を求めた
  4. 最適化については,回転角が小さいと仮定の上(ここでは10度回転. 30度くらいまではOK), 近似・線形変換を行う.
  5. 出力結果は 白点群: original cloud 青点群: current cloud 赤点群: transformed cloud

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