PROBLEM TO BE SOLVED: To easily perform camera adjustments by reducing data which should be given beforehand, as further as possible.SOLUTION: A field angle adjustment device for a camera in an elevator car includes: a distortion parameter estimation section (12) for estimating a distortion parameter from an image in the car as such a conversion coefficient as to linearize a portion that is imaged as a curve; a distortion correction section (13) which uses the distortion parameter to generate an image after distortion correction from the image in the car; a depression angle estimation section (15) which extracts a plurality of linear portions from the image after the distortion correction and estimates a depression angle of the camera on the basis of a position of a dissipation point that is calculated as an intersection of the plurality of linear portions, and a focal distance of the camera; a target depression angle comparison section (16) which makes a depression success/failure determination in accordance with whether a present depression angle of the camera is settled within a range of a target depression angle; and a display control section (18) by which, in the case where a result of the success/failure determination is a failure, a message specifying a direction in which the depression angle should be adjusted is displayed on a display section (2).SELECTED DRAWING: Figure 1
【課題】事前に与える必要のあるデータをできるだけ少なくし、簡便にカメラ調整を可能とする。【解決手段】曲線として写った部分を直線化するような変換係数として、かご内画像から歪みパラメータを推定する歪みパラメータ推定部(12)と、歪みパラメータを用いてかご内画像から歪み補正後の画像を生成する歪み補正部(13)と、歪み補正後の画像から複数の直線部分を抽出し、複数の直線部分の交点として算出された消失点の位置とカメラの焦点距離とに基づいてカメラの俯角を推定する俯角推定部(15)と、現状のカメラ俯角が目標俯角の範囲内であるか否かにより俯角合否判定を行う目標俯角比較部(16)と、合否判定結果が不合格の場合には、俯角を調整すべき方向を規定するメッセージを表示部(2)に表示させる表示制御部(18)とを備える。【選択図】図1
FIELD ANGLE ADJUSTMENT DEVICE FOR CAMERA IN ELEVATOR CAR AND FIELD ANGLE ADJUSTMENT METHOD FOR CAMERA IN ELEVATOR CAR
エレベータかご内カメラの画角調整装置およびエレベータかご内カメラの画角調整方法
2016-03-07
Patent
Elektronische Ressource
Japanisch
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