VIBRATION DETECTION SYSTEM, VIBRATION DETECTION METHOD, AND VIBRATION DETECTION PROGRAM

To make it easy to perform vibration detection of structures or objects.SOLUTION: A vibration detection system for detecting vibration of a structure or an object attached to the structure includes: an acquisition unit for acquiring an image of the structure or object captured by an imaging device;...

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Bibliographische Detailangaben
Hauptverfasser: KAWABE DAIGO, SUGIURA KUNIYUKI, KIM CHUL-WOO
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To make it easy to perform vibration detection of structures or objects.SOLUTION: A vibration detection system for detecting vibration of a structure or an object attached to the structure includes: an acquisition unit for acquiring an image of the structure or object captured by an imaging device; a spatial filter processing unit for generating a time series of each pixel from the image by means of spatial filter processing; a temporal filter processing unit that enlarges the amount of change in pixels of a specific vibration frequency in the time series of each pixel by means of temporal filter processing using parameters that characterize the structure or object; and a vibration detection unit that calculates an index to quantify the vibration of the structure or object from a sampling frame obtained by dividing frames of an enlarged image reconstructed based on the time series of each pixel whose amount of change in the pixels of the specific vibration frequency is enlarged, and detects the vibration of the structure or object from the time series of the index.SELECTED DRAWING: Figure 2 【課題】構造物または対象物の振動検知を簡易に行い得るようにする。【解決手段】構造物または構造物に取り付けられた対象物の振動を検知する振動検知システムは、撮像装置によって撮影された構造物または対象物の画像を取得する取得部と、空間フィルタ処理によって画像から各画素の時系列を生成する空間フィルタ処理部と、構造物または対象物を特徴付けるパラメータを用いた時間フィルタ処理によって各画素の時系列のうちの特定振動数の画素の変化量を拡大する時間フィルタ処理部と、特定振動数の画素の変化量が拡大された各画素の時系列を基に再構成した拡大画像をフレーム分割したサンプリングフレームから構造物または対象物の振動を定量化する指標を算出し、指標の時系列から構造物または対象物の振動を検知する振動検知部とを有する。【選択図】図2