A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SURFACE CONDITION DETECTION METHOD AND WAVY ABRASION DETECTION METHOD
To provide a surface condition detection method which can detect predetermined surface conditions such as wavy abrasion differentiated from other factors based on image data taken by a camera capable of taking shaded images.SOLUTION: A surface condition detection method which detects predetermined damages on the surface of a to-be-detected object based on shaded image data acquired by using a camera capable of taking luminance images includes a first step of taking a moving average of the luminance values with a first number of pixels in a predetermined direction based on the shaded image data, a second step of taking a moving average of the luminance values in the same direction as the predetermined direction with a second number of pixels larger than the first number of pixels based on the shaded image data, a third step of calculating the difference between the moving average obtained in the first step and the moving average obtained in the second step, and a fourth step of calculating the standard deviation of the difference calculated in the third step.SELECTED DRAWING: Figure 3
【課題】濃淡画像を撮影可能なカメラにより撮影された画像データに基づいて、他の要因と区別して波状摩耗等の所定の表面状態を検出することができる表面状態検出方法を提供する。【解決手段】検出対象物の表面の所定の損傷を、輝度画像を撮影可能なカメラを用いて取得した濃淡画像データに基づいて検出する表面状態検出方法において、前記濃淡画像データに基づいて、所定の方向に第１のピクセル数で輝度値の移動平均をとる第１ステップと、前記濃淡画像データに基づいて、前記所定の方向と同一方向に前記第１のピクセル数よりも大きい第２のピクセル数で輝度値の移動平均をとる第２ステップと、前記第１ステップで得られた移動平均と前記第２ステップで得られた移動平均との差分を算出する第３ステップと、前記第３ステップで算出された前記差分の標準偏差を算出する第４ステップと、を含むようにした。【選択図】図３
SURFACE CONDITION DETECTION METHOD AND WAVY ABRASION DETECTION METHOD
To provide a surface condition detection method which can detect predetermined surface conditions such as wavy abrasion differentiated from other factors based on image data taken by a camera capable of taking shaded images.SOLUTION: A surface condition detection method which detects predetermined damages on the surface of a to-be-detected object based on shaded image data acquired by using a camera capable of taking luminance images includes a first step of taking a moving average of the luminance values with a first number of pixels in a predetermined direction based on the shaded image data, a second step of taking a moving average of the luminance values in the same direction as the predetermined direction with a second number of pixels larger than the first number of pixels based on the shaded image data, a third step of calculating the difference between the moving average obtained in the first step and the moving average obtained in the second step, and a fourth step of calculating the standard deviation of the difference calculated in the third step.SELECTED DRAWING: Figure 3
【課題】濃淡画像を撮影可能なカメラにより撮影された画像データに基づいて、他の要因と区別して波状摩耗等の所定の表面状態を検出することができる表面状態検出方法を提供する。【解決手段】検出対象物の表面の所定の損傷を、輝度画像を撮影可能なカメラを用いて取得した濃淡画像データに基づいて検出する表面状態検出方法において、前記濃淡画像データに基づいて、所定の方向に第１のピクセル数で輝度値の移動平均をとる第１ステップと、前記濃淡画像データに基づいて、前記所定の方向と同一方向に前記第１のピクセル数よりも大きい第２のピクセル数で輝度値の移動平均をとる第２ステップと、前記第１ステップで得られた移動平均と前記第２ステップで得られた移動平均との差分を算出する第３ステップと、前記第３ステップで算出された前記差分の標準偏差を算出する第４ステップと、を含むようにした。【選択図】図３
SURFACE CONDITION DETECTION METHOD AND WAVY ABRASION DETECTION METHOD
表面状態検出方法および波状摩耗検出方法
KAKIZAKI SHINSUKE (author) / KATO TAKAAKI (author) / IWASAKI KOTA (author) / HIROHATA SHOSUKE (author)
2022-02-10
Patent
Electronic Resource
Japanese
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