METHOD FOR MEASURING ROOF SLOPE OF BUILDING

• Main Authors: YUASA TAKAYUKI, IMANAKA MASAYUKI, OSAWA JUNJI
• Format: Patent
• Language: English; Japanese
• Published: 17.10.2019
• Subjects: GYROSCOPIC INSTRUMENTS; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING DISTANCES, LEVELS OR BEARINGS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; TESTING

To provide a method for measuring the roof slope of a building capable of accurately measuring the roof slope of a building with simpler work without imaging a wide range of the building.SOLUTION: An imaging device 3 is moved so that an inclined contour line 21b of a roof 21 of a building 10 enters an imaging area R1 of the imaging device 3 in a state of holding the posture of the imaging device 3 so as to make an imaging direction L orthogonal to a wall surface 11 of the building 10 and eaves 21c which are the lower end part of the contour line 21b position at the center C of the imaging area R1, and the roof 21 is imaged with the imaging device 3. Next, a horizontal line V along the wall surface 11 of the building 10 is identified from an image 30 of the imaged roof 21, an angle formed between the inclined contour line 21b of the roof 21 and the horizontal line V is measured as a roof slope θ.SELECTED DRAWING: Figure 4 【課題】建物の広い範囲を撮像することなく、より簡単な作業で、建物の屋根勾配を正確に測定することができる建物の屋根勾配の測定方法を提供する。【解決手段】建物１０の壁面１１に対して撮像方向Ｌが直交するように撮像装置３の姿勢を保持した状態で、撮像装置３の撮像領域Ｒ１に、建物１０の屋根２１の傾斜した輪郭線２１ｂが入り、かつ、撮像領域Ｒ１の中央Ｃに、輪郭線２１ｂの下端部である軒先２１ｃが位置するように、撮像装置３を移動させ、撮像装置３で屋根２１を撮像する。次に、撮像した屋根２１の画像３０から、建物１０の壁面１１に沿った水平線Ｖを特定し、屋根２１の傾斜した輪郭線２１ｂと、水平線Ｖとのなす角度を、屋根勾配θとして測定する。【選択図】図４