REFERENCE LIGHT POINT IRRADIATION DEVICE FOR IMAGE

• Main Authors: HARADA TSUKUHIDE, SASAKI SHUJI
• Format: Patent
• Language: English; Japanese
• Published: 19.10.2017
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; GYROSCOPIC INSTRUMENTS; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; 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; RADIO DIRECTION-FINDING; RADIO NAVIGATION; SURVEYING; TESTING

PROBLEM TO BE SOLVED: To provide a reference light point irradiation device for image that, even in the case where a photographing surface is inclined in a yaw direction and/or a pitch direction, irradiates a subject with reference light points which assist dimension read-out of a subject from a captured image.SOLUTION: A reference light point irradiation device 10 for image comprises: a first range finding part 21 which irradiates a subject T with first laser beam r1, creates a first reference light point p1 on the subject T and measures a distance to the first reference light point p1; a second range finding part 22 which irradiates the subject T with second laser beam r2, creates a second reference light point p2 on the subject T and measures a distance to the second reference light point p2; and a third range finding part 23 which irradiates the subject T with third laser beam r3, creates a third reference light point p3 on the subject T and measures a distance to the third reference light point p3, in which the first to third reference light points p1 to p3 are in a positional relationship of forming triangular apexes on a virtual projection surface N orthogonal to the first laser beam r1.SELECTED DRAWING: Figure 1 【課題】撮影面がヨー方向および／またはピッチ方向に傾斜している場合においても、撮影した画像からの被写体の寸法読み取りを補助する基準光点を被写体に照射する画像用基準光点照射装置を提供する。【解決手段】画像用基準光点照射装置１０は、被写体Ｔに第１のレーザ光ｒ１を照射し、該被写体Ｔ上に第１の基準光点ｐ１を生成するとともに該第１の基準光点ｐ１までの距離を測定する第１の測距部２１と、被写体Ｔに第２のレーザ光ｒ２を照射し、該被写体Ｔ上に第２の基準光点ｐ２を生成するとともに該第２の基準光点ｐ２までの距離を測定する第２の測距部２２と、被写体Ｔに第３のレーザ光ｒ３を照射し、該被写体Ｔ上に第３の基準光点ｐ３を生成するとともに該第３の基準光点ｐ３までの距離を測定する第３の測距部２３と、を備え、第１〜第３の基準光点ｐ１〜ｐ３は、第１のレーザ光ｒ１に直交する仮想投射面Ｎ上で三角形の頂点をなす位置関係にある。【選択図】図１