IMAGE MEASURING METHOD AND RECORDING MEDIUM WITH RECORDED IMAGE MEASURING PROGRAM

• Main Authors: AKIYAMA HIROAKI, AZEDAKA SHINICHI, NAKAMURA MINORU, YAMADA ATSUHITO, HATTORI SUSUMU, NISHIMURA TAKESHI, JO MAYUMI, YAMAMOTO HIROYUKI, YAMAMOTO TAKUJI, MIURA SATORU, ONISHI YUZO, AKIMOTO KEIICHI
• Format: Patent
• Language: English
• Published: 19.07.2002
• Edition: 7
• 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

PROBLEM TO BE SOLVED: To provide an image measuring method by a bundle adjusting method increasing the productivity of a measurement and to provide an image measuring program. SOLUTION: A first image and a second image in which a reference target group and three or more discrimination targets are photographed in common by a movable imaging device from different positions and postures and in which noncommon discrimination targets are contained are photographed. The three-dimensional coordinates of the photographed positions and postures in both images and the three or more discrimination targets are calculated. The imaging device is moved. An n-th image (where n represents 3 or more), three or more coordinates-calculated discrimination targets inside an (n-1)th image and coordinates- calculated discrimination targets are photographed in common, and they are photographed in a position and a posture in which a discrimination target not common with the (n-1)th image is contained. A cycle in which the three-dimensional coordinates of the photographing position and the posture of the n-th image and the coordinates-uncalculated discrimination target are calculated is repeated. The three-dimensional coordinates of all the discrimination targets are calculated. By a handle adjusting operation based on the calculated value of the three-dimensional coordinates of all the discrimination targets, the measurement accuracy of the three-dimensional coordinates is increased.