发明申请
- 专利标题： DISTANCE MEASURING DEVICE, IMAGE FORMING APPARATUS, AND DISTANCE MEASURING METHOD
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申请号： US15696960申请日： 2017-09-06
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公开(公告)号： US20170361605A1公开(公告)日： 2017-12-21
- 发明人: Masaya Kawarada , Nobuyuki Satoh , Kenji Morita , Yuichi Sakurada , Tomohiro Sasa , Daisaku Horikawa
- 申请人： Masaya Kawarada , Nobuyuki Satoh , Kenji Morita , Yuichi Sakurada , Tomohiro Sasa , Daisaku Horikawa
- 优先权： JP2015-107914 20150527
- 主分类号： B41J2/045
- IPC分类号： B41J2/045 ; G06K15/10 ; B41J29/393 ; B41J19/14 ; B41J2/21 ; B41J2/125 ; H04N1/04 ; G01B11/14
摘要：
A distance measuring device includes: an imaging unit that captures a test pattern image including a pair of first markers and a second marker that is formed under a condition different from a condition applied to the first markers; a position detecting unit that detects a position of each of the pair of first markers and the second marker in a captured image captured by the imaging unit; a ratio calculating unit that calculates a ratio of a distance between the pair of the first markers in the captured image and an actual distance between the pair of the first markers; and an actual distance calculating unit that calculates an actual distance between one of the first markers as the pair and the second marker by multiplying a distance between the one of the first markers as the pair and the second marker in the captured image by the ratio.