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Three-dimensional shape measuring device, three-dimensional shape measuring method

A three-dimensional shape, measuring device technology, applied in measuring devices, using optical devices, instruments, etc., can solve problems such as data loss

Active Publication Date: 2021-08-20
DAINIPPON SCREEN MTG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There will be cases of data loss within these ranges

Method used

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  • Three-dimensional shape measuring device, three-dimensional shape measuring method
  • Three-dimensional shape measuring device, three-dimensional shape measuring method
  • Three-dimensional shape measuring device, three-dimensional shape measuring method

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Embodiment Construction

[0019] figure 1 An example of the three-dimensional shape measuring device of the present invention is schematically shown. figure 2 yes means figure 1 A block diagram of an example of an electrical configuration included in the three-dimensional shape measuring device shown. Such as figure 2 As shown, the three-dimensional shape measuring device 1 includes a controller 10 including a control unit 11 , a storage unit 12 , and a communication unit 13 . The control unit 11 is a computer composed of a CPU (Central Processing Unit) and a RAM (Random Access Memory), and is in charge of controlling the entire device. The storage unit 12 is constituted by a HDD (Hard Disk Drive), and stores various data including reference data Dr and measurement data Dm used in three-dimensional shape measurement described later. In addition, the communication unit 13 is in charge of a communication function with an external device.

[0020] Such as figure 1 As shown, a three-dimensional sha...

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Abstract

The present invention provides a three-dimensional shape measuring device and a three-dimensional shape measuring method capable of coping with the occurrence of data loss points in the three-dimensional shape measurement of an object. While overlapping the imaging range (F) of the imaging unit (4) with the object (J), it is executed to obtain the data representing the imaging range (F) based on the result obtained by causing the imaging unit (4) to capture the imaging range (F). Measurement processing of three-dimensional shape data. Execute search processing to search for missing areas (R1 to R4) in the object (J) that have data loss points that cannot be acquired by measurement processing, and store the missing areas (R1 to R4) found by search processing in the shooting range In (F), measurement processing is executed again. Therefore, even if a data loss point occurs in one measurement process, the measurement process can be performed again for the loss range (R1 to R4) found by the search process, and the data of the data loss point can be interpolated.

Description

technical field [0001] The present invention relates to a technique for measuring the three-dimensional shape of an object. Background technique [0002] Japanese Patent Application Laid-Open No. 2018-4280 describes a technique in which a pattern is projected onto an object from a projector and the object is photographed by a camera to obtain point group data representing a three-dimensional shape of the object. [0003] However, in the measurement of such a three-dimensional shape, for example, the data of the object cannot be acquired with respect to a range that becomes a blind spot of a camera or a range that becomes a shadow of the object. therefore. There will be instances of data loss within these ranges. Contents of the invention [0004] This invention was made in view of the above-mentioned problems, and an object thereof is to provide a technique capable of coping with the occurrence of data loss points in the measurement of the three-dimensional shape of an o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/24
CPCG01B11/24
Inventor 小池泰弘
Owner DAINIPPON SCREEN MTG CO LTD