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Method and device for joint calibration of multiple tracking scanners

A tracking and scanner technology, applied in the field of visual measurement, can solve the problems of high cost and poor versatility, and achieve the effects of strong versatility, improved scanning range and scanning efficiency, and easy calibration operation

Inactive Publication Date: 2022-02-11
TENYOUN 3D(TIANJIN)TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method needs to make different global frames according to the workpiece to be tested, which is costly and not universal

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  • Method and device for joint calibration of multiple tracking scanners
  • Method and device for joint calibration of multiple tracking scanners
  • Method and device for joint calibration of multiple tracking scanners

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Embodiment Construction

[0056] In order to understand the above-mentioned purpose, features and advantages of the present application more clearly, the solutions of the present application will be further described in detail below with reference to the drawings and embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0057] In the following description, a lot of specific details have been set forth in order to fully understand the present application, but the present application can also be implemented in other ways different from those described here; obviously, the embodiments in the description are only a part of the present application, and Not all examples. All other embodiments obtained by persons of ordinary skill in the art based on the described embodiments of the present application belong to the protection scope of the present application.

[0058] figure 1 For t...

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Abstract

The invention relates to a method and a device for joint calibration of multiple tracking scanners. The method comprises the following steps: acquiring different pose calibration straight rod images of each tracking scanner in a respective shooting coordinate system; determining an initial rotation translation matrix between the tracking scanners according to different pose calibration straight rod images of the tracking scanners under respective shooting coordinate systems; and optimizing the initial rotation translation matrix to obtain a target rotation translation matrix between the tracking scanners. According to the technical scheme, the unique advantage that scanning can be carried out without pasting mark points in the tracking type scanning technology is inherited, in the process that multiple sets of photographing type scanners are combined to scan and measure the measured workpiece, and superposition and expansion of scanning view fields of the multiple sets of tracking type scanners can be obtained without moving the scanners, so the scanning range and the scanning efficiency of the tracking scanner are effectively improved, and the method and the device are particularly suitable for the field of automatic detection of large-size workpieces.

Description

technical field [0001] The present application relates to the technical field of visual measurement, in particular to a method and device for joint calibration of multiple sets of tracking scanners. Background technique [0002] With the rapid development of industrial technology, people put forward higher requirements for the visual measurement system. As an important large-scale space measurement benchmark, tracking scanners are widely used in the detection of geometric quantities of parts, product assembly, and intelligent manufacturing equipment. For products under test with complex internal structures and large volumes, it is already difficult for a single set of tracking scanners to complete the measurement task independently, and it is necessary to set up multiple sets of scanners for combined measurement to obtain more complete information about the product under test. Using multiple sets of tracking scanners together can not only effectively expand the measurement ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/80G06T7/246
CPCG06T7/80G06T7/246G06T2207/30244G06T2207/30241
Inventor 徐玉凯李仲平李洲强李仁举
Owner TENYOUN 3D(TIANJIN)TECH CO LTD
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