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Calibration plate and calibration method for field of view calibration of multi-modal acquisition system

A technology of acquisition system and calibration board, applied in the field of computational photography

Active Publication Date: 2021-01-19
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are calibration methods and calibration objects for camera arrays, photon detector arrays or phase acquisition systems alone, but there is a lack of calibration methods and calibration object designs for multi-mode acquisition systems that integrate the above three types of sensors.

Method used

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  • Calibration plate and calibration method for field of view calibration of multi-modal acquisition system
  • Calibration plate and calibration method for field of view calibration of multi-modal acquisition system
  • Calibration plate and calibration method for field of view calibration of multi-modal acquisition system

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Embodiment Construction

[0032] Embodiments of the present invention will be described in detail below. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0033] refer to figure 1 , in one embodiment, a calibration plate for field of view calibration of a multi-modal acquisition system, the calibration plate is provided with a reflective area 2, a feature identification area 1 and a transmission hole 3, the reflective area 2 and The feature identification area 1 is formed by a plurality of grids, wherein the reflective area 2 has two grids with different reflectivities, and the two grids with different reflectivities are located between the feature identification area 1 and the grid. The transmission holes 3 are periodically arranged alternately around, the feature identification area 1 and the reflection area 2 have obvious color differences, the transmission holes 3 are located in the center of the fea...

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Abstract

The invention discloses a calibration board and a calibration method for field-of-view calibration of a multi-modal acquisition system. The calibration board is provided with a reflection area, a feature identification area and a transmission hole. The reflection area and the feature identification area are formed by arranging a plurality of squares; wherein the reflecting area is provided with two kinds of grids with different reflectivity; wherein the two kinds of grids with different reflectivity are periodically and alternately arranged around the feature recognition area and the transmission hole, the feature recognition area and the reflection area have obvious color difference, and the transmission hole is located in the center of the feature recognition area and is made of a transparent uniform material. According to the invention, the transformation relation between the multi-mode acquisition system view fields can be accurately obtained, and the joint calibration for the consistency of the multi-mode acquisition system view fields can be simply, conveniently and reliably completed.

Description

technical field [0001] The invention relates to the field of computational photography, in particular to a calibration plate and a calibration method for the field of view calibration of a multi-mode acquisition system. Background technique [0002] The multi-mode acquisition system integrates multiple types of sensors (including camera arrays, photon detector arrays, and phase acquisition systems) to collect multi-dimensional and multi-type data of the object to be observed to achieve a clearer multi-dimensional reconstruction of the target. Constrained by the spatial position, the multi-type sensors in the multi-mode acquisition system often have differences in spatial position, resulting in inconsistent fields of view of the multi-mode acquisition system. However, in the practical application of multi-mode acquisition systems, multi-type sensors are used to describe the same target from multiple data dimensions, which limits the multi-mode acquisition system to pre-calibr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/80G01J1/44G01J9/00
CPCG01J1/44G01J9/00G01J2001/442G01J2001/444G06T2207/30208G06T2207/30244G06T7/85
Inventor 金欣王枭宇戴琼海
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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