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A Multi-Camera Calibration Method in 3D Modeling

A calibration method and 3D technology, applied in image analysis, image enhancement, instruments, etc., can solve problems such as angle insensitivity, camera position setting error, difficulty in accurately determining the angle, etc., to improve synthesis accuracy, increase synthesis speed, and improve adaptive effect

Active Publication Date: 2021-05-11
天目爱视(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, it is found that unless there is an accurate angle measurement device, the user is not sensitive to the angle, and it is difficult to determine the angle accurately; the size of the target object is difficult to accurately determine, such as the scene constructed by the 3D model of the above-mentioned riverside house
And the measurement error leads to the camera position setting error, which will affect the acquisition and synthesis speed and effect; the accuracy and speed need to be further improved

Method used

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  • A Multi-Camera Calibration Method in 3D Modeling
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  • A Multi-Camera Calibration Method in 3D Modeling

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Embodiment Construction

[0047] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0048] 3D Acquisition Calibration Process

[0049] Such as figure 1 As shown, when the target object to be collected is B, the calibration object A can be placed around the B at this time, but in many cases the calibration object A cannot be placed near the target object B. At this point you can:

[0050] (1) Set up the collection device m to ensure that the calibration object A is within its collection range; set up the collect...

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Abstract

An embodiment of the present invention provides a calibration method in 3D modeling. The first collection device collects the image of object A; the second collection device collects the image of object B; both the first collection device and the second collection device collect the image of object C ; where object A is not within the collection range of the first collection device; object B is not within the collection range of the second collection device; object A is the calibration object, and object B is the target object; or object A is the target object, and object B is the calibration object ; There are multiple calibration points on the calibration object; the coordinates of the target object are calibrated according to the coordinates of the multiple calibration points. The absolute size calibration of long-distance target objects is realized through the method of multi-camera relay shooting.

Description

technical field [0001] The invention relates to the technical field of shape measurement, in particular to the technical field of 3D shape measurement. Background technique [0002] At present, when using a visual method for 3D acquisition and measurement, the camera is usually rotated relative to the target object, or multiple cameras are set around the target object for simultaneous acquisition. For example, the Digital Emily project of the University of Southern California uses a spherical bracket, and hundreds of cameras are fixed at different positions and angles on the bracket, so as to realize 3D acquisition and modeling of the human body. However, in either way, the distance between the camera and the target object needs to be short, at least within the range that can be arranged, so that the camera can collect images of the target object at different positions. [0003] However, in some applications, it is not possible to collect images around the target object. F...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/80
CPCG06T2207/10028G06T7/85
Inventor 左忠斌左达宇
Owner 天目爱视(北京)科技有限公司
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