An interactive cameraless projector calibration method

Portalés, Cristina; Casanova-Salas, Pablo; Casas, Sergio; Gimeno, Jesús; Fernández, Marcos

doi:10.1007/s10055-018-00377-3

Cited by 4 publications

(1 citation statement)

References 35 publications

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“…Afterwards, the system is able to calculate translation and rotation transforms that align the reference system of the user's device with the reference system of the AR annotations. This kind of user-assisted calibration is common in Spatial Augmented Reality applications as shown in [31].…”

Section: Calibration Methodsmentioning

confidence: 99%

Cross-Device Augmented Reality Annotations Method for Asynchronous Collaboration in Unprepared Environments

et al. 2021

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Augmented Reality (AR) annotations are a powerful way of communication when collaborators cannot be present at the same time in a given environment. However, this situation presents several challenges, for example: how to record the AR annotations for later consumption, how to align virtual and real world in unprepared environments or how to offer the annotations to users with different AR devices. In this paper we present a cross-device AR annotation method that allows users to create and display annotations asynchronously in environments without the need for prior preparation (AR markers, point cloud capture, etc.). This is achieved through an easy user-assisted calibration process and a data model that allows any type of annotation to be stored on any device. The experimental study carried out with 40 participants has verified our two hypotheses: we are able to visualize AR annotations in indoor environments without prior preparation regardless of the device used and the overall usability of the system is satisfactory.

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Section: Calibration Methodsmentioning

confidence: 99%

Cross-Device Augmented Reality Annotations Method for Asynchronous Collaboration in Unprepared Environments

et al. 2021

Self Cite

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Stabilizing graphene oxide with complementary nanosheets for robust membranes with high flux

Li,

Feng,

Wang

et al. 2024

Journal of Membrane Science

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Compensation method for projector calibration based on homography and bundle adjustments

Lin¹,

Zhang²,

Wang³

et al. 2020

OSA Continuum

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Projector calibration is one of the most essential steps for structured light systems. Some methods have high precision but require a complicated calibration procedure, such as the method based on phase-shifting. Other methods take advantage of simple implementation but cannot meet the accuracy requirement, for example, the method based on homography. In this paper, we proposed a compensation method for flexible and accurate projector calibration. To make the calibration procedure easy to operate, the homographic matrix between the projector and camera is established through feature points projected. Then, the 2D image points compensation method based on the re-projection error iteration algorithm was carried out, and a modified bundle adjustment (BA) algorithm is put forward to refine the calibration parameters of the system. Finally, the feature point reconstruction experiment is implemented to verify the high flexibility and accuracy performance of the proposed method.

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An interactive cameraless projector calibration method

Cited by 4 publications

References 35 publications

Cross-Device Augmented Reality Annotations Method for Asynchronous Collaboration in Unprepared Environments

Cross-Device Augmented Reality Annotations Method for Asynchronous Collaboration in Unprepared Environments

Stabilizing graphene oxide with complementary nanosheets for robust membranes with high flux

Compensation method for projector calibration based on homography and bundle adjustments

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