Research of the Camera Calibration Using Series of Images With Common Center of Projection

Чибуничев, А. Г.; Govorov, Alexander; Chernyshev, V. E.

doi:10.5194/isprs-archives-xlii-2-w18-19-2019

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…Abaixo são listados os principais acessórios para se utilizar com as câmeras digitais comuns: Cabeça Panorâmica: Dispositivo que auxilia a movimentação de câmeras digitais em torno do centro óptico da câmera (ponto nodal). Ela é muito utilizada para auxiliar a criação de panoramas de grande qualidade (CHIBUNICHEV, et al, 2019).…”

Section: Imagens 360°unclassified

Apresentação interativa de uma Unidade de Conservação utilizando recursos de imersão 360° do Google Street View

Faustino¹,

Silva²

2023

Geosul

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A Unidade de Conservação (UC) denominada Parque Ecológico dos Jequitibás, localizada no Distrito Federal, é voltada para visitação. Visando a utilização de novas tecnologias, este trabalho teve como objetivo criar uma apresentação interativa desta UC, utilizando imagens panorâmicas 360° exibidas por meio de recursos de imersão 360° do Street View do Google Maps. Assim, foram abordados o histórico, recursos, captura, processamento, peculiaridades e inserção das imagens panorâmicas 360° na Ficha Local da UC no Google Maps. Obteve-se como principal resultado a oferta de conteúdo interativo que pode ser considerado um recurso de acessibilidade, fonte de informação, recurso didático em ensino, geração de renda por meio da replicação do método e fonte de registro temporal de informações.

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Section: Imagens 360°unclassified

Apresentação interativa de uma Unidade de Conservação utilizando recursos de imersão 360° do Google Street View

Faustino¹,

Silva²

2023

Geosul

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“…Although the calibration of digital cameras has been well studied and developed, research in this area continues and will continue because numerous results of calibrations of various cameras show the need to improve the accuracy of calibration. In the works (Thomas Luhman, et al 2019, Mikhailov A. P., Chibunichev A. G. 2016, Barazzetti, L., et al 2011, Chibunichev, A. G., et al, 2019, Knyaz, V. A. 2006, Knyaz, V. A. and Moshkantsev, P. V. 2019, you can find a description of the main methods of calibration of digital cameras used today.…”

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confidence: 99%

Study of Digital Camera Calibration on a Flat Test Object

Govorov

Чибуничев

Makarov

2020

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Abstract. The paper presents a method for calibration of digital cameras based on the use of a flat test object. The main distinctive feature of this method is that the camera is fixed and does not change its position in space. A series of images of a flat test object (for example, a chessboard) is taken at various distances and inclination of the test object. One should tilt the test object relative to the image plane in order to avoid ambiguity in solving the problem. All these images are measured separately, and processing is performed together, counting them as one image with common exterior orientation elements. Experimental studies have shown sufficient efficiency of such calibration, which is easily implemented and gives positive results in comparison with the classical calibration of the camera on a spatial test object. The results of experimental studies on real images have shown that proposed calibration method gives the comparable with conventional method accuracy. Thus, it is possible to use simple and cheap flat calibration test object instead of spatial one. To achieve the maximum result in camera calibration accuracy, use this method to tilt the chessboard at angles in the range of 30–40 degrees to the optical axis of the camera being calibrated.

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Optical 3d Measurements in Hydrodynamic Tunnel for Aircraft Icing Study

Knyaz

Stepaniants

Ippolitov

et al. 2020

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Abstract. The study of how aircraft icing influences on aircraft aerodynamic performance is very important for developing measures and recommendation to improve aircraft flight safety. The effective method of aerodynamic processes modeling is experiment in wind (aerodynamic) tunnel or water (hydrodynamic) tunnel. They allow to perform experiments with a scaled model of an aircraft affected by icing and to visualize the wing flow process and changes caused by icing. While visualization of the wing flow yields useful qualitative information about flow, it is more important to retrieve quantitative 3D data of flow, which allows to forecast icing process and to develop anti-icing techniques and recommendations.The presented study addresses to creating an photogrammetric system and 3D measurement techniques for quantitate evaluation of 3D flow parameters in a hydrodynamic tunnel for aircraft icing influence exploration. Being an initial part of a long-term research project, this study is aimed at developing of an accurate calibration technique of the photogrammetric system for 3D measurement in condition of two optical media interfaces. The developed algorithms for imaging process through two optical media interfaces are used in calibration procedure and object 3D coordinates measuring. The results of the photogrammetric system calibration are given in comparison with standard (single media) case. Experimental 3D reconstruction of a typical object demonstrated high accuracy of the developed algorithms.

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Research of the Camera Calibration Using Series of Images With Common Center of Projection

Cited by 3 publications

References 5 publications

Apresentação interativa de uma Unidade de Conservação utilizando recursos de imersão 360° do Google Street View

Apresentação interativa de uma Unidade de Conservação utilizando recursos de imersão 360° do Google Street View

Study of Digital Camera Calibration on a Flat Test Object

Optical 3d Measurements in Hydrodynamic Tunnel for Aircraft Icing Study

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