Digital camera calibration






Digital camera calibration methods: considerations and comparisons
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Camera calibration has always been an essential component of photogrammetric measurement, with self- calibration nowadays being an integral and routinely applied operation within photogrammetric triangulation, especially in high-accuracy close-range

EuroSDR network on digital camera calibration
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This paper documents the status of the actual Phase 1 of the EuroSDR project on Digital Camera Calibration . This project was officially installed in October 2003 during the 103rd EuroSDR Science and Steering Committee Meetings. Up to now about 35 experts from

Digital camera calibration using images taken from an unmanned aerial vehicle
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For calibrating the camera an accurate determination of the interior orientation parameters is needed. For more accurate results, the calibration images should be taken under conditions that are similar to the field samples. The aim of this work is the establishment of

Digital camera calibration
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This final report of the EuroSDR network on Digital Camera Calibration and Validation presents all results from empirical testing and summarizes the main findings. The project itself emphasizes the calibration and validation of digital airborne cameras, where mainly

Digital multi-sensor systems- calibration and performance analysis
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The main differences are due to the lack of digital camera calibration information and the poor geometry of digital cameras . Therefore, the digital camera calibration and the boresight calibration can either be done sequentially or simultaneously

The EuroSDR performance test for digital aerial camera systems
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p q g geometrical aspects and verification Empirical testing should not lead to direct comparisons of cameras but to individual calibration recommendations for each digital camera design Empirical phase 2 extended to Phase 2b (finished 2007)

A European network on digital camera calibration
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Background The need of a camera calibration is a fundamental requirement in the context of photogrammetric data processing. For airborne sensors this calibration is typically realized under well controlled laboratory conditions. In this case, special calibration devices are used

The effects of temperature variation on single-lens-reflex digital camera calibration parameters
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It is well known that temperature changes affect the geometric characteristics of cameras . Metric cameras cameras specifically designed for photogrammetric work, are purposely built to maintain a stable geometry. However, the storage and working temperature

Boresight calibration of integrated inertial/ camera systems
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The main differences are due to the lack of digital camera calibration information and the poor geometry of digital cameras . Therefore, the digital camera calibration and the boresight calibration can either be done sequentially or simultaneously

A study on calibration of digital camera
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Recent increase in number of pixels of images acquired by a non-metric digital camera encourages an amateur to utilize it for 3D measurement. Most of current camera calibration methods are inconvenient and expensive for an amateur to calibrate his digital camera

The EuroSDR approach on digital airborne camera calibration and certification
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The comprehensive analysis of new digital airborne photogrammetric camera systems is an important topic right now. Faster than originally expected the new digital sensors phased into market and are already used in production processes. Furthermore, some national

EuroSDR: digital camera calibration and validation
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Airborne imaging dominates the show this was the sub-title of Gordon Petries report on the technical exhibition of the ISPRS 2004 Istanbul congress published in GeoInformatics October/November volume 7/2004. If one reads that article one could even add the term

Investigation into self- calibration methods for the Vexcel UltraCamD digital aerial camera
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This paper provides an investigation into the camera calibration of a Vexcel UltraCam D digital aerial camera which was undertaken as part of the EuroSDR Digital Camera Calibration project. This paper will present results from two flights flown over a test site atmeasure is especially convenient for calibrations that are based on digital images polynomials without considering all optical characteristics of lens elements and camera assembly at all and would be computationally inefficient and unreliable for usual cameras whose distortion

Impact of camera and system calibration on photogrammetric reconstruction using medium format digital camera
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Current advances in digital and electronic products have led to the availability of inexpensive and reliable Medium Format Digital Cameras (MFDCs) that can be used in many photogrammetric applications. In this research, the impact of camera and system

Calibration of low cost digital camera using data from simultaneous Lidar and photogrammetric surveys
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Digital photogrammetric products from the integration of imagery and lidar datasets are a reality nowadays. When the imagery and lidar surveys are performed together and the camera is connected to the lidar system, a direct georeferencing can be applied to compute

Experimental results of digital camera calibration
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Calibration of CCD camera is a prerequisite for the extraction of precise three-dimensional information from imagery in photogrammetry, computer vision, and other vision areas, which adopt the imaging component as a data acquisition tool. Bundle adjustment with self

Performance evaluation of a 5 megapixel digital metric camera for use in architectural photogrammetry
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Off-the-shelf digital cameras have to be regarded as non-metric cameras The interior orientation values of such a camera have to be determined by simultaneous calibration within the 3-D object reconstruction process as far as somewhat precise results are required

Precise method of fisheye lens calibration
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Paper presents new approach to the digital camera calibration process Researches were made using calibration test field containing about 250 reference points and two cameras Kodak DCS 14nPro with 10.5 mm and Nikon 65 with 16 mm fisheye lenses

Digital camera calibration analysis using perspective projection matrix
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This work presents a novel and simplified technique to estimate the perspective projective matrix elements of calibration matrix for pinhole model in Digital Camera Calibration . The perspective projective matrix parameters are variables depending of environmental

Digital camera calibration for mining applications

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