Results 251 to 260 of about 23,152 (288)
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Flexible projector calibration for active stereoscopic systems
2010 IEEE International Conference on Image Processing, 2010This contribution deals with the calibration of active stereoscopic systems consisting of a camera and a structured light projector. Usually, expensive equipments like precise calibration pieces or dedicated positioning devices are used for the projector calibration.
Ben Hamadou, Achraf +4 more
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A flexible technique for slide projector calibration
SPIE Proceedings, 2003With the development of non-contact measurement in the close range photogrammetry, the use of the slide projector becomes familiar and frequent. In order to take full advantage of the slide projector in the procedures of diverse photogrammetric measurements, the slide projector needs to be calibrated at first.
Jianqing Zhang, Jun Tao, Zuxun Zhang
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Multi-projector display with continuous self-calibration
Proceedings of the 5th ACM/IEEE International Workshop on Projector camera systems, 2008Most existing calibration techniques for multi-projector display system require that the display configuration remain fixed during the display process. We in this paper present a new approach to continuously re-calibrate the projection system to automatically adapt to the display configuration changes, while the multi-projector system is being used ...
Jin Zhou +3 more
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Auto-calibration for multi-projector 3D display
SPIE Proceedings, 2014For typical multi-projector 3D display systems, precise calibration of projectors is extremely important for ensuring projected images/videos to coincide exactly in the same region of the screen to obtain high quality 3D display experience. Conventional calibration is achieved by adjusting the pose of projectors manually with the built-in keystone ...
Shao Tang, Lei Zhang, Yongbing Zhang
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Uncertainty Evaluation of Profile Projector Calibration
NCSL International Workshop & Symposium Conference Proceedings 2016, 2016A profile projector is an optical measuring instrument that magnifies a workpiece's surface features to allow measurement on a linear or circular scale. It is also referred to as an optical comparator, since dimensions can be measured directly on the screen or compared to a standard reference at the correct magnification.
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Calibration of a camera–projector monochromatic system
The Photogrammetric Record, 2015AbstractCamera–projector systems are increasingly being used in many different applications, including object reconstruction. In recent years, a number of approaches have been proposed to calibrate such devices; in this paper a calibration method is presented which can be used with monochromatic systems.
Cristina Portalés +3 more
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Automatic projector calibration with embedded light sensors
Proceedings of the 17th annual ACM symposium on User interface software and technology, 2004Projection technology typically places several constraints on the geometric relationship between the projector and the projection surface to obtain an undistorted, properly sized image. In this paper we describe a simple, robust, fast, and low-cost method for automatic projector calibration that eliminates many of these constraints.
Johnny C. Lee +4 more
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Calibration issues for projector-based 3D-scanning
Proceedings Shape Modeling Applications, 2004., 2004In this paper we want to introduce an approach to 3D scanning of dynamic scenes. This implementation enables the user not only to manually move a scan head over the object to scan but also to capture moving objects. Registration from scan to scan is done in real-time. The user interacts with the system and watches the scene assembling.
Gockel, T., Azad, P., Dillmann, R.
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Automatic Projector Calibration Using Self-Identifying Patterns
2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05) - Workshops, 2006Calibrating multiple monitor or projector display elements to provide a composite image can be a time-consuming task if performed manually. Ideally the user would like to roughly aim a number of projectors at a surface, define the desired display corners, and have some automatic method to align the display.
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Photometric Self-Calibration of a Projector-Camera System
2007 IEEE Conference on Computer Vision and Pattern Recognition, 2007In this paper, we present a method for photometric self- calibration of a projector-camera system. In addition to the input transfer functions (commonly called gamma functions), we also reconstruct the spatial intensity fall-off from the center to fringe (commonly called the vignetting effect) for both the projector and camera. Projector-camera systems
Ray Juang, Aditi Majumder
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