4DCapture/4DPlayer: evolving software packages for capturing, analyzing and displaying two- and three-dimensional motion data

James S. Walton; Peter N. Hodgson; Karen G. Hallamasek

doi:10.1117/12.725053

11 January 2007 4DCapture/4DPlayer: evolving software packages for capturing, analyzing and displaying two- and three-dimensional motion data

James S. Walton, Peter N. Hodgson, Karen G. Hallamasek

Author Affiliations +

Proceedings Volume 6279, 27th International Congress on High-Speed Photography and Photonics; 627903 (2007) https://doi.org/10.1117/12.725053
Event: 27th International congress on High-Speed Photography and Photonics, 2006, Xi'an, China

Abstract

In September 2002, during the 25^th Congress on High Speed Photography and Photonics, 4DVideo described a general purpose software application for the PC platform. This software (4DCapture^TM) is designed to capture, analyze and display multiple video sequences. The application extracts trajectories and other kinematic information from (highspeed) video streams. Since 4DCapture^TM was originally described, it has matured, and a second application (4DPlayer^TM) has been introduced to support the distribution and viewing of video streams and kinematic data acquired by 4DCapture^TM. 4DPlayer^TM is "freeware". It may be redistributed to third parties, but it may not be modified. 4DCapture^TM provides a structured environment for experimental data. Cameras are treated as transducers-that is, a source of technical data. The application provides an interface to the cameras for previewing the object-space, calibrating the images, and testing. This application can automatically track multiple landmarks seen from two or more views in two or three dimensions. Trajectories can be processed within the main application or they can be exported to a spreadsheet where they can be processed or passed along to a more sophisticated, data analysis application. 4DCapture^TM also incorporates a simple animation capability and a friendly (FlowStack^TM) user interface that assists the end-user to capture and treat image sequences in a natural progression. 4DCapture^TM employs the AVI 2.0 standard and DirectX technology. 4DPlayer^TM can be used to view multiple video sequences simultaneously and perform simple measurements of displacements and angles that vary over time. This application can detect and display the coordinates of landmarks previously identified by 4DCapture^TM that have been embedded in the video streams.

Citation Download Citation

James S. Walton, Peter N. Hodgson, and Karen G. Hallamasek "4DCapture/4DPlayer: evolving software packages for capturing, analyzing and displaying two- and three-dimensional motion data", Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 627903 (11 January 2007); https://doi.org/10.1117/12.725053

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