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Multiclops — Computer Vision Outside the Box


August 13, 2001 - Multiclops allows users to literally model both sides of the coin—or whatever object is being mapped—by integrating images from two or more stereo cameras. It is the latest addition to PGR’s family of software development kits available for free download to Digiclops users. Existing SDK’s include Triclops, which provides high-speed, accurate 3D processing; PGR Avatar for face modelling; and Censys3D, an online tracking and counting system that can follow and identify individuals in a crowd under varying lighting and environmental conditions.


The Multiclops SDK can track both shape and movement from multiple points of view, providing affordable 3D modelling of large and moving objects. By integrating new cameras into an existing system, the field-of-view is increased and previously hidden elements are brought into the picture.


“One of the limitations of computer vision applications is the requirement for objects to be within the camera’s line-of-sight and field-of view,” says PGR’s Vladimir Tucakov. “Multiclops allows you to grab 3D point clouds from more than one Digiclops camera and combine them into a single 3D point cloud.”


The Multiclops software leverages Digiclops’ high calibration specifications (images are rectified to within 0.06 pixels) and the system’s ability to automatically synchronize to other Digiclops cameras on the same IEEE-1394 bus. This allows users to accurately determine system-to-system transformations between multiple Digiclops cameras with a simple procedure. Images are then processed using the Triclops library and the resulting 3D data is integrated into a single coordinate system.


Multiclops can be used on-line for video game control, people tracking and other applications that require constant processing. Model or motion data generated by Digiclops can be stored and processed off-line for greater accuracy and 3D model quality—particularly in applications such as animation. Additional functionality to distribute Multiclops over multiple computers to decrease processing time is currently under development.

Point Grey Research is a worldwide leader in the development of advanced digital camera technology products. Based in Vancouver, British Columbia, PGR designs, manufactures and distributes IEEE-1394 cameras, stereo vision cameras and spherical digital video cameras to a broad spectrum of industries. Through a close working relationship with its customers, PGR continues to be at the forefront of innovation.

For further information on Point Grey Research and its products, contact Vladimir Tucakov at tucakov@ptgrey.com or by phone at 604-730-9937. For media enquiries contact Ana Dimapilis at ana@ptgrey.com.


Vancouver, British Columbia, CANADA