Pattern Recognition

Orad’s Pattern Recognition system is undoubtedly the most cost effective tracking system available and is ideal for entry-level systems as well as studios with a relatively large number of cameras.
Based on proprietary algorithms, the camera’s position, orientation and field of view are extracted from the video signal itself, eliminating the need for tracking equipment to be mounted on the camera. Pattern Recognition tracking is compatible with all types of studio cameras and lenses, and supports multi camera productions. 

Pattern Recognition tracking utilizes traditional blue or green screen chroma key techniques with the addition of grid lines of similar blue or green hue on top of the backdrop. The video signal from the studio camera is processed through Orad’s Digital Video Processor (DVP) which calculates the orientation, position and zoom of the studio camera. The data is then streamed through the network to Orad’s rendering platform, the HDVG, which renders the background graphics according to the tracking data. The pattern lines are completely removed by the chroma keying process. Only a small portion of the grid is required to be visible to the camera in order to generate precise camera tracking, identifying the camera’s pan, tilt, roll and field of view parameters.

As no physical devices are mounted onto studio cameras, the system setup is extremely simple. Once the grid is mounted to the blue or green box wall, the Pattern Recognition algorithm automatically extracts the camera parameters and the virtual studio is ready to go on-air in a matter of seconds.

Pattern Recognition systems can work in any video environment and can support PAL, NTSC, SD or HD formats.Grids are available for customers in three sizes: 2x1 meters, 4x2.5 meters and 5x3 meters. Orad also offers customized grid sizes as per customer’s request.