Common use of System Architecture Clause in Contracts

System Architecture. The VVDC system comprises a WinTV-USB device (details for this device are available at ▇▇▇▇://▇▇▇.▇▇▇▇▇▇▇▇▇.▇▇▇/html/usb_data.htm) and a personal computer. It is designed for both online and offline operations on a regular personal computer running Windows 2000 or Windows XP. The personal computer used for VVDC system development was a Dell Latitude D600 laptop computer with a Pentium M 1.6 GHz Central Computing Unit, 1-GB memory, and a 32-MB ATI Radeon 9000 video card. It ran the Windows XP Professional operating system. The WinTV-USB device is used for digitizing live video signals. When the VVDC system is executed offline, it reads digitized video images from a storage media, and the WinTV-USB device is not necessary. For online operations, the VVDC system reads real-time images from the WinTV-USB device from the location where a live video signal source is connected. The live video source can be a video cassette player or a video camera. The components of the VVDC system and possible video data sources are shown in Figure 6-1. Video Data link Computer Video Data Source The software component of the VVDC system was written in the Microsoft Visual C# programming language. It has six modules: a live video capture module, a user input module, a background extraction module, a vehicle detection module, a shadow removal module, and a length-based classification module. The relationships among these modules are illustrated in Figure 6-2. Details of each module are described in the following sections. Background Extraction Queue Image media Nth Image … 2nd Image Live video No Detection line occupied? Yes No Vehicle registered? No Yes Yes Count long vehicle Count the vehicle USB Port Extracted background Pixel-based length New Frame Get Bounding Box Shadow sample LV threshold Virtual detector Vide capture Edge Detection Compute Centroid Shadow Removal Find the median of color values for each pixel 1st Image USB Port Live video Vide capture No Detection line Yes No Yes Count the vehicle