Abstract: A sliding window (block) system incorporating a methodology for providing a processor access to image data is described. In an exemplary embodiment, the system operates as follows. An image is received for processing that has a size that is too large for the processor to access directly. As a result, the sliding window system creates first, second, and third swappable windows (blocks) for accessing image data from the image; each windows is swappable so that any two are available within the memory space of the processor while a third is being loaded in a background memory. The system cycles through the three windows such that, at any given point in time, two of the three windows are affixed in the memory space of the processor as left and right adjacent windows, while the remaining or third window is being loaded in the background (e.g., in a DRAM) as a temporary shadow or background window. After the shadow window is loaded with appropriate image data, it is brought into the foreground (i.e.

Abstract: An ASIC-implemented wavelet transformation engine (circuit) providing a wavelet filter is described. The wavelet filter itself provides up to a 9-stage FIR (finite impulse response) filter with symmetrical coefficients. The architecture of the filter includes data inputs, a bank of shift registers (register bank), coefficient registers, a multiplier/accumulator, a sub-sampling component, and output (results) registers. The filter provides a wavelet-based compression solution that may be implemented in less-costly, page-based memory architecture (e.g., SDRAM), and does so in a manner that overcomes the inherent speed disadvantage encountered due to the horizontal-optimized access strategy employed by page-based memory architectures.

Abstract: The present invention relates to an image/video enhancement system and method for transmission of the image/video. The system processes an image before transmission using a pre-processor and then de-processes it after transmission using a post-processor. The pre-processor increases the compression ratio of the compression scheme used by the transmission system without losing image quality. The post-processor restores the transmitted image to a high-quality image.

Abstract: A system which retrofits to an existing surveillance system and cooperates with sensors, video cameras and video monitors of the existing surveillance system. The system comprises a plurality of processing boards having a substantially similar architecture. Several frame grabber/frame storage processing boards are provided, each of which digitize the analog video signals from the video cameras and stores the digital data in a solid state buffer memory. Several display boards are provided to display the digitized video data on display monitors. A controller board controls the exchange of video data and command or control messages over a video link and between processing boards, respectively. Additional expansion boards may be added to support additional buffering and system options. Each processing board is built around a parallel processing computer chip.