FPGAs boost image compression
18 March 2008
A hardware compression platform uses Xilinx FPGA accelerators to improve image compression.
Manufacturer 4DSP has announced the VID475 JPEG2000 wavelet-based, digital imaging compression standard that supersedes the original discrete cosine transform-based JPEG compression method, claims the company. This advance improves image compression in precision imaging applications such as medical and military as well as in consumer applications of digital cameras, 4G infrastructure and headsets.
It is claimed to be the preferred compression method to store vital digital data from microscopy and radiography imagery instruments and can be used for premium compression in demanding medical applications. The company’s JPEG2000 PMC daughter card is based on two ADV212 devices and the Spartan-3AN FPGA from Xilinx. The codec hardware grabs and compresses up to 140Mpixel/sec from two independent cameras. It can either encode the video frames before or after applying an advanced video/imaging algorithm. The Virtex-4 or Virtex-5 FPGA can perform real-time pre-processing of raw data which can correct effects such as local brightness or barrel distortion to improve image quality and filter out elements.
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