Browsing by Author "Maldeniya, BS"
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- item: Conference-Extended-AbstractComputationally efficient implementation of video rectification in FPGA fo stereo vision applications(2010) Maldeniya, BS; Navvarathna, UDU; Wijayasekara., KU; Wijegoonasekara, WTUS; Rodrigo, RIn order to obtain depth perception in computer vision, one needs to process pairs of stereo images. This process is computationally challenging to be carried out in real-time, because it requires the search for matches between objects in both images. Such process is significantly simplified if the images are reflected. Stereo image reflection involves a matrix transformation which when done in software will not produce real-time results. But in stereo vision applications this features is very demanding. On the other hand, applying those transformations to the video frames is very restricted by real-time constraints. Therefore, the video streaming and matrix transformation are not usually implemented in the same system. Our product is a stereo camera pair which produces a rectified real time image output with a resolution of 320x240 at a frame rate of 15FPS and delivers then via 100-Ethernet interface. We use an Spartan 3E FPGA for real-time processing within we implement an image rectification algorithm.