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Previously, various rectification methods using compressed lookup table have been studied for real-time hardware stereo vision system. These loss compression methods may occur distortion that could corrupt disparity estimation process. Differentially encoded lookup table method which is lossless compression has no distortion with reasonable compression ratio. However, the method is limited to low-resolution...
With the shrinking integrated circuits (IC) technology and the popularity of portable electronic devices, power dissipation has become a critical issue in very large scale integrated (VLSI) circuits design. To reduce the power dissipation, much attention had been drawn to the techniques in process technology, circuits level, gates level and register-transfer (RT) level. However, from the experience...
In this paper, we have suggested a dynamic search range method to reduce a matching cost of the local stereo matching process basing on the sparse representation theory. The suggested method analyzes sparse disparity map, generating the valid search range information and then using the analyzed information skip the region where the matching blocks are not likely to be found in a dense disparity map...
In our related work, we proposed Cognitive Stereo Auto Focus for stereo camera. Instead of moving optical axis, Cognitive Stereo Auto Focus shifts one side image to the opposite side for setting focus. In the shifting process, focus point should be set on the proper place not to cause any side effect produced by visual fatigue to user. To perform low visual fatigue focusing, Cognitive Stereo Auto...
In this paper, a new hardware implementation for the real time disparity map is presented. The real time disparity map includes the Dynamic Search Range Estimation, Disparity estimation, and Error Correction. Our demonstrated design flow shows an approach to implementation and hardware architecture of real-time disparity map estimation. This design is efficiently synthesized on Xilinx vertex 5 VLX...
As requirements of 3D contents have been increased, a matching algorithm to obtain a disparity-map becomes vibrant research field. This processing includes a multi-sliding-window-operation (MSWO) which requires high memory and processing-time consumption. In this paper, we propose an effective hardware architecture with convergence of on-chip memory and shift registers, and parallelized cores. We...
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