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Many risk factors affect software development and risk management has become one of the major activities in software development. Discovering causal directions among risk factors and project performance are important support for risk management. The Additive Noise Model (ANM) is an effective algorithm for discovering the direction on one-to-one causalities, but ineffective on many-to-one causalities...
Image fusion was one of the most important technology of pattern recognition. This paper proposed a fast superresolution image reconstruction algorithm basing on image sequences. Iterative back-projection (IBP) technique was used to construct high resolution from image sequences. roughly registered basing on feature and then use Registration algorithm basing on Gray to optimize the result. Iterative...
Surface somatosensory evoked potentials (SSEP) collected from conscious subjects usually presents poor signal-to-noise ratio (SNR), requiring several hundreds ensembles averaging to provide a meaningful waveform. A FPGA based adaptive filtering is proposed to perform fast and accurate SSEP extraction by fixed-point adaptive noise canceller (ANC). In 6 normal subjects and 1 neurological abnormal patient,...
This paper presents an approach for compression and synthesis of BTF (bidirectional texture function), and using it BTF can be mapped on arbitrary surfaces. BTF is a kind of multidimensional texture data, which can perfectly shows the self-shadow, self-occlusion and inter-reflection reflectance of object surfaces under varying light directions. However, it is difficult to use BTF on object surfaces...
This paper presents a real-time soft shadow rendering algorithm based on the shadow-mapping technique. The key idea of this algorithm is to use only a single shadow map for a flat extended light source. The algorithm also uses the single shadow map to discretize the occluders to many flat patches which are parallel with the light source. Finally, these patches are used to compute the percentage of...
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