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Photorealistic image synthesis is a computationally demanding task that relies on ray tracing for the evaluation of integrals. Rendering time is dominated by tracing long paths that are very incoherent by construction. We therefore investigate the use of SIMD instructions to accelerate incoherent rays. SIMD is used in the hierarchy construction, the tree(More)
We present a fast and simple filtering method designed for ray traced Monte Carlo global illumination images which achieves real-time rates. Even on modern hardware only few samples can be traced for interactive applications, resulting in very noisy outputs. Taking advantage of the fact that Monte Carlo computes hemispherical integrals that may be very(More)
Fig. 1: The left image shows four of our optimization targets for which we generated geometry with our proposed optimization approach. The second and third image show a physically correct light transport simulation illustrating the results. For the living room scene we optimized a glass table to cast the predefined caustic. The letters E C C V in the right(More)
Figure 1: Our progressive rendering system is able to handle a wide range of complex light paths efficiently by combining three approaches. The shown scene contains diffuse and specular objects that are illuminated only by two lamps enclosed in glass. Our system not only handles the bright areas well but allows for smooth indirect illumination from this(More)
We present a massively parallel object recognition system based on a cortex-like structure. Due to its nature, this general, biologically motivated system can be parallelized efficiently on recent many-core graphics processing units (GPU). By implementing the entire pipeline on the GPU, by rigorously optimizing memory bandwidth and by minimizing branch(More)
Fluorescent concentrators (see Figure 1) are developed and investigated in solar energy research in order to improve the efficiency and applicability of solar cells. This is achieved by concentrating even diffuse light on cloudy days on small solar cells, using a fluorescent dye enclosed in low-cost acrylic glass. We developed a Monte Carlo simulation model(More)
In this paper we extend the edge-avoiding à-trous wavelet transform for local contrast enhancement while avoiding common artifacts such as halos and gradient reversals. We show that this algorithm is a highly efficient and robust tool for image manipulation based on multi-scale decompositions. It can achieve comparable results to previous high-quality(More)