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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)
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)
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)
Figure 1: Comparison of standard textures with rank-1 lattice textures where each image contains the same number of picture elements (64 × 64). Rank-1 lattices can very closely approximate the hexagonal lattice. This reduces aliasing and results, among other things, in an improved reproduction of non axis-parallel lines as can be seen clearly in the middle(More)