Oliver Klehm

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We propose a non-permanent add-on that enables plenoptic imaging with standard cameras. Our design is based on a physical copying mechanism that multiplies a sensor image into a number of identical copies that still carry the plenoptic information of interest. Via different optical filters, we can then recover the desired information. A minor modification(More)
Volumetric phenomena are an integral part of standard rendering, yet, no suitable tools to edit characteristic properties are available so far. Either simulation results are used directly, or modifications are high-level, e.g., noise functions to influence appearance. Intuitive artistic control is not possible. We propose a solution to stylize(More)
Although volumetric phenomena are important for realistic rendering and can even be a crucial component in the image, the artistic control of the volume's appearance is challenging. Appropriate tools to edit volume properties are missing, which can make it necessary to use simulation results directly. Alternatively, high-level modifications that are rarely(More)
Figure 1: Left: single scattering using the original geometry of the scene. The leaves of the tree block most of the light, causing only a subtle scattering effect. Right: scattering created by occluder manipulation. Using our system, an artist can easily add holes into the shadow map of the tree, causing an increased amount of and more interesting(More)
Figure 1: Possible game scenario with lighting using bent normals: 2048 × 1024 pixels, 60.0 fps, including direct light and DOF on an Nvidia GF 560Ti. Environment mapping produces natural illumination, while bent normals cause colored shadows. Abstract Ambient occlusion (AO) is a popular technique for real-time as well as offline rendering. One of its(More)
Facial appearance capture is now firmly established within academic research and used extensively across various application domains, perhaps most prominently in the entertainment industry through the design of virtual characters in video games and films. While significant progress has occurred over the last two decades, no single survey currently exists(More)
Figure 1: a) Input: Kaleidoscope image. b) User-drawn mask (green checkerboard pattern). c) User-drawn mask isolated. d) Approximate visual hull generated from (c) using image-based shading. e) Resulting labeling via visual hull. Abstract Mirror systems have recently emerged as an alternative low-cost multi-view imaging solution. The use of these systems(More)