Michael Donikian

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Lightcuts is a scalable framework for computing realistic illumination. It handles arbitrary geometry, non-diffuse materials, and illumination from a wide variety of sources including point lights, area lights, HDR environment maps, sun/sky models, and indirect illumination. At its core is a new algorithm for accurately approximating illumination from many(More)
This paper introduces a new multipass algorithm for efficiently computing direct illumination in scenes with many lights and complex occlusion. Images are first divided into 8times8 pixel blocks and for each point to be shaded within a block, a probability density function (PDF) is constructed over the lights and sampled to estimate illumination using a(More)
Lightcuts is a new scalable framework for computing illumination in scenes with complex lighting. It handles different types of illumination, including HDR environment maps, sun/sky models, area lights, and indirect illumination and scales well to handle scenes with complex geometry and non-diffuse materials. The core component is a scalable method for(More)
526 patients with essential hypertension or congestive cardiac failure were treated with ticrynafen (250--500 mg/day) or hydrochlorothiazide (50--100 mg/day) for 6 weeks to 6 months. There was no appreciable effect on renal function, as measured by changes in blood urea nitrogen and serum creatinine levels. Both drugs exhibited similar antihypertensive(More)