P. Hanrahan

Publications314
h-index88
Citations55,999
Highly Influential Citations3,708
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Opt
Many graphics and vision problems can be expressed as non-linear least squares optimizations of objective functions over visual data, such as images and meshes. The mathematical descriptions of these… Expand
ShapeNet: An Information-Rich 3D Model Repository
TLDR
ShapeNet contains 3D models from a multitude of semantic categories and organizes them under the WordNet taxonomy, a collection of datasets providing many semantic annotations for each 3D model such as consistent rigid alignments, parts and bilateral symmetry planes, physical sizes, keywords, as well as other planned annotations. Expand
Light field rendering
TLDR
This paper describes a sampled representation for light fields that allows for both efficient creation and display of inward and outward looking views, and describes a compression system that is able to compress the light fields generated by more than a factor of 100:1 with very little loss of fidelity. Expand
Light Field Photography with a Hand-held Plenoptic Camera
This paper presents a camera that samples the 4D light field on its sensor in a single photographic exposure. This is achieved by inserting a microlens array between the sensor and main lens,… Expand
A practical model for subsurface light transport
TLDR
A simple model for subsurface light transport in translucent materials that enables efficient simulation of effects that BRDF models cannot capture and a new, rapid image-based measurement technique for determining the optical properties of translucent materials. Expand
Brook for GPUs: stream computing on graphics hardware
TLDR
This paper presents Brook for GPUs, a system for general-purpose computation on programmable graphics hardware that abstracts and virtualizes many aspects of graphics hardware, and presents an analysis of the effectiveness of the GPU as a compute engine compared to the CPU. Expand
Digital light field photography
Focusing images well has been difficult since the beginnings of photography in 1839. Three manifestations of the problem are: the chore of having to choose what to focus on before clicking the… Expand
On the relationship between radiance and irradiance: determining the illumination from images of a convex Lambertian object.
TLDR
This work derives a simple closed-form formula for the irradiance in terms of spherical harmonic coefficients of the incident illumination and demonstrates that the odd-order modes of the lighting with order greater than 1 are completely annihilated, contradicting a theorem that is due to Preisendorfer. Expand
A signal-processing framework for inverse rendering
TLDR
This work introduces a signal-processing framework which describes the reflected light field as a convolution of the lighting and BRDF, and expresses it mathematically as a product of spherical harmonic coefficients of the BRDF and the lighting. Expand
An efficient representation for irradiance environment maps
TLDR
A simple and efficient procedural rendering algorithm amenable to hardware implementation, a prefiltering method up to three orders of magnitude faster than previous techniques, and new representations for lighting design and image-based rendering are considered. Expand
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