All-frequency shadows using non-linear wavelet lighting approximation.
Ren NgRavi RamamoorthiPat HanrahanPublished in: ACM Trans. Graph. (2003)
Keyphrases
- cast shadows
- bandpass
- viewpoint
- low frequency
- wavelet transform
- wavelet coefficients
- light source
- approximation algorithms
- multiscale
- lighting conditions
- closed form
- error bounds
- lighting direction
- multiresolution
- wavelet analysis
- shape from shading
- secret image sharing
- lambertian surface
- multiresolution analysis
- wavelet transformation
- inverse problems in image processing
- neural network
- data structure
- approximation error
- low pass
- illumination conditions
- wavelet domain
- single image
- high frequency