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Optical Engineering

Texture synthesis-by-analysis method based on a multiscale early-vision model
Author(s): Javier Portilla; Rafael Fonolla Navarro; Oscar Nestares; Antonio Tabernero
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Paper Abstract

A new texture synthesis-by-analysis method, applying a visually based approach that has some important advantages over more traditional texture modeling and synthesis techniques is introduced. The basis of the method is to encode the textural information by sampling both the power spectrum and the histogram of homogeneously textured images. The spectrum is sampled in a log-polar grid using a pyramid Gabor scheme. The input image is split into a set of 16 Gabor channels (using four spatial frequency levels and four orientations), plus a lowpass residual (LPR). The energy and equivalent bandwidths of each channel, as well as the LPR power spectrum and the histogram, are measured and the latter two are compressed. The synthesis process consists of generating 16 Gabor filtered independent noise signals with spectral centers equal to those of the Gabor filters, whose energy and equivalent bandwidths are calculated to reproduce the measured values. These bandpass signals are mixed into a single image, whose LPR power spectrum and histogram are modified to match the original features. Despite the coarse sampling scheme used, very good results have been achieved with nonstructured textures as well as with some quasiperiodic textures. Besides being applicable to a wide range of textures, the method is robust (stable, fully automatic, linear, and with a fixed code length) and compact (it uses only 69 parameters).

Paper Details

Date Published: 1 August 1996
PDF: 15 pages
Opt. Eng. 35(8) doi: 10.1117/1.600814
Published in: Optical Engineering Volume 35, Issue 8
Show Author Affiliations
Javier Portilla, CSIC Instituto de Optica (Spain)
Rafael Fonolla Navarro, CSIC Instituto de Optica (Spain)
Oscar Nestares, CSIC Instituto de Optica (Spain)
Antonio Tabernero, Univ. Politecnica de Madrid (Spain)

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