Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Partial rotation-invariant pattern matching and face recognition with a joint transform correlator

Not Accessible

Your library or personal account may give you access

Abstract

We describe the circular-harmonic (CH) image CHmr, which is based on CH components for rotationally invariant pattern recognition. CH components of the order m, derived from an image in polar coordinates, are used to form a two-dimensional space together with the radial variable r. Filtering the CHmr image leads to a reference image with some rotational invariance. For a narrow-pass filter we have a single CH component with full rotation invariance; for an all-pass filter we have the original image with no rotational invariance; for a low-pass filter we form a reference image containing multiple circular harmonics with partial rotation invariance. Results of numerical simulations and optical experiments with a joint transform correlator are given that illustrate partial-rotation-invariant recognition for human face images.

© 1997 Optical Society of America

Full Article  |  PDF Article
More Like This
Nonlinear rotation-invariant pattern recognition by use of the optical morphological correlation

Pascuala Garcia-Martinez, Carlos Ferreira, Javier Garcia, and Henri H. Arsenault
Appl. Opt. 39(5) 776-781 (2000)

Rotation invariant color pattern recognition by use of a three-dimensional Fourier transform

Oscar Gualdrón, Josep Nicolás, Juan Campos, and Maria J. Yzuel
Appl. Opt. 42(8) 1434-1440 (2003)

Illumination-invariant pattern recognition with joint-transform-correlator-based morphological correlation

Shuqun Zhang and Mohammad A. Karim
Appl. Opt. 38(35) 7228-7237 (1999)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (14)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (5)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (5)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved