Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Vinod K. Beri"'
Publikováno v:
Optics & Laser Technology. 42:70-80
In this paper, we demonstrate that the capabilities of a binary phase-only filter (BPOF) can be enhanced to identify targets irrespective of rotation, scale or the imaging spectral band by utilizing the concept of log-polar transform and image fusion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dffcaa0a18290e92e9fdadb4cef27ff4
https://doi.org/10.1016/j.optlastec.2009.04.018
https://doi.org/10.1016/j.optlastec.2009.04.018
Publikováno v:
Optics and Lasers in Engineering. 47:636-643
This paper reports a morphological phase-only correlation technique based on bit-map representation for recognition of color as well as grey images in a hybrid digital-optical correlation architecture. The color image is decomposed into its R, G and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac1b3dd173e76bee8745d013c37c6328
https://doi.org/10.1016/j.optlaseng.2009.01.006
https://doi.org/10.1016/j.optlaseng.2009.01.006
Publikováno v:
Optics & Laser Technology. 41:120-131
Images of a target in a specific spectral band in general show no correlation with images of the same target in a different spectral band. Hence in a joint transform correlator (JTC) architecture, if the reference and input target are the images capt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::868f280023fb6e85abdd69b54271f534
https://doi.org/10.1016/j.optlastec.2008.05.028
https://doi.org/10.1016/j.optlastec.2008.05.028
Publikováno v:
Optik. 120:62-67
In this paper, we implement a wavelet-modified maximum average correlation height (WaveMACH) filter for recognition of 0–360° out-of-plane rotated targets employing hybrid digital–optical correlator architecture. A chirp function is used with th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d02895b1ef33cf5d5df7bbcdceff5a5e
https://doi.org/10.1016/j.ijleo.2007.01.020
https://doi.org/10.1016/j.ijleo.2007.01.020
Publikováno v:
Optics and Lasers in Engineering. 46:656-665
Filters synthesized with images of a specific spectral band in general fail to recognize targets in a different spectral band. In this paper, we therefore demonstrate the use of the wavelet-modified maximum average correlation height (WaveMACH) filte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08bc7764fae821ce475d7eb84fdc581a
https://doi.org/10.1016/j.optlaseng.2008.04.010
https://doi.org/10.1016/j.optlaseng.2008.04.010
Publikováno v:
Optics and Lasers in Engineering. 46:34-41
In this paper, we report a log-polar transform-based filter for in-plane rotation and scale-invariant target recognition. The log-polar transform is a known space-invariant image representation used in several image vision systems to eliminate the ef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63ce5ac6e5974b0b328d285ebf6e8e73
https://doi.org/10.1016/j.optlaseng.2007.07.006
https://doi.org/10.1016/j.optlaseng.2007.07.006
Publikováno v:
Journal of Optics. 34:164-171
A distortion invariant hybrid digital-optical correlator system is developed for automatic target recognition. A MACH filter is synthesized using a set of training images. Using this MACH filter, rotation invariance from −30° to 30° and scale inv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5eb44b4ece7b75e79ef7aca8a71bd7ca
https://doi.org/10.1007/bf03354787
https://doi.org/10.1007/bf03354787
Publikováno v:
Applied optics. 46(20)
The simulated annealing (SA) algorithm based on entropy optimization is a technique of synthesizing distortion-invariant matched filters capable of discriminating very similar images. The synthesis of rotation-invariant filters using modified SA-base
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b87a5a67b82fe0f0014190687e079aee
https://pubmed.ncbi.nlm.nih.gov/17579686
https://pubmed.ncbi.nlm.nih.gov/17579686
Publikováno v:
SPIE Proceedings.
Detection of rotationally distorted targets is a challenging task in pattern recognition applications. Recently, we proposed and implemented a wavelet-modified maximum average correlation height (MACH) filter for in-plane and out-of-plane rotation in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6ff78224ece91fa42bf68ceb93e3cab
https://doi.org/10.1117/12.720983
https://doi.org/10.1117/12.720983
Publikováno v:
Applied optics. 45(20)
We discuss and implement a wavelet-modified maximum average correlation height (MACH) filter for 0 degrees -360 degrees in-plane rotations in a hybrid digital-optical correlator. Use of a wavelet transform improves the performance of the MACH filter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d6cedb05e739f8db5a86a62a6c391940
https://pubmed.ncbi.nlm.nih.gov/16807591
https://pubmed.ncbi.nlm.nih.gov/16807591