Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Won-gyum Kim"'
Robust Authentication Analysis of Copyright Images through Deep Hashing Models with Self-supervision
Publikováno v:
Journal of Universal Computer Science, Vol 29, Iss 8, Pp 938-958 (2023)
The increased usage of the internet and ICT has posed a significant challenge to protect copyrighted content due to advanced image forgery techniques that make image authentication extremely difficult. The aim of this paper is to establish a binary c
Externí odkaz:
https://doaj.org/article/e2e18dc2474d47e9bb4b04a9af78d46a
Autor:
Jae-Won Lie, Won-Gyum Kim
Publikováno v:
Journal of the Korea Entertainment Industry Association. 15:1-13
Publikováno v:
Journal of Convergence Information Technology. 8:742-750
Document plagiarism means the unauthorized use of the original document of another author without recognition of the source. With the development of the Internet, the volume of digital information available and easily accessible has increased massive
Publikováno v:
Progress In Electromagnetics Research. 136:175-193
In passive millimeter-wave imaging systems used indoors, the radiometric temperature contrast is barely enough for coarse object detection, being usually insu-cient for recognition due to the absence of cold sky. The image contrast results from a com
Publikováno v:
Progress In Electromagnetics Research. 125:295-309
A loss of large aperture quasi-optics which consist of a lens and a feed antenna is flrstly measured using a radiometer receiver via the modifled reference control method for a W-band imaging radiometer system. The quasi-optical loss is mainly decide
Publikováno v:
Microwave and Optical Technology Letters. 53:2153-2157
This article presents the planar ultra-wide band (UWB) monopole antenna design and its impedance bandwidth improvement.Intially, a planar rectangualr monopole antenna is designed for UWB application. To enhance the impedance bandwidth of the antenna,
Publikováno v:
Progress In Electromagnetics Research. 103:57-65
An advanced aspheric and asymmetric large aperture dielectric lens antenna is proposed flrstly here for high resolution at W- band frequency. Large aperture and aspheric lens provides minimum focusing error and high resolution in millimeter wave quas
Autor:
Won-gyum Kim, Heungkyu Lee
Publikováno v:
Signal Processing. 89:2385-2399
In this paper, we propose multimodal biometric image watermarking scheme through a two-stage integrity verification method using the hidden thumbnail feature vectors for safe authentication of multimodal biometrics data, face and fingerprint, respect
Publikováno v:
Key Engineering Materials. :1301-1305
This paper presents a new image fingerprinting scheme which embeds a multi-bits fingerprinting code and is robust against the geometric attack such as rotation, scaling and translation. We construct a 64 bits fingerprinting code and embed into wavele
Publikováno v:
Microwave and Optical Technology Letters. 52:1221-1223
Modification in tapered dielectric rod waveguide antenna is achieved by the implementation of step change in width in metallic waveguide transition. The proposed antenna has circular symmetric radiation pattern and gain about 15.3 dB with improved re