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영상 압축 방법을 적용한 2차원 오디오 부/복호화 방법
김선재(Seonjae Kim),전동산(Dongsan Jun),백승권(Seungkwon Baek),이미숙(Misuk Lee),이태진(Taejin Lee) 한국정보통신학회 2020 한국정보통신학회 종합학술대회 논문집 Vol.24 No.2
미디어 기술의 빠른 발전에 따라 오디오, 비디오의 원본 데이터양이 증가하고 있으며, 이에 따라 고품질, 고효율 압축 기술이 지속적으로 요구되고 있다. MPEG은 음성 및 오디오 압축을 통합한 Unified Speech and Audio Coding (USAC) 표준을 개발하였으며, MPEG과 VCEG은 Joint Video Experts Team(JVET)을 결성해 차세대 비디오 코덱인 Versatile Video Coding (VVC)의 표준화를 최근 완료하였다. 본 논문에서는 VVC의 최신 부호화 기술을 이용해 음성 및 오디오 신호의 2D 부/복호화를 수행하였으며, JVET Common Test Conditions (CTC) 환경에서 1/16 압축 성능을 확인 할 수 있었다. As the amount of original audio and video data is increasing due to the rapid development of media technology, high-quality and high-efficiency coding technologies are required to compress the original data within available network bandwidth. MPEG had developed USAC standard, which integrated voice and audio compression. Recently, MPEG and VCEG formed JVET to standardize versatile video coding (VVC) as the next-generation video codec. In this paper, we propose an approach to encode 2D voice and audio signals with VVC encoding technology. Experimental results show 1/16 compression performance while maintaining the SNR over 30dB under JVET Common Test Conditions (CTC).
김선재(Seonjae Kim),최경환(Kyunghwan Choi) 육군사관학교 화랑대연구소 2021 한국군사학논집 Vol.77 No.3
Blockchain has currently proven to be a representative technology of cryptocurrency such as Bitcoin and Ethereum. In addition, its application in various fields of society such as economy, logistics, and services, and services are already being applied to public institution domestic, foreign companies. In line with this technological trend, blockchain technology is actively being applied to the defense sector. To satisfy this trend the Ministry of National Defense is pushing for smart defense innovation to apply the 4th Industrial Revolution technology to the defense sector. In the Military, facility work goes beyond the meaning of the building and has the characteristics. professional design should be carried out in consideration of wartime and peacetime operational planning and auxiliary duties to show the best combat power. Therefore, plans and initiatives for military facilities must be systematically implemented, and efficient maintenance measures and long-term plans are needed. In this study, we would like to present a plan that can contribute a lot to the construction and maintenance of modernized and advanced defense and military facilities through the integration of military facility work and blockchain technology.