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한국 육군의 다영역작전 적용 방안 연구: 공지전투와 비교
장재규(Jang Jaekyu) 육군사관학교 화랑대연구소 2021 한국군사학논집 Vol.77 No.3
In the 1970s, the U.S. Army succeeded in military innovation by establishing a new concept of ALB and proved the result of the innovation through Gulf War. At that time, Korean Army applied U.S. Army"s ALB to suit the Korean situation, and ALB was established as the basic concept of the Korean Army. U.S. has recently pushed for efforts to develop new concepts to cope with competition between major powers due to China"s rise and Russia"s threat, and U.S. Army"s MDO is one of the products of this effort. The purpose of this paper is to examine the feasibility and direction of application of the Korean Army to U.S. Army"s MDO. As a result, the paper raises four questions as an extension of Korean Army"s application of ALB. First, why and how did Korean Army apply the U.S. Army"s ALB in the 1980s? Second, what is the difference between U.S. Army"s MDO and ALB? Third, should the Korean Army apply U.S. Army"s MDO? Fourth, if U.S. Army had to apply MDO, how would it apply? Therefore, the composition of the paper examines the lessons learned from the past experiences of Korean Army in Chapter 2 and evaluates the implications of Korean Army in comparing U.S. Army"s MDO to Korean Army in Chapter 3. Chapter 4 reviews the feasibility and direction of Korean Army"s application of MDO based on five justifiable arguments for Korean military innovation and six basic principles of military innovation.
상위깊이의 Sub-CU 부호화 정보를 이용한 HEVC의 고속 PU 결정 기법
장재규(Jae-Kyu Jang),최호열(Ho-Youl Choi),김재곤(Jae-Gon Kim) 한국방송·미디어공학회 2015 방송공학회논문지 Vol.20 No.2
HEVC (High Efficiency Video Coding) achieves high coding efficiency by employing a quadtree-based coding unit (CU) block partitioning structure and various prediction units (PUs), and the determination of the best CU partition structure and the best PU mode based on rate-distortion (R-D) cost. However, the computation complexity of encoding also dramatically increases. In this paper, to reduce such encoding computational complexity, we propose three fast PU mode decision methods based on encoding information of upper depth as follows. In the first method, the search of PU mode of the current CU is early terminated based on the sub-CBF (Coded Block Flag) of upper depth. In the second method, the search of intra prediction modes of PU in the current CU is skipped based on the sub-Intra R-D cost of upper depth. In the last method, the search of intra prediction modes of PU in the lower depth’s CUs is skipped based on the sub-CBF of the current depth’s CU. Experimental results show that the three proposed methods reduce the computational complexity of HM 14.0 to 31.4%, 2.5%, and 23.4% with BD-rate increase of 1.2%, 0.11%, and 0.9%, respectively. The three methods can be applied in a combined way to be applied to both of inter prediction and intra prediction, which results in the complexity reduction of 34.2% with 1.9% BD-rate increase.