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The frequency resource is limited due to multiple operators and various services. It is important to reduce intra- operator interference with multiple operators that are occupied same frequency band. Sharing radio access network technology is one of promising solution for intra-operator interference. However, there is a problem that the coverage is reduced according to the handover parameter when...
This paper presents a low-light video restoration algorithm using similar patches among temporally adjacent frames. The proposed artifact-free low-light video restoration algorithm consists of three steps: 1) brightness enhancement using similar patches among temporally adjacent frames and adaptive accumulation; 2) improved color assignment to reduce color distortion; and 3) image fusion for saturation...
This paper presents a robust sub-pixel image registration algorithm by analyzing intensity variation of local features. The proposed method consists of three steps: i) global image registration using features analysis, ii) local image registration using phase correlation, and iii) sub-pixel image translation. It can register two images without mis-registration artifacts because of the accurate estimation...
This paper presents a video completion algorithm using block matching for video stabilization. In order to fill in missing pixels, the proposed algorithm consists of three steps: i) mosaicking for covering the missing static, planar regions, ii) estimation of local motion vectors using the hierarchical Lucas-Kanade optical flow method, and iii) selection of the most similar patch in both spatial and...
In this paper, an adaptive video restoration method is presented for removing spatially-varying blur using truncated constrained least-squared (TCLS) filter. The proposed method consists of two modules: i) spatially-varying blur estimation based on blur map optimization in temporally adjacent frames and ii) adaptive image restoration using TCLS filter according to the estimated blur parameters. The...
As senior population increases, various healthcare devices and services are developed such as fall detection device, home hypertension management service, and etc. However, to vitalize healthcare devices and services market, standardization for interoperability between device and service must precede. To achieve the standardization goal, the IEEE 11073 Personal Health Device (PHD) group has been standardized...
As the number of seniors with chronic disease increases, the need of home healthcare settop-box is increased to manage their chronic disease in their home environment. Using the home healthcare settop-box, the patients can regularly check their health data, and finally, it can lead the decrease of medical expenses. For the home healthcare settop-box, the most important factor is the standard compatibility,...
As transformed to aging society, many personal devices for healthcare have recently been developed. According to the increase of individual development of health devices, the ISO/IEEE 11073 PHD standard is established for gathering health measurement data. But many existing healthcare devices are not standardized. In this paper, we propose implementation model of standardization for existing healthcare...
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