We propose a simple data hiding algorithm, the one's complement substitution process, for spatial-domain still images. Different from the LSBs substitution and optimal pixel adjustment process (OPAP), our method l...
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ISBN:
(纸本)9781617827020
We propose a simple data hiding algorithm, the one's complement substitution process, for spatial-domain still images. Different from the LSBs substitution and optimal pixel adjustment process (OPAP), our method limits the distortion of each pixel within 2 bits while 3 bits (k=3) or 4 bits (k=4) of information are to embed/replace the original 3 or 4 LSBs, at the cost of one extra bit (k=3) or two bits (k=4) for recovering if the one's complement process has been performed. Experimental results show the proposed method improves in average 10.2% (for k=3) and 27.19% (for k=4), in PSNR respectively, as compared with the OPAP, for the benchmark images.
This work develops a novel virtual production control system (VPCS), which is allocated on a manufacturer side to adjust production pace of a supplier using a short-term demand plan for reducing inventory level. In ad...
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The hydrogen passivation is adopted to enhance the performance of poly-Si crystallized by YAG laser annealing(LA polySi).The effects of passivation time,passivation power and passivation temperature on the hall mobili...
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The hydrogen passivation is adopted to enhance the performance of poly-Si crystallized by YAG laser annealing(LA polySi).The effects of passivation time,passivation power and passivation temperature on the hall mobility of the LA poly-Si are investigated and the mechanism of the hydrogen passivation is preliminarily *** is found that the effect of the hydrogen passivation on the qulity of YAG laser annealed poly-Si is also correlated with the deposition method and the defect type in it.
In classical data warehouses (DWH), classification of values takes place in a sharp manner, because of this true values cannot be measured and smooth transition between classes does not occur. In this paper, a fuzzy d...
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ISBN:
(纸本)9781424465378;9780769540054
In classical data warehouses (DWH), classification of values takes place in a sharp manner, because of this true values cannot be measured and smooth transition between classes does not occur. In this paper, a fuzzy data warehouse (FDWH) modeling approach, which allows integration of fuzzy concepts without affecting the core of a DWH is presented. This is accomplished through the addition of a meta-table structure, which enables integration of fuzzy concepts on dimensions and facts, while preserving the time-invariability of the DWH and allowing analysis of data both sharp and fuzzy. A comparison to existing approaches for integrating fuzzy concepts in DWH is presented. Guidelines for modeling the fuzzy meta-tables and a meta-model for the FDWH are also outlined in this paper. The use of the proposed approach is demonstrated by a retail company example. Finally, a comparison of fuzzy and classical data warehousing approaches is presented.
We study the capacity scaling laws for the cognitive network that consists of the primary hybrid network (PhN) and secondary ad hoc network (SaN). PhN is further comprised of an ad hoc network and a base station based...
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This paper proposes validated control system design method based on verified numerical computation. The proposed method designs a controller and validates it using verified numerical computation. We also propose a met...
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ISBN:
(纸本)9781424476428
This paper proposes validated control system design method based on verified numerical computation. The proposed method designs a controller and validates it using verified numerical computation. We also propose a method to find the numerically most design-specification satisfied controller quickly by using multiple-precision arithmetic. And, this paper applies a proposed method to pole assignment problem.
The paper describes the implementation of a watermarking embedding and retrieval technique using a conceptual approach of bio-inspired algorithm e.g. ant colony optimization (ACO). The essential construct of ACO is ph...
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The problem of protecting the GPS signal from interference is addressed. The power inversion algorithm (PI) used in GPS adaptive null-steering arrays is detailed presented. The algorithm based on LCMV rule, which simp...
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This study was mainly about genetic algorithms of feature selection. The features adopted by this paper include CCM and DBPSP for the relationship between color and texture, CHKM for the color information of an image....
This study was mainly about genetic algorithms of feature selection. The features adopted by this paper include CCM and DBPSP for the relationship between color and texture, CHKM for the color information of an image. The genetic algorithm of this study is implemented by MatLab program. The genetic algorithm optimization and searching technology adopted mechanics of genes and natural selection, and the algorithm implementation steps are: population initialization, fitness functions, selection, crossover, mutation, iteration and evolution. Feature selections used here are Sequential Forward Selection (SFS), Sequential Backward Selection (SBS), and the genetic algorithm-based feature selection used in this essay respectively. This study was analyzed and compared the result of the experiment respectively. The experiment was carried out for comparing the image retrieval accuracy, feature selection and computing time of image retrieval.
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