Abstract The K-SVD algorithm aims to find an adaptive dictionary for a set of signals by using the sparse representation optimization and constrained singular value decomposition. In this paper, firstly, the original K-SVD algorithm, as well as some sparse representation algorithms including $$\ell _{0}$$ -norm OMP and $$\ell _{1}$$ -norm Lasso were reviewed. Secondly, the revised Lasso algorithm was embedded into the K-SVD process and a new different K-SVD algorithms with $$\ell _{1}$$ -norm Lasso embedded in (RL-K-SVD algrithm) was established. Finally, extensive experiments had been completed on necessary parameters determination, further on the performance compare of recovery error and recognition for the original K-SVD and RL-K-SVD algorithms. The results indicate that within a certain scope of parameter settings, the RL-K-SVD algorithm performs better on image recognition than K-SVD; the time cost for training sample number is lower for RL-K-SVD in case that the sample number is increased to a certain extend.


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    Titel :

    Evaluation of K-SVD Embedded with Modified $$\ell _{1}$$ -Norm Sparse Representation Algorithm


    Beteiligte:
    Wang, Meixi (Autor:in) / Liu, Jingjing (Autor:in) / Ma, Shiwei (Autor:in) / Liu, Wanquan (Autor:in)


    Erscheinungsdatum :

    2017-01-01


    Format / Umfang :

    10 pages





    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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