A Novel Design of Regular Cosine-Modulated Filter Banks for Image Coding
| العنوان: | A Novel Design of Regular Cosine-Modulated Filter Banks for Image Coding |
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| المؤلفون: | Kenji Ohue, Toshiyuki Uto, Masaaki Ikehara |
| المصدر: | IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. :1633-1641 |
| بيانات النشر: | Institute of Electronics, Information and Communications Engineers (IEICE), 2009. |
| سنة النشر: | 2009 |
| مصطلحات موضوعية: | Mathematical optimization, Computational complexity theory, Applied Mathematics, Residual, Computer Graphics and Computer-Aided Design, Signal Processing, Trigonometric functions, Prototype filter, Electrical and Electronic Engineering, Algorithm, Transform coding, Linear phase, Coding (social sciences), Mathematics, Image compression |
| الوصف: | This paper describes a design method of cosine-modulated filter banks (CMFB's) for an efficient coding of images. Whereas the CMFB has advantages of low design and implementation cost, subband filters of the CMFB do not have linear phase property. This prevents from employing a symmetric extension in transformation process, and leads to a degradation of the image compression performance. However, a recently proposed smooth extension alleviates the problem with CMFB's. As a result, well-designed CMFB's can be expected to be good candidates for a transform block in image compression applications. In this paper, we present a novel design approach of regular CMFB's. After introducing a regularity constraint on lattice parameters of a prototype filter in paraunitary (PU) CMFB's, we also derive a regularity condition for perfect reconstruction (PR) CMFB's. Finally, we design regular 8-channel PUCMFB and PRCMFB by an unconstrained optimization of residual lattice parameters, and several simulation results for test images are compared with various transforms for evaluating the proposed image coder based on the CMFB's with one degree of regularity. In addition, we show a computational complexity of the designed CMFB's. |
| تدمد: | 1745-1337 0916-8508 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::8d2b060b0d7983a9b81e564247e576fb https://doi.org/10.1587/transfun.e92.a.1633 |
| رقم الأكسشن: | edsair.doi...........8d2b060b0d7983a9b81e564247e576fb |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17451337 09168508 |
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