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Design and Optimization of the VLSI Architecture for Discrete Cosine Transform Used in Image Compression

Mario Kovač ; Faculty of Electrical Engineering and Computing, University of Zagreb, Croatia
Mario Žagar ; Faculty of Electrical Engineering and Computing, University of Zagreb, Croatia
N. Ranganathan ; Center for Microelectronics Research, Department of Computer Science and Engineering, University of South Florida, Tampa, USA

Puni tekst: engleski, pdf (6 MB) str. 159-170 preuzimanja: 135* citiraj
APA 6th Edition
Kovač, M., Žagar, M. i Ranganathan, N. (1996). Design and Optimization of the VLSI Architecture for Discrete Cosine Transform Used in Image Compression. Journal of computing and information technology, 4 (3), 159-170. Preuzeto s https://hrcak.srce.hr/150286
MLA 8th Edition
Kovač, Mario, et al. "Design and Optimization of the VLSI Architecture for Discrete Cosine Transform Used in Image Compression." Journal of computing and information technology, vol. 4, br. 3, 1996, str. 159-170. https://hrcak.srce.hr/150286. Citirano 20.02.2020.
Chicago 17th Edition
Kovač, Mario, Mario Žagar i N. Ranganathan. "Design and Optimization of the VLSI Architecture for Discrete Cosine Transform Used in Image Compression." Journal of computing and information technology 4, br. 3 (1996): 159-170. https://hrcak.srce.hr/150286
Harvard
Kovač, M., Žagar, M., i Ranganathan, N. (1996). 'Design and Optimization of the VLSI Architecture for Discrete Cosine Transform Used in Image Compression', Journal of computing and information technology, 4(3), str. 159-170. Preuzeto s: https://hrcak.srce.hr/150286 (Datum pristupa: 20.02.2020.)
Vancouver
Kovač M, Žagar M, Ranganathan N. Design and Optimization of the VLSI Architecture for Discrete Cosine Transform Used in Image Compression. Journal of computing and information technology [Internet]. 1996 [pristupljeno 20.02.2020.];4(3):159-170. Dostupno na: https://hrcak.srce.hr/150286
IEEE
M. Kovač, M. Žagar i N. Ranganathan, "Design and Optimization of the VLSI Architecture for Discrete Cosine Transform Used in Image Compression", Journal of computing and information technology, vol.4, br. 3, str. 159-170, 1996. [Online]. Dostupno na: https://hrcak.srce.hr/150286. [Citirano: 20.02.2020.]

Sažetak
Presentation of images plays a significant role in today's information exchange. Numerous applications that have been introduced in last few years, such as video teleconferencing, HDTV, wirephoto, fax, computer tomography, interactive visualization, multimedia and other, are based on image presentation and distribution. procedures. Disadvantage of using digital images in these applications is enormous amount of space needed for image storage. For example, a 1024 x 1024 color image with 24 bits per pixel requires 3.15 M bytes in the raw form. It is obvious that efficient handling of images is possible only with the introduction of data compression techniques. Data compression is the reduction or elimination of redundancy in order to achieve savings in storage and communication costs. Data compression techniques can be classified in many ways, but the most common classification defines two basic categories: lossless and lossy. In lossless methods, the exact original data is recovered while in lossy methods only a close approximation of the original data can be obtained. Lossless methods are used in applications where no loss of information is allowed, such as text compression, medical imaging, and similar. Lossy methods are mostly used in image and audio compression where designers or users can select the quality of the restored data. Disadvantage of lossless methods is that the compression ratio is relatively small and runs between 3:1 and 4:1, while lossy methods can achieve compression ratios of up to 100:1. Even with compression ratios of that magnitude, due to the large volume of data, real-time operation of image using applications requires development of very high speed implementation cf image compression/decompression techniques.

Ključne riječi
DCT; data compression; VLSI; computer architecture; algorithms; multimedia

Hrčak ID: 150286

URI
https://hrcak.srce.hr/150286

Posjeta: 183 *