The application of the Discrete Cosine Transform to image data compression is presented. In particular a fast algorithm is described for an efficient implementation of the transform. Both zonal and threshold sampling methods are considered and their performance is evaluated. Also a comparison of the performance of the Discrete Cosine Transform and the Fast Fourier Transform is outlined. Quantitative and qualitative results are presented for evaluating the various alternatives for the application of the Disscrete Cosine Transform. The results have shown that a convenient choice is the threshold sampling method applied to transformed blocks of size ranging from 8 × 8 to 32 × 32.

Image data compression by the discrete cosine transform / Cappellini, Vito; DEL RE, Enrico. - In: MATHEMATICS AND COMPUTERS IN SIMULATION. - ISSN 0378-4754. - STAMPA. - 27:(1985), pp. 599-608. [10.1016/0378-4754(85)90077-1]

Image data compression by the discrete cosine transform

CAPPELLINI, VITO;DEL RE, ENRICO
1985

Abstract

The application of the Discrete Cosine Transform to image data compression is presented. In particular a fast algorithm is described for an efficient implementation of the transform. Both zonal and threshold sampling methods are considered and their performance is evaluated. Also a comparison of the performance of the Discrete Cosine Transform and the Fast Fourier Transform is outlined. Quantitative and qualitative results are presented for evaluating the various alternatives for the application of the Disscrete Cosine Transform. The results have shown that a convenient choice is the threshold sampling method applied to transformed blocks of size ranging from 8 × 8 to 32 × 32.
1985
27
599
608
Cappellini, Vito; DEL RE, Enrico
File in questo prodotto:
File Dimensione Formato  
Image data compression by the discrete cosine transform 1.pdf

accesso aperto

Tipologia: Pdf editoriale (Version of record)
Licenza: Open Access
Dimensione 6.62 MB
Formato Adobe PDF
6.62 MB Adobe PDF
Image data compression by the discrete cosine transform 2.pdf

accesso aperto

Tipologia: Pdf editoriale (Version of record)
Licenza: Open Access
Dimensione 4.67 MB
Formato Adobe PDF
4.67 MB Adobe PDF

I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/360672
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? 0
social impact