A new quantization algorithm for a wavelet compression scheme of coronary angiograms

A. Bezerianos, A. Munteanu, P. Cristea, D. Alexopoulos

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

New methods for image compression which are able to store and retrieve efficiently the images produced by a digital angiographic unit are needed for clinical use. Currently discrete cosine transform (DCT) based compression schemes (i.e. JPEG, MPEG) generate unacceptable block artefacts in coronary angiograms at high compression ratios, because of the block coefficients quantization. We propose a wavelet compression algorithm that overcomes fundamentally this drawback. Using a set of 40 coronary angiograms, we evaluated the method by analyzing several image quality factors: peak signal to noise ratio, compression ratio, maximum absolute difference and mean difference of gray levels and subjective evaluation. At the same compression ratio, the proposed technique outperforms the JPEG method in image quality preservation.

Original languageEnglish (US)
Title of host publicationComputers in Cardiology
Pages569-572
Number of pages4
Volume0
Edition0
StatePublished - 1996
Externally publishedYes

Fingerprint

Image quality
Angiography
Discrete cosine transforms
Image compression
Data Compression
Signal to noise ratio
Signal-To-Noise Ratio
Artifacts
monomethoxypolyethylene glycol

ASJC Scopus subject areas

  • Software
  • Cardiology and Cardiovascular Medicine

Cite this

Bezerianos, A., Munteanu, A., Cristea, P., & Alexopoulos, D. (1996). A new quantization algorithm for a wavelet compression scheme of coronary angiograms. In Computers in Cardiology (0 ed., Vol. 0, pp. 569-572)

A new quantization algorithm for a wavelet compression scheme of coronary angiograms. / Bezerianos, A.; Munteanu, A.; Cristea, P.; Alexopoulos, D.

Computers in Cardiology. Vol. 0 0. ed. 1996. p. 569-572.

Research output: Chapter in Book/Report/Conference proceedingChapter

Bezerianos, A, Munteanu, A, Cristea, P & Alexopoulos, D 1996, A new quantization algorithm for a wavelet compression scheme of coronary angiograms. in Computers in Cardiology. 0 edn, vol. 0, pp. 569-572.
Bezerianos A, Munteanu A, Cristea P, Alexopoulos D. A new quantization algorithm for a wavelet compression scheme of coronary angiograms. In Computers in Cardiology. 0 ed. Vol. 0. 1996. p. 569-572
Bezerianos, A. ; Munteanu, A. ; Cristea, P. ; Alexopoulos, D. / A new quantization algorithm for a wavelet compression scheme of coronary angiograms. Computers in Cardiology. Vol. 0 0. ed. 1996. pp. 569-572
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