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Quality of Compressed Medical Images

Journal of Digital Imaging volume 20, Article number: 149 (2007) Cite this article

Abstract

Previous studies have shown that Joint Photographic Experts Group (JPEG) 2000 compression is better than JPEG at higher compression ratio levels. However, some findings revealed that this is not valid at lower levels. In this study, the qualities of compressed medical images in these ratio areas (∼20), including computed radiography, computed tomography head and body, mammographic, and magnetic resonance T1 and T2 images, were estimated using both a pixel-based (peak signal to noise ratio) and two 8 × 8 window-based [Q index and Moran peak ratio (MPR)] metrics. To diminish the effects of blocking artifacts from JPEG, jump windows were used in both window-based metrics. Comparing the image quality indices between jump and sliding windows, the results showed that blocking artifacts were produced from JPEG compression, even at low compression ratios. However, even after the blocking artifacts were omitted in JPEG compressed images, JPEG2000 outperformed JPEG at low compression levels. We found in this study that the image contrast and the average gray level play important roles in image compression and quality evaluation. There were drawbacks in all metrics that we used. In the future, the image gray level and contrast effect should be considered in developing new objective metrics.

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References

  1. Huang HK: PACS—Picture Archiving and Communication Systems in Biomedical Imaging. New York: VCH Publishers, 1996

    Google Scholar 

  2. Przelaskowski A: Vector quality measure of lossy compressed medical images. Comput Biol Med 34:193–207, 2004

    PubMed  Article  Google Scholar 

  3. Wong S, Zaremba L, Gooden D, Huang HK: Radiologic image compression—a review. Proc IEEE 83:194–219, 1995

    Article  Google Scholar 

  4. Chen ZD, Chang RF, Kuo WJ: Adaptive predictive multiplicative autoregressive model for medical image compression. IEEE Trans Med Imaging 18:181–184, 1999

    PubMed  Article  CAS  Google Scholar 

  5. Chen TJ, Chuang KS, Wu J, Chen SC, Hwang IM, Jan ML: Quality degradation in lossy wavelet image compression. J Digit Imaging 16:210–215, 2003

    PubMed  Article  Google Scholar 

  6. Erickson BJ: Irreversible compression of medical images. J Digit Imaging 15:5–14, 2002

    PubMed  Article  Google Scholar 

  7. Seeram E: Irreversible compression in digital radiology. A literature review. Radiography 12:45–59, 2006

    Article  Google Scholar 

  8. Siddiqui KM, Johnson JP, Reiner BI, Siegel EL: Discrete cosine transform JPEG compression vs. 2D JPEG2000 compression: JNDmetrix visual discrimination model image quality analysis, Proceedings of SPIE, vol. 5748, Medical Imaging: PACS and Imaging Informatics, 2005, pp 202–207

  9. Eikelboom RH, Yogesan K, Barry CJ, Constable IJ, Tay-Kearney ML, Jitskaia L, House PH: Methods and limits of digital image compression of retinal images for telemedicine. Invest Ophthalmol Vis Sci 41:1916–1924, 2000

    PubMed  CAS  Google Scholar 

  10. Brennecke R, Burgel U, Rippin G, Post F, Rupprecht HJ, Meyer J: Comparison of image compression viability for lossy and lossless JPEG and Wavelet data reduction in coronary angiography. Int J Card Imaging 17:1–12, 2001

    Article  CAS  Google Scholar 

  11. Iyriboz TA, Zukoski MJ, Hopper KD, Stagg PL: A comparison of wavelet and Joint Photographic Experts Group lossy compression methods applied to medical images. J Digit Imaging 12(2 Suppl 1):14–17, 1999

    PubMed  CAS  Article  Google Scholar 

  12. Ricke J, Maass P, Lopez Hanninen E, Liebig T, Amthauer H, Stroszczynski C, Schauer W, Boskamp T, Wolf M: Wavelet versus JPEG (Joint Photographic Expert Group) and fractal compression. Impact on the detection of low-contrast details in computed radiographs. Invest Radiol 33:456–463, 1998

    PubMed  Article  CAS  Google Scholar 

  13. Hui OT, Besar R: Medical image compression using JPEG2000 and JPEG: a comparison study. J Mech Med Biol 2:313–328, 2002

    Article  Google Scholar 

  14. Janhom A, van der Stelt PF, Sanderink GCH: A comparison of two compression algorithms and the detection of caries. Dentomaxillofacial Radiol 31:257–263, 2000

    Article  Google Scholar 

  15. Slone RM, Foos DH, Whiting BR, Muka E, Rubin DA, Pilgram TK, Kohm KS, Young SS, Ho P, Hendrickson DD: Assessment of visually lossless irreversible image compression: comparison of three methods by using an image-comparison workstation. Radiology 215:543–553, 2000

    PubMed  CAS  Google Scholar 

  16. Li F, Sone S, Takashima S, Kiyono K, Yang ZG, Hasegawa M, Kawakami S, Saito A, Hanamura K, Asakura K: Effects of JPEG and wavelet compression of spiral low-dose CT images on detection of small lung cancers. Acta Radiol 42:156–160, 2001

    PubMed  Article  CAS  Google Scholar 

  17. Przelaskowski A: Hybrid vector measures of compressed medical images, SPIE Symposium Medical Imaging: Image perception and performance, http://www.ire.pw.edu.pl/~arturp/Publikacje/ap_HVM.pdf, 2000

  18. Kalyanpur A, Neklesa VP, Taylor CR, Daftary AR, Brink AR: Evaluation of JPEG and wavelet compression of body CT images for direct digital teleradiologic transmission. Radiology 217:772–779, 2000

    PubMed  CAS  Google Scholar 

  19. Ebrahimi F, Chamik M, Winkler S: JPEG vs. JPEG2000: an objective comparison of image encoding quality. Proc SPIE Appl Digit Image Proc 5558:300–308, 2004

    Google Scholar 

  20. Wang Z, Bovic AC: A universal image quality index. IEEE Signal Process Lett 3:81–84, 2002

    Article  Google Scholar 

  21. Chen TJ, Chuang KS, Wu J, Chen SC, Hwang IM, Jan ML: A novel image quality index using Moran I statistics. Phys Med Biol 48:N131–N137, 2003

    PubMed  Article  Google Scholar 

  22. Wang Z, Bovik AC, Evans BL: Blind measurement of blocking artifacts in images. IEEE Int Conf Image Proc 3:981–984, 2000

    Google Scholar 

  23. Chen TJ, Chuang KS, Chiang YC, Chang JH, Liu RS: A statistical method for evaluation quality of medical images: case study in bit discarding and image compression. Comput Med Imaging Graph 28:167–175, 2004

    PubMed  Article  Google Scholar 

  24. Chen TJ, Chuang KS, Chang JH, Shiao YH, Chuang CC: A blurring index for medical images. J Digit Imaging 19:118–125, 2006 DOI: http://dx.doi.org/10.1007/s10278-005-8736-y, 2005

    Google Scholar 

  25. Chuang KS, Huang HK: Assessment of noise in a digital image using the join-count statistic and Moran test. Phys Med Biol 37:357–369, 1992

    PubMed  Article  CAS  Google Scholar 

  26. Cliff AD, Ord JK: Spatial process: models and applications. London: Pion, 1981

    Google Scholar 

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Acknowledgements

The authors would like to thank Mr. Josiah Yoder of Purdue University, Mr. Thomas Leonard of Hillsdale College, and Dr. Maria N. Cusipag of Shu-Zen College of Medicine and Management for their help in editing this paper. This work has been supported by two research grants in Taiwan: NSC 95-2314-B-471-001 from the National Science Council and SZM095301038 from Shu-Zen College of Medicine and Management.

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Affiliations

  1. Department of Medical Imaging Technology, Shu-Zen College of Medicine and Management, Luju Shiang, Kaohsiung, 82144, Taiwan

    Ya-Hui Shiao, Tzong-Jer Chen & Chun-Chao Chuang

  2. Department of Nuclear Science, National Tsing-Hua University, Hsinchu, Taiwan

    Keh-Shih Chuang

  3. Department of Radiological Technology, Central Taiwan University of Science and Technology, Taichung, Taiwan

    Cheng-Hsun Lin

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  1. Ya-Hui Shiao
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  2. Tzong-Jer Chen
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  3. Keh-Shih Chuang
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  4. Cheng-Hsun Lin
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  5. Chun-Chao Chuang
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Correspondence to Tzong-Jer Chen.

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Shiao, YH., Chen, TJ., Chuang, KS. et al. Quality of Compressed Medical Images. J Digit Imaging 20, 149 (2007). https://doi.org/10.1007/s10278-007-9013-z

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  • DOI: https://doi.org/10.1007/s10278-007-9013-z

Key words

  • Image quality
  • JPEG
  • JPEG2000
  • image compression