Abstract
The purpose of the study was to evaluate the effects of lossy compression on grayscale ultrasound images to determine how much compression can be applied while still maintaining images that are acceptable for diagnostic purposes. The study considered how the acquisition technique (video frame-grabber versus directly acquired in digital form) influences how much compression can be applied. For directly acquired digital images, the study considered how text (that is burned into the image) affects the compressibility of the image. The lossy compression techniques that were considered include JPEG and a Wavelet algorithm using set partitioning in hierarchical trees (SPIHT).
Key Words: lossy compression, JPEG, wavelet compression, ultrasonography, Medical Images, picture archiving and communication systems, teleradiology
Full Text
The Full Text of this article is available as a PDF (2.0 MB).
References
- 1.Persons KR, Palisson P, Manduca A, et al. An analytical look at the effects of compression on medical images. J Digit Imaging. 1997;10(suppl 1):60–66. doi: 10.1007/BF03168659. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 2.Wallace GK. The JPEG still picture compression standard. Comm ACM. 1991;34:30–44. doi: 10.1145/103085.103089. [DOI] [Google Scholar]
- 3.Rioul O, Vetterli M. Wavelets and signal processing. IEEE Signal Process Mag. 1991;5:14–38. doi: 10.1109/79.91217. [DOI] [Google Scholar]
- 4.Villasenor J, Belzer B, Liao J. Wavelet filter evaluation for image compression. IEEE Trans Image Proc. 1995;4:1053–1060. doi: 10.1109/83.403412. [DOI] [PubMed] [Google Scholar]
- 5.Erickson BJ, Manduca A, Palisson P, et al. Wavelet compression of medical images. Radiology. 1998;206:599–607. doi: 10.1148/radiology.206.3.9494473. [DOI] [PubMed] [Google Scholar]
- 6.Manduca A: Compressing images with wavelet/subband coding. IEEE Engineer Med Biol 0739-5175: 639–646, Sept/Oct 1995
- 7.Persons KR, Palisson PM, Manduca A, et al. JPEG/ wavelet ultrasound compression study. SPIE Med Imaging. 1999;366–33:232–247. [Google Scholar]