Contrast-limited adaptive histogram equalization: speed and effectiveness

Author

Pizer, Stephen M. ; Johnston, R. Eugene ; Ericksen, James P. ; Yankaskas, Bonnie C. ; Muller, Keith E.

Author_Institution

North Carolina Univ., Chapel Hill, NC, USA

fYear

1990

fDate

22-25 May 1990

Firstpage

337

Lastpage

345

Abstract

An experiment intended to evaluate the clinical application of contrast-limited adaptive histogram equalization (CLAHE) to chest computer tomography (CT) images is reported. A machine especially designed to compute CLAHE in a few seconds is discussed. It is shown that CLAHE can be computed in 4 s after 5-s loading time using the specially designed parallel engine made from a few thousand dollars worth of off-the-shelf components. The processing appears to be useful for a wide range of medical images, but the limitations of observer calibration make it impossible to demonstrate such usefulness by agreement experiments

Keywords

computerised picture processing; computerised tomography; medical diagnostic computing; 4 s; 5 s; chest computer tomography; contrast-limited adaptive histogram equalization; medical images; observer calibration; off-the-shelf components; parallel engine; Adaptive equalizers; Biomedical imaging; Clinical diagnosis; Computed tomography; Design methodology; Displays; Histograms; Lesions; Lungs; Medical diagnostic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Visualization in Biomedical Computing, 1990., Proceedings of the First Conference on

Conference_Location

Atlanta, GA

Print_ISBN

0-8186-2039-0

Type

conf

DOI

10.1109/VBC.1990.109340

Filename

109340