Conference proceeding
Color analysis of the human airway wall
Proceedings of SPIE, Vol.4683(1), pp.341-351
Medical Imaging 2002: Physiology and Function from Multidimensional Images
04/22/2002
DOI: 10.1117/12.463600
Abstract
A bronchoscope can be used to examine the mucosal surface of the airways for abnormalities associated with a variety of lung diseases. The diagnosis of these abnormalities through the process of bronchoscopy is based, in part, on changes in airway wall color. Therefore it is important to characterize the normal color inside the airways. We propose a standardized method to calibrate the bronchoscopic imaging system and to tabulate the normal colors of the airway. Our imaging system consists of a Pentium PC and video frame grabber, coupled with a true color bronchoscope. The calibration procedure uses 24 standard color patches. Images of these color patches at three different distances (1, 1.5, and 2 cm) were acquired using the bronchoscope in a darkened room, to assess repeatability and sensitivity to illumination. The images from the bronchoscope are in a device-dependent Red-Green-Blue (RGB) color space, which was converted to a tri-stimulus image and then into a device-independent color space sRGB image by a fixed polynomial transformation. Images were acquired from five normal human volunteer subjects, two cystic fibrosis (CF) patients and one normal heavy smoker subject. The hue and saturation values of regions within the normal airway were tabulated and these values were compared with the values obtained from regions within the airways of the CF patients and the normal heavy smoker. Repeated measurements of the same region in the airways showed no measurable change in hue or saturation.
Details
- Title: Subtitle
- Color analysis of the human airway wall
- Creators
- Deepa Gopalakrishnan - University of IowaGeoffrey McLennan - University of IowaMartin Donnelley - University of IowaAngela Delsing - University of IowaMelissa Suter - University of IowaDawn Flaherty - University of IowaJoseph Zabner - University of IowaEric A Hoffman - University of IowaJoseph M Reinhardt - University of Iowa
- Resource Type
- Conference proceeding
- Publication Details
- Proceedings of SPIE, Vol.4683(1), pp.341-351
- Conference
- Medical Imaging 2002: Physiology and Function from Multidimensional Images
- DOI
- 10.1117/12.463600
- ISSN
- 0277-786X
- Language
- English
- Date published
- 04/22/2002
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Internal Medicine; Pulmonary, Critical Care, and Occupational Medicine; Radiology
- Record Identifier
- 9984196983702771
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