A High Resolution Image Digitizer For Biomedical Applications

Joao G. M. Goncalves; C. J. Taylor

doi:10.1117/12.968723

27 June 1988 A High Resolution Image Digitizer For Biomedical Applications

Joao G. M. Goncalves, C. J. Taylor

Proceedings Volume 0914, Medical Imaging II; (1988) https://doi.org/10.1117/12.968723
Event: Medical Imaging II, 1988, Newport Beach, CA, United States

Abstract

A broad area of applications for processing and analysis of medical images can be found with images that are not computer generated, such as radiographic or cytological images. Success when processing and analysing these images depends very much on the quality of the image acquisition system. An image acquisition system based on a CCD linear image sensor was built for the acquisition of chest radiographs. CCDs provide a wide dynamic range and very high spatial resolution, and are well suited for high quality image acquisition systems. These abilities are however reduced considering the variations between the output characteristics of different sensing elements. The digitizer that was built has specially designed hardware for real-time correction of these variations. The digitizer is based on a microcomputer that manages the overall system operations (e.g., calibration, image acquisition, scanning control, light control, fault detection, etc...) and programs the real-time correction hardware. The combination of the CCD image sensor and the correction hardware proved to be quite powerful and effective, taking into account the measurements that were made. The paper discusses the use of CCD image sensors and their characteristics, and describes in detail the algorithms and hardware that were used. It finally points out prospective applications for these type of digitizers, namely in the digitization of radiographic images in a PACS environment.

Citation Download Citation

Joao G. M. Goncalves and C. J. Taylor "A High Resolution Image Digitizer For Biomedical Applications", Proc. SPIE 0914, Medical Imaging II, (27 June 1988); https://doi.org/10.1117/12.968723

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available