advertisement
Abstract #6748 Published in IGR 4-1
The St Gallen digital ophthalmological imaging system
Torok B; Bischoff PKlinische Monatsblätter für Augenheilkunde 2002; 219: 306-310
BACKGROUND: Digital photography has many advantages over the conventional method. At present, commercially available digital ophthalmological imaging systems only utilize a fraction of the advantages of this technique, and some of them have fundamental conceptional problems. METHODS: Images of a fundus camera, a slit lamp and a scanning laser ophthalmoscope were digitized using digital and video cameras and/or frame grabber cards. Digital images and movies were recorded via a personal computer. The image recording software was developed using an imaging library and open source software. The recorded images and video sequences were processed with three different commercially available program packages. The images were archived in an around-the-clock accessible database. RESULTS: The authors' digital imaging system is capable of recording normal and high resolution slit lamp images, color fundus images in normal resolution, fluorescein angiography images in normal and high resolution, digital simultaneous ICG and fluorescein videoangiograms (without compression), and high resolution macro images. Different functions, for example, contrast enhancement are integrated in the image capture software. Most of the parameters of the image acquisition are individually adaptable. The digital image archive supports multiple image and video formats. CONCLUSIONS: Using standard software and hardware components, an imaging system can be constructed featuring functions usually not available in commercial ones. Since the system is adaptable, recording of images with a wide variety of parameters, for example, for measurements for scientific experiments, is possible.LA: German
Dr. B. Torok, Kantonsspital St Gallen, Augenklinik, St Gallen, Switzerland. bela.torok@kssg.ch
Classification:
6.8.2 Posterior segment (Part of: 6 Clinical examination methods > 6.8 Photography)
6.9.1 Laser scanning (Part of: 6 Clinical examination methods > 6.9 Computerized image analysis)
