[The preprocessing of subtraction and the enhancement for biomedical image of retinal blood vessels].
Image segmentation is still a difficult problem since its effect would vary with the subjects processed. An approach of subtracting background from the entire image of retinal blood vessels presented in this paper. The background subtraction is based on the real image itself taken photographically and is not dependent on the prior knowledge of system for recording image, the approach achieves the grayscale enhancement of retinal blood vessels in preprocessing and provides a quality image for the next process of binarization. This experiment in the preprocessing of subtraction shows good enhancement effect.
Department of Electronics & Communication, South China University of Technology, Guangzhou 510640.
Tusheng
T
Lin
Minghui
M
Du
Jintang
J
Xu
D000465:Algorithms; D016477:Artifacts; D005451:Fluorescein Angiography / Q000379:methods*; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D012171:Retinal Vessels / Q000033:anatomy & histology