20-08-2013, 04:33 PM
A Novel algorithm of local contrast enhancement for medical image
ABSTRACT
The local contrast enhancement of medical image is useful and important to the
medicine diagnosis. The current techniques of local enhancing exists both over-
enhancing and high complexity problems. The over-enhancement may cause the
clinical information loss. In this paper, we propose the weighted calculation to
prevent the unexpected effects appearing and the local bihistogram equalization
to reduce the over-enhancing artifacts. The constraint curve provides a mechanism
of automatic modification. We also propose the pixel-matching scheme for similar
value search and an interlaced data flow for implementing our algorithm in parallel.
The experimental results have proven that our method enhances efficiently the
adjacent organic structure of the heart in MRI without local noise.