Region based lossless compression for digital images in telemedicine application

Abstract

Region Based Coding Technique is significant for medical image compression and transmission. In medical images, only a small portion of the image might be diagnostically useful. In these regions, lossless compression can helps to achieve high efficiency performance in telemedicine applications. This paper proposes a very efficient and low complexity compression method for Digital Imaging and Communications in Medicine (DICOM) images. Main advantages of Region based coding technique is exploited in this paper. Segmentation of these regions leads to optimal performance. Here the ROI part of the image is identified by manually and combined with effect of Integer Wavelet Transform (IWT). IWT compression technique is useful to reconstruct the original image, reversibly with desired quality. The overall compression process helps to reach a satisfactory level for image transmission in limited bandwidth over a telemedicine application.