A new coding scheme for 2-D and 3-D MR images using shape adaptive integer wavelet transform

We propose a new shape adaptive integer wavelet transform based progressive transmission coding scheme for 2-D and 3-D MRI. The scheme consists of (a) extraction of shape information (b) shape adaptive integer wavelet transform (c) intraband wavelet encoding and (d) entropy coding. The proposed scheme results in improved performance of progressive transmission as compared to the conventional rectangular wavelet transform coding schemes. The main contribution of this paper is its unique approach which rejects the noisy background rather than considering it for lossy compression as proposed in most of the recent schemes. This rejection of unwanted information results in considerable decrease in bit rate. Another contribution is object based 3-D coding which is out of scope of baseline JPEG2000.