Medical Image Compression using Block Processing with DCT

Abstract: To provide an efficient image compression method for medical imaging , an effective approach Discrete Cosine Transform (DCT) with block processing is presented in this paper. To stimulate image transformation, discrete cosine transformation is used first. The discrete cosine transformation transform image into several parts by keeping image visual quality. DCT is most commonly used transformation based on fourier transformation. After successful transformation using DCT method block processing is applied on transformed image. In block processing operations are performed on blocks of image instead processing whole image. In our proposed paper block processing on image is done with 8X8 block. Experimental results shows that block processing with dct compress images faster compared with conventional DCT and older variant of other variant of DCT.

Keywords: Image Compression, Medical Imaging, PSNR, MSE, Compression Ratio (CR), Compression size, Block processing. CT, MRI, PET.