Komprese obrázku pomocí vlnek (wavelets)

Abstract

The aim of this diploma thesis is the implementation of discrete wavelet transformation as a compression method for the image data. In the first part, it is possible to look into the problems of image representation as the color models or basic graphic formats. Subsequently, we analyze image compression, the best known compression methods, thus we get to the main theme of this work that is the wavelet transformation. The concepts of wavelet are described here, of which the best known ones are Haar or Daubechies, decomposition, SPIHT coding, or realization of the wavelet transformation itself. Thus we are also briefly acquainted with the way of evaluating the quality of the resulting image. The last part compares the individual ripples between each other, their effect on compression and so on. We have compared our results with JPEG2000 using Kakadu software. The JPEG2000 format has not been overcome.