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[22490] Rozdział: Two-Stage Image Compression Using Wavelet and Piecewise-Linear Transformsw książce: Recent Trends in Multimedia Information ProcessingISBN: 80-86645-05-3 Wydawca: Czech Technical University in Prague Opublikowano: Wrzesień 2003 Miejsce wydania: Praga, Czechy Liczba stron: 4 Liczba arkuszy wydawniczych: 0.50 Autorzy / Redaktorzy / Twórcy
Grupa MNiSW: Autorstwo rozdziału w monografii naukowej w językach: angielskim, niemieckim, francuskim, hiszpańskim, rosyjskim lub włoskim Punkty MNiSW: 3 Keywords: image compression  transform coding  wavelet transform  piecewise-linear transforms  |
Some experimental results of image compression with the use of modified two-stage transform method are presented in the paper. Both the Wavelet Transform and Piecewise-Linear Transforms, such as the PWL (Periodic Walsh Piecewise-Linear) and the HPL (Haar Piecewise-Linear) are presented. A two-stage compression method, using wavelet and piecewise–linear transform is introduced. Some experimental results obtained with the use of the proposed compression method are enclosed. Comparison of effectiveness has been done in terms of classical quality criteria, such as the Mean Square Error (MSE) and the Peak Signal-to-Noise Ratio (PSNR).