Title :
Removal of image defocus and motion blur effects with a nonlinear interpolative vector quantizer
Author :
Sheppard, David G. ; Panchapakesan, Kannan ; Bilgin, Ali ; Hunt, Bobby R. ; Marcellin, Michael W.
Author_Institution :
Dept. of Electr. & Comput. Eng., Arizona Univ., Tucson, AZ, USA
Abstract :
In this paper, results are presented which demonstrate the removal of image defocus and motion blur effects using an algorithm based on nonlinear interpolative vector quantization (NLIVQ). The algorithm is trained on original and diffraction-limited image pairs which are representative of the class of images of interest. The discrete cosine transform is used in the code-book design process to control complexity. Imagery processed with this algorithm demonstrate both qualitative and quantitative improvements (as measured by the peak signal-to-noise-ratio before and after processing)
Keywords :
computational complexity; discrete cosine transforms; image coding; image enhancement; image representation; image restoration; interpolation; transform coding; vector quantisation; NLIVQ; algorithm; code-book design process; complexity; diffraction-limited image pairs; discrete cosine transform; image defocus effects; motion blur effects; nonlinear interpolative vector quantizer; original image pairs; Decoding; Degradation; Discrete cosine transforms; Image coding; Image restoration; Nonlinear optics; Optical signal processing; Pixel; Signal processing algorithms; Vector quantization;
Conference_Titel :
Image Analysis and Interpretation, 1998 IEEE Southwest Symposium on
Conference_Location :
Tucson, AZ
Print_ISBN :
0-7803-4876-1
DOI :
10.1109/IAI.1998.666850