Title :
Multitoning using generalized projections and the DCT
Author :
Small, Jeffrey A. ; Parker, Kevin J.
Author_Institution :
Dept. of Electr. Eng., Rochester Univ., NY, USA
Abstract :
A new method of JPEG optimization is presented which allows JPEG to be optimized for the minimum visual distortion compression of multitoned images. Projections are done between the closed nonconvex set of possible multitoned images and the closed convex set of images which are allowed when certain frequency domain constraints are applied. This allows the higher frequencies to be adjusted for more efficient JPEG compression with minimum visual distortion. This method may be applied to monochrome images or to individual color planes
Keywords :
code standards; data compression; discrete cosine transforms; image coding; telecommunication standards; transform coding; DCT; JPEG compression; JPEG optimization; closed nonconvex set; color planes; frequency domain constraints; generalized projections; image coding; minimum visual distortion; minimum visual distortion compression; monochrome images; multitoned images; multitoning; Colored noise; Discrete cosine transforms; Educational institutions; Facsimile; Frequency domain analysis; Hardware; Image coding; Optimization methods; Quantization; Transform coding;
Conference_Titel :
Image Processing, 1994. Proceedings. ICIP-94., IEEE International Conference
Conference_Location :
Austin, TX
Print_ISBN :
0-8186-6952-7
DOI :
10.1109/ICIP.1994.413511
