Title :
Lagrange multiplier selection in hybrid video coder control
Author :
Wiegand, Thomas ; Girod, Bernd
Author_Institution :
Image Process. Dept., Heinrich Hertz Inst., Berlin, Germany
fDate :
6/23/1905 12:00:00 AM
Abstract :
Lagrangian coder control with parameter choice is presented that lead to the creation of the new hybrid video coder specifications TMN-10 for H.263 and TML for H.26L. An efficient approach for the determination of the encoding parameters is developed. It is shown by means of experimental results that the Lagrange multiplier for the macroblock mode decision corresponds to the negative slope of the distortion-rate curve of the prediction error coding. This distortion-rate curve is parameterized by the quantization parameter of the DCT coefficients motivating the established dependency with the Lagrange multiplier
Keywords :
discrete cosine transforms; motion compensation; prediction theory; quantisation (signal); video coding; DCT coefficients; H.263; H.26L; Lagrange multiplier selection; TML; TMN-10; distortion-rate curve; hybrid video coder control; motion compensation; prediction error coding; quantization parameter; video compression; Bit rate; Decoding; Discrete cosine transforms; Image coding; Image processing; Lagrangian functions; Quantization; Testing; Video coding; Video compression;
Conference_Titel :
Image Processing, 2001. Proceedings. 2001 International Conference on
Conference_Location :
Thessaloniki
Print_ISBN :
0-7803-6725-1
DOI :
10.1109/ICIP.2001.958171
