Title :
Real-time H.263 encoding of QCIF-images on TMS320C6201 fixed point DSP
Author :
Lehtoranta, Olli ; Hämäläinen, Timo ; Saarinen, Jukka
Author_Institution :
Signal Process. Lab., Tampere Univ. of Technol., Finland
Abstract :
In this paper a real-time video encoder following ITU-T H.263 recommendation is described and relative computational loads of various encoding phases are evaluated. The current implementation shows that QCIF size (176×144) images can be coded in real-time by TMS320C6201 when computationally light motion estimation routines and basic H.263 coding mode is used. The real-time performance can be achieved using C-code and optimizing some key functions like SAD (sum of absolute difference) with linear assembler. In addition, careful memory management design for program code and application data is required. With the presented coding scheme, up to 29 fps can be achieved
Keywords :
digital signal processing chips; motion estimation; real-time systems; video coding; C-code; ITU-T H.263 recommendation; QCIF-images; SAD; Texas Instruments TMS320C6201 fixed point DSP; encoding phases; key functions; linear assembler; memory management design; motion estimation routines; real-time H.263 encoding; relative computational loads; sum of absolute difference; video encoder; Application specific integrated circuits; Clocks; Digital signal processing; Encoding; Hardware; Motion estimation; Real time systems; Registers; Video signal processing; Videoconference;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.857162
