DocumentCode :
1978725
Title :
Signal Reconstruction Techniques Applied to High Frame Rate Sequences
Author :
Costa, Monica Isabel ; Soares, S. ; Soares, Salviano ; Barroso, Joao
Author_Institution :
Ist. Politecnico de Castelo Branco, Castelo Branco
fYear :
2007
fDate :
4-7 June 2007
Firstpage :
1699
Lastpage :
1703
Abstract :
Nowadays there are specific video equipments which allow acquisition at very high frame rates, e.g., up to 5000 fps. When observing a high frame rate sequence, it becomes noticeable that a great percentage of the frames´ pixels values do not suffer great changes along the sequence. Hence, if a pixel´s value remains the same, then a unique sample is enough to represent that particular pixel over several frames. Only pixels that suffer great variations require a higher number of samples to be correctly represented. This work reports a methodology that combines compression and reconstruction techniques to evaluate an alternative to the traditional compression methods 25/30 fps. In the proposed method, sets of pixels are extracted along the temporal direction and by exploiting the high temporal correlation of the signals, a proper decimation process is applied in order to create a sequence with a lower number of frames and consequently smaller file size. The main objective is to propose a new compression methodology that will take advantage of the signal characteristics using both compression and reconstruction techniques.
Keywords :
data compression; image reconstruction; image sampling; image sequences; video coding; downsampled signal; high frame rate sequences; image sequence; pixels; signal reconstruction; temporal correlation; video compression; Image coding; Image reconstruction; Redundancy; Signal analysis; Signal reconstruction; Spatial resolution; Telecommunications; Transform coding; Video compression; Video equipment;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial Electronics, 2007. ISIE 2007. IEEE International Symposium on
Conference_Location :
Vigo
Print_ISBN :
978-1-4244-0754-5
Electronic_ISBN :
978-1-4244-0755-2
Type :
conf
DOI :
10.1109/ISIE.2007.4374860
Filename :
4374860
Link To Document :
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