Title :
Advanced DCT rate control by single step analysis
Author :
Bruna, A. ; Capra, A. ; Battiato, S. ; La Rosa, S.
Author_Institution :
AST Catania Lab., STMicroelectron., Italy
Abstract :
The work presents a robust rate control algorithm for JPEG compression, mainly used in digital cameras. The overall control is based on the statistical properties of JPEG compressed images, the relationship between the coding bit rate and the percentage of zeros among the quantized transform coefficients. It allows a good trade off between resources and precision to be obtained.
Keywords :
data compression; discrete cosine transforms; image coding; quantisation (signal); statistical analysis; transform coding; DCT rate control; JPEG compression; coding bit rate; digital cameras; image compression; quantized transform coefficients; single step analysis; statistical properties; Bit rate; Digital cameras; Discrete cosine transforms; Energy consumption; Engines; Histograms; Image coding; Iterative algorithms; Quantization; Transform coding;
Conference_Titel :
Consumer Electronics, 2005. ICCE. 2005 Digest of Technical Papers. International Conference on
Print_ISBN :
0-7803-8838-0
DOI :
10.1109/ICCE.2005.1429913
