JPEG compression factor control: a new algorithm

Author

Arcangelo, Bruna ; Massimo, Mancuso

fYear

2001

fDate

2001

Firstpage

206

Lastpage

207

Abstract

We propose a new algorithm for the compression factor control (CF-CTRL) when the JPEG compression algorithm is used. It can be used, for example, in the digital still cameras (DSCs), where a minimum number of photos must be stored in a fixed size memory storage. So each file size must be constant. The most used compression algorithm used in the DSC is the JPEG one, that do not ensure a fixed file size, so a compression factor control algorithm must be used. This new method is based on the analysis of the Bayer pattern, the color pattern obtained by a CCD or a CMOS sensor, obtaining the JPEG quantization tables that ensure the target dimension of the JPEG file. The main characteristics of this algorithm are speed and power consumption

Keywords

code standards; data compression; discrete cosine transforms; image coding; image colour analysis; quantisation (signal); telecommunication standards; transform coding; Bayer pattern; CCD sensor; CMOS sensor; DCT; JPEG compression factor control algorithm; JPEG file dimension; JPEG quantization tables; algorithm speed; color pattern; digital still camera; file size; lossy compression algorithm; power consumption; Charge coupled devices; Color; Compression algorithms; Digital cameras; Energy consumption; Pattern analysis; Quantization; Sensor phenomena and characterization; Size control; Transform coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, 2001. ICCE. International Conference on

Conference_Location

Los Angeles, CA

Print_ISBN

0-7803-6622-0

Type

conf

DOI

10.1109/ICCE.2001.935276

Filename

935276