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24 April 2002 Very fast algorithm for the JPEG compression factor control
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In this paper we propose a new algorithm for the Compression Factor Control when the JPEG standard is used. It can be used, for example, when the memory size to store the image is fixed, like in a Digital Still Camera, or when a limited band channel is used to transmit the image. The JPEG standard is the image compression algorithm used 'de facto' by all the devices due the good trade off between compression ratio and quality, but it do not ensure a fixed stream size due to the run-length/variable-length encoding, so a compression factor control algorithm is required. This algorithm allows a very good rate control in a faster way compared to the known algorithms and a lower power consumption too, so it can be used in the portable devices.
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Arcangelo Bruna, Massimo Mancuso, Alessandro Capra, and Salvatore Curti "Very fast algorithm for the JPEG compression factor control", Proc. SPIE 4669, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications III, (24 April 2002);

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