Nam Jae Yeal, Choe Jee Hoon, Son Yoo Ek

The Transactions of the Korea Information Processing Society (1994 ~ 2000), Vol. 5, No. 8, pp. 2190-2202, Aug. 1998
10.3745/KIPSTE.1998.5.8.2190,   PDF Download:

Abstract

Images are playing a very important role in multimedia information of various fields such as computer graphics, education, medical information. In this information age, especially, the fingerprint images are used as important information in the security and authentication systems. However, in the existing cases of the systems, the adopted method for storing the fingerprint information is to store just the peculiar partly information of each fingerprint, because of the vast amount of storage needed for fingerprint images, so the various applications for the efficient fingerprint identification or retrieval have been constrained. Although the JPEG is now available as a still picture compression standard, it is actually very difficult to use JPEG standard in the case that high compression ratio above 20:1 is needed in those systems, because many coding artifacts are caused. Therefore, it has been greatly desired to develop an codec accomplishing such a high compression and providing high image quality at the low bit rate. In this paper, as an answer to those requirements, we developed an image compression codec according to the FBI fingerprint image compression standard which was based on the WSQ, the newly emerging image compression technique. The developed software codec can be operated in Windows95@ environment for the practical compression and decompression of fingerprint images. Retaining the compatibility with FBI codec, the developed codec came to have better performance than FBI's by applying the performance enhancement technique. The developed codec is also applicable in electronic ID card and various authentication system industries.

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