This compression method is preferred over standard compression algorithms like JPEG because at the same compression ratios WSQ doesn't present the "blocking artifacts" and loss of fine-scale features that are not acceptable for identification in financial environments and criminal justice. [1]
Most American law enforcement agencies use WSQ for efficient storage of compressed fingerprint images at 500 pixels per inch (ppi). For fingerprints recorded at 1000 ppi, law enforcement (including the FBI) uses JPEG 2000 instead of WSQ.[citation needed]
wavelet, scalar, quantization, wavelet, scalar, quantization, algorithm, compression, algorithm, used, gray, scale, fingerprint, images, based, wavelet, theory, become, standard, exchange, storage, fingerprint, images, developed, alamos, national, laboratory, . The Wavelet Scalar Quantization algorithm WSQ is a compression algorithm used for gray scale fingerprint images It is based on wavelet theory and has become a standard for the exchange and storage of fingerprint images WSQ was developed by the FBI the Los Alamos National Laboratory and the National Institute of Standards and Technology NIST This compression method is preferred over standard compression algorithms like JPEG because at the same compression ratios WSQ doesn t present the blocking artifacts and loss of fine scale features that are not acceptable for identification in financial environments and criminal justice 1 Most American law enforcement agencies use WSQ for efficient storage of compressed fingerprint images at 500 pixels per inch ppi For fingerprints recorded at 1000 ppi law enforcement including the FBI uses JPEG 2000 instead of WSQ citation needed See also editIAFISReferences edit Jain Anil Pankanti Sharath 2001 Automated Fingerprint Identification and Imaging Systems Advances in Fingerprint Technology 2nd ed CRC Press pp 275 326 CiteSeerX 10 1 1 21 380 ISBN 978 0 8493 0923 6 External links editWSQ Fingerprint Image Compression Encoder Decoder Certification Guidelines WSQ Fingerprint Image Compression Encoder Decoder Certification Retrieved from https en wikipedia org w index php title Wavelet scalar quantization amp oldid 1079536471, wikipedia, wiki, book, books, library,
