The Wavelet Scalar Quantization (WSQ) fingerprint compression algorithm was developed by the FBI in close coordination with NIST over several years in the early 90's. At that time, automated fingerprint matching technologies were becoming a key criminal justice tool, and the FBI was in need of an effective and efficient standard methodology to support the electronic exchange of fingerprint images; particularly as the FBI was beginning plans to stand up their Integrated Automated Fingerprint Identification System (IAFIS). The WSQ algorithm was specifically designed to compress 8-bit gray-scale, 500 ppi (19.7 ppmm), fingerprint imagery. This bibliography lists documentation describing the technical details of the algorithm. It also chronicles the development process involving both technical studies as well as strategic efforts to achieve community acceptance and adoption.
This seminal work was conducted in collaboration with the International Association for Identification (IAI), particularly the AFIS Subcommittee - active at that time (1992-1995). NIST would like to acknowledge the IAI's Journal of Forensic Identification for its fine work in documenting and archiving the evolution of the WSQ algorithm, and for permitting NIST to electronically share these articles within this bibliography.