Latent fingerprint residue detection method using Sagnac Fourier transform imaging spectroscopy.

Xueqiong Bai, Wenming Yang, Weitao Song, Ningfang Liao

Applied optics 2021 Jul 01

filter terms:

We propose a new method to detect latent fingerprints and their residues based on Sagnac ultraviolet Fourier transform imaging spectroscopy. The three-dimensional data cube including two-dimensional images and spectrum dimensions can be obtained by the new hyperspectral imaging technique. The method to inhibit the redundancy from the spectra-image data is also presented, which includes the self-adaptive differential filtering, the apodization algorithm, and a fast Fourier transform method. The whole process is also discussed in detail. Not only the latent fingerprint but also its residues' distribution are provided in experimental results, and the proposed method is demonstrated.

Citation

Xueqiong Bai, Wenming Yang, Weitao Song, Ningfang Liao. Latent fingerprint residue detection method using Sagnac Fourier transform imaging spectroscopy. Applied optics. 2021 Jul 01;60(19):5534-5539