期刊
JOURNAL OF FORENSIC SCIENCES
卷 59, 期 1, 页码 117-122出版社
WILEY
DOI: 10.1111/1556-4029.12274
关键词
forensic science; opto-electronic conversion function; spectral sensitivity; photography; imaging; fingerprint; electromagnetic spectrum
资金
- Australian Research Council [DP08798068]
- ARC [DP0987989]
- Colfuturo [200818772]
- Australian Research Council [DP0987989] Funding Source: Australian Research Council
Reflected ultraviolet imaging techniques allow for the visualization of evidence normally outside the human visible spectrum. Specialized digital cameras possessing extended sensitivity can be used for recording reflected ultraviolet radiation. Currently, there is a lack of standardized methods for ultraviolet image recording and processing using digital cameras, potentially limiting the implementation and interpretation. A methodology is presented for processing ultraviolet images based on linear responses and the sensitivity of the respective color channels. The methodology is applied to a FujiS3 UVIR camera, and a modified Nikon D70s camera, to reconstruct their respective spectral sensitivity curves between 320 and 400 nm. This method results in images with low noise and high contrast, suitable for qualitative and/or quantitative analysis. The application of this methodology is demonstrated in the recording of latent fingerprints.
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