Performance analysis of digital cameras versus chromatic white light (CWL) sensors for the localization of latent fingerprints in crime scenes

2012 ◽  
Author(s):  
Mathias Jankow ◽  
Mario Hildebrandt ◽  
Jennifer Sturm ◽  
Stefan Kiltz ◽  
Claus Vielhauer
Keyword(s):  
Performance Analysis ◽  
White Light ◽  
Digital Cameras ◽  
Latent Fingerprints ◽  
Crime Scenes

Designing a Color Filter with High Overall Transmittance for Improving the Color Accuracy of Digital Cameras

2021 ◽  
Vol 2021 (29) ◽  
pp. 1-6
Author(s):  
Yuteng Zhu ◽  
Graham D. Finlayson
Keyword(s):  
White Light ◽  
Digital Camera ◽  
Color Filter ◽  
Digital Cameras ◽  
Spectral Transmittance ◽  
Optimal Filters ◽  
Prior Art ◽  
Average Transmittance ◽  
Tristimulus Values ◽  
Correction Problem

Previously improved color accuracy of a given digital camera was achieved by carefully designing the spectral transmittance of a color filter to be placed in front of the camera. Specifically, the filter is designed in a way that the spectral sensitivities of the camera after filtering are approximately linearly related to the color matching functions (or tristimulus values) of the human visual system. To avoid filters that absorbed too much light, the optimization could incorporate a minimum per wavelength transmittance constraint. In this paper, we change the optimization so that the overall filter transmittance is bounded, i.e. we solve for the filter that (for a uniform white light) transmits (say) 50% of the light. Experiments demonstrate that these filters continue to solve the color correction problem (they make cameras much more colorimetric). Significantly, the optimal filters by restraining the average transmittance can deliver a further 10% improvement in terms of color accuracy compared to the prior art of bounding the low transmittance.

Performance analysis of a tandem of white-light fiber-optic interferometers

1997 ◽  
Vol 135 (1-3) ◽  
pp. 1-6 ◽  
Author(s):  
Waclaw Urbanczyk ◽  
Piotr Kurzynowski ◽  
Wladyslaw A Wozniak ◽  
Wojtek J Bock
Keyword(s):  
Performance Analysis ◽  
White Light ◽  
Fiber Optic

On non-invasive 2D and 3D Chromatic White Light image sensors for age determination of latent fingerprints

2012 ◽  
Vol 222 (1-3) ◽  
pp. 52-70 ◽  
Author(s):  
Ronny Merkel ◽  
Stefan Gruhn ◽  
Jana Dittmann ◽  
Claus Vielhauer ◽  
Anja Bräutigam
Keyword(s):  
White Light ◽  
Age Determination ◽  
Image Sensors ◽  
Latent Fingerprints ◽  
Non Invasive ◽  
Light Image ◽  
2D And 3D

scholarly journals PERANAN SIDIK JARI DALAM PROSES PENYIDIKAN UNTUK MENENTUKAN PELAKU TINDAK PIDANA

2017 ◽  
Vol 3 (1) ◽  
pp. 46
Author(s):  
Anny Yuserlina
Keyword(s):  
Chemical Process ◽  
Latent Fingerprints ◽  
Community Police ◽  
Latent Fingerprint ◽  
Investigation Process ◽  
Crime Scenes

Taking the latent fingerprints is present on the objects at the scene of the case, after which the object is held or tramped can be done in two ways, namely through puder and chemical process. Besides, fingerprint can also be done at the Investigation Office against suspects and people who want to take care of the letters, such as SKKB. In this case fingerprint is performed on a rolled impression and plain impression columns and columns for information along with the identity of the person whose fingerprints are taken. In the case of the perpetrator or suspect of a crime not yet caught, the fingerprint is one of the objective physical proofs in recognizing the return and identification of its behavior by comparing fingerprints between suspected persons or fingerprints that have been stored in police files with latent fingerprints found from crime scenes (TKP). it uses the empirical yuidist method which is empirical juridical itself according to Fred N Kerlner: as the questions tried to find the answer. It can be concluded that the authors want to approach the role of fingerprints in the investigation process tub from juridical aspect (legislation) maupundalam aspect p the implementation of the community (police). So in conclusion the latent fingerprint is found on the objects at the scene of the case, after the object is held or tramped can be done in two ways, namely through puder and chemical process. Besides, fingerprint can also be done at the Investigation Office against suspects and people who want to take care of the letters, such as SKKB. In this case fingerprint is performed on a rolled impression and a plain impression and a column for information along with the identity of the person fingerprints are taken.

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