The corrected image is further enhanced and sent for matching purposes. A geometrical compensation method, which takes the curvature of the surface into consideration, is formulated to geometrically correct (i.e., flatten) the image. The latent fingerprint is uncovered (i.e., made visible) by means of fuming, and the end product is captured by a camera. This paper focuses on latent fingerprints left on curved surfaces, such as water taps, door knobs, and water flasks. Therefore, a reduced contact method is desirable. To lift these latent fingerprints, the conventional approach involving the process of powdering and taping may physically damage the latent fingerprint. Despite its subtle appearance, the latent fingerprint is commonly left all over the place unintentionally, including on water taps, door knobs, elevator buttons, and cups. One form of fingerprint is called the latent fingerprint. This is also due in part to its use in crime scene investigations to link crimes to suspected individuals. Fingerprint is the most well-known and successfully deployed biometric modalities in view of its ease of acquisition, established use, acceptance and high recognition rate (i.e., robustness).
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