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This paper presents a new method for comparing and classifying lip print images. In the proposed method a lip print image is first binarized and then subjected to the Hough transform. As a result a collection of line segments approximating the lip print pattern is obtained. Each segment is described by its length, angle and midpoint coordinates. Lip prints are compared using the mean differences similarity...
This paper presents a method of latent lip print identification. Lip prints, among other latent traces, can be found at a crime scene. They are captured by police technicians and after further analysis provide a valuable evidence. In the proposed method image standardization and lip print pattern extraction are performed. Then analyzed lip print is identified using image matching based on Fast Normalized...
This paper presents a method of lip print recognition using the Dynamic Time Warping algorithm (DTW). The presented method consists of two stages. In the first stage lip print image is subjected to pre-processing which aims to distinct the lip pattern. In the second stage features extraction is performed by generation of the lip pattern image projections: horizontal, vertical and oblique (angle of...
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