Papers by Abidin Çalışkan
2014 22nd Signal Processing and Communications Applications Conference (SIU), 2014
ABSTRACT
A biometric system provides automatic identification of an individual based on a unique feature o... more A biometric system provides automatic identification of an individual based on a unique feature or characteristic possessed by the individual. Palmprint recognition is regarded as the reliable and accurate biometric identification system available. In this work, a analysis of biometric technologies has been realized and a palmprint recognition system has been researched. Viewed in the palm of biometric approaches, compared to other models because it is a new handheld biometric feature recognition systems has recently attracted the attention of researchers.
—Computer Graphics (CG) is the art of rendering, and visualizing images on the computer screens. ... more —Computer Graphics (CG) is the art of rendering, and visualizing images on the computer screens. In three-dimensional (3D) CG, a scene is first modeled geometrically, typically using triangles, and the computer is then used to calculate what the scene will look like from a specific view point at a particular instant. In CG, one of the major goals is to create photo-realistic images in real time. In recent years, Volume Visualization (VV) has attracted the attention of many researchers. VV techniques have been used to analyze and render 3D datasets, obtained from a variety of sources including medical scanners, and results of simulation of physical and synthetic phenomena, on the computer screen. Volume Graphics (VG) has proven itself as an independent graphics technology. A common purpose of VG is to achieve photo realistic rendering. To achieve this, reflections, shadows, refraction and perspective projections are all necessary elements since they occur naturally in the natural environment.
A biometric system provides automatic identification of an individual based on a unique feature o... more A biometric system provides automatic identification of an individual based on a unique feature or characteristic possessed by the individual. Today, fingerprint has a wide field of use in several areas of biometric system. It is especially used in human identification and verification, which is more reliable than the traditional methods used for access. In this work, Gabor Wavelet Transform based fingerprint recognition system has been realized. The wavelet features are extracted from the gray-scale fingerprint image. Finally, the k nearest neighbor classifier is used for the recognition of fingerprint images. The proposed algorithm is tested on images from PolyU high resolution fingerprint database. Experimental results have shown that the proposed method can improve the accuracy of existing methods. Keywords — biometric system, fingerprint recognition, gabor wavelet transform, k nearest neighbor.
A biometric system provides automatic identification of individuals based on a unique feature or ... more A biometric system provides automatic identification of individuals based on a unique feature or characteristic of the individuals. Palmprint biometric system has an important place among biometric identification systems because of its advantages. In this study, Gray Level Co-Occurence Matrix based palmprint recognition system which provides successful results for tissue type of image identifying has been proposed. Firstly, image coordinate system has been defined to facilitate image alignment for feature extraction. Then, region of interest is cropped from the palmprint images. The properties of the interested region have been determined using the developed system and it has been given to the classifier for recognition.
Palmprint recognition system is regarded as the reliable and accurate biometric identification sy... more Palmprint recognition system is regarded as the reliable and accurate biometric identification system available. Viewed in the palmprint recognition system of biometric approaches, compared to other models because it is a new handheld biometric feature recognition system has recently attracted the attention of researchers. In this study, palmprint recognition system based on Gabor wavelet transform has been developed. Firstly, image coordinate system is defined to facilitate image alignment for feature extraction. Then, region of interest is cropped from the palmprint images. With developed system feature extracted of region of interest and given of Multi layer perception classifier.
Medical images are visualized by computer and processed to obtain larger, more organized, and thr... more Medical images are visualized by computer and processed to obtain larger, more organized, and three-dimensional (3D) images. Thus, significant images are provided. The processed data facilitate diagnosis and treatment in the medical fields. The 3D surface models of related areas are formed by using volumetric data obtained by employing medical imaging methods such as Magnetic Resonance (MR) and Computer Tomography (CT). The purpose of this study is to obtain 3D images from the two-dimensional CT slices. These slices are obtained from the existing medical imaging devices and transferred to the z space and a mesh structure is provided between them. In addition, we investigated 3D imaging techniques, visualization, basic data types, conversion into main graphical components, and imaging algorithms. At the phase of obtaining 3D images; the image processing methods such as surface and volume imaging techniques, smoothing, denoising, and segmentation were used. The complexity and efficiency properties of the imaging algorithms were investigated and image enhancement algorithms were utilized.
In this paper, data having medical file extensions were passed through various image processing s... more In this paper, data having medical file extensions were passed through various image processing stages, and boundary determination operations were performed. We aimed to obtain three-dimensional (3D) images after transferring the two-dimensional (2D) CT slices, obtained from the existing medical imaging devices, and to provide a mesh structure between them. At the phase of obtaining 3D images, image processing techniques such as surface and volume imaging techniques were used, and the complexity and effectiveness of the imaging algorithms were investigated, and image improving algorithms were used, as well. The noise filtering techniques for the images have been reviewed and 3D surface model has been obtained using volume rendering techniques.
—A biometric system provides automatic identification of an individual based on a unique feature ... more —A biometric system provides automatic identification of an individual based on a unique feature or characteristic possessed by the individual. Palmprint recognition is regarded as the reliable and accurate biometric identification system available. In this work, a analysis of biometric technologies has been realized and a palmprint recognition system has been researched. Viewed in the palm of biometric approaches, compared to other models because it is a new handheld biometric feature recognition systems has recently attracted the attention of researchers.
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Papers by Abidin Çalışkan