Now showing items 1-20 of 72

    • 2-D adaptive prediction based Gaussianity tests in microcalcification detection 

      Gürcan, M. Nafi; Yardımcı, Yasemin; Çetin, A. Enis (SPIE, 1998-01)
      With increasing use of Picture Archiving and Communication Systems (PACS), Computer-aided Diagnosis (CAD) methods will be more widely utilized. In this paper, we develop a CAD method for the detection of microcalcification ...
    • 2-D triangular mesh-based mosaicking for object tracking in the presence of occlusion 

      Toklu, C.; Tekalp, A. M.; Erdem, A. Tanju (SPIE, 1997)
      In this paper, we describe a method for temporal tracking of video objects in video clips. We employ a 2D triangular mesh to represent each video object, which allows us to describe the motion of the object by the displacements ...
    • Accelerated phase-cycled SSFP imaging with compressed sensing 

      Çukur, T. (Institute of Electrical and Electronics Engineers Inc., 2015)
      Balanced steady-state free precession (SSFP) imaging suffers from irrecoverable signal losses, known as banding artifacts, in regions of large B0 field inhomogeneity. A common solution is to acquire multiple phase-cycled ...
    • Adaptive grids: an image-based approach to generate navigation meshes 

      Akaydın, A.; Güdükbay, U. (S P I E - International Society for Optical Engineering, 2013-02-01)
      We propose adaptive grids, an image-based approach for constructing navigation meshes, which are used for path planning. A cellular navigation mesh, called an adaptive grid, is constructed from a top-view range image of a ...
    • Analog CMOS implementation of cellular neural networks 

      Baktır, I. A.; Tan, M. A. (IEEE, 1993)
      The analog CMOS circuit realization of cellular neural networks with transconductance elements is presented. This realization can be easily adapted to various types of applications in image processing just by choosing the ...
    • Autofocused spotlight SAR image reconstruction of off-grid sparse scenes 

      Camlıca, S.; Gurbuz, A. C.; Arıkan, Orhan (Institute of Electrical and Electronics Engineers Inc., 2017)
      Synthetic aperture radar (SAR) has significant role in remote sensing. Phase errors due to uncompensated platform motion, measurement model mismatch, and measurement noise can cause degradations in SAR image reconstruction. ...
    • An automated system for design-rule-based visual inspection of printed circuit boards 

      Oğuz, Seyfullah Halit; Onural, Levent (IEEE, 1991)
      The design and the implementation of an automated, design-rule-based, visual printed circuit board (PCB) inspection system are presented. The system employs mathematical-morphology-based image processing algorithms. This ...
    • Automatic detection of geospatial objects using multiple hierarchical segmentations 

      Akçay, H. G.; Aksoy, S. (Institute of Electrical and Electronics Engineers, 2008-07)
      The object-based analysis of remotely sensed imagery provides valuable spatial and structural information that is complementary to pixel-based spectral information in classification. In this paper, we present novel methods ...
    • Automatic image captioning 

      Pan J.-Y.; Yang H.-J.; Duygulu, Pınar; Faloutsos, C. (2004)
      In this paper, we examine the problem of automatic image captioning. Given a training set of captioned images, we want to discover correlations between image features and keywords, so that we can automatically find good ...
    • Block wavelet transforms for image coding 

      Çetin, A. Enis; Gerek, Ö. N.; Ulukuş, Ş. (IEEE, 1993)
      In this paper, a new class of block transforms is presented. These transforms are constructed from subband decomposition filter banks corresponding to regular wavelets. New transforms are compared to the discrete cosine ...
    • BRAPH: A graph theory software for the analysis of brain connectivity 

      Mijalkov, M.; Kakaei, E.; Pereira, J. B.; Westman, E.; Volpe, G. (Public Library of Science, 2017)
      The brain is a large-scale complex network whose workings rely on the interaction between its various regions. In the past few years, the organization of the human brain network has been studied extensively using concepts ...
    • Carcinoma cell line discrimination in microscopic images using unbalanced wavelets 

      Keskin, Furkan; Suhre, Alexander; Erşahin, Tüli,; Çetin Atalay, Rengül; Çetin, A. Enis (IEEE, 2012-03)
      Cancer cell lines are widely used for research purposes in laboratories all over the world. In this paper, we present a novel method for cancer cell line image classification, which is very costly by conventional methods. ...
    • Cepstrum based feature extraction method for fungus detection 

      Yorulmaz, Onur; Pearson, T.C.; Çetin, A. Enis (SPIE, 2011)
      In this paper, a method for detection of popcorn kernels infected by a fungus is developed using image processing. The method is based on two dimensional (2D) mel and Mellin-cepstrum computation from popcorn kernel images. ...
    • A color and shape based algorithm for segmentation of white blood cells in peripheral blood and bone marrow images 

      Arslan, S.; Ozyurek, E.; Gunduz Demir, C. (John Wiley & Sons, Inc., 2014)
      Computer-based imaging systems are becoming important tools for quantitative assessment of peripheral blood and bone marrow samples to help experts diagnose blood disorders such as acute leukemia. These systems generally ...
    • Compressive sensing based flame detection in infrared videos 

      Günay, Osman; Çetin, A. Enis (IEEE, 2013)
      In this paper, a Compressive Sensing based feature extraction algorithm is proposed for flame detection using infrared cameras. First, bright and moving regions in videos are detected. Then the videos are divided into ...
    • Computer vision based forest fire detection 

      Töreyin, B. Uğur; Çetin, A. Enis (IEEE, 2008)
      Lookout posts are commonly installed in the forests all around Turkey and the world. Most of these posts have electricity. Surveillance cameras can be placed on to these surveillance towers to detect possible forest fires. ...
    • Computer vision based text and equation editor for LATEX 

      Öksüz, Özcan; Güdükbay, Uğur; Çetin, Enis (IEEE, 2004-06)
      In this paper, we present a computer vision based text and equation editor for LATEX. The user writes text and equations on paper and a camera attached to a computer records actions of the user. In particular, positions ...
    • Continuous processing of images through user sketched functional blocks 

      Kaya, A.; Ozguc, B. (Wiley-Blackwell, 1988)
      Our aim is to implement an image processing system with previously defined algorithms through the use of functional blocks connected together to form a diagram that we call a schematic. A functional block means the ...
    • Current constrained voltage scaled reconstruction (CCVSR) algorithm for MR-EIT and its performance with different probing current patterns 

      Birgül, Ö.; Eyüboğlu, B. M.; İder, Y. Z. (Institute of Physics Publishing, 2003)
      Conventional injected-current electrical impedance tomography (EIT) and magnetic resonance imaging (MRI) techniques can be combined to reconstruct high resolution true conductivity images. The magnetic flux density ...
    • Design and implementation of a general purpose VLSI median filter unit and its applications 

      Karaman, Mustafa; Onural, Levent; Atalar, Abdullah (IEEE, 1989)
      A VLSI median filter unit has been designed and implemented in 3-μ m M2 CMOS, using full-custom VLSI design techniques. The unit consists of two single-chip median filters, one extensible and one real-time. The chips are ...