Search Results - "2013 21st Signal Processing and Communications Applications Conference (SIU)"

Lossy medical image compression using Huffman coding and singular value decomposition by Rufai, A. M., Anbarjafari, G., Demirel, H.

“…Medical images generate enormous amounts of data and therefore, efficient image compression techniques need to be employed in order to save on cost and time of…”
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Image resolution enhancement by using interpolation followed by iterative back projection by Rasti, P., Demirel, H., Anbarjafari, G.

“…In this paper, we propose a new super resolution technique based on the interpolation followed by registering them using iterative back projection (IBP). Low…”
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Security analysis of an image encryption algorithm based on chaos and DNA encoding by Ozkaynak, F., Ozer, A. B., Yavuz, S.

“…Chaos and cryptography have some common features. Due to the close relationship, researchers try to combine the chaotic system with cryptosystem. Despite the…”
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Frequency characteristics of DoS and DDoS attacks by Fouladi, Ramin Fadaei, Seifpoor, T., Anarim, E.

“…Denial of Service (DoS) and Distributed Denial of service (DDoS) attacks are common place in today's computer networks. There are different types of attacks…”
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Illumination invariant face recognition system by Tosik, C., Eleyan, A., Salman, M. S.

“…One of the main issues that degrades the performance of a face recognition system is the illumination problem. In this paper, we investigated different…”
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Alleviating class imbalance problem in data mining by Sarmanova, Akkenzhe, Albayrak, S.

“…The class imbalance problem in two-class data sets is one of the most important problems. When samples of one class in a training data set vastly outnumber…”
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Two dimensional zero-attracting variable step-size LMS algorithm for sparse system identification by Jahromi, M. N. S., Hocanin, A., Kukrer, O., Salman, M. S.

“…In this paper, we introduce a two dimensional version of the zero-attracting variable step size LMS (ZA-VSSLMS) adaptive filter for image deconvolution…”
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Performance analysis of MIMO free-space optical communication systems with selection combining by Kazemi, H., Uysal, M.

“…In this paper, we investigate the outage performance of a multi-input multi-output (MIMO) free-space optical (FSO) communication system with selection…”
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Concordance between computer-based neuroimaging findings and expert assessments in dementia grading by Iheme, L. O., Unay, D., Baskaya, O., Sennaz, A., Kandemir, M., Yalciner, Z. B., Tepe, M. S., Kahraman, T., Unal, G.

“…We present computer-based techniques for the measurement, detection and quantification of dementia related neuroimaging findings. The three focal points of…”
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Improved single image super-resolution using sparsity and structured dictionary learning in wavelet domain by Nazzal, M., Ozkaramanli, H.

“…This paper introduces a single-image superresolution approach which is based on sparse representation over dictionaries learned in the wavelet domain. The…”
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Image inpainting via singular value thresholding by Yeganli, S. F., Runyi Yu

“…This paper proposes an inpainting technique based on the singular value thresholding (SVT) algorithm for matrix completion. The SVT algorithm computes the…”
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Priority-aware downlink frame packing algorithm for OFDMA-based mobile wireless systems by Bahmani, K., Ince, E. A., Arifler, D.

“…In this paper, downlink frame packing in OFDMA-based mobile wireless communication systems is addressed by extending an existing low-complexity frame packing…”
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Initialization of nonnegative matrix factorization dictionaries for single channel source separation by Grais, E. M., Erdogan, H.

“…In this work, we study different initialization methods for the nonnegative matrix factorization (NMF) dictionaries or bases. There is a need for good…”
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Return of the king: The Fourier transform based descriptor for visual object classification by Cevikalp, H., Kurt, Z., Onarcan, A. O.

“…Most of the state-of-arts visual object classification methods use bag of words model for image representation. In this method, patches extracted from images…”
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Turkish Sign Language recognition using spatio-temporal features on Kinect RGB video sequences and depth maps by Memis, A., Albayrak, S.

“…This paper presents a Turkish Sign Language recognition system that uses spatio-temporal features on Kinect sensor RGB video sequences and depth maps. Proposed…”
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Gesture recognition for humanoid assisted interactive sign language tutoring by Ertugrul, B. S., Gurpinar, C., Kivrak, H., Kose, H.

“…This work is part of an ongoing work for sign language tutoring with imitation based turn-taking and interaction games (iSign) with humanoid robots and…”
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Assessment of MRF based joint scale selection and segmentation for 3D liver vessel segmentation task by Marvasti, Neda B., Acar, B.

“…Vessel segmentation plays an important role in medical image analysis. Irrespective of the modality used, the common challenge in all vessel tracking methods…”
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Intelligent recognition of emotional expressions in 3D face images by Khashman, A., Conkbayir, F. O.

“…A facial expression is one or more motions or positions of the muscles in the face skin. These movements convey the emotional state of the individual to…”
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Transmit beamformer design with nonlinear optimization by Demir, O. T., Engin Tuncer, T.

“…Two methods for maxmin transmit beamformer design with multiple simultaneous beams are compared. Both methods involve convex optimization with semidefinite…”
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Plastic waste sorting using infrared hyperspectral imaging system by Karaca, A. C., Erturk, A., Gullu, M. K., Elmas, M., Erturk, S.

“…The inherent chemical properties of materials can be brought into perspective using the large amount of spectral information provided by hyperspectral imaging…”
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