Yazar "Ateş, Hasan Fehmi" için listeleme
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3-D Mesh geometry compression with set partitioning in the spectral domain
Bayazıt, Uluğ; Konur, Umut; Ateş, Hasan Fehmi (IEEE-INST Electrical Electronics Engineers Inc, 2010-02)This paper explains the development of a highly efficient progressive 3-D mesh geometry coder based on the region adaptive transform in the spectral mesh compression method. A hierarchical set partitioning technique, ... -
An algorithm and its architecture for half-pixel variable block size motion estimation
Fatemi, Mohammad Reza Hosseiny; Salleh, Rosli Bin; Ateş, Hasan Fehmi (IEEE, 2007)This paper presents an accurate half-pixel variable block size motion estimation algorithm and its hardware architecture. The proposed algorithm does not require interpolation of the reference frame pixels and has near ... -
Analysis and design of low-cost bit-serial architectures for motion estimation in H.264/AVC
Fatemi, Mohammad Reza Hosseiny; Ateş, Hasan Fehmi; Salleh, Rosli Bin (Springer, 2013-05)Variable block-size motion estimation (VBSME) process occupies a major part of computation of an H.264 encoder, which is usually accelerated by bit-parallel hardware architectures with large I/O bit width to meet real-time ... -
Artifact reduction in occluded regions for motion compensated frame interpolation
Yazgan, Rıfat (Işık Üniversitesi, 2008)In this paper, we propose a new method to be used in occluded regions for motion compensated frame interpolation. Frame rate up conversion is becoming much more important when usage of digital video systems increase. ... -
Battle damage assessment based on self-similarity and contextual modeling of buildings in dense urban areas
Ateş, Hasan Fehmi; İmamoğlu, Mümin; Kahraman, Fatih (IEEE, 2016)Assessment of battle damages is significant both for tactical planning and for after-war relief efforts. In this study damaged buildings are detected using self-similarity descriptor in pre- and post-war satellite images. ... -
A bit-serial sum of absolute difference accelerator for variable block size motion estimation of H.264
Fatemi, Mohammad Reza Hosseiny; Ateş, Hasan Fehmi; Salleh, Rosli Bin (IEEE, 2009)Bit-serial architectures offer a number of attractive features over their bit-parallel counterparts such as smaller area cost, lower density interconnection, a reduced number of pins, higher clock frequency, simpler routing ... -
A cost-efficient bit-serial architecture for sub-pixel motion estimation of H.264/AVC
Fatemi, Mohammad Reza Hosseiny; Ateş, Hasan Fehmi; Salleh, Rosli Bin (IEEE Computer Soc, 2008)This paper presents a new VLSI architecture for sub-pixel motion estimation in H.264/AVC encoder. It is based on an interpolation free algorithm that causes a high level reduction on memory requirement, hardware resources ... -
Çok-hipotezli süperpikseller ile sahne bölütleme ve etiketleme
Ateş, Hasan Fehmi; Ak, Kenan Emir (IEEE, 2015-06-19)Süperpikseller son zamanlarda imge bölütleme ve sınıflandırma problemlerinde giderek önem kazanmaktadır. Sahne etiketlemede imge öncelikle bir süperpiksel algoritması ile görsel olarak tutarlı küçük parçalara bölütlenmekte; ... -
Decoder side true motion estimation for very low bitrate b-frame coding
Ateş, Hasan Fehmi; Çizmeci, Burak (IEEE, 2011)In H.264 standard, coding of motion vectors constitutes a significant portion of total bitrate especially at low bitrate regimes. This is because differential coding of motion vectors is inefficient when the bit budget is ... -
Decoder-side super-resolution and frame interpolation for improved H.264 video coding
Ateş, Hasan Fehmi (IEEE, 2013)In literature decoder-side motion estimation is shown to improve video coding efficiency of both H.264 and HEVC standards. In this paper we introduce enhanced skip and direct modes for H.264 coding using decoder-side ... -
Deep learning techniques for building density estimation from remotely sensed imagery
Süberk, Nilay Tuğçe (Işık Üniversitesi, 2019-04-05)This thesis is about point-wise estimation of building density on the remote sensing optical imageries by applying deep learning methods. The goal of the project is to reduce mean square error of the estimated density by ... -
Derin öznitelikler ile anlambilimsel görüntü bölütleme
Sünetci, Sercan; Ateş, Hasan Fehmi (Institute of Electrical and Electronics Engineers Inc., 2018-07-05)Derin evrişimsel sinir ağları (ESA) pek çok sınıflandırma probleminde olduğu gibi anlambilimsel görüntü bölütlemede de çok ciddi başarı göstermiştir. Fakat derin ağların eğitilmesi hem zaman alıcıdır hem de geniş bir eğitim ... -
Disaster damage assessment for buildings using self-similarity descriptor
Kahraman, Fatih; İmamoğlu, Mümin; Ateş, Hasan Fehmi (Institute of Electrical and Electronics Engineers Inc, 2015)Assessment of damage caused by an earthquake is significant for coordinating emergency response teams and planning emergency aid. In this study, a robust method is proposed for detecting damaged buildings using pre- and ... -
Disaster damage assessment of buildings using adaptive self-similarity descriptor
Ateş, Hasan Fehmi; Kahraman, Fatih; İmamoğlu, Mümin (2016-08)Assessment of damage caused by a disaster is significant for coordinating emergency response teams and planning emergency aid. In this letter, a robust method for rapid building damage assessment is proposed using pre- and ... -
Efficient quality of multimedia experience using perceptual quality metrics
Gaurav, Rahul; Ateş, Hasan Fehmi (Springer-Verlag Berlin, 2016)Although there are very few metrics which correlate well with the Human Visual System (HVS), most of them do not. We extensively studied about the Video Quality Assessment (VQA) of 2D svideos for enhancing the Quality of ... -
Enhanced low bitrate H.264 video coding using decoder-side super-resolution and frame interpolation
Ateş, Hasan Fehmi (SPIE-SOC Photo-Optical Instrumentation Engineers, 2013-07)Advanced inter-prediction modes are introduced recently in literature to improve video coding performances of both H.264 and High Efficiency Video Coding standards. Decoder-side motion analysis and motion vector derivation ... -
Evaluation of feature selection and encoding methods fpr superpixel image parsing
Sünetci, Sercan (Işık Üniversitesi, 2017-12-14)This thesis is about image parsing which is one of the important problems in computer vision. The goal of image parsing is segmentation of object and labeling of each object. Recently, a popular way of image segmentation ... -
Fast algorithm analysis and bit-serial architecture design for sub-pixel motion estimation in H.264
Fatemi, Mohammad Reza Hosseiny; Ateş, Hasan Fehmi; Salleh, Rosli Bin (World Scientific Publishing Company, 2010-12)The sub-pixel motion estimation (SME), together with the interpolation of reference frames, is a computationally extensive part of the H.264 encoder that increases the memory requirement 16-times for each reference frame. ... -
Fast inter-mode decision and selective quarter-pel refinement in H.264 video coding
Ateş, Hasan Fehmi (IEEE, 2008)In H.264 video coding standard, there exist several inter - prediction modes that use macroblock partitions with variable block sizes. Choosing a rate-distortion optimal coding mode for each macroblock is essential for the ... -
Gerçel ve karmaşık süzgeç öbeklerinin eşdalgacıklı tasarımı
Ateş, Hasan Fehmi; Orchard, Michael T.; Kanberoğlu, Berkay (IEEE, 2006-07-31)Bu bildiride, eşdalgacıklı tam geri çatma süzgeç öbekleri tasarlamak için, Parks-McClellan algoritması gibi tekniklerle üretilen enküçük-enbüyük optimal eşdalgacıklı kısıtsız süzgeçleri eşlemlemede kullanılan basit bir ...