Results 21 to 30 of about 1,435,821 (287)
Approximate calculation of 8-point DCT for various scenarios of practical applications
EURASIP Journal on Image and Video Processing, 2021 In this paper, based on the parametric model of the matrix of discrete cosine transform (DCT), and using an exhaustive search of the parameters’ space, we seek for the best approximations of 8-point DCT at the given computational complexities by taking ...
Dariusz Puchala
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Comparative analysis of chosen transforms in the context of de-noising harmonic signals [PDF]
Biuletyn Wojskowej Akademii Technicznej, 2015 In the article, comparison of popular transforms used i.a. in denoising harmonical signals was presented. The division of signals submitted to mathematical analysis was shown and chosen transforms such as Short Time Fourier Transform, Wigner-Ville ...
Artur Zacniewski
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Generalized Discrete Cosine Transform [PDF]
2009 Pacific-Asia Conference on Circuits, Communications and Systems, 2009 The discrete cosine transform (DCT), introduced by Ahmed, Natarajan and Rao, has been used in many applications of digital signal processing, data compression and information hiding. There are four types of the discrete cosine transform. In simulating the discrete cosine transform, we propose a generalized discrete cosine transform with three ...
Jianqin Zhou, Ping Chen
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A Hybrid Robust Image Watermarking Method Based on DWT-DCT and SIFT for Copyright Protection
Journal of Imaging, 2021 In this paper, a robust hybrid watermarking method based on discrete wavelet transform (DWT), discrete cosine transform (DCT), and scale-invariant feature transformation (SIFT) is proposed.
Mohamed Hamidi +3 more
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JUTI: Jurnal Ilmiah Teknologi Informasi, 2020 Personal identification can be done by using face, fingerprint, palm prints, eye’s retina, or voice recognition which commonly called as biometric methods. Face recognition is the most popular and widely used among those biometric methods. However, there
Afrizal Laksita Akbar +2 more
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ADAPTIVE THREE-DIMENSIONAL DISCRETE COSINE TRANSFORM OF TRANSPORT IMAGES [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2019 Subject of Research. The paper presents encoding and decoding method for video information obtained from video surveillance cameras in transport. The method is based on the usage of adaptive three-dimensional discrete cosine transform.
Y. A. Hasan, S. S. Fahmi
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, 2021 A low-density parity-check (LDPC) coded single-carrier frequency-division multiple access (SC-FDMA) system is proposed for effective image transmission.
Saha, Ritu +9 more
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A Hybrid Model of 2d-DCT and 2d-Mycielski Algorithm for Hourly Global Solar Irradiation
Advances in Electrical and Computer Engineering, 2020 In this work, hourly solar irradiation is defined as a two-dimensional discrete signal. This two-dimensional discrete signal is modeled by a novel hybrid approach, which includes both deterministic and stochastic processes.
FIDAN, M., SERTSOZ, M., KURBAN, M.
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Jurnal Nasional Pendidikan Teknik Informatika (JANAPATI), 2020 Banyaknya penyebaran citra digital menyebabkan maraknya tindakan seperti duplikasi dan penyebaran data secara ilegal, serta penyalahgunaan Hak akan Kekayaan dan Intelektual (HAKI).
Fitria Ilhami Ikromina
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An improved architecture for the adaptive discrete cosine transform [PDF]
, 1996 This paper presents a new approach to the efficient realisation of the discrete cosine transform for the specific case of interlaced image sequence coding.
Martin, F, Bull, DR
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