Results 11 to 20 of about 113,946 (294)
A new watermarking scheme for digital videos using DCT
Open Computer Science, 2022 With the advent of high-speed broadband Internet access, the need to protect digital videos is highly recommended. The main objective of this study is to propose an adaptive algorithm for watermarked digital videos in the frequency domain based on ...
Al-Gindy Ahmed +5 more
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RECURSIVE HIERARCHICAL CLUSTERING FOR HYPERSPECTRAL IMAGES [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020 Partition based clustering techniques are widely used in data mining and also to analyze hyperspectral images. Unsupervised clustering only depends on data, without any external knowledge.
S. May
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Jurnal Penelitian Humaniora, 2020 Refusing is a part of commissive speech acts. Refusing is a face-threatening act (FTA) that needs a good pragmatic competence since it probably gives risk to the interlocutor's positive or negative face.
Lintang Indah Ayu Respati Dewi +2 more
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The Use of Two Transform Methods in Fingerprints Recognition [PDF]
مجلة جامعة الانبار للعلوم الصرفة, 2012 Finger prints are the oldest and most widely used form of biometric identification. Despite the widespread use of fingerprints, there is little statistical theory on the uniqueness of fingerprint minutiae.
Baraa Tareq Hammad +3 more
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Hematology, Transfusion and Cell Therapy, 2021 Resumo: Levantamento do quantitativo de hemocomponentes transfundidos no Pós-operatório de pacientes submetidos à cirurgia de grande porte e que se encontram alocados na Unidade de Terapia Intensiva de um Hospital Filantrópico de Brasília.
DCT Leite, LEB Oliveira, MRM Soares
doaj +1 more source
A Low-Cost Multi-Sized HEVC Core Transform Using Time-Multiplexed DCT Architectures [PDF]
Journal of Operation and Automation in Power Engineering, 2022 High Efficiency Video Coding (HEVC) is one of the latest coding standards targeting high-resolution video contents. Due to the high complexity of the existing hardware implementation, this paper presents the low-cost and efficient DCT architectures for ...
R. Younesi, J. Rastegar, M. Rastgarpour
doaj +1 more source
Recovering Missing Coefficients in DCT-Transformed Images [PDF]
, 2011 A general method for recovering missing DCT coefficients in DCT-transformed images is presented in this work. We model the DCT coefficients recovery problem as an optimization problem and recover all missing DCT coefficients via linear programming.
Karrenbauer, Andreas +3 more
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DCT-Based Iris Recognition [PDF]
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2007 This paper presents a novel iris coding method based on differences of discrete cosine transform (DCT) coefficients of overlapped angular patches from normalized iris images. The feature extraction capabilities of the DCT are optimized on the two largest publicly available iris image data sets, 2,156 images of 308 eyes from the CASIA database and 2,955
Donald M, Monro +2 more
openaire +2 more sources
A Coding-Based Steganography Using Multiple Frequency Domains [PDF]
مجلة جامعة الانبار للعلوم الصرفة, 2009 :In this paper, a new technique for hiding text in a bitmap images will be present. The technique based on using an index of the dictionary representing the characters of the secret messages instead of the characters themselves.
Omed Salim Khalind +2 more
doaj +1 more source
Maximum likelihood based estimation of frequency and phase offset in DCT OFDM systems under non-circular transmissions: algorithms, analysis and comparisons [PDF]
, 2008 Recently, the advantages of the discrete cosine transform (DCT) based orthogonal frequency-division multiplexing (OFDM) have come to the light. We thus consider DCT- OFDM with non-circular transmission (our results cover circular transmission as well ...
Cui, Tao +3 more
core +1 more source