Results 11 to 20 of about 152,070 (321)
Fighting Deepfakes by Detecting GAN DCT Anomalies [PDF]
Journal of Imaging, 2021 To properly contrast the Deepfake phenomenon the need to design new Deepfake detection algorithms arises; the misuse of this formidable A.I. technology brings serious consequences in the private life of every involved person.
Oliver Giudice +2 more
semanticscholar +1 more source
DCT-Mask: Discrete Cosine Transform Mask Representation for Instance Segmentation [PDF]
Computer Vision and Pattern Recognition, 2020 Binary grid mask representation is broadly used in instance segmentation. A representative instantiation is Mask R-CNN which predicts masks on a 28×28 binary grid.
Xing Shen +7 more
semanticscholar +1 more source
An Improved Image Watermarking by Modifying Selected DWT-DCT Coefficients
IEEE Access, 2021 Digital images can be easily copied or manipulated by irresponsible persons. The right property needs to be secured and protected from illegal copies and piracy. Digital watermarking is one of the solutions to protect the intellectual property of digital
F. Ernawan +2 more
semanticscholar +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
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