Results 11 to 20 of about 10,977 (213)

FACE RECOGNITION USING DEEP NEURAL NETWORKS WITH THE COMBINATION OF DISCRETE WAVELET TRANSFORM, STATIONARY WAVELET TRANSFORM, AND DISCRETE COSINE TRANSFORM METHODS

open access: yesJUTI: 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
doaj   +1 more source

A Hybrid Model of 2d-DCT and 2d-Mycielski Algorithm for Hourly Global Solar Irradiation

open access: yesAdvances 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.
doaj   +1 more source

INVISIBLE WATERMARKING CITRA DIGITAL MENGGUNAKAN KOMBINASI METODE DISCRETE COSINE TRANSFORM DAN DISCRETE WAVELET TRANSFORM

open access: yesJurnal 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
doaj   +1 more source

Comparison of Image Compressions: Analog Transformations

open access: yesProceedings, 2020
A comparison between the four most used transforms, the discrete Fourier transform (DFT), discrete cosine transform (DCT), the Walsh–Hadamard transform (WHT) and the Haar-wavelet transform (DWT), for the transmission of analog images, varying their ...
Jose Balsa
doaj   +1 more source

ADAPTIVE THREE-DIMENSIONAL DISCRETE COSINE TRANSFORM OF TRANSPORT IMAGES [PDF]

open access: yesНаучно-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
doaj   +1 more source

Multi-Resolution Discrete Cosine Transform Fusion Technique Face Recognition Model

open access: yesData, 2022
This work presents a Multi-Resolution Discrete Cosine Transform (MDCT) fusion technique Fusion Feature-Level Face Recognition Model (FFLFRM) comprising face detection, feature extraction, feature fusion, and face classification.
Bader M. AlFawwaz   +3 more
doaj   +1 more source

The Discrete Cosine Transform [PDF]

open access: yesSIAM Review, 1999
In this paper the author derives the Discrete Cosine Transform (DCT) bases as eigenvectors of a symmetric second-difference matrix with certain boundary conditions. The type of boundary condition (Dirichlet or Neumann, centered at a meshpoint or a midpoint) determines the applications that are appropriate for each transform.
openaire   +2 more sources

DEEP GENERATIVE DISCRETE COSINE TRANSFORM FOR SPECTRAL IMAGE PROCESSING

open access: yesICTACT Journal on Image and Video Processing, 2022
The ever-increasing number of publications and applications in the field of cross-spectral image processing has led to the area receiving greater focus than it previously had.
Mary Florida   +4 more
doaj   +1 more source

Image Compression Based on a Partially Rotated Discrete Cosine Transform With a Principal Orientation

open access: yesIEEE Access, 2021
Image transforms are necessary for image and video compression. Analytic transforms are powerful in compacting natural signals for wider exploitation. Various methods have been introduced to represent such data as a small number of bases, and several of ...
Gihwan Lee, Yoonsik Choe
doaj   +1 more source

Generalized Discrete Cosine Transform [PDF]

open access: yes2009 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
openaire   +1 more source

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