Results 51 to 60 of about 8,292 (164)

Structural priors represented by discrete cosine transform improve EIT functional imaging. [PDF]

open access: yesPLoS One, 2023
Chen R   +5 more
europepmc   +1 more source

CORRELATION ANALYSIS OF DISCRETE COSINE TRANSFORM COEFFICIENTS OF IMAGE BLOCKS

open access: yesРадіоелектронні і комп'ютерні системи, 2016
Task of lossy image compression based on discrete cosine transform (DCT) is considered. For image blocks having size 8x8 pixels (it corresponds to division of images on blocks in JPEG standard) presence of correlation between different DCT coefficients ...
А. И. Мирошниченко
doaj   +1 more source

Research of Computer Desktop Image Compression Clustering Algorithm

open access: yesChemical Engineering Transactions, 2016
The basis for the image algorithm is the Discrete Cosine Transform (DCT) which extracts spatial frequency information from the spatial amplitude samples.
R.H. Qiao
doaj   +1 more source

Medical Image Watermarking in Sub-block Three-dimensional Discrete Cosine Transform Domain [PDF]

open access: yesInternational Journal Bioautomation, 2016
Digital watermarking can be applied to protection of medical images privacy, hiding of patient's diagnosis information and so on. In order to improve the ability of resisting geometric attacks, a new watermarking algorithm for medical volume data in sub ...
Baoru Han, Jingbing Li
doaj  

Repetitive-Based Control for Selective Active Filters Using Discrete Cosine Transform

open access: yesEletrônica de Potência, 2004
This paper proposes selective harmonic current compensation using a closed-loop repetitive controller. The controller is based on measuring the line currents. It performs the compensation of specific harmonics selected by a DCT (Discrete Cosine Transform)
Fernando P. Marafão   +3 more
doaj   +1 more source

Calculation Scheme Based on a Weighted Primitive: Application to Image Processing Transforms

open access: yesEURASIP Journal on Advances in Signal Processing, 2007
This paper presents a method to improve the calculation of functions which specially demand a great amount of computing resources. The method is based on the choice of a weighted primitive which enables the calculation of function values under the scope ...
Gregorio de Miguel Casado   +3 more
doaj   +1 more source

Analyzing Laser Speckle Pattern Using the Discrete Cosine Transform

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2017
The use of Cosine transform to analyze the model-noise pattern alteration with different vibration model applied on multimode fiber optics are studied.
Inbethaq Mohammed Ali Abdul-Ameer
doaj  

Automatic melanoma detection using discrete cosine transform features and metadata on dermoscopic images

open access: yesJournal of King Saud University: Computer and Information Sciences
Machine learning contributes in improving the accuracy of melanoma detection. There are extensive studies in classic and deep learning-based approaches for melanoma detection in the literature.
Shamim Yousefi   +5 more
doaj   +1 more source

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