Text-image watermarking based on integer wavelet transform (IWT) and discrete cosine transform (DCT)
Applied Computing and Informatics, 2019 Text-images still have a great importance, despite the spread of electronic texts. Text-images are protected using digital watermarking. This paper proposes a watermarking method applied to text-images.
Reem A. Alotaibi, Lamiaa A. Elrefaei
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Computation of Hilbert Transform via Discrete Cosine Transform
Journal of Signal and Information Processing, 2010 Hilbert transform (HT) is an important tool in constructing analytic signals for various purposes, such as envelope and instantaneous frequency analysis, amplitude modulation, shift invariant wavelet analysis and Hilbert-Huang decompo-sition. In this work we introduce a method for computation of HT based on the discrete cosine transform (DCT).
Olkkonen, H. +3 more
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Infrared Small Target Detection Based on Spatial-Temporal Enhancement Using Quaternion Discrete Cosine Transform [PDF]
, 2019 Ping Zhang +4 more
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DCT-ViT: High-Frequency Pruned Vision Transformer With Discrete Cosine Transform
IEEE AccessTransformers have demonstrated notable efficacy in computer vision, extending beyond their initial success in natural language processing. The application of vision transformers (ViTs) to resource-constrained mobile and edge devices is hampered by their ...
Jongho Lee, Hyun Kim
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CORRELATION ANALYSIS OF DISCRETE COSINE TRANSFORM COEFFICIENTS OF IMAGE BLOCKS
Радіоелектронні 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
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Structural priors represented by discrete cosine transform improve EIT functional imaging. [PDF]
PLoS One, 2023 Chen R +5 more
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Hyperspectral holography and spectroscopy: computational features of inverse discrete cosine transform [PDF]
, 2019 Vladimir Katkovnik +2 more
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Research of Computer Desktop Image Compression Clustering Algorithm
Chemical 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
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Medical Image Watermarking in Sub-block Three-dimensional Discrete Cosine Transform Domain [PDF]
International 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
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Repetitive-Based Control for Selective Active Filters Using Discrete Cosine Transform
Eletrônica 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
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