Results 51 to 60 of about 978,152 (207)
Cybernetics and Information Technologies, 2023 Embedding the watermark is still a challenge in image watermarking. The watermark should not reduce the visual quality of the image being watermarked and hard to distinguish from its original.
Marjuni Aris +2 more
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IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.This study quantifies the impact of internal solitary wave–induced magnetic disturbances on underwater geomagnetic navigation performance in the South China Sea. A physics‐guided volumetric reconstruction framework integrating SWOT altimetry is developed to recover spatiotemporal subsurface magnetic fields.
Zhikuan Pan +6 more
wiley +1 more source
Semi-fragile watermark algorithm based on Walsh-Hadamard transformand and convolution coding
Tongxin xuebao, 2009 A semi-fragile watermark algorithm based on the Walsh-Hadamard transform and convolution coding was proposed. In this algorithm, the watermark content of the host image was extracted by differential coding and convolution coding respectively based on the
ZHAO Feng1, LI Jian2, LI Sheng-hong2
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Journal of Electrical and Computer Engineering, Volume 2026, Issue 1, 2026.The integration of reconfigurable intelligent surfaces (RIS) into multiple‐input multiple‐output (MIMO) systems offers transformative potential for enhancing spectral efficiency and mitigating channel impairments. However, efficient and accurate channel estimation (CE) remains a critical challenge due to multipath propagation, high dimensionality, and ...
Kevin M. Mwongera +3 more
wiley +1 more source
IEEE Access, 2022 Some conventional transforms such as Discrete Walsh-Hadamard Transform (DWHT) and Discrete Cosine Transform (DCT) have been widely used as feature extractors in image processing but rarely applied in neural networks.
Joonhyun Jeong +3 more
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Hardware structure for Walsh-Hadamard transforms
Electronics Letters, 1998 An efficient hardware structure is reported for the Walsh-Hadamard transform. Based on the radix-2 algorithm, the structure can be implemented with shift registers and controllable adder/subtracters for high processing throughput. Such an implementation is particularly suited to applications that require real-time operations and interface directly with
null Bi, B.G. Evans
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Comparing GFDM With OFDM for Use in 6G Communication From a New Perspective
Journal of Electrical and Computer Engineering, Volume 2026, Issue 1, 2026.The most important challenges facing 6G communication systems are the large amount of data and low latency as compared to previous generations. Therefore, it has become necessary to use advanced technologies to meet the requirements of 6G wireless communication systems.
Mohammed Azher Therib +2 more
wiley +1 more source
Multiallelic Walsh transforms [PDF]
, 2023 A closed formula multiallelic Walsh (or Hadamard) transform is introduced. Basic results are derived, and a statistical interpretation of some of the resulting linear forms is ...
Greene, Devin
core
Designing superior crosses in cassava using genomic mating to boost yield and genetic diversity
Crop Science, Volume 65, Issue 6, November/December 2025.Abstract Identifying superior cassava (Manihot esculenta Crantz) crosses through phenotypic evaluations is costly and inefficient due to cassava's long breeding cycles and low flowering rates. In this study, we applied genomic mate selection and optimum contribution selection using additive, dominance, and directional dominance models to enhance ...
Paulo Henrique Ramos Guimarães +4 more
wiley +1 more source
Matrix Factorization and Some Fast Discrete Transforms
AxiomsIn this paper, three discrete transforms related to vector spaces over finite fields are studied. For our purposes, and according to the properties of the finite fields, the most suitable transforms are as follows: for binary fields, this is the Walsh ...
Iliya Bouyukliev +2 more
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