Results 161 to 170 of about 5,751 (196)

The monogenic curvelet transform

2010 IEEE International Conference on Image Processing, 2010
In this article, we reconsider the continuous curvelet transform from a signal processing point of view. We show that the analyzing elements of the curvelet transform, the curvelets, can be understood as analytic signals in the sense of the partial Hilbert transform.
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ECG steganography using curvelet transform

Biomedical Signal Processing and Control, 2015
Abstract ECG steganography allows secured transmission of patient data that are tagged to the ECG signals. Signal deterioration leading to loss of diagnosis information and inability to retrieve patient data fully are the major challenges with ECG steganography.
S. Edward Jero, Palaniappan Ramu, S. Ramakrishnan   +2 more
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Curvelet transform based object tracking

2010 International Conference on Computer and Communication Technology (ICCCT), 2010
In this paper, we have proposed a new object tracking method in video sequences which is based on curvelet transform. The wavelet transform has widely been used for object tracking purpose, but it cannot well describe curve discontinuities. We have used curvelet transform for tracking.
Swati Nigam, Ashish Khare
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Curvelet transform on tempered distributions

Asian-European Journal of Mathematics, 2015
The curvelet transform of a tempered distribution is defined as an infinitely differentiable function of (a, b, θ) with a polynomial growth in b. An inversion formula of the curvelet transform on tempered distributions is also obtained.
Subash Moorthy, R., Roopkumar, R.
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Ionograms denoising via curvelet transform

Advances in Space Research, 2013
Abstract Ionograms are used to obtain important information of the ionosphere. Unfortunately, ionograms are always contaminated by several kinds of noises. In this paper, curvelet transform denoising algorithm is used to obtain high-quality ionograms.
Ziwei Chen, Shun Wang, Guangyou Fang, Jinsong Wang   +3 more
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Curvelet Transform Based Logo Watermarking

2007
Apart From Existing Representation Such As DCT, Wavelets, And Steerable Pyramids, Recently, Curvelet Is Introduced As A New Multiscale Presentation Suited For Images Which Are Smooth Away From Discontinuities Across Cuvers. In This Paper We Propose A New Watermarking Method Based On Curvelet Domain.
Thai Duy Hien, Kazuyoshi Miyara, Yasunori Nagata, Zensho Nakao, Yen Wei Chen   +4 more
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Coherence cube based on curvelet transform

SEG Technical Program Expanded Abstracts 2008, 2008
The C3 coherence cube is a new seismic attribute, which has higher underground structural resolution than normal amplitude cube. Curvelet analysis is a better tool of timefrequency analysis than Wavelet analysis, and it has a very good time-frequency decomposition effect.
Guangzhi Zhang, Jingjing Zheng, Xingyao Yin, Yong Pu   +3 more
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Palm vein recognition using curvelet transform

Proceedings of the 27th Conference on Image and Vision Computing New Zealand, 2012
Palm vein is a promising personal identification method for human recognition. To improve the accuracy and efficiency of the existing palm vein systems, a novel algorithm based on curvelet transform is proposed. The technique utilizes the curvelet transform to extract curve-like features from vein patterns and provides optimally sparse representations ...
Junwen Sun, Waleed Abdulla
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Mammographic Feature Enhancement by Curvelet Transform

Applied Mechanics and Materials, 2011
This paper presents an approach for digital mammograms enhancement using curvelet transform. The curvelet transform breaks the limitation of the wavelet transform and provides efficient representation of smooth objects with discontinuities along curves.
Qin Xue, Zhuang Zhi Yan, Sheng Qian Wang
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Curvelet transform with learning-based tiling

Signal Processing: Image Communication, 2017
Compact signal and image representations are of crucial importance in a variety of application areas. Wavelet and wavelet-like transforms typically divide the frequency plane in a systematic non-adaptive approach. In this paper, we propose a learning-based method for adapting frequency domain tiling using the curvelet transform as the basis algorithm ...
Hasan Al-Marzouqi, Ghassan AlRegib
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