Results 51 to 60 of about 114 (95)
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The Finite Ridgelet Transform for Defeat Detection of Quill
Advanced Materials Research, 2011A defeat detection method for quill using the finite ridgelet transform is mentioned. This method reduce the average gray values of quill and analytic statistics methods are used in ridgelet transform according to points of quill. After ridgelet transform the linear singularity is further highlighted and the quantization errors caused by cutting image ...
Ming Jun Feng
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Digital image forensics with finite ridgelet transform
2009 IEEE 17th Signal Processing and Communications Applications Conference, 2009With the use of advanced computer graphics rendering software, very successful photorealistic images can be generated. Therefore, it may be hard to discriminate the photographic images from the photorealistic ones. In this work, we propose to use the statistics obtained from the ridgelet transform to distinguish the photographic and photorealistic ...
Levent Ozparlak
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Algorithm of image fusion based on finite ridgelet transform
Proceedings of SPIE, 2007Finite ridgelet transform (FRIT) overcomes the weakness of wavelet transform representing in two or higher dimensions and FRIT can efficiently represent the singularity of linear in image. When FRIT is applied to image fusion, the characters of original images can be effectively extracted and more important information is preserved. In this paper, we
Kun Liu +3 more
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Patch based image denoising using the finite ridgelet transform for less artifacts
Journal of Visual Communication and Image Representation, 2014Abstract Patch based denoising methods have proved to lead to state-of-the-art results. However, in contrast with intensive pursuing of higher peak signal to noise ratio (PSNR), less attention is paid to visual quality improvement of denoised images. In this paper, we first compare the denoising performance in edge and smooth regions.
Ngai Fong Law, Yun-Xia Liu
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Arbitrarily Shape Object-based Video Coding Technology by Finite Ridgelet Transform
2018 IEEE International Conference on Information and Automation (ICIA), 2018Video object coding is one of the most important functions of MPEG4. In this paper, we propose a new object based finite ridgelet transform for arbitrary shape video coding, including static and video objects. The method uses the shape adaptive finite ridgelet transform (SA Ridgelet transform) for the object coding, and uses the more efficient lifting ...
Zhihua Xie, Zhenghua Shu
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A novel algorithm of image fusion using finite ridgelet transform
SPIE Proceedings, 2006In this paper, a novel image fusion method based on the finite ridgelet transform(FRIT). Firstly, the problem that wavelet transform could not efficiently represent the singularity of linear/curve in image processing is analyzed. Secondly, the principal of FRIT and its good performance in expressing the singularity of two or higher dimensional are ...
Qiguang Miao, Baoshu Wang
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Video Shot Boundary Detection Using Finite Ridgelet Transform Method
Advances in Intelligent Systems and Computing, 2014Video shot transition identification constitutes an important computer vision research field, being applied, as an essential step, in many digital video analysis domains: video scene detection, video compression, video indexing, video content retrieval and video object tracking.
Parul S. Arora Bhalotra +1 more
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Finite Ridgelet Transform for low bit rate image compression
2008 9th International Conference on Signal Processing, 2008The finite Ridgelet transform (FRIT) was widely used as a sparse representation for images that with linear singularities. Unfortunately, the ldquowrap aroundrdquo effect restricts its application in image compression and denoising. In this paper, The MAP estimator is applied to the coefficients in the finite Radon transform (FRAT) in order to select ...
Yajie Wei
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An Approximate Finite Ridgelet Transform Algorithm for SAR Image Segmentation
2006 8th international Conference on Signal Processing, 2006The finite ridgelet transform proposed by Donoho has successful application in edge detection and segmentation of images with high-noise, but it has a drawback which is due to annoying "wrap-around" effect to the finite Radon transform. As a result, it may also produce "alias" edges and "holes" in the reconstructed image.
Mingyi He
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Orthonormal finite ridgelet transform coding using an EBCOT-like algorithm
2012 IEEE International Conference on Information and Automation, 2012In this paper, an image coding algorithm based on a rate-distortion optimized orthonormal finite ridgelet transform (OFRIT) decomposition and on a block-partitioning coding scheme which quantizes each subband separately is proposed. In this way, our algorithm naturally overcomes the difficulty in defining parent-child relationships for wavelet-based ...
Lixin Gan, Zhenghua Shu
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