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Complex Wavelet Structural Similarity: A New Image Similarity Index
IEEE Transactions on Image Processing, 2009We introduce a new measure of image similarity called the complex wavelet structural similarity (CW-SSIM) index and show its applicability as a general purpose image similarity index. The key idea behind CW-SSIM is that certain image distortions lead to consistent phase changes in the local wavelet coefficients, and that a consistent phase shift of the
Alan Bovik, Mia K Markey, Zhou Wang
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An empirical assessment of the structural similarity index
2009 Canadian Conference on Electrical and Computer Engineering, 2009This research evaluates the performance of the structural similarity index. An increasingly popular image quality metric, the structural similarity index is essentially a measure of the statistical correlation of two images. Its alleged strengths and advantages are widely acclaimed.
Richard Dosselmann, Xue Dong Yang
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Fast structural similarity index algorithm
Journal of Real-Time Image Processing, 2010The development of real-time image quality assessment algorithms is an important direction on which little research has focused. This paper presents a design of real-time implementable full-reference image quality algorithms based on the SSIM index [2] and multi-scale SSIM (MS-SSIM) index [3].
Ming-Jun Chen, Alan C. Bovik
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The Export Similarity Index: Some Structural Tests
The Economic Journal, 1983In the September I98I issue of this JOURNAL, Richard Pomfret examines the similarity of non-oil, non-manufactured exports to the EEC from the three recent or prospective entrants (Spain, Greece and Portugal hereafter 'the Three') and from eleven other non-member Mediterranean countries., The technique used by Pomfret is an application of the newly ...
Kellman, Mitchell, Schroder, Tim
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A local intensity adaptive structural similarity index
2012 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2012Existing structural similarity (SSIM) index comprises of one term on luminance comparison and the other term on contrast and structure comparison. In this paper, the SSIM index is first improved by introducing three weighting factors to the second term such that it is adaptive to local intensities of two images to be compared. The improved SSIM (iSSIM)
Zhengguo Li
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Design of Linear Equalizers Optimized for the Structural Similarity Index
IEEE Transactions on Image Processing, 2008We propose an algorithm for designing linear equalizers that maximize the structural similarity (SSIM) index between the reference and restored signals. The SSIM index has enjoyed considerable application in the evaluation of image processing algorithms. Algorithms, however, have not been designed yet to explicitly optimize for this measure. The design
Sumohana S. Channappayya +3 more
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INDEX-BASED SIMILARITY SEARCH FOR PROTEIN STRUCTURE DATABASES
Journal of Bioinformatics and Computational Biology, 2004We propose new methods for finding similarities in protein structure databases. These methods extract feature vectors on triplets of SSEs (Secondary Structure Elements) of proteins. The feature vectors are then indexed using a multidimensional index structure.
Orhan Çamoglu +2 more
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Influence of the Smooth Region on the Structural Similarity Index
2009The Structural Similarity (SSIM) Index is a very popular image quality assessment algorithm due to its good performance and simple calculation. This paper analyzes the influence of the smooth region on the performance of SSIM. It was found out that SSIM tends to depend on the quality of the smooth region to assess the quality of the whole image.
Songnan Li, King Ngi Ngan
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Design of synthesis filter banks for the structural similarity index
2013 IEEE International Conference on Image Processing, 2013The optimal synthesis filter bank (FB) is designed for a given analysis FB by using the structural similarity (SSIM) criteria. Under the assumption that the source signal is a wide sense stationary (WSS) process with known power spectral density (PSD), that the noise is Gaussian white, and that the filter length is equal to the decimation number, the ...
Li Chai 0001 +2 more
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Envelope parameter calculation of similarity indexing structure
1998Similarity Indexing is very important for content-based retrieval on large multimedia databases, and the “tightness” of data set envelope is a factor that influences the performance of index. For equidistant envelope (bounding sphere), calculation of envelope is somewhat difficult because of the complexity of direct computation in high dimension space.
Xuesheng Bai, Guangyou Xu, Yuanchun Shi
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