Results 11 to 20 of about 133,828 (342)
DCT-Former: Efficient Self-Attention with Discrete Cosine Transform [PDF]
Journal of Scientific Computing, 2022 Since their introduction the Transformer architectures emerged as the dominating architectures for both natural language processing and, more recently, computer vision applications.
Carmelo Scribano +3 more
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TextDCT: Arbitrary-Shaped Text Detection via Discrete Cosine Transform Mask [PDF]
IEEE transactions on multimedia, 2022 Arbitrary-shaped scene text detection is a challenging task due to the variety of text changes in font, size, color, and orientation. Most existing regression based methods resort to regress the masks or contour points of text regions to model the text ...
Yuchen Su +6 more
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Automated Surface Texture Analysis via Discrete Cosine Transform and Discrete Wavelet Transform [PDF]
Precision engineering, 2022 Surface roughness and texture are critical to the functional performance of engineering components. The ability to analyze roughness and texture effectively and efficiently is much needed to ensure surface quality in many surface generation processes ...
Melih C. Yesilli +3 more
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Lightweight Denoising Autoencoder Design for Noise Removal in Electrocardiography
IEEE Access, 2022 This study proposes two denoising autoencoder models with discrete cosine transform and discrete wavelet transform, to remove electrode motion artifacts in noisy electrocardiography. Initially, the discrete cosine transform and discrete wavelet transform
Ming-Hwa Sheu +5 more
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Recognition of Ultrasound Images of Breast Cancer Based on Discrete Sinc Transform and Deep Learning [PDF]
Egyptian Journal of Cancer and Biomedical Research, 2022 Background: : The most common cause of cancer-related death among women all over the world is breast cancer. Altough ultrasound emaging I useful in diagnosis of the patients, itsaccuracy needs more improvement.
Mohamed Azmy
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DCT-Mask: Discrete Cosine Transform Mask Representation for Instance Segmentation [PDF]
Computer Vision and Pattern Recognition, 2020 Binary grid mask representation is broadly used in instance segmentation. A representative instantiation is Mask R-CNN which predicts masks on a 28×28 binary grid.
Xing Shen +7 more
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The Discrete Cosine Transform on Triangles [PDF]
ICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2019 The discrete cosine transform is a valuable tool in analysis of data on undirected rectangular grids, like images. In this paper it is shown how one can define an analogue of the discrete cosine transform on triangles. This is done by combining algebraic signal processing theory with a specific kind of multivariate Chebyshev polynomials.
Bastian Seifert, Knut Hüper
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Approximate calculation of 8-point DCT for various scenarios of practical applications
EURASIP Journal on Image and Video Processing, 2021 In this paper, based on the parametric model of the matrix of discrete cosine transform (DCT), and using an exhaustive search of the parameters’ space, we seek for the best approximations of 8-point DCT at the given computational complexities by taking ...
Dariusz Puchala
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Generalized Discrete Cosine Transform [PDF]
2009 Pacific-Asia Conference on Circuits, Communications and Systems, 2009 The discrete cosine transform (DCT), introduced by Ahmed, Natarajan and Rao, has been used in many applications of digital signal processing, data compression and information hiding. There are four types of the discrete cosine transform. In simulating the discrete cosine transform, we propose a generalized discrete cosine transform with three ...
Jianqin Zhou, Ping Chen
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Comparative analysis of chosen transforms in the context of de-noising harmonic signals [PDF]
Biuletyn Wojskowej Akademii Technicznej, 2015 In the article, comparison of popular transforms used i.a. in denoising harmonical signals was presented. The division of signals submitted to mathematical analysis was shown and chosen transforms such as Short Time Fourier Transform, Wigner-Ville ...
Artur Zacniewski
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