Results 51 to 60 of about 26,801 (192)
Image Watermarking Using DWT_DCT [PDF]
Engineering and Technology Journal, 2010 Digital watermarking has been developed to protect digital images fromillegal manipulation. Discrete wavelet Transform (DWT) and Discrete Cosine Transform (DCT) are techniques used for digital watermarking.
Bassim Abdulbaki Jumaa, Arwa Aladdin
doaj +1 more source
Conception of Voltage Interruption Signal using Continuous Wavelet, Discrete Wavelet, and Wavelet Packet Analysis [PDF]
E3S Web of ConferencesThis paper focuses on conception of voltage interruption signal in different domains. According to IEEE Standard 1159, Interruption is categorised under short-duration voltage variations in the description of classification of ‘Power quality Disturbances’
Priyadarshini M. S. +3 more
doaj +1 more source
Evaluation of transform based image coders, using different transforms and techniques in the transform domain [PDF]
, 2004 This paper addresses the most relevant aspects of lossy image coding techniques, and presents an evaluation study on this subject, using several transforms and different methods in the transform domain.
Roque, Bruno, Salvado, José
core
Complexity Reduction and Fast Algorithm for 2-D Integer Discrete Wavelet Transform Using Symmetric Mask-Based Scheme [PDF]
[[abstract]]Wavelet coding has been shown to be better than discrete cosine transform (DCT) in image/video processing. Moreover, it has the feature of scalability, which is involved in modern video standards. This work presents novel algorithms, namely 2-
Hsia, Chih-Hsien
core +1 more source
TFT-LCD Mura Defect Detection Using Wavelet and Cosine Transforms
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2008 Mura defects in LCM panel of TFT-LCD have the properties of local low contrast and luminance variation without a clear contour on a uniformly produced surface.
Shang-Liang CHEN, Shang-Ta CHOU
doaj +1 more source
Multi - Wavelet Domain Reconstruction of Lost Blocks in Wireless Image Transmission [PDF]
Engineering and Technology Journal, 2005 bstract A fast scheme for multi - wavelet domain interpolation of lost image blocks in wireless image transmission is proposed in this paper . Instead of using common retransmission query protocols , the lost block is reconstructed in the multi - wavelet
Waleed Mahmoud +2 more
doaj +1 more source
Bitlis Eren Üniversitesi Fen Bilimleri Dergisi, 2021 The aim of this study is to propose a method using discrete wavelet transform and extreme learning machine (DWT-ELM) in classification of communication signals. Six types of analog modulated signals as “AM”, “DSB”, “USB”, “LSB”, “FM” and “PM” are used for classification and analog modulated signal dataset consists of 1920 signals.
openaire +4 more sources
Wavelet Integrated CNNs for Noise-Robust Image Classification
, 2020 Convolutional Neural Networks (CNNs) are generally prone to noise interruptions, i.e., small image noise can cause drastic changes in the output. To suppress the noise effect to the final predication, we enhance CNNs by replacing max-pooling, strided ...
Guo, Sheng +3 more
core +1 more source
IEEE Access, 2019 In this paper, we present a 2D Logistic-Sine-Cosine map (2D-LSCM) which is based on the classical 2D Logistic, Sine and Cosine maps. Performance analysis shows that it has larger chaotic range, bigger Lyapunov exponent and more complex chaotic behavior ...
Huiqing Huang
doaj +1 more source
Computer Assisted Methods in Engineering and Science, 2022 The paper demonstrates the potential of Discrete Wavelet Transform (DWT) in damage detection. Efficiency of the method is demonstrated by the way of examples. In this study the numerically simulated static and dynamic experiments were used.
Anna Knitter-Piątkowska +2 more
doaj