نتایج جستجو برای: dwt

تعداد نتایج: 3445  

Journal: :international journal of maritime technology 0
dhara shah cept university, kasturbhai lalbhai campus, university road, navrangpura, ahmedabad viral shah global marine engineering consultancy, ahmedabad mehul patel patel global marine engineering consultancy, ahmedabad

berthing force is a critical dynamic lateral force in the design of berthing structures, having equal relevance when compared to seismic forces. besides, the construction cost of berthing structures is very high which can be optimized by calculating precise design berthing energy on fender and selecting optimum fender system. in the present study, design berthing energy of bulk carriers having ...

Journal: :Hydrology Research 2022

Abstract Groundwater is often one of the significant natural sources freshwater supply, especially in arid and semi-arid regions, paramount importance. This study provides a new high accurate technique for forecasting groundwater level (GWL). The artificial intelligence (AI) models include neural network (ANN) multi-layer perceptron (MLP) radial basis function (RBF), adaptive neural-fuzzy infer...

Journal: :IEICE Transactions 2008
Sheng-Fuu Lin Chien-Kun Su

In this paper, a new lifting-based shape-direction-adapti discrete wavelet transform (SDA-DWT) which can be used for arbitraril shaped segments is proposed. The SDA-DWT contains three major techniques: the lifting-based DWT, the adaptive directional technique, and the concept of object-based compression in MPEG-4. With SDA-DWT, the number of transformed coefficients is equal to the number of pi...

Dhara Shah, Mehul Patel Patel, Viral Shah,

Berthing force is a critical dynamic lateral force in the design of berthing structures, having equal relevance when compared to seismic forces. Besides, the construction cost of berthing structures is very high which can be optimized by calculating precise design berthing energy on fender and selecting optimum fender system. In the present study, design berthing energy of bulk carriers having ...

2017
Harjinder kaur

The goal of image compression is to remove the redundancies for minimizing the number of bits required to represent an image while any type of compression like DWT,DCT,DFT, steganography works by embedding the secret data in redundancies of the image in invisibility manner. In this paper we increase image compression is done by hybrid (DCT+DWT) transform. MATLAB programs were written for DCT,DW...

2015
Esha Gupta Poorva Waingankar

In this paper, comparison of three Video compression techniques i.e. Discrete Cosine Transform (DCT), Discrete Wavelet Transform (DWT) and Hybrid is done. DCT is applied to Rows, Columns and Rows*Columns separately to frames in a video with compression factor of 2, 4 and 8, whereas Discrete Wavelet Transform(DWT) is applied till 2 level of DWT decomposition and Hybrid-1 combining DCT and DWT 1 ...

The current study focuses on two main goals. First, with the use of construction and demolition (C&D) of building materials, a new aggregate was produced and it was utilized for green concrete production. The compressive strength test confirmed the good function of C&DW aggregate concrete. This concrete did not show significant differences with natural sand concrete. Second, Backpropagation neu...

Journal: :journal of artificial intelligence in electrical engineering 2014
maryam hamrahi

due to high speed computer networks, the use of digitally formatted data has increased many folds.the digital data can be duplicated and edited with great ease which has led to a need for effectivecopyright protection tools. digital watermarking is a technology of embedding watermark withintellectual property rights into images, videos, audios and other multimedia data by a certainalgorithm .di...

2015
G. BUELA DIVYA M. KRUPA SWAROOPA RANI

This paper describes architecture of DCT and DWT standard of an image compression. It is used specially for the compression of images where tolerable degradation is required. The discrete cosine transform is a fast transform and has fixed basis images which gives good compromise between information packing ability and computational complexity. DWT can be used to reduce the image size without lo...

Journal: :Remote Sensing 2021

Hyperspectral image classification is an emerging and interesting research area that has attracted several researchers to contribute this field. images have multiple narrow bands for a single enable the development of algorithms extract diverse features. Three-dimensional discrete wavelet transform (3D-DWT) advantage extracting spatial spectral information simultaneously. Decomposing into set s...

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