Hybrid WPT‐BDCT transform for high‐quality image compression

Thakur, Vikrant Singh; Gupta, Shubhrata; Thakur, Kavita

doi:10.1049/iet-ipr.2016.0740

Cited by 15 publications

(10 citation statements)

References 27 publications

(31 reference statements)

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“…Besides the winding approach, there are other classification criteria that explain the majority of the winding methods available. The nature of winding is additionally affected by the number of spatially turning axes used to wrap the fiber around the mandrel [ 11 , 12 , 13 ]. All of these criteria allow for procedural differentiation and the allocation of typical topological appearances to the different composite components produced.…”

Section: Introductionmentioning

confidence: 99%

Axial and Radial Compression Behavior of Composite Rocket Launcher Developed by Robotized Filament Winding: Simulation and Experimental Validation

et al. 2021

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The principal objective of the work is to compare among carbon-glass filament wound epoxy matrix hybrid composites with a different fiber ratio made by robotized winding processes and optimize the geometry suitable for the Rocket Propelled Grenade Launcher. ANSYS based finite element analysis was used to predict the axial as well as radial compression behavior. Experimental samples were developed by a robot-controlled filament winding process that was incorporated with continuous resin impregnation. The experimental samples were evaluated for the corresponding compressional properties. Filament wound tubular composite structures were developed by changing the sequence of stacking of hoop layers and helical layers, and also by changing the angle of wind of the helical layers while keeping the sequence constant. The samples were developed from carbon and glass filaments with different carbon proportions (0%, 25%, 50%, 75%, and 100%) and impregnated with epoxy resin. The compressional properties of the tubular composites that were prepared by filament winding were compared with the predicted axial and radial compressional properties from computational modelling using the finite element model. A very high correlation and relatively small prediction error was obtained.

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Section: Introductionmentioning

confidence: 99%

Axial and Radial Compression Behavior of Composite Rocket Launcher Developed by Robotized Filament Winding: Simulation and Experimental Validation

et al. 2021

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“…The DCT and DWT compression technique are applied for each format and the results show that the size of the compressed image is able to reduce by about 96.92% and 99.8% from its original image, thus a good quality of image have been developed. Moreover, the results obtained show better PSNR value compared to [25], [26] and DCT in [27] while for [28] and [29] shows good PSNR value and compression ratio by applying hybrid method. Therefore, a hybrid compression method is proposed to realize higher compression of the input image and reduce larger space of image's data storage.…”

Section: Resultsmentioning

confidence: 99%

A Comparative Study on Improvement of Image Compression Method using Hybrid DCT-DWT Techniques with Huffman Encoding for Wireless Sensor Network Application

Hussin¹,

Po'ad²,

Joret³

2019

IJIE

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Nowadays, the demands on the usage of wireless network are increasing rapidly from year to year. Wireless network is a large scale of area where many nodes are connecting to each other to commun icate using a device. Primarily, wireless network also tend to be as a link to transmit and receive any multimedia such as image, sound, video, document and etc. In order to receive the transmitted media correctly, most type of media must be compressed before being transmitted and decompressed after being received by the device or else the device used must have the ability to read the media in a compressed way. In this paper, a hybrid compression of Discrete Cosine Transform (DCT) and Discrete Wavelet Transform (DWT) with Huffman encoding technique are proposed for Wireless Sensor Network (WSN) application. Data compression is very useful to remove the redundant data and reduce the size of image. After conducting a comprehensive observation, it is found that hybrid compression is suitable due to the process consist of the combination of multiple compression techniques which suits for Wireless Sensor Network's application focusing on ZigBee platform.

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“…Furthermore, since the JPEG coder is one of the popular DCT‐ITCs [2], hence the obtained quantisation tablesgiven in (17) and (18) are compared against thedefault quantisation table of JPEG standard (JPEG‐DQT) [2], given as

JPEG - DQT = (][, \begin{matrix} 1em4pt \\ 16 & 11 & 10 & 16 & 24 & 40 & 51 & 61 \\ 12 & 12 & 14 & 19 & 26 & 58 & 60 & 55 \\ 14 & 13 & 16 & 24 & 40 & 57 & 69 & 56 \\ 14 & 17 & 22 & 29 & 51 & 87 & 80 & 62 \\ 18 & 22 & 37 & 56 & 68 & 109 & 103 & 77 \\ 24 & 35 & 55 & 64 & 81 & 104 & 113 & 92 \\ 49 & 64 & 78 & 87 & 103 & 121 & 120 & 101 \\ 72 & 92 & 95 & 98 & 112 & 100 & 103 & 99 \end{matrix}) .

However, to compress the test NOB of Lena image at 0.3 bpp, wehave to scale the JPEG‐DQT shown in (19). Hence, the JPEG‐DQT has been scaled by a factor of 6.5 as shownin (20), to get the desiredcompression of the test NOB.…”

Section: Proposed Iioniba Technique For the Dct‐itcsmentioning

confidence: 99%

“…Transform coding is an important technique for visual data compression applications [1, 2]. Particularly, the discrete cosine transform (DCT)‐based coders, like JPEG [3–6], MPEG‐2 [7], H.263 [8], H.264 [9], and H.265 [10] are much popular than the others due to their low complexity and low‐cost implementation.…”

Section: Introductionmentioning

confidence: 99%

Image‐independent optimal non‐negative integer bit allocation technique for the DCT‐based image transform coders

Thakur¹,

Thakur

Gupta³

et al. 2020

IET Image Processing

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Hybrid WPT‐BDCT transform for high‐quality image compression

Cited by 15 publications

References 27 publications

Axial and Radial Compression Behavior of Composite Rocket Launcher Developed by Robotized Filament Winding: Simulation and Experimental Validation

Axial and Radial Compression Behavior of Composite Rocket Launcher Developed by Robotized Filament Winding: Simulation and Experimental Validation

A Comparative Study on Improvement of Image Compression Method using Hybrid DCT-DWT Techniques with Huffman Encoding for Wireless Sensor Network Application

Image‐independent optimal non‐negative integer bit allocation technique for the DCT‐based image transform coders

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