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Interblock Redundancy Reduction Using Quadtrees

X. Domingo, M. Faundez
1996 Zenodo  
Publication in the conference proceedings of EUSIPCO, Trieste, Italy, 1996  ...  We calculate the mean (X) and the 2 order moment of nd the block grey levels (X ). Then we code every block using a 1 2 bit/pel bit plane plus a low and a high grey levels (a and b).  ...  Let us make a fast review of how BTC works. We divide the image in blocks of a convenient size (in our case 4x4 pels).  ... 
doi:10.5281/zenodo.36221 fatcat:q365ca5jbjez5n33i2c74yqsiq

Color Image Compression by Using Absolute Moment Block Truncation Coding and Hadamard Transform

Aliaa Alrikabi
2016 INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY  
This paper investigates image data compression as it is applicable to different fields of image processing, in order to reduce the volume of pictorial data which one may need to store or transmit, The  ...  research modifies a method for image data compression based on the two component code, in this coding technique, the image is partitioned into regions of slowly varying intensity.  ...  This method called absolute moment block truncation coding (AMBTC). Both computational speed and reconstructed image quality are improved by preserving absolute moments instead of standard moments.  ... 
doi:10.24297/ijct.v15i7.1548 fatcat:aeq6kfxctzfe5fruvcad7ilcdu

An Enhanced Technique for Fractal Image Compression Using Block Based Features (BBF)

T. Velumani, A. R. Karthekeyan, R. Saveetha
2019 Asian Journal of Computer Science and Technology  
Image Compression is very active research area specializing on how to compression and decompression of images.  ...  In this paper, the proposed research work presented a block based feature compression of image in the generation of feature sets.  ...  Moreover, the computational cost of the algorithm is very low also used for image compression. Fig. 1 1 Process Flow of Encoding & Decoding Block 1.  ... 
doi:10.51983/ajcst-2019.8.2.2134 fatcat:ervbkllpyvblrkowfdhfdfdrlq

COLOR IMAGE COMPRESSION BASED ON ABSOLUTE MOMENT BLOCK TRUNCATION CODING USING DELTA ENCODING AND HUFFMAN CODING

N.A.A. Mosa
2014 مجلة بحوث التربية النوعية  
AMBTC method produce a fixed length binary representation of each block according to the block size of the image.  ...  In contrast huffman coding produce a variable length binary representation based on the statistical nature of the image.  ...  A simple and fast variation of BTC, called absolute moment BTC (AMBTC) was presented by Lema and Mitchell.It preserves the higher and lower mean of a block [12] .  ... 
doi:10.21608/mbse.2014.143233 fatcat:32yslbx6lnbmhkagk6cdhcshlq

Surfel Octrees: A New Scheme for Interactive Inspection of Anatomy Atlases in Client-Server Applications [article]

Jordi Surinyac, Pere Brunet
2015 Spanish Computer Graphics Conference  
Nowadays, an increasing interest on tele-medicine and tele-diagnostic solutions can be observed, with client/server architectures for remote inspection of volume image-based medical data which are becoming  ...  The use of portable devices is gradually spreading due to their portability and easy maintenance.  ...  Acknowledgements This work has been partially supported by the Project TIN2014-52211-C2-1-R of the Spanish Ministerio de Economía y Competitividad.  ... 
doi:10.2312/ceig.20151201 dblp:conf/ceig/SurinyacB15 fatcat:ujqtexnrerd37nf26tqv5365ga

A review of the fractal image compression literature

Dietmar Saupe, Raouf Hamzaoui
1994 Computer graphics  
For example, one can use three blocks giving all bivariate polynomials of degree one, or six blocks producing all such polynomials of degree two.  ...  Using the mathematical framework described by Lundheim [Lund92] in which blocks of a discrete grey-tone image are seen as points of a finite dimensional inner product space, Leps.oy and Oien [Leps93,  ... 
doi:10.1145/193234.193246 fatcat:kx6bgvvphjbr3ixyxl2w43jvhi

Image Retrieval Using Fused Features

K. Sakthivel, R. Nallusamy, C. Kavitha
2014 Zenodo  
From the HSV image, Color features are extracted using block color histogram, texture features using Haar transform and shape feature using Fuzzy C-means Algorithm.  ...  Finally, the best method of each feature is fused during similarity measure to improve image retrieval effectiveness and accuracy.  ...  The grey-scale image should be compressed to reduce calculations is formed. 16 types of compression levels were chosen to improve the texture feature extracting speed. Step 3.  ... 
doi:10.5281/zenodo.1096502 fatcat:iys64sqgw5fidj2ybdqj3rq7qe

A Survey of Partition-Based Techniques for Copy-Move Forgery Detection

Wandji Nanda Nathalie Diane, Sun Xingming, Fah Kue Moise
2014 The Scientific World Journal  
A copy-move forged image results from a specific type of image tampering procedure carried out by copying a part of an image and pasting it on one or more parts of the same image generally to maliciously  ...  Therefore, detecting such forgeries mainly consists in devising ways of exposing identical or relatively similar areas in images.  ...  In [9] , the fast curvelet transform (FCT) of each block is computed and features are extracted as follows: for each subband of the fast curvelet transformed block, the mean values are calculated for  ... 
doi:10.1155/2014/975456 pmid:25152931 pmcid:PMC4132339 fatcat:frjacuj5jfantnw2i7lg3iuh34

A Review: Block-Based Copy-Move Forgery Detection Methods

Malti Puri, Vinay Chopra
2016 International Journal of Engineering Research and  
In this paper we survey various block-based methods used for detecting copy-move forgery.  ...  Image authenticity is a major concern, because images are used in various fields to give illustrate important information.  ...  The method is based on blur moment invariants. Image is firstly divided into overlapping blocks and blocks are represented using blur invariants.  ... 
doi:10.17577/ijertv5is100083 fatcat:3ln7rk5ojng3zb6qackb4wbiri

Compressed Domain Computationally Efficient Processing Scheme for JPEG Image Filtering

Camelia Florea, Mihaela Gordan, Bogdan Orza, Aurel Vlaicu
2013 Advanced Engineering Forum  
Image filtering is one of the principal tools used in computer vision applications.  ...  We propose that the convolution operation to be applied just on the periodical extensions of the DCT basis images, as an off-line processing, obtaining the filtered DCT basis images, which are used in  ...  Let us consider X[H × W ] to be a digital image. For the sake of simplicity, we assume X is a grey scale image.  ... 
doi:10.4028/www.scientific.net/aef.8-9.480 fatcat:an2e4upvr5bondiq26nwv3ai7a

On the Mathematical Reconstruction of Two Dimensional Plants

Zbigniew J. Grzywna, Przemysław Borys, Gabriela Dudek
2006 Bioscience Reports  
of the plant from the compressed image.  ...  representation of each of the plants, and thirdly: the impressive compression achieved, leading to remarkable computer memory saving, and still permitting successful pattern recognition i.e., proper identification  ...  A certain compression can be seen in the PIFS-SFA coding method: if we are able to encode the image in a small number of codes (by using sufficient correlation coefficient), we can obtain a representation  ... 
doi:10.1007/s10540-006-9011-2 pmid:16763763 fatcat:dumth2lqbjaipodzsritu3udr4

Fractal Image Compression Using Block Indexing Technique: A Review

Zainab J. Ahmed, Loay E. George, Zinah S. Abduljabbar
2020 Iraqi Journal of Science  
A summarized review of contributions is achieved to determine the fulfillment of fractal image compression, specifically for the block indexing methods based on the moment descriptor.  ...  Fractal image compression depends on representing an image using affine transformations.  ...  The performance of all possible combinations between double moment descriptors was investigated and a fast computation mechanism was introduced to calculate the moments attended to enhance the overall  ... 
doi:10.24996/ijs.2020.61.7.29 fatcat:blqlxcql2fa2hdslcemxjaqsrm

Content‐based image retrieval using Gaussian–Hermite moments and firefly and grey wolf optimization

Yasasvy Tadepalli, Meenakshi Kollati, Swaraja Kuraparthi, Padmavathi Kora, Anil Kumar Budati, Lakshmi Kala Pampana
2021 CAAI Transactions on Intelligence Technology  
The proposed content‐based image retrieval (CBIR) uses Gaussian–Hermite moments as the low‐level features. Later these features are compressed with principal component analysis.  ...  Hybrid firefly and grey wolf optimization (FAGWO) is used to prevent the premature convergence of optimization in the firefly algorithm.  ...  Discrete cosine transform, wavelet coding, and embedded block coding along with optimal truncation and scaling were used for image compression in medical images [33] .  ... 
doi:10.1049/cit2.12040 doaj:20b5a29a4e424a1998a2857938ca795c fatcat:ue5pgr6v6fa45igumwbzrtuxlm

Fractal Image Compression via Nearest Neighbor Search [chapter]

Dietmar Saupe
1998 Fractal Image Encoding and Analysis  
In fractal image compression the encoding step is computationally expensive.  ...  This result is useful for accelerating the encoding procedure in fractal image compression.  ...  The author thanks Klaus Bayer, Kai Uwe Barthel, Amitava Datta, Raouf Hamzaoui, Thomas Ottmann, and Sven Schuierer for fruitful discussions, Sunil Arya and Dave Mount for the fast nearest neighbor search  ... 
doi:10.1007/978-3-662-03512-2_6 fatcat:t6to6p2fgvewris4b2tbqx7c5y

A Paper On A Comparative Study Block Truncating Coding, Wavelet, Fractal Image Compression & Embedded Zero Tree

Mr. Naveen Dhillion Er. Neha Saini
2016 Zenodo  
For this different compression algorithm are used to compress images. Fractal image compression has been widely used to compress the image.  ...  We undertake a study of the performance difference of different transform coding techniques i.e. Block Truncating Coding, Wavelet, Fractal and Embedded Zero Tree image compression.  ...  It is one bit adaptive moment-reserving quantizer that preserves certain statistical moments of small blocks of the input image in the quantized output.  ... 
doi:10.5281/zenodo.57987 fatcat:bspyyfyryzhnjky3qbnipwc2em
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