A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
Filters
An analysis of a discrete cosine transform (DCT)compression technique on low level features of image for image retrieval system
2018
Journal of Fundamental and Applied Sciences
Preserved Fulltext
Those images later can be retrieved from the system by running a text which explained the characteristics of an image. ...
In order to Based Image Retrieval image compression; discrete cosine transformation (DCT); image processing; Research Article Special Issue M. A. M. Shukran et al. ...
J Fundam Appl Sci. 2017, 9(3S), 11-27 A Content-Based Image Retrieval (CBIR) model Feature extraction using the DCT coefficients produced an efficient searching results that matched with the query. ...
doi:10.4314/jfas.v9i3s.2
fatcat:pt27rge6lff7nnhjfb5f4tsn5q
Multimedia Content Filtering, Browsing, and Matching Using MPEG-7 Compact Color Descriptors
[chapter]
2000
Lecture Notes in Computer Science
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Without such descriptions, the average consumer would be left helpless with enormous amount of data and no viable tool to efficiently access the content. ...
Here we present two color descriptors that are very compact in size, namely, the compact color histogram descriptor and the compact color layout descriptor. ...
The former is used to express color content of an image for similarity-based retrievals. Color histograms are often used for this purpose. ...
doi:10.1007/3-540-40053-2_18
fatcat:lmdj7e3knbbt7djf2ax7swwhry
Reversible Data Hiding in Digital Image
2019
International Journal of Engineering and Advanced Technology
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
All kinds of multimedia information like audio, video and images can be obtained freely and copied even edited then transmitted as one wishes. ...
principle s of reversible data hiding (RDH) as a method of covert communication in order to understand how information is embedded in the graphical representation and covers the in-depth discussion on image ...
Shifts the quantized DCT coefficient histogram with an optimum searching strategy. This optimum strategy used to achieve good performance. ...
doi:10.35940/ijeat.f1387.0986s319
fatcat:hcmombllj5do3fvnhg67n7skqi
Retrieving digital images from a JPEG compressed image database
2004
Image and Vision Computing
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2004; you can also visit the original URL.
The file type is application/pdf.
In this paper, we propose a new method of feature extraction in order to improve the efficiency of retrieving Joint Photographic Experts Group (JPEG) compressed images. ...
Our image retrieval system will give each retrieved image a rank to define its similarity to the query image. ...
Therefore, it is important to develop an efficient image retrieval technique to retrieve wanted images from the compressed domain. ...
doi:10.1016/j.imavis.2003.11.008
fatcat:bfibnkqi55dbdhk5rih3m5crsy
OPPR: An Outsourcing Privacy-Preserving JPEG Image Retrieval Scheme with Local Histograms in Cloud Environment
2021
Journal on Big Data
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2022; you can also visit the original URL.
The file type is application/pdf.
However, it is not conducive to the efficient application of image, especially in the Content-Based Image Retrieval (CBIR) scheme. ...
The group index histograms of DCT coefficients are extracted from the encrypted big-blocks, then the global vector is produced to represent the JPEG image with the aid of bagof-words (BOW) model. ...
Contribution: We design an outsourcing secure JPEG image retrieval scheme in this paper. ...
doi:10.32604/jbd.2021.015892
fatcat:z3zyhzwylzd3tcfthehxtdobca
An Improved Histogram-Based Features in Low-Frequency DCT Domain for Face Recognition
2015
International Journal of Machine Learning and Computing
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
Previously, we proposed an efficient algorithm for facial image recognition combined with vector quantization (VQ) histogram and energy histogram in low-frequency DCT domains. ...
These two histograms, which contain both phase and magnitude information of a DCT transformed facial image, are utilized as a very effective personal feature. ...
Similar to a color histogram, an energy histogram of the DCT coefficients is created by counting the number of times an energy level appears in a DCT blocks set of a DCT compressed image. ...
doi:10.7763/ijmlc.2015.v5.542
fatcat:r7vbfwxwpzakvd6ektrpgefb7y
Web-WISE: compressed image retrieval over the web
[chapter]
1998
Lecture Notes in Computer Science
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2003; you can also visit the original URL.
The file type is application/pdf.
Web-WISE is a system designed to address the need for efficient content-based seeking and retrieval of images on the web. It supports searching by multi-features, including color and texture. ...
Due to its generic design, adding other features to the system will be very natural, including the ability to index and retrieve other types of visual information and retrieval based on edge and shape. ...
To get compact representation of image feature for efficient storage and retrieval, quantization of the histograms is required. ...
doi:10.1007/bfb0016487
fatcat:ffgccqd6krcopjcxosyftu6l6u
Quantization Table Estimation in JPEG Images
2010
International Journal of Advanced Computer Science and Applications
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2013; you can also visit the original URL.
The file type is application/pdf.
In this paper we present a straightforward method to estimate the quantization table from the peaks of the histogram of DCT coefficients. ...
Forgery detection tests on four different types of tampering resulted in an average false negative rate of 7.95% and 4.35% for the two measures respectively. ...
Nevertheless in reality, the DCT of an image block usually generates X * (i,j), which is not exactly X q (i,j), but an approximation of it. ...
doi:10.14569/ijacsa.2010.010603
fatcat:77nz2eul7rhuddr75xtawembsi
Image Indexing and Retrieval in Compressed Domain Using Color Clusters
2007
2007 IEEE Symposium on Computational Intelligence in Image and Signal Processing
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
The experimental results of the proposed model on a database of 7380 images are reported. Index Terms-Color indexing, compressed domain, content based retrieval, DCT. ...
Retrieval is performed by comparing the feature attributes of the clusters having significant membership in the query image, to those with the database images; the obtained matches are then integrated ...
To augment computational efficiency while performing retrieval, we quantize the color space into 343 colors, such that there are seven divisions along each axis. ...
doi:10.1109/ciisp.2007.369180
fatcat:vctscxgvdnfslflt4fnidfcrnu
Image Retrieval Based on the Combination of Region and Orientation Correlation Descriptors
2020
Journal of Sensors
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
The feature vector has only 80 dimensions for full color images specifically. Therefore, it is very efficient in image retrieving. ...
This paperwork proposes a lightweight and efficient image retrieval approach by combining region and orientation correlation descriptors (CROCD). ...
proposed an efficient framework for image retrieval using color, texture, and edge features. ...
doi:10.1155/2020/6068759
fatcat:no3vmm3w2rayjkukoh6fqhh7oq
A steganographic method based on DCT and new quantization technique
2012
2012 22nd International Conference on Computer Theory and Applications (ICCTA)
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
In this paper, an efficient data hiding technique based on the discrete cosine transform (DCT) of image is proposed. ...
In this technique, the DCT coefficient is quantized using a predefined mathematical operation then the secret bits are embedded in all frequency component of the quantized DCT coefficient using least significant-bit ...
In this paper, an efficient steganographic algorithm for data hiding is proposed .Digital images are used as the cover to embed the hidden data. ...
doi:10.1109/iccta.2012.6523567
fatcat:o5mvc62vwrdgnmsxflbm2yqhsa
Feature Extraction in JPEG domain along with SVM for Content Based Image Retrieval
2018
International Journal of Engineering & Technology
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
through SVM based feedback mechanism. ...
Content Based Image Retrieval (CBIR) applies computer vision methods for image retreival purposes from the databases. ...
Energy Information from DCT blocks The DC coefficient is an important feature in DCT domain and it represents the average energy of an image. ...
doi:10.14419/ijet.v7i2.19.11656
fatcat:fqosjnwyujat7fxkqekwns7nga
Image Retrieval Method Based on Image Feature Fusion and Discrete Cosine Transform
2021
Applied Sciences
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
This paper also tests variable factors that affect image retrieval performance, such as using principal component analysis (PCA) instead of DCT. ...
The shallow features are extracted from a Quantized Uniform Local Binary Pattern (ULBP), hue-saturation-value (HSV) histogram, and dual-tree complex wavelet transform (DTCWT). ...
The image retrieval performance can be enhanced through feature representation, feature quantization, or sorting method. ...
doi:10.3390/app11125701
fatcat:4mhuawy6hnarrf7z4v65trtceu
A comparative implementation of Content Based Image Retrieval techniques in Wavelet and Cosine domains
2014
IOSR Journal of Electronics and Communication Engineering
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
Content Based Image Retrieval generally uses the key feature of the image such as color, shape, texture to represent and index the image. ...
Recent research in Content Based Image Retrieval is geared towards the development of mythologies for analysing, interpreting, cataloguing and indexing image database. ...
Content Based Image Retrieval support all type of image and search based on the compare feature with an image input. ...
doi:10.9790/2834-09272530
fatcat:cc3wf55txjeprawkuj3ta3hfo4
Efficient CBIR Using Color Histogram Processing
2011
Signal & Image Processing An International Journal
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
The need for efficient content-based image retrieval system has increased hugely. ...
Efficient and effective retrieval techniques of images are desired because of the explosive growth of digital images. content based image retrieval (CBIR) is a promising approach because of its automatic ...
There is a need to develop an efficient method to retrieve digital images. Nowadays, CBIR is a hotspot of digital image processing techniques. ...
doi:10.5121/sipij.2011.2108
fatcat:sekset64sjgqvksupzd6hawnfa
« Previous
Showing results 1 — 15 out of 1,042 results