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Efficient and Robust Retrieval by Shape Content through Curvature Scale Space
[chapter]
1998
Series on Software Engineering and Knowledge Engineering
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Since shape similarity is a subjective issue, in order to evaluate the method, we asked a number of volunteers to perform similarity retrieval based on shape on a randomly selected small database. ...
While a complex boundary is represented by about ve pairs of integer values, an e ective indexing method based on the aspect ratio of the CSS image, eccentricity and circularity is used to narrow down ...
Most proposed content based database systems aim to retrieve a small set of candidate images which include the desired image. ...
doi:10.1142/9789812797988_0005
dblp:series/sseke/MokhtarianAK98
fatcat:ed6625c3zveszojh2vdhwg3b7i
Robust and Efficient Shape Indexing through Curvature Scale Space
1996
Procedings of the British Machine Vision Conference 1996
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A fast indexing method then can be used to retrieve similar images based on their associated vectors. ...
Since shape similarity is a subjective issue, in order to evaluate the method, we asked a number of volunteers to perform similarity retrieval based on shape on a randomly selected small database. ...
The authors in 7] have used a combination of heuristic shape features such as area, circularity, eccentricity, major axis orientation and a set of algebraic moment invariants. ...
doi:10.5244/c.10.33
dblp:conf/bmvc/MokhtarianAK96
fatcat:ebdy5o375ng43pglgbpluhyofm
Query Adaptive Instance Search using Object Sketches
2016
Proceedings of the 2016 ACM on Multimedia Conference - MM '16
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features for sketch-based search. ...
Our query adaptive sketch based object search on benchmark datasets exhibits superior performance when compared with existing methods, which validates the advantages of utilizing both the shape and appearance ...
Such a localization problem is not fully explored in the previous works of sketch based image retrieval. ...
doi:10.1145/2964284.2964317
dblp:conf/mm/BhattacharjeeYH16
fatcat:jo5roabv4zgudp3icfvszne34q
Techniques and systems for image and video retrieval
1999
IEEE Transactions on Knowledge and Data Engineering
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In this survey we review techniques and systems for image and video retrieval. We rst look at visual and non-visual features for image retrieval and techniques for using them. ...
Temporal aspects of video retrieval are discussed next. We review several research and commercial systems including WWW-based systems and conclude with future directions. ...
A search on a speci c color at a speci c location can be performed in two steps: In the rst step, two searches are performed based on color and on location. ...
doi:10.1109/69.755615
fatcat:4eu2h2ngt5c3zalhw3i47ehntu
Generic naming in generative, constraint-based design
1996
Computer-Aided Design
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In generative, constraint-based design, users graphically select shape elements of design instances in order to specify shape operations that have generic intent. ...
We discuss techniques for naming algorithmically and generically the identi ed geometric instance, and report on our experience with implementing these techniques. ...
We assume that the solution of a 2D sketch, based on speci ed geometric constraints, is the one the user intended. ...
doi:10.1016/0010-4485(95)00014-3
fatcat:eagn3i6qgbgw5mfunhh7rhraey
Content-based retrieval of biomedical images using orthogonal Fourier-Mellin moments
2018
Computer Methods in Biomechanics and Biomedical Engineering Imaging & Visualization
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Proposed Framework for OFMMs-Based CT and MR Image Retrieval System
Orthogonal Rotation Invariant Moments (ORIMs) Orthogonal rotation invariant moments (ORIMs) are a class of geometric invariants obtained ...
In addition, OFMMs have the characteristics to be invariant towards geometric transformations such as rotation, scaling and translation (RST). ...
doi:10.1080/21681163.2018.1493619
fatcat:slfk6mv2grd3pg6tadf6hvjx54
Indexing shapes in image databases using the centroid–radii model
2000
Data & Knowledge Engineering
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In content-based image retrieval systems, the content of an image such as color, shapes and textures are used to retrieve images that are similar to a query image. ...
Most of the existing work focus on the retrieval eectiveness of using content for retrieval, i.e., study the accuracy (in terms of recall and precision) of using dierent representations of content. ...
that the user has painted on some sketching tool. ...
doi:10.1016/s0169-023x(99)00039-7
fatcat:hqsghqvg6jgmjiafzw6ougefxa
The generalization of the R-transform for invariant pattern representation
2012
Pattern Recognition
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This paper revisits the problem of Radon image utilization with a generic view on a popular Radon transform-based transform and pattern descriptor, the R-transform and R-signature, bringing in a class ...
The stability of dominant direction encoding by the generic R-transform and the superiority of the generic R-signature over existing invariant pattern descriptors on grayscale and binary noisy datasets ...
Most of the existing methods do not allow invariance to all RST, they usually require normalizations for the unavailability of any of RST. ...
doi:10.1016/j.patcog.2011.11.007
fatcat:gzv3kzsm5zbbtljppjfo3qt7by
Supporting ranked Boolean similarity queries in MARS
1998
IEEE Transactions on Knowledge and Data Engineering
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In this paper, we concentrate on the retrieval subsystem of MARS and its support for content-based queries over image databases. ...
Speci cally, w e discuss the ranking and retrieval algorithms developed in MARS based on the Boolean retrieval model and describe the results of our experiments that demonstrate the e ectiveness of the ...
Its shape feature consists of shape area, circularity, eccentricity, major axis orientation and a set of algebraic moments invariants. ...
doi:10.1109/69.738357
fatcat:6qc5sfclozcjjb7tmr747qd52y
Exemplary documents: a foundation for information retrieval design
2002
Information Processing & Management
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This paper suggests an alternative document representation method based on what we call exemplary documents. ...
Of particular importance is the creation of indexing schemes for retrieval systems in nonlibrary contexts. ...
Maron (University of California, Berkeley) for their comments on an earlier version of this paper. ...
doi:10.1016/s0306-4573(01)00027-9
fatcat:4zinajclrneudabeuxzjfyayji
Integrating symbolic images into a multimedia database system using classification and abstraction approaches
1998
The VLDB journal
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Two approaches for supporting queries on symbolic-image databases that are based on image content are studied. ...
Methods of integrating these two approaches into a relational multimedia database management system so that symbolic images can be stored and retrieved based on their content are described. ...
The feature vector is composed of four global descriptors rst invariant moment, circularity, eccentricity, and rectangularity and three local shape descriptors horizontal gaps per total area, vertical ...
doi:10.1007/s007780050068
fatcat:esqjuoqyxzbexppvsjhn5a7po4
MARCO: MAp retrieval by COntent
1996
IEEE Transactions on Pattern Analysis and Machine Intelligence
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Indices are constructed on both the contextual and the spatial data thereby enabling e cient retrieval of layer and composite images based on contextual as well as spatial speci cations. ...
A system named MARCO denoting MAp Retrieval by COntent that is used for the acquisition, storage, indexing, and retrieval of map images is presented. ...
These features include some global e.g., rst invariant moment, circularity, eccentricity, rectangularity and some local shape descriptors e.g., intersections, gaps 13 that we empirically identi ed as useful ...
doi:10.1109/34.531799
fatcat:umwgwlibefhntlwcl7hmwffp6u
Supporting similarity queries in MARS
1997
Proceedings of the fifth ACM international conference on Multimedia - MULTIMEDIA '97
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In this paper, we concentrate on the retrieval subsystem of MARS and its support for content-based queries over image databases. ...
Speci cally, w e discuss the ranking and retrieval algorithms developed in MARS based on the Boolean retrieval model and describe the results of our experiments that demonstrate the e ectiveness of the ...
Its shape feature consists of shape area, circularity, eccentricity, major axis orientation and a set of algebraic moments invariants. ...
doi:10.1145/266180.266394
dblp:conf/mm/OrtegaRCMH97
fatcat:hr4uplnaurb6bkfxz4i6itp2jm
Concept Formation in Structured Domains
[chapter]
1991
Concept Formation
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All of the above and Sally Mouzon provided useful comments on an earlier draft. ...
The system initializes its hierarchy to a single node based on the rst instance. It then enters a loop of accepting new instances, classifying them and updating memory along the classi cation path. ...
For each seed, Cluster/2 uses the star-generating algorithm described by Michalski (1983) to nd the set of alternative most general descriptions that distinguish the cluster based on that seed from those ...
doi:10.1016/b978-1-4832-0773-5.50011-0
fatcat:sudkj4g4bzgundzlluaj5gb624
Robust Image Watermarking Theories and Techniques: A Review
2014
Journal of Applied Research and Technology
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This paper reviews the theoretical analysis and performance investigation of representative watermarking systems in transform domains and geometric invariant regions. ...
Most of the proposed geometrical transform invariant algorithms are actually only RST invariant. ...
The watermark correspondence detection is achieved by the circular convolution. The invariant watermark of rotation is obtained by the translation characteristic of the polar-mapped circular pads. ...
doi:10.1016/s1665-6423(14)71612-8
fatcat:auyjvhohajg2tmlphnouehkd2q
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