
Scale Invariant 3D Multi-Person Tracking using a Base Set of Bundle Adjusted Visual Landmarks Scale Invariant 3D Multi-Person Tracking using a Base Set of Bundle Adjusted Visual Landmarks Authors: Alberto Del Bimbo, Giuseppe Lisanti, Federico Pernici More info: www.micc.unifi.it In the proceedings of the ninth Visual Surveillance 2009:

Linear Time Invariant systems - Part 2 This video presents the properties of LTI systems. Useful lecture series from alumnus of IISc/IITs for GATE, IES, PSUs aspirants. For more details visit

Invariant Manifold of the Lorenz System showing Lorenz attractor Alexander Vladimirsky (Department of Mathematics, Cornell University, Ithaca, NY) joint project with John Guckenheimer. Invariant Manifold Movies: "Lorenz System" Example. www.math.cornell.edu The movie illustrates the stable manifold of the origin in the Lorenz system for the canonical parameter values. The color indicates the distance-to-origin-along-trajectory (sigma). The stable manifold rotating about the z-axis, first for Sigma=120, and then for Sigma=150. Inserted are ``Growing'' the manifold movies: Two different views (rotated) of the stable manifold of the origin. The manifold is displayed semi-transparently, except for the ``outer rim'' (opaque) representing the most recently added simplexes. The attractor is shown in black.

Algebraic geometric invariants of fg groups part 1 of 4 In this talk given at the New York Algebra Colloquium, Sal Liriano discusses his work on Algebro Geometric invariants of fg groups. More precisely, he discusses Hom(G,A), where A is an affine algebraic group. This space inherits the structure of an affine algebraic variety that he denotes by R_A(G) and calls the "space of representations of G over the affine group A". He presents several results and conducts a few calculations. He also discusses his recent applications of this invariant to the class of finitely generated parafree groups, a class of groups constructed by Gilbert Baumslag in the 60's. More precisely, if F_n, the free group of rank n, and A a connected affine group where F_n embeds then R_A(F_n) is irreducible. Liriano shows that when A=SL(2,C), there are non-free parafree groups G of rank 2, where R_A(G) can have as many irreducible components as you desire. In fact, you can find an infinite number of non-free parafree groups of rank 2 with dimension larger than any arbitrary positive integer given. This is quite surprising given the strong resemblance of non free parafree groups to free groups. He then discusses joint work with Majewicz using other invariants of R_A(G), where G is a torus knot group and an orientable surface group. In particular he discusses a result where Majewicz and Liriano show that the algebro-geometric properties of the space of representation over PSL(2,C) for a torus knot are quite different from those over SL(2,C). Also discussed ...

Loop invariants The correctness of iterative algorithms can be formally proven using loop invariants.

Scale-invariant heat kernel signatures for non-rigid shape recognition MM Bronstein, I. Kokkinos, Scale-invariant heat kernel signatures for non-rigid shape recognition, CVPR 2010. One of the biggest challenges in non-rigid shape retrieval and comparison is the design of a shape descriptor that would maintain invariance under a wide class of transformations the shape can undergo. Recently, heat kernel signature was introduced as an intrinsic local shape descriptor based on diffusion scale-space ***ysis. In this paper, we develop a scale-invariant version of the heat kernel descriptor. Our construction is based on a logarithmically sampled scale-space in which shape scaling corresponds, up to a multiplicative constant, to a translation. This translation is undone using the magnitude of the Fourier transform. The proposed scale-invariant local descriptors can be used in the bag-of-features framework for shape retrieval in the presence of transformations such as isometric deformations, missing data, topological noise, and global and local scaling. We get significant performance improvement over state-of-the-art algorithms on recently established non-rigid shape retrieval benchmarks.

Elementary Divisors, Invariant factors of Groups Nice easy video. Hope it helps someone

Time Invariance: Conceptual Introduction An introduction to the difference between time varying and time invariant systems. This video is one in a series of videos being created to support EGR 433:Transforms & Systems Modeling at Arizona State University. Links to the other videos can be found at

HU's invariant moments This is an implementation of Hu's moment of invariants. As the name suggests these moments are to aid a user to detect object in a robust fashion. That is , it is invariant to rotation and scale. Please note this implementation is no test for noise

Pose Invariant Face Detection

Fast Scale-Invariant Object Recognition Combining Harris Interest Points and the SIFT Descriptor for Fast Scale-Invariant Object Recognition.

Linear Time Invariant systems - Part 3 This video presents the properties of LTI systems. Useful lecture series from alumnus of IISc/IITs for GATE, IES, PSUs aspirants. For more details visit

Algelbraic geometric invariants of fg groups part 2 of 4 In this talk given at the New York Algebra Colloquium, Sal Liriano discusses his work on Algebro Geometric invariants of fg groups. More precisely, he discusses Hom(G,A), where A is an affine algebraic group. This space inherits the structure of an affine algebraic variety that he denotes by R_A(G) and calls the "space of representations of G over the affine group A". He presents several results and conducts a few calculations. He also discusses his recent applications of this invariant to the class of finitely generated parafree groups, a class of groups constructed by Gilbert Baumslag in the 60's. More precisely, if F_n, the free group of rank n, and A a connected affine group where F_n embeds then R_A(F_n) is irreducible. Liriano shows that when A=SL(2,C), there are non-free parafree groups G of rank 2, where R_A(G) can have as many irreducible components as you desire. In fact, you can find an infinite number of non-free parafree groups of rank 2 with dimension larger than any arbitrary positive integer given. This is quite surprising given the strong resemblance of non free parafree groups to free groups. He then discusses joint work with Majewicz using other invariants of R_A(G), where G is a torus knot group and an orientable surface group. In particular he discusses a result where Majewicz and Liriano show that the algebro-geometric properties of the space of representation over PSL(2,C) for a torus knot are quite different from those over SL(2,C). Also discussed ...

Quantum Algorithms and Invariant Subgroups part 3 of 6 New York Algebra Colloquium March 25, 2011. Dr. Marianna Bonanome (City Tech, CUNY) Title: Quantum Algorithms for Fixed Points and Invariant Subgroups Abstract of Marianna's talk: In this talk I will present quantum algorithms to solve several problems concerning fixed points and invariant subgroups of automorphisms. These efficient algorithms invoke a quantum algorithm which computes the intersection of multiple unsorted lists whose elements originate from the same set. This intersection algorithm is a modification of the Grover search procedure. For more information regarding the colloquium, please visit:

Invariants A tutorial on invariants. For more help please go to

The Invariant Set To read along follow this link:

Lec-21 The Time-Invariant Kalman Filter Lecture Series on Estimation of Signals and Systems by Prof.S. Mukhopadhyay, Department of Electrical Engineering, IIT Kharagpur. For more details on NPTEL visit nptel.iitm.ac.in

Linear Time Invariant systems - Part 4 This video presents the properties of LTI systems. Useful lecture series from alumnus of IISc/IITs for GATE, IES, PSUs aspirants. For more details visit

[cpsc 645 project] Linear Rotation-invariant Coordinates for Meshes

Object Matching Using A Locally Affine Invariant and Linear Programming Techniques - Video 3 Results

invariance in variance 'If reality is associated with invariance then the reality of the objects of experience lies in the invariant codes in terms of which they are known. Likewise, the reality of mind lies in the invariant structure of its manifold operations' - László Ervin 'A thing is right when it tends to preserve the integrity, stability and beauty of the biotic community. It is wrong when it tends otherwise' - Aldo Leopold an audiovisual poem open to interpretations assertions attendant structures of reference

Lect. 9: System Properties (Time varying/invariant - Causality) How to determine whether a system is time-varying/invariant and causal/noncausal)?

Illumination Invariant Target Tracking 2 An object is tracked under changing illumination conditions. To cope with the variable scene illumination, the target tracking algorithm aims to separate the influence of the (variable) lighting conditions and the (fixed) influence of the surface reflection characteristics on the color. Tracking is then performed based on the surface reflection characteristics and NOT on the basis of the object color. The illumination conditions ares are estimated / learned over time, which is why the detection results are less good whenever a sudden illumination change occurs and then become better over time.

Linear Time Invariant systems - Part 5 This video presents the properties of LTI systems. Useful lecture series from alumnus of IISc/IITs for GATE, IES, PSUs aspirants. For more details visit

Linear Time Invariant systems - Part 6 This video presents the properties of LTI systems. Useful lecture series from alumnus of IISc/IITs for GATE, IES, PSUs aspirants. For more details visit

Learning Invariant Features Using Inertial Priors We address the technical challenges involved in combining key features from several theories of the visual cortex in a single computational model. The resulting model is a hierarchical Bayesian network factored into modular component networks implementing variable-order Markov models. Each component network has an associated receptive field corresponding to components in the level directly below it in the hierarchy. The variable-order Markov models account for features that are invariant to naturally occurring transformations in their inputs. These invariant features support efficient generalization and produce increasingly stable, persistent representations as we ascend the hierarchy. The receptive...

Quantum Algorithms and Invariant Subgroups part 1 of 6 New York Algebra Colloquium March 25, 2011. Dr. Marianna Bonanome (City Tech, CUNY) Title: Quantum Algorithms for Fixed Points and Invariant Subgroups Abstract of Marianna's talk: In this talk I will present quantum algorithms to solve several problems concerning fixed points and invariant subgroups of automorphisms. These efficient algorithms invoke a quantum algorithm which computes the intersection of multiple unsorted lists whose elements originate from the same set. This intersection algorithm is a modification of the Grover search procedure. For more information regarding the colloquium, please visit:

Time Invariance: Mathematics How to mathematically determine whether a system is time varying or time invariant. This video is one in a series of videos being created to support EGR 433:Transforms & Systems Modeling at Arizona State University. Links to the other videos can be found at

Linear Time Invariant systems - Part 1 This video presents the properties of LTI systems. Useful lecture series from alumnus of IISc/IITs for GATE, IES, PSUs aspirants. For more details visit

Algebraic geometric invariants of fg groups part 3 of 4 In this talk given at the New York Algebra Colloquium, Sal Liriano discusses his work on Algebro Geometric invariants of fg groups. More precisely, he discusses Hom(G,A), where A is an affine algebraic group. This space inherits the structure of an affine algebraic variety that he denotes by R_A(G) and calls the "space of representations of G over the affine group A". He presents several results and conducts a few calculations. He also discusses his recent applications of this invariant to the class of finitely generated parafree groups, a class of groups constructed by Gilbert Baumslag in the 60's. More precisely, if F_n, the free group of rank n, and A a connected affine group where F_n embeds then R_A(F_n) is irreducible. Liriano shows that when A=SL(2,C), there are non-free parafree groups G of rank 2, where R_A(G) can have as many irreducible components as you desire. In fact, you can find an infinite number of non-free parafree groups of rank 2 with dimension larger than any arbitrary positive integer given. This is quite surprising given the strong resemblance of non free parafree groups to free groups. He then discusses joint work with Majewicz using other invariants of R_A(G), where G is a torus knot group and an orientable surface group. In particular he discusses a result where Majewicz and Liriano show that the algebro-geometric properties of the space of representation over PSL(2,C) for a torus knot are quite different from those over SL(2,C). Also discussed ...

Checking Time Invariance of a Simulink Model An example of determining whether a Simulink system model is time invariant using simulation. This video is one in a series of videos being created to support EGR 433:Transforms & Systems Modeling at Arizona State University. Links to the other videos can be found at

Quantum Algorithms and Invariant Subgroups part 2 of 6 New York Algebra Colloquium March 25, 2011. Dr. Marianna Bonanome (City Tech, CUNY) Title: Quantum Algorithms for Fixed Points and Invariant Subgroups Abstract of Marianna's talk: In this talk I will present quantum algorithms to solve several problems concerning fixed points and invariant subgroups of automorphisms. These efficient algorithms invoke a quantum algorithm which computes the intersection of multiple unsorted lists whose elements originate from the same set. This intersection algorithm is a modification of the Grover search procedure. For more information regarding the colloquium, please visit:

AATUCAGG: Lesson 34 - Invariant and Relativistic Mass Invariant and Relativistic Mass are related to the curvature of space by the Aatucagg Factor

Machine Vision Technology Ltd - Rotational invariant OCR Optical character recognition on the top of food cans. This is to check that the code is correct compared to the barcode which is read at the labeling machine.

Bending-invariant correspondence matching on 3D human bodies for feature point extraction Samuel S.-M. Li, Charlie CL Wang, and Kin-Chuen Hui, "Bending-invariant correspondence matching on 3D human bodies for feature point extraction", IEEE Transactions on Automation Science and Engineering, accepted.

Object Matching Using A Locally Affine Invariant and Linear Programming Techniques - Video 4 Results

Color Invariant Chroma Keying and Color Spill Neutralization for Dynamic Scenes and Cameras

Linearity and Time Invariance Example: RC Circuit Part 1 An example of determining whether an RC circuit is linear and time invariant. This provides some conceptual ideas about the role of initial conditions in systems whose dynamics are described by differential equations. This video is one in a series of videos being created to support EGR 433:Transforms & Systems Modeling at Arizona State University. Links to the other videos can be found at

Illumination Invariant Target Tracking 1 An object is tracked under changing illumination conditions. To cope with the variable scene illumination, the target tracking algorithm aims to separate the influence of the (variable) lighting conditions and the (fixed) influence of the surface reflection characteristics on the color. Tracking is then performed based on the surface reflection characteristics and NOT on the basis of the object color. The illumination conditions ares are estimated / learned over time, which is why the detection results are less good whenever a sudden illumination change occurs and then become better over time.

Invariant measure of logistic map An animation of Invariant measure of logistic map.

Gendai Haiku (invariant image) Exhibited in "The thought of Yoon, Shingo, Hisaya" (Seoul, April 21st-May 10th 2010). Gendai Haiku consists of two movies, one is invariant image of Haiku and another is modern interpretation of it. We tried to rediscover the traditional relationships between humans and nature. Created by. MATSUHISA (Shingo and Hisaya)

Invariant ***yzer Automatically detect and diagnose system failures that have been hardly detectable, and deliver improved service levels with reduced TCO. see this URL, too: www.nec.co.jp