Venkatesh Babu Radhakrishnan

ORCID: 0000-0002-1926-1804
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About
Contact & Profiles
Research Areas
  • Anomaly Detection Techniques and Applications
  • Human Pose and Action Recognition
  • Advanced Image and Video Retrieval Techniques
  • Visual Attention and Saliency Detection
  • Domain Adaptation and Few-Shot Learning
  • Scientific Computing and Data Management
  • Multimodal Machine Learning Applications
  • Advanced Graph Theory Research
  • Computational Geometry and Mesh Generation
  • Complexity and Algorithms in Graphs
  • Generative Adversarial Networks and Image Synthesis
  • Formal Methods in Verification
  • Data Quality and Management
  • Video Surveillance and Tracking Methods
  • Machine Learning and Algorithms
  • Advanced Vision and Imaging
  • Adversarial Robustness in Machine Learning
  • semigroups and automata theory
  • Advanced Neural Network Applications
  • Machine Learning and Data Classification
  • DNA and Biological Computing
  • Research Data Management Practices
  • Data Management and Algorithms
  • Hand Gesture Recognition Systems
  • Distributed and Parallel Computing Systems

Indian Institute of Science Bangalore
2014-2022

Preferred Networks (Japan)
2019

Oracle (United States)
2011-2017

LinkedIn (United States)
2016

Meta (Israel)
2015

Hewlett-Packard (United States)
1994-2002

Wipro (India)
2000

University at Albany, State University of New York
1992-1998

Los Alamos National Laboratory
1998

We introduce a detection framework for dense crowd counting and eliminate the need prevalent density regression paradigm. Typical models predict an image as opposed to detecting every person. These methods, in general, fail localize persons accurate enough most applications other than counting. Hence, we adopt architecture that <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">locate</i> s person crowd,...

10.1109/tpami.2020.2974830 article EN IEEE Transactions on Pattern Analysis and Machine Intelligence 2020-01-01

Reconstructing a high-resolution 3D model of an object is challenging task in computer vision. Designing scalable and light-weight architectures crucial while addressing this problem. Existing point-cloud based reconstruction approaches directly predict the entire point cloud single stage. Although technique can handle low-resolution clouds, it not viable solution for generating dense, outputs. In work, we introduce DensePCR, deep pyramidal network that hierarchically predicts clouds...

10.1109/wacv.2019.00117 article EN 2019-01-01

Though Deep Neural Networks (DNN) show excellent performance across various computer vision tasks, several works their vulnerability to adversarial samples, i.e., image samples with imperceptible noise engineered manipulate the network's prediction. Adversarial sample generation methods range from simple complex optimization techniques. Majority of these generate adversaries through objectives that are tied pre-softmax or softmax output network. In this work we, (i) drawbacks such attacks,...

10.1109/iccv.2019.00816 article EN 2021 IEEE/CVF International Conference on Computer Vision (ICCV) 2019-10-01

An unsupervised human action modeling framework can provide useful pose-sequence representation, which be utilized in a variety of pose analysis applications. In this work we propose novel temporal framework, embed the dynamics 3D human-skeleton joints to latent space an efficient manner. contrast end-to-end explored by previous works, disentangle task individual representation learning from actions as sequence embeddings. order realize continuous embedding manifold along with better...

10.1109/wacv.2019.00160 article EN 2019-01-01

We prove the #P-hardness of counting problems associated with various satisfiability, graph, and combinatorial problems, when restricted to planar instances. These include 3Sat, 1-3Sat, 1-Ex3Sat, Minimum Vertex Cover, Dominating Set, Feedback X3C, Partition Into Triangles, Clique Cover. also NP-completeness Ambiguous Satisfiability} [J. B. Saxe, Two Papers on Graph Embedding Problems, Tech. Report CMU-CS-80-102, Dept. Computer Science, Carnegie Mellon Univ., Pittsburgh, PA, 1980]...

10.1137/s0097539793304601 article EN SIAM Journal on Computing 1998-08-01

Aiming towards human-level generalization, there is a need to explore adaptable representation learning methods with greater transferability. Most existing approaches independently address task-transferability and cross-domain adaptation, resulting in limited generalization. In this paper, we propose UM-Adapt - unified framework effectively perform unsupervised domain adaptation for spatially-structured prediction tasks, simultaneously maintaining balanced performance across individual tasks...

10.1109/iccv.2019.00152 article EN 2021 IEEE/CVF International Conference on Computer Vision (ICCV) 2019-10-01

Freehand sketching is an inherently sequential process. Yet, most approaches for hand-drawn sketch recognition either ignore this aspect or exploit it in ad-hoc manner. In our work, we propose a recurrent neural network architecture object which exploits the long-term and structural regularities stroke data scalable Specifically, introduce Gated Recurrent Unit based framework leverages deep features weighted per-timestep loss to achieve state-of-the-art results on large database of freehand...

10.1145/2964284.2967220 article EN Proceedings of the 30th ACM International Conference on Multimedia 2016-09-29

Estimation of 3D human pose from monocular image has gained considerable attention, as a key step to several human-centric applications. However, generalizability estimation models developed using supervision on large-scale in-studio datasets remains questionable, these often perform unsatisfactorily unseen in-the-wild environments. Though weakly-supervised have been proposed address this shortcoming, performance such relies availability paired some related task, 2D or multi-view pairs. In...

10.1609/aaai.v34i07.6792 article EN Proceedings of the AAAI Conference on Artificial Intelligence 2020-04-03

In this era of digital information explosion, an abundance data from numerous modalities is being generated as well archived everyday. However, most problems associated with training Deep Neural Networks still revolve around lack that rich enough for a given task. Data required not only initial model, but also future learning tasks such Model Compression and Incremental Learning. A diverse dataset may be used it feasible to store throughout the product life cycle due privacy issues or memory...

10.1609/aaai.v34i04.5709 article EN Proceedings of the AAAI Conference on Artificial Intelligence 2020-04-03

The ability to semantically interpret hand-drawn line sketches, although very challenging, can pave way for novel applications in multimedia. We propose SKETCHPARSE, the first deep-network architecture fully automatic parsing of freehand object sketches. SKETCHPARSE is configured as a two-level convolutional network. level contains shared layers common all categories. second number expert sub-networks. Each specializes sketches from categories which contain structurally similar parts....

10.1145/3123266.3123270 article EN Proceedings of the 30th ACM International Conference on Multimedia 2017-10-19

Data provenance is essential for debugging query results, auditing data in cloud environments, and explaining outputs of Big analytics. A well-established technique to represent as annotations on instrument queries propagate these produce results annotated with provenance. However, even sophisticated optimizers are often incapable producing efficient execution plans instrumented queries, because their inherent complexity unusual structure. Thus, while instrumentation enables support...

10.1109/icde.2017.104 article EN 2017-04-01

Action recognition plays an important role in various applications, including smart homes and personal assistive robotics. In this paper, we propose algorithm for recognizing human actions using motion capture action data. Motion data provides accurate three dimensional positions of joints which constitute the skeleton. We model movement skeletal temporally order to classify action. The skeleton each frame sequence is represented as a 129 vector, component 3D angle made by joint with fixed...

10.1109/issnip.2014.6827664 article EN 2014-04-01

Provenance for transactional updates is critical many applications such as auditing and debugging of transactions. Recently, we have introduced MV-semirings, an extension the semiring provenance model that supports Furthermore, proposed reenactment, a declarative form replay with capture, efficient non-invasive method computing this type provenance. However, approach limited to snapshot isolation (SI) concurrency control protocol while real world apply read committed version (RC-SI) improve...

10.1145/2983323.2983825 preprint EN 2016-10-24

We propose a novel recurrent network-based HDR deghosting method for fusing arbitrary length dynamic sequences. The proposed uses convolutional and architectures to generate visually pleasing, ghosting-free images. introduce new cell architecture, namely Self-Gated Memory (SGM) cell, that outperforms the standard LSTM while containing fewer parameters having faster running times. In SGM information flow through gate is controlled by multiplying gate's output function of itself. Additionally,...

10.1109/tci.2021.3112920 article EN IEEE Transactions on Computational Imaging 2021-01-01

We present a biologically inspired recurrent neural network (RNN) that efficiently detects changes in natural images. The model features sparse, topographic connectivity (st-RNN), closely modeled on the circuit architecture of “midbrain attention network.” deployed st-RNN challenging change blindness task, which must be detected discontinuous sequence Compared with conventional RNN, learned 9x faster and achieved state-of-the-art performance 15x fewer connections. An analysis low-dimensional...

10.1523/jneurosci.0164-22.2022 article EN cc-by-nc-sa Journal of Neuroscience 2022-09-19

As a form of visual representation, freehand line sketches are typically studied as an end product the sketching process. However, from recognition point view, one can also study various orderings and properties primitive strokes that compose sketch. Studying in this manner has enabled us to create novel sparse yet discriminative sketch-based representations for object categories which we term category-epitomes. Concurrently, epitome construction provides natural measure quantifying...

10.1145/2733373.2806230 article EN 2015-10-13

Despite the remarkable success of generative adversarial networks, their performance seems less impressive for diverse training sets, requiring learning discontinuous mapping functions. Though multi-mode prior or multi-generator models have been proposed to alleviate this problem, such approaches may fail depending on empirically chosen initial mode components. In contrast bottom-up approaches, we present GAN-Tree, which follows a hierarchical divisive strategy address multi-modal data....

10.1109/iccv.2019.00828 article EN 2021 IEEE/CVF International Conference on Computer Vision (ICCV) 2019-10-01
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