Search Results for author: Shiv Ram Dubey

Found 55 papers, 26 papers with code

3D-Convolution Guided Spectral-Spatial Transformer for Hyperspectral Image Classification

1 code implementation20 Apr 2024 Shyam Varahagiri, Aryaman Sinha, Shiv Ram Dubey, Satish Kumar Singh

Furthermore, to have high classification performance, there should be a strong interaction between the HSI token and the class (CLS) token.

Classification Hyperspectral Image Classification

Face to Cartoon Incremental Super-Resolution using Knowledge Distillation

no code implementations27 Jan 2024 Trinetra Devkatte, Shiv Ram Dubey, Satish Kumar Singh, Abdenour Hadid

Facial super-resolution/hallucination is an important area of research that seeks to enhance low-resolution facial images for a variety of applications.

Hallucination Incremental Learning +2

Transformer-based Clipped Contrastive Quantization Learning for Unsupervised Image Retrieval

no code implementations27 Jan 2024 Ayush Dubey, Shiv Ram Dubey, Satish Kumar Singh, Wei-Ta Chu

Unsupervised image retrieval aims to learn the important visual characteristics without any given level to retrieve the similar images for a given query image.

Contrastive Learning Image Retrieval +2

SRTransGAN: Image Super-Resolution using Transformer based Generative Adversarial Network

no code implementations4 Dec 2023 Neeraj Baghel, Shiv Ram Dubey, Satish Kumar Singh

Motivated from the success of transformers in language and vision applications, we propose a SRTransGAN for image super-resolution using transformer based GAN.

Binary Classification Decoder +6

PTSR: Patch Translator for Image Super-Resolution

no code implementations20 Oct 2023 Neeraj Baghel, Shiv Ram Dubey, Satish Kumar Singh

The results of the proposed model is improved on an average for $4\times$ super-resolution by 21. 66% in PNSR score and 11. 59% in SSIM score, as compared to the best competitive models.

Image Super-Resolution SSIM

Transformer-based Generative Adversarial Networks in Computer Vision: A Comprehensive Survey

no code implementations17 Feb 2023 Shiv Ram Dubey, Satish Kumar Singh

This paper presents a comprehensive survey on the developments and advancements in GANs utilizing the Transformer networks for computer vision applications.

Image-to-Image Translation Translation

WSD: Wild Selfie Dataset for Face Recognition in Selfie Images

no code implementations14 Feb 2023 Laxman Kumarapu, Shiv Ram Dubey, Snehasis Mukherjee, Parkhi Mohan, Sree Pragna Vinnakoti, Subhash Karthikeya

In order to alleviate this problem and to facilitate the research on selfie face images, we develop a challenging Wild Selfie Dataset (WSD) where the images are captured from the selfie cameras of different smart phones, unlike existing datasets where most of the images are captured in controlled environment.

Face Recognition

EMAHA-DB1: A New Upper Limb sEMG Dataset for Classification of Activities of Daily Living

no code implementations9 Jan 2023 Naveen Kumar Karnam, Anish Chand Turlapaty, Shiv Ram Dubey, Balakrishna Gokaraju

The state-of-theart classification accuracy on five FAABOS categories is 83:21% by using the SVM classifier with the third order polynomial kernel using energy feature and auto regressive feature set ensemble.

Activity Recognition Classification

AdaNorm: Adaptive Gradient Norm Correction based Optimizer for CNNs

1 code implementation12 Oct 2022 Shiv Ram Dubey, Satish Kumar Singh, Bidyut Baran Chaudhuri

In this paper, we propose a novel AdaNorm based SGD optimizers by correcting the norm of gradient in each iteration based on the adaptive training history of gradient norm.

Object Recognition

T2CI-GAN: Text to Compressed Image generation using Generative Adversarial Network

no code implementations1 Oct 2022 Bulla Rajesh, Nandakishore Dusa, Mohammed Javed, Shiv Ram Dubey, P. Nagabhushan

The first model is directly trained with JPEG compressed DCT images (compressed domain) to generate the compressed images from text descriptions.

Computational Efficiency Generative Adversarial Network +1

Context Unaware Knowledge Distillation for Image Retrieval

1 code implementation19 Jul 2022 Bytasandram Yaswanth Reddy, Shiv Ram Dubey, Rakesh Kumar Sanodiya, Ravi Ranjan Prasad Karn

Existing knowledge distillation methods use logits and other features of the deep (teacher) model and as knowledge for the compact (student) model, which requires the teacher's network to be fine-tuned on the context in parallel with the student model on the context.

Image Retrieval Knowledge Distillation +2

Moment Centralization based Gradient Descent Optimizers for Convolutional Neural Networks

1 code implementation19 Jul 2022 Sumanth Sadu, Shiv Ram Dubey, SR Sreeja

However, the existing optimizers are not able to maintain a zero mean in the first-order moment and struggle with optimization.

Image Classification

Target Aware Network Architecture Search and Compression for Efficient Knowledge Transfer

1 code implementation12 May 2022 S. H. Shabbeer Basha, Debapriya Tula, Sravan Kumar Vinakota, Shiv Ram Dubey

Later, in the second stage, the redundant filters are pruned from the fine-tuned CNN to decrease the network's complexity for the target task while preserving the performance.

Sentiment Analysis Transfer Learning

HRel: Filter Pruning based on High Relevance between Activation Maps and Class Labels

1 code implementation22 Feb 2022 CH Sarvani, Mrinmoy Ghorai, Shiv Ram Dubey, SH Shabbeer Basha

Even after pruning the filters from convolutional layers of LeNet-5 drastically (i. e. from 20, 50 to 2, 3, respectively), only a small accuracy drop of 0. 52\% is observed.

Information Plane

HWRCNet: Handwritten Word Recognition in JPEG Compressed Domain using CNN-BiLSTM Network

no code implementations4 Jan 2022 Bulla Rajesh, Abhishek Kumar Gupta, Ayush Raj, Mohammed Javed, Shiv Ram Dubey

Handwritten word recognition from document images using deep learning is an active research area in the field of Document Image Analysis and Recognition.

Activation Functions in Deep Learning: A Comprehensive Survey and Benchmark

1 code implementation29 Sep 2021 Shiv Ram Dubey, Satish Kumar Singh, Bidyut Baran Chaudhuri

The most popular and common non-linearity layers are activation functions (AFs), such as Logistic Sigmoid, Tanh, ReLU, ELU, Swish and Mish.

Vision Transformer Hashing for Image Retrieval

1 code implementation26 Sep 2021 Shiv Ram Dubey, Satish Kumar Singh, Wei-Ta Chu

We utilize the pre-trained ViT on ImageNet as the backbone network and add the hashing head.

Deep Hashing Image Retrieval +1

Frequency Disentangled Residual Network

no code implementations26 Sep 2021 Satya Rajendra Singh, Roshan Reddy Yedla, Shiv Ram Dubey, Rakesh Sanodiya, Wei-Ta Chu

Moreover, the computation of low and high frequency components using fixed filters further avoids the overfitting.

Image Classification Image Retrieval +1

AdaInject: Injection Based Adaptive Gradient Descent Optimizers for Convolutional Neural Networks

1 code implementation26 Sep 2021 Shiv Ram Dubey, S. H. Shabbeer Basha, Satish Kumar Singh, Bidyut Baran Chaudhuri

Overall, we observe very promising performance improvement of existing optimizers with the proposed AdaInject approach.

Generative Adversarial Minority Oversampling for Spectral-Spatial Hyperspectral Image Classification

1 code implementation1 Feb 2021 Swalpa Kumar Roy, Juan M. Haut, Mercedes E. Paoletti, Shiv Ram Dubey, and Antonio Plaza

A different classifier from the generator and the discriminator is used in the 3D-HyperGAMO model, which is trained using both original and generated samples to {determine} the classes of newly generated samples to which they actually belong.

Classification General Classification +2

MERANet: Facial Micro-Expression Recognition using 3D Residual Attention Network

no code implementations7 Dec 2020 Viswanatha Reddy Gajjala, Sai Prasanna Teja Reddy, Snehasis Mukherjee, Shiv Ram Dubey

The proposed model takes advantage of spatial-temporal attention and channel attention together, to learn deeper fine-grained subtle features for classification of emotions.

Micro Expression Recognition Micro-Expression Recognition

A Decade Survey of Content Based Image Retrieval using Deep Learning

no code implementations23 Nov 2020 Shiv Ram Dubey

The categorization of existing state-of-the-art methods from different perspectives is also performed for greater understanding of the progress.

Content-Based Image Retrieval Feature Engineering +1

AutoTune: Automatically Tuning Convolutional Neural Networks for Improved Transfer Learning

1 code implementation25 Apr 2020 S. H. Shabbeer Basha, Sravan Kumar Vinakota, Viswanath Pulabaigari, Snehasis Mukherjee, Shiv Ram Dubey

The experimental results obtained in this study depict that tuning of the pre-trained CNN layers with the knowledge from the target dataset confesses better transfer learning ability.

Bayesian Optimization Transfer Learning

AutoFCL: Automatically Tuning Fully Connected Layers for Handling Small Dataset

no code implementations22 Jan 2020 S. H. Shabbeer Basha, Sravan Kumar Vinakota, Shiv Ram Dubey, Viswanath Pulabaigari, Snehasis Mukherjee

Fine-tuning the newly learned (target-dependent) FC layers leads to state-of-the-art performance, according to the experiments carried out in this research.

Bayesian Optimization Image Classification +1

CDGAN: Cyclic Discriminative Generative Adversarial Networks for Image-to-Image Transformation

1 code implementation15 Jan 2020 Kancharagunta Kishan Babu, Shiv Ram Dubey

The proposed CDGAN method outperforms the state-of-the-art methods when compared over the three baseline Image-to-Image transformation datasets.

NASIB: Neural Architecture Search withIn Budget

no code implementations19 Oct 2019 Abhishek Singh, Anubhav Garg, Jinan Zhou, Shiv Ram Dubey, Debo Dutta

Neural Architecture Search (NAS) represents a class of methods to generate the optimal neural network architecture and typically iterate over candidate architectures till convergence over some particular metric like validation loss.

Image Classification Neural Architecture Search

diffGrad: An Optimization Method for Convolutional Neural Networks

1 code implementation12 Sep 2019 Shiv Ram Dubey, Soumendu Chakraborty, Swalpa Kumar Roy, Snehasis Mukherjee, Satish Kumar Singh, Bidyut Baran Chaudhuri

In this paper, a novel optimizer is proposed based on the difference between the present and the immediate past gradient (i. e., diffGrad).

Image Categorization

Visual Question Answering using Deep Learning: A Survey and Performance Analysis

1 code implementation27 Aug 2019 Yash Srivastava, Vaishnav Murali, Shiv Ram Dubey, Snehasis Mukherjee

The Visual Question Answering (VQA) task combines challenges for processing data with both Visual and Linguistic processing, to answer basic `common sense' questions about given images.

Common Sense Reasoning Question Answering +1

Hard-Mining Loss based Convolutional Neural Network for Face Recognition

no code implementations9 Aug 2019 Yash Srivastava, Vaishnav Murali, Shiv Ram Dubey

Various loss functions such as Cross-Entropy, Angular-Softmax and ArcFace have been introduced to learn the weights of network for face recognition.

Face Recognition

Spontaneous Facial Micro-Expression Recognition using 3D Spatiotemporal Convolutional Neural Networks

1 code implementation27 Mar 2019 Sai Prasanna Teja Reddy, Surya Teja Karri, Shiv Ram Dubey, Snehasis Mukherjee

This paper proposes two 3D-CNN methods: MicroExpSTCNN and MicroExpFuseNet, for spontaneous facial micro-expression recognition by exploiting the spatiotemporal information in CNN framework.

Facial Expression Recognition Micro Expression Recognition +1

Impact of Fully Connected Layers on Performance of Convolutional Neural Networks for Image Classification

1 code implementation21 Jan 2019 S. H. Shabbeer Basha, Shiv Ram Dubey, Viswanath Pulabaigari, Snehasis Mukherjee

To automate the process of learning a CNN architecture, this paper attempts at finding the relationship between Fully Connected (FC) layers with some of the characteristics of the datasets.

General Classification Image Classification

A Performance Comparison of Loss Functions for Deep Face Recognition

1 code implementation1 Jan 2019 Yash Srivastava, Vaishnav Murali, Shiv Ram Dubey

Face recognition is one of the most widely publicized feature in the devices today and hence represents an important problem that should be studied with the utmost priority.

Face Recognition

A Multi-Face Challenging Dataset for Robust Face Recognition

no code implementations30 Sep 2018 Shiv Ram Dubey, Snehasis Mukherjee

Multiple face recognition in unconstrained environment is a challenging task, due to the variation of view-point, scale, pose, illumination and expression of the face images.

Face Recognition Robust Face Recognition

A Performance Evaluation of Convolutional Neural Networks for Face Anti Spoofing

no code implementations8 May 2018 Chaitanya Nagpal, Shiv Ram Dubey

Precise detection of spoofed faces should be on the high priority to make face based identity recognition and access control robust against possible attacks.

Face Anti-Spoofing Image Classification

Dual CNN Models for Unsupervised Monocular Depth Estimation

1 code implementation16 Apr 2018 Vamshi Krishna Repala, Shiv Ram Dubey

The unsupervised depth estimation is the recent trend by utilizing the binocular stereo images to get rid of depth map ground truth.

Image Reconstruction Monocular Depth Estimation +1

Average Biased ReLU Based CNN Descriptor for Improved Face Retrieval

no code implementations2 Apr 2018 Shiv Ram Dubey, Soumendu Chakraborty

It is observed that the AB-ReLU outperforms the ReLU when used with a pre-trained VGGFace model over the face datasets.

Retrieval

LDOP: Local Directional Order Pattern for Robust Face Retrieval

no code implementations28 Feb 2018 Shiv Ram Dubey, Snehasis Mukherjee

The proposed local directional order pattern (LDOP) for a particular pixel is computed by finding the relationship between the center pixel and local directional order indexes.

Image Retrieval Retrieval

Local Jet Pattern: A Robust Descriptor for Texture Classification

no code implementations26 Nov 2017 Swalpa Kumar Roy, Bhabatosh Chanda, Bidyut. B. Chaudhuri, Dipak Kumar Ghosh, Shiv Ram Dubey

In this approach, a jet space representation of a texture image is derived from a set of derivatives of Gaussian (DtGs) filter responses up to second order, so called local jet vectors (LJV), which also satisfy the Scale Space properties.

Classification General Classification +1

Local Directional Relation Pattern for Unconstrained and Robust Face Retrieval

no code implementations20 Sep 2017 Shiv Ram Dubey

Very promising performance is observed using the proposed descriptor over very appealing face databases as compared to the existing face descriptors.

Face Recognition Image Retrieval +2

Face Retrieval using Frequency Decoded Local Descriptor

no code implementations16 Sep 2017 Shiv Ram Dubey

In order to increase the discriminative power of the local descriptors, some researchers converted the raw image into multiple images with the help of some high and low pass frequency filters, then the local descriptors are computed over each filtered image and finally concatenated into a single descriptor.

Decoder Retrieval

Fusing Color and Texture Cues to Categorize the Fruit Diseases from Images

no code implementations23 Dec 2014 Shiv Ram Dubey, Anand Singh Jalal

The economic and production losses in agricultural industry worldwide are due to the presence of diseases in the several kinds of fruits.

Clustering General Classification

Adapted Approach for Fruit Disease Identification using Images

no code implementations20 May 2014 Shiv Ram Dubey, Anand Singh Jalal

Diseases in fruit cause devastating problem in economic losses and production in agricultural industry worldwide.

Clustering

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