Search Results for author: Salman H. Khan

Found 22 papers, 6 papers with code

Accuracy vs. Complexity: A Trade-off in Visual Question Answering Models

no code implementations20 Jan 2020 Moshiur R. Farazi, Salman H. Khan, Nick Barnes

However, modelling the visual and semantic features in a high dimensional (joint embedding) space is computationally expensive, and more complex models often result in trivial improvements in the VQA accuracy.

Question Answering Visual Question Answering

Random Path Selection for Continual Learning

1 code implementation NeurIPS 2019 Jathushan Rajasegaran, Munawar Hayat, Salman H. Khan, Fahad Shahbaz Khan, Ling Shao

In order to maintain an equilibrium between previous and newly acquired knowledge, we propose a simple controller to dynamically balance the model plasticity.

Continual Learning Incremental Learning +1

Question-Agnostic Attention for Visual Question Answering

no code implementations9 Aug 2019 Moshiur R. Farazi, Salman H. Khan, Nick Barnes

Visual Question Answering (VQA) models employ attention mechanisms to discover image locations that are most relevant for answering a specific question.

Question Answering Visual Question Answering

Unsupervised Primitive Discovery for Improved 3D Generative Modeling

no code implementations CVPR 2019 Salman H. Khan, Yulan Guo, Munawar Hayat, Nick Barnes

Using the primitive parts for shapes as attributes, a parameterized 3D representation is modeled in the first stage.

3D Shape Generation

Cross-Domain Transferability of Adversarial Perturbations

2 code implementations NeurIPS 2019 Muzammal Naseer, Salman H. Khan, Harris Khan, Fahad Shahbaz Khan, Fatih Porikli

To this end, we propose a framework capable of launching highly transferable attacks that crafts adversarial patterns to mislead networks trained on wholly different domains.

Image Super-Resolution as a Defense Against Adversarial Attacks

1 code implementation7 Jan 2019 Aamir Mustafa, Salman H. Khan, Munawar Hayat, Jianbing Shen, Ling Shao

The proposed scheme is simple and has the following advantages: (1) it does not require any model training or parameter optimization, (2) it complements other existing defense mechanisms, (3) it is agnostic to the attacked model and attack type and (4) it provides superior performance across all popular attack algorithms.

Adversarial Defense Image Enhancement +2

Task-generalizable Adversarial Attack based on Perceptual Metric

1 code implementation22 Nov 2018 Muzammal Naseer, Salman H. Khan, Shafin Rahman, Fatih Porikli

Deep neural networks (DNNs) can be easily fooled by adding human imperceptible perturbations to the images.

Adversarial Attack object-detection +2

Local Gradients Smoothing: Defense against localized adversarial attacks

5 code implementations3 Jul 2018 Muzammal Naseer, Salman H. Khan, Fatih Porikli

Deep neural networks (DNNs) have shown vulnerability to adversarial attacks, i. e., carefully perturbed inputs designed to mislead the network at inference time.

Adversarial Attack

Reciprocal Attention Fusion for Visual Question Answering

no code implementations11 May 2018 Moshiur R. Farazi, Salman H. Khan

Existing attention mechanisms either attend to local image grid or object level features for Visual Question Answering (VQA).

Object Question Answering +2

Adversarial Training of Variational Auto-encoders for High Fidelity Image Generation

1 code implementation27 Apr 2018 Salman H. Khan, Munawar Hayat, Nick Barnes

Our model simultaneously learns to match the data, reconstruction loss and the latent distributions of real and fake images to improve the quality of generated samples.

Image Generation Vocal Bursts Intensity Prediction

Indoor Scene Understanding in 2.5/3D for Autonomous Agents: A Survey

no code implementations9 Mar 2018 Muzammal Naseer, Salman H. Khan, Fatih Porikli

With the availability of low-cost and compact 2. 5/3D visual sensing devices, computer vision community is experiencing a growing interest in visual scene understanding of indoor environments.

3D Reconstruction object-detection +6

Scene Categorization With Spectral Features

no code implementations ICCV 2017 Salman H. Khan, Munawar Hayat, Fatih Porikli

To the best of our knowledge, this is the first attempt to use deep learning based spectral features explicitly for image classification task.

Attribute Image Classification

A Unified approach for Conventional Zero-shot, Generalized Zero-shot and Few-shot Learning

no code implementations27 Jun 2017 Shafin Rahman, Salman H. Khan, Fatih Porikli

Then, it learns how to combine these directions to obtain the principal direction for each unseen class such that the CAPD of the test image is aligned with the semantic embedding of the true class, and opposite to the other classes.

Generalized Zero-Shot Learning One-Shot Learning

Learning deep structured network for weakly supervised change detection

no code implementations7 Jun 2016 Salman H. Khan, Xuming He, Fatih Porikli, Mohammed Bennamoun, Ferdous Sohel, Roberto Togneri

We apply a constrained mean-field algorithm to estimate the pixel-level labels, and use the estimated labels to update the parameters of the CNN in an iterative EM framework.

Change Detection

Contractive Rectifier Networks for Nonlinear Maximum Margin Classification

no code implementations ICCV 2015 Senjian An, Munawar Hayat, Salman H. Khan, Mohammed Bennamoun, Farid Boussaid, Ferdous Sohel

The contractive constraints ensure that the achieved separating margin in the input space is larger than or equal to the separating margin in the output layer.

Classification General Classification

A Spatial Layout and Scale Invariant Feature Representation for Indoor Scene Classification

no code implementations18 Jun 2015 Munawar Hayat, Salman H. Khan, Mohammed Bennamoun, Senjian An

This paper introduces a new learnable feature descriptor called "spatial layout and scale invariant convolutional activations" to deal with these challenges.

General Classification Scene Classification

Separating Objects and Clutter in Indoor Scenes

no code implementations CVPR 2015 Salman H. Khan, Xuming He, Mohammed Bennamoun, Ferdous Sohel, Roberto Togneri

Objects' spatial layout estimation and clutter identification are two important tasks to understand indoor scenes.

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