Search Results for author: Deepu Rajan

Found 11 papers, 3 papers with code

Towards Balanced Active Learning for Multimodal Classification

1 code implementation14 Jun 2023 Meng Shen, Yizheng Huang, Jianxiong Yin, Heqing Zou, Deepu Rajan, Simon See

Our studies demonstrate that the proposed method achieves more balanced multimodal learning by avoiding greedy sample selection from the dominant modality.

Active Learning Classification +1

UniS-MMC: Multimodal Classification via Unimodality-supervised Multimodal Contrastive Learning

1 code implementation16 May 2023 Heqing Zou, Meng Shen, Chen Chen, Yuchen Hu, Deepu Rajan, Eng Siong Chng

Multimodal learning aims to imitate human beings to acquire complementary information from multiple modalities for various downstream tasks.

Contrastive Learning Image-text Classification +2

Speech Emotion Recognition with Co-Attention based Multi-level Acoustic Information

1 code implementation29 Mar 2022 Heqing Zou, Yuke Si, Chen Chen, Deepu Rajan, Eng Siong Chng

In this paper, we propose an end-to-end speech emotion recognition system using multi-level acoustic information with a newly designed co-attention module.

Speech Emotion Recognition

Are object detection assessment criteria ready for maritime computer vision?

no code implementations12 Sep 2018 Dilip K. Prasad, Huixu Dong, Deepu Rajan, Chai Quek

However, the conventional assessment metrics suitable for usual object detection are deficient in the maritime setting.

object-detection Object Detection

A learning-based approach for automatic image and video colorization

no code implementations15 Apr 2017 Raj Kumar Gupta, Alex Yong-Sang Chia, Deepu Rajan, Huang Zhiyong

In this paper, we present a color transfer algorithm to colorize a broad range of gray images without any user intervention.

Colorization Superpixels

L1-regularized Reconstruction Error as Alpha Matte

no code implementations9 Feb 2017 Jubin Johnson, Hisham Cholakkal, Deepu Rajan

Sampling-based alpha matting methods have traditionally followed the compositing equation to estimate the alpha value at a pixel from a pair of foreground (F) and background (B) samples.

Image Matting Video Matting

Backtracking Spatial Pyramid Pooling (SPP)-based Image Classifier for Weakly Supervised Top-down Salient Object Detection

no code implementations16 Nov 2016 Hisham Cholakkal, Jubin Johnson, Deepu Rajan

First, the probabilistic contribution of each image region to the confidence of a CNN-based image classifier is computed through a backtracking strategy to produce top-down saliency.

object-detection RGB Salient Object Detection +1

Backtracking ScSPM Image Classifier for Weakly Supervised Top-Down Saliency

no code implementations CVPR 2016 Hisham Cholakkal, Jubin Johnson, Deepu Rajan

We propose a weakly supervised top-down saliency framework using only binary labels that indicate the presence/absence of an object in an image.

object-detection Object Detection

A Classifier-guided Approach for Top-down Salient Object Detection

no code implementations22 Apr 2016 Hisham Cholakkal, Jubin Johnson, Deepu Rajan

Although the role of the classifier is to support salient object detection, we evaluate its performance in image classification and also illustrate the utility of thresholded saliency maps for image segmentation.

Classification General Classification +7

Sparse Coding for Alpha Matting

no code implementations11 Apr 2016 Jubin Johnson, Ehsan Shahrian Varnousfaderani, Hisham Cholakkal, Deepu Rajan

In this paper, the matting problem is reinterpreted as a sparse coding of pixel features, wherein the sum of the codes gives the estimate of the alpha matte from a set of unpaired F and B samples.

Image Matting Video Matting

Improving Image Matting Using Comprehensive Sampling Sets

no code implementations CVPR 2013 Ehsan Shahrian, Deepu Rajan, Brian Price, Scott Cohen

The first is that the range in which the foreground and background are sampled is often limited to such an extent that the true foreground and background colors are not present.

Image Matting

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