Search Results for author: Vassilis Athitsos

Found 20 papers, 4 papers with code

TriHorn-Net: A Model for Accurate Depth-Based 3D Hand Pose Estimation

1 code implementation14 Jun 2022 Mohammad Rezaei, Razieh Rastgoo, Vassilis Athitsos

The second innovation is PixDropout, which is, to the best of our knowledge, the first appearance-based data augmentation method for hand depth images.

3D Hand Pose Estimation Data Augmentation +1

All You Need In Sign Language Production

no code implementations5 Jan 2022 Razieh Rastgoo, Kourosh Kiani, Sergio Escalera, Vassilis Athitsos, Mohammad Sabokrou

To make an easy and mutual communication between the hearing-impaired and the hearing communities, building a robust system capable of translating the spoken language into sign language and vice versa is fundamental.

Cultural Vocal Bursts Intensity Prediction Sign Language Production +2

A Survey on Deep learning based Document Image Enhancement

no code implementations6 Dec 2021 Zahra Anvari, Vassilis Athitsos

Digitized documents such as scientific articles, tax forms, invoices, contract papers, historic texts are widely used nowadays.

Binarization Denoising +4

Cross Your Body: A Cognitive Assessment System for Children

no code implementations24 Nov 2021 Saif Sayed, Vassilis Athitsos

It is our goal that this system will be useful in advancing research in cognitive assessment of kids.

Action Recognition

Hierarchical Modeling for Task Recognition and Action Segmentation in Weakly-Labeled Instructional Videos

1 code implementation12 Oct 2021 Reza Ghoddoosian, Saif Sayed, Vassilis Athitsos

This paper focuses on task recognition and action segmentation in weakly-labeled instructional videos, where only the ordered sequence of video-level actions is available during training.

Action Segmentation Segmentation

Gated Fusion Network for SAO Filter and Inter Frame Prediction in Versatile Video Coding

no code implementations25 May 2021 Shiba Kuanar, Dwarikanath Mahapatra, Vassilis Athitsos, K. R Rao

To achieve higher coding efficiency, Versatile Video Coding (VVC) includes several novel components, but at the expense of increasing decoder computational complexity.

Blocking Denoising

Multi-scale Deep Learning Architecture for Nucleus Detection in Renal Cell Carcinoma Microscopy Image

no code implementations28 Apr 2021 Shiba Kuanar, Vassilis Athitsos, Dwarikanath Mahapatra, Anand Rajan

Clear cell renal cell carcinoma (ccRCC) is one of the most common forms of intratumoral heterogeneity in the study of renal cancer.

Action Duration Prediction for Segment-Level Alignment of Weakly-Labeled Videos

1 code implementation20 Nov 2020 Reza Ghoddoosian, Saif Sayed, Vassilis Athitsos

This paper focuses on weakly-supervised action alignment, where only the ordered sequence of video-level actions is available for training.

Domain Adaptive Transfer Learning on Visual Attention Aware Data Augmentation for Fine-grained Visual Categorization

no code implementations6 Oct 2020 Ashiq Imran, Vassilis Athitsos

We perform our experiment on six challenging and commonly used FGVC datasets, and we show competitive improvement on accuracies by using attention-aware data augmentation techniques with features derived from deep learning model InceptionV3, pre-trained on large scale datasets.

Data Augmentation Fine-Grained Image Classification +2

Evaluating Single Image Dehazing Methods Under Realistic Sunlight Haze

no code implementations31 Aug 2020 Zahra Anvari, Vassilis Athitsos

Most existing methods assume that haze has a uniform/homogeneous distribution and haze can have a single color, i. e. grayish white color similar to smoke, while in reality haze can be distributed non-uniformly with different patterns and colors.

Image Dehazing object-detection +3

Dehaze-GLCGAN: Unpaired Single Image De-hazing via Adversarial Training

no code implementations15 Aug 2020 Zahra Anvari, Vassilis Athitsos

Most current solutions require paired image datasets that include both hazy images and their corresponding haze-free ground-truth images.

Generative Adversarial Network Image-to-Image Translation +1

A Realistic Dataset and Baseline Temporal Model for Early Drowsiness Detection

6 code implementations15 Apr 2019 Reza Ghoddoosian, Marnim Galib, Vassilis Athitsos

We present a large and public real-life dataset of 60 subjects, with video segments labeled as alert, low vigilant, or drowsy.

Direct Shape Regression Networks for End-to-End Face Alignment

no code implementations CVPR 2018 Xin Miao, Xian-Tong Zhen, Xianglong Liu, Cheng Deng, Vassilis Athitsos, Heng Huang

In this paper, we propose the direct shape regression network (DSRN) for end-to-end face alignment by jointly handling the aforementioned challenges in a unified framework.

Face Alignment regression +1

Towards Deep Learning based Hand Keypoints Detection for Rapid Sequential Movements from RGB Images

no code implementations3 Apr 2018 Srujana Gattupalli, Ashwin Ramesh Babu, James Robert Brady, Fillia Makedon, Vassilis Athitsos

Hand keypoints detection and pose estimation has numerous applications in computer vision, but it is still an unsolved problem in many aspects.

Keypoint Detection

Context-Aware Single-Shot Detector

no code implementations27 Jul 2017 Wei Xiang, Dong-Qing Zhang, Heather Yu, Vassilis Athitsos

SSD is one of the state-of-the-art object detection algorithms, and it combines high detection accuracy with real-time speed.

object-detection Object Detection

Improving the Accuracy of the CogniLearn System for Cognitive Behavior Assessment

no code implementations25 Mar 2017 Amir Ghaderi, Srujana Gattupalli, Dylan Ebert, Ali Sharifara, Vassilis Athitsos, Fillia Makedon

As a result of these improvements, the accuracy in recognizing cases where subjects touch their toes has gone from 76. 46% in our previous work to 97. 19% in this paper.

Selective Unsupervised Feature Learning with Convolutional Neural Network (S-CNN)

no code implementations7 Jun 2016 Amir Ghaderi, Vassilis Athitsos

Selective Convolutional Neural Network (S-CNN) is a simple and fast algorithm, it introduces a new way to do unsupervised feature learning, and it provides discriminative features which generalize well.

Image Classification Object Recognition

Evaluation of Deep Learning based Pose Estimation for Sign Language Recognition

no code implementations29 Feb 2016 Srujana Gattupalli, Amir Ghaderi, Vassilis Athitsos

Human body pose estimation and hand detection are two important tasks for systems that perform computer vision-based sign language recognition(SLR).

Hand Detection Pose Estimation +2

Principal motion components for gesture recognition using a single-example

no code implementations17 Oct 2013 Hugo Jair Escalante, Isabelle Guyon, Vassilis Athitsos, Pat Jangyodsuk, Jun Wan

In the considered scenario a single training-video is available for each gesture to be recognized, which limits the application of traditional techniques (e. g., HMMs).

Gesture Recognition

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