Search Results for author: Youngjun Kwak

Found 7 papers, 0 papers with code

Robust face anti-spoofing framework with Convolutional Vision Transformer

no code implementations24 Jul 2023 Yunseung Lee, Youngjun Kwak, JinHo Shin

Owing to the advances in image processing technology and large-scale datasets, companies have implemented facial authentication processes, thereby stimulating increased focus on face anti-spoofing (FAS) against realistic presentation attacks.

Domain Generalization Face Anti-Spoofing +1

Liveness score-based regression neural networks for face anti-spoofing

no code implementations19 Feb 2023 Youngjun Kwak, Minyoung Jung, Hunjae Yoo, JinHo Shin, Changick Kim

In this paper, we propose a liveness score-based regression network for overcoming the dependency on third party networks and users.

Face Anti-Spoofing regression

A Generalized and Robust Method Towards Practical Gaze Estimation on Smart Phone

no code implementations16 Oct 2019 Tianchu Guo, Yongchao Liu, HUI ZHANG, Xiabing Liu, Youngjun Kwak, Byung In Yoo, Jae-Joon Han, Changkyu Choi

For the second issue, we define a new metric to measure the robustness of gaze estimator, and propose an adversarial training based Disturbance with Ordinal loss (DwO) method to improve it.

Gaze Estimation Knowledge Distillation

Learning to Quantize Deep Networks by Optimizing Quantization Intervals with Task Loss

no code implementations CVPR 2019 Sangil Jung, Changyong Son, Seohyung Lee, Jinwoo Son, Youngjun Kwak, Jae-Joon Han, Sung Ju Hwang, Changkyu Choi

We demonstrate the effectiveness of our trainable quantizer on ImageNet dataset with various network architectures such as ResNet-18, -34 and AlexNet, on which it outperforms existing methods to achieve the state-of-the-art accuracy.

Quantization

Deep generative-contrastive networks for facial expression recognition

no code implementations21 Mar 2017 Youngsung Kim, ByungIn Yoo, Youngjun Kwak, Changkyu Choi, Junmo Kim

In this paper, we propose to utilize contrastive representation that embeds a distinctive expressive factor for a discriminative purpose.

Facial Expression Recognition Facial Expression Recognition (FER)

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