Search Results for author: Changkyu Choi

Found 8 papers, 0 papers with code

RaScaNet: Learning Tiny Models by Raster-Scanning Images

no code implementations CVPR 2021 Jaehyoung Yoo, Dongwook Lee, Changyong Son, Sangil Jung, ByungIn Yoo, Changkyu Choi, Jae-Joon Han, Bohyung Han

RaScaNet reads only a few rows of pixels at a time using a convolutional neural network and then sequentially learns the representation of the whole image using a recurrent neural network.

Binary Classification

Data-free mixed-precision quantization using novel sensitivity metric

no code implementations18 Mar 2021 DongHyun Lee, Minkyoung Cho, Seungwon Lee, Joonho Song, Changkyu Choi

Post-training quantization is a representative technique for compressing neural networks, making them smaller and more efficient for deployment on edge devices.

Quantization

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

Fast adversarial training for semi-supervised learning

no code implementations27 Sep 2018 Dongha Kim, Yongchan Choi, Jae-Joon Han, Changkyu Choi, Yongdai Kim

The proposed method generates bad samples of high-quality by use of the adversarial training used in VAT.

Density Estimation

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)

Rotating Your Face Using Multi-Task Deep Neural Network

no code implementations CVPR 2015 Junho Yim, Heechul Jung, ByungIn Yoo, Changkyu Choi, Dusik Park, Junmo Kim

This paper proposes a new deep architecture based on a novel type of multitask learning, which can achieve superior performance in rotating to a target-pose face image from an arbitrary pose and illumination image while preserving identity.

Face Recognition

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