Search Results for author: Junghyun Cho

Found 13 papers, 5 papers with code

VIGFace: Virtual Identity Generation Model for Face Image Synthesis

no code implementations13 Mar 2024 Minsoo Kim, Min-Cheol Sagong, Gi Pyo Nam, Junghyun Cho, Ig-Jae Kim

Initially, we train the face recognition model using a real face dataset and create a feature space for both real and virtual IDs where virtual prototypes are orthogonal to other prototypes.

Face Recognition Image Generation

MAIR: Multi-view Attention Inverse Rendering with 3D Spatially-Varying Lighting Estimation

no code implementations CVPR 2023 Junyong Choi, SeokYeong Lee, Haesol Park, Seung-Won Jung, Ig-Jae Kim, Junghyun Cho

We propose a scene-level inverse rendering framework that uses multi-view images to decompose the scene into geometry, a SVBRDF, and 3D spatially-varying lighting.

Inverse Rendering Lighting Estimation

Few-shot Neural Radiance Fields Under Unconstrained Illumination

no code implementations21 Mar 2023 SeokYeong Lee, Junyong Choi, Seungryong Kim, Ig-Jae Kim, Junghyun Cho

In this paper, we introduce a new challenge for synthesizing novel view images in practical environments with limited input multi-view images and varying lighting conditions.

Novel View Synthesis

K-FACE: A Large-Scale KIST Face Database in Consideration with Unconstrained Environments

1 code implementation3 Mar 2021 Yeji Choi, Hyunjung Park, Gi Pyo Nam, Haksub Kim, Heeseung Choi, Junghyun Cho, Ig-Jae Kim

In this paper, we introduce a new large-scale face database from KIST, denoted as K-FACE, and describe a novel capturing device specifically designed to obtain the data.

Age Estimation Face Model +1

A 3D model-based approach for fitting masks to faces in the wild

1 code implementation1 Mar 2021 Je Hyeong Hong, Hanjo Kim, Minsoo Kim, Gi Pyo Nam, Junghyun Cho, Hyeong-Seok Ko, Ig-Jae Kim

Our method proceeds by first fitting a 3D morphable model on the input image, second overlaying the mask surface onto the face model and warping the respective mask texture, and last projecting the 3D mask back to 2D.

Face Model Face Recognition

ElderSim: A Synthetic Data Generation Platform for Human Action Recognition in Eldercare Applications

no code implementations28 Oct 2020 Hochul Hwang, Cheongjae Jang, Geonwoo Park, Junghyun Cho, Ig-Jae Kim

We then generate KIST SynADL, a large-scale synthetic dataset of elders' activities of daily living, from ElderSim and use the data in addition to real datasets to train three state-of the-art human action recognition models.

Action Recognition Synthetic Data Generation +1

Cylindrical Convolutional Networks for Joint Object Detection and Viewpoint Estimation

no code implementations CVPR 2020 Sunghun Joung, Seungryong Kim, Hanjae Kim, Minsu Kim, Ig-Jae Kim, Junghyun Cho, Kwanghoon Sohn

To overcome this limitation, we introduce a learnable module, cylindrical convolutional networks (CCNs), that exploit cylindrical representation of a convolutional kernel defined in the 3D space.

Object object-detection +2

Towards an Appropriate Query, Key, and Value Computation for Knowledge Tracing

5 code implementations14 Feb 2020 Youngduck Choi, Youngnam Lee, Junghyun Cho, Jineon Baek, Byung-soo Kim, Yeongmin Cha, Dongmin Shin, Chan Bae, Jaewe Heo

To the best of our knowledge, this is the first work to suggest an encoder-decoder model for knowledge tracing that applies deep self-attentive layers to exercises and responses separately.

Collaborative Filtering Knowledge Tracing

Deep Attentive Study Session Dropout Prediction in Mobile Learning Environment

no code implementations14 Feb 2020 Youngnam Lee, Dongmin Shin, HyunBin Loh, Jaemin Lee, Piljae Chae, Junghyun Cho, Seoyon Park, Jinhwan Lee, Jineon Baek, Byung-soo Kim, Youngduck Choi

First, we define the concept of the study session, study session dropout and study session dropout prediction task in a mobile learning environment.

Assessment Modeling: Fundamental Pre-training Tasks for Interactive Educational Systems

no code implementations1 Jan 2020 Youngduck Choi, Youngnam Lee, Junghyun Cho, Jineon Baek, Dongmin Shin, Hangyeol Yu, Yugeun Shim, Seewoo Lee, JongHun Shin, Chan Bae, Byungsoo Kim, Jaewe Heo

However, such methods fail to utilize the full range of student interaction data available and do not model student learning behavior.

EdNet: A Large-Scale Hierarchical Dataset in Education

1 code implementation6 Dec 2019 Youngduck Choi, Youngnam Lee, Dongmin Shin, Junghyun Cho, Seoyon Park, Seewoo Lee, Jineon Baek, Chan Bae, Byung-soo Kim, Jaewe Heo

With advances in Artificial Intelligence in Education (AIEd) and the ever-growing scale of Interactive Educational Systems (IESs), data-driven approach has become a common recipe for various tasks such as knowledge tracing and learning path recommendation.

Knowledge Tracing

Creating A Neural Pedagogical Agent by Jointly Learning to Review and Assess

2 code implementations26 Jun 2019 Youngnam Lee, Youngduck Choi, Junghyun Cho, Alexander R. Fabbri, HyunBin Loh, Chanyou Hwang, Yongku Lee, Sang-Wook Kim, Dragomir Radev

Our model outperforms existing approaches over several metrics in predicting user response correctness, notably out-performing other methods on new users without large question-response histories.

Machine Translation TAG

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