Search Results for author: Geonho Cha

Found 10 papers, 2 papers with code

Humans as a Calibration Pattern: Dynamic 3D Scene Reconstruction from Unsynchronized and Uncalibrated Videos

no code implementations26 Dec 2024 Changwoon Choi, Jeongjun Kim, Geonho Cha, Minkwan Kim, Dongyoon Wee, Young Min Kim

While noisy, the estimated human shape and pose parameters provide a decent initialization for the highly non-convex and under-constrained problem of training a consistent dynamic neural representation.

3D Scene Reconstruction NeRF

CoCoGaussian: Leveraging Circle of Confusion for Gaussian Splatting from Defocused Images

no code implementations20 Dec 2024 Jungho Lee, Suhwan Cho, Taeoh Kim, Ho-Deok Jang, Minhyeok Lee, Geonho Cha, Dongyoon Wee, Dogyoon Lee, Sangyoun Lee

While conventional methods depend on sharp images for accurate scene reconstruction, real-world scenarios are often affected by defocus blur due to finite depth of field, making it essential to account for realistic 3D scene representation.

3DGS

ControlFace: Harnessing Facial Parametric Control for Face Rigging

no code implementations2 Dec 2024 Wooseok Jang, Youngjun Hong, Geonho Cha, Seungryong Kim

Manipulation of facial images to meet specific controls such as pose, expression, and lighting, also known as face rigging, is a complex task in computer vision.

Regularizing Dynamic Radiance Fields with Kinematic Fields

no code implementations19 Jul 2024 Woobin Im, Geonho Cha, Sebin Lee, Jumin Lee, Juhyeong Seon, Dongyoon Wee, Sung-Eui Yoon

Our method introduces the kinematic field, capturing motion through kinematic quantities: velocity, acceleration, and jerk.

Out of Sight, Out of Mind: A Source-View-Wise Feature Aggregation for Multi-View Image-Based Rendering

no code implementations10 Jun 2022 Geonho Cha, Chaehun Shin, Sungroh Yoon, Dongyoon Wee

Finally, for each element in the feature set, the aggregation features are extracted by calculating the weighted means and variances, where the weights are derived from the similarity distributions.

Self-Supervised Depth Estimation with Isometric-Self-Sample-Based Learning

no code implementations20 May 2022 Geonho Cha, Ho-Deok Jang, Dongyoon Wee

Most previous methods have alleviated this issue by removing the dynamic regions in the photometric loss formulation based on the masks estimated from another module, making it difficult to fully utilize the training images.

Depth Estimation

Unsupervised 3D Reconstruction Networks

no code implementations ICCV 2019 Geonho Cha, Minsik Lee, Songhwai Oh

The role of the 3D shape reconstructor is to reconstruct the 3D shape of an instance from its 2D feature points, and the rotation estimator infers the camera pose.

3D Reconstruction

Interactive Text2Pickup Network for Natural Language based Human-Robot Collaboration

2 code implementations28 May 2018 Hyemin Ahn, Sungjoon Choi, Nuri Kim, Geonho Cha, Songhwai Oh

To handle the inherent ambiguity in human language commands, a suitable question which can resolve the ambiguity is generated.

Object Position

Deep Pose Consensus Networks

no code implementations22 Mar 2018 Geonho Cha, Minsik Lee, Jungchan Cho, Songhwai Oh

In this paper, to resolve this issue, we propose a multiple-partial-hypothesis-based framework for the problem of estimating 3D human pose from a single image, which can be fine-tuned in an end-to-end fashion.

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