公开(公告)号：US12205323B2

公开(公告)日：2025-01-21

申请号：US17702258

申请日：2022-03-23

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  SOGANG UNIVERSITY RESEARCH FOUNDATION

Inventor： Joon-Soo Kim ,  Kug-Jin Yun ,  Jun-Young Jeong ,  Suk-Ju Kang ,  Jung-Hee Kim ,  Woo-June Park

IPC: G06T7/73

Abstract: Disclosed herein are an apparatus for estimating a camera pose using multi-view images of a 2D array structure and a method using the same. The method performed by the apparatus includes acquiring multi-view images from a 2D array camera system, forming a 2D image link structure corresponding to the multi-view images in consideration of the geometric structure of the camera system, estimating an initial camera pose based on an adjacent image extracted from the 2D image link structure and a pair of corresponding feature points, and estimating a final camera pose by reconstructing a 3D structure based on the initial camera pose and performing correction so as to minimize a reprojection error of the reconstructed 3D structure.

公开(公告)号：US12069238B2

公开(公告)日：2024-08-20

申请号：US18084188

申请日：2022-12-19

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Joon-Soo Kim ,  Joung-Il Yun

IPC: H04N19/103 ,  G06T9/00 ,  G06V10/44 ,  G06V10/74 ,  G06V10/764 ,  G06V10/771 ,  H04N19/513

CPC classification number: H04N19/103 ,  G06T9/00 ,  G06V10/44 ,  G06V10/761 ,  G06V10/764 ,  G06V10/771 ,  H04N19/513

Abstract: Disclosed herein are an image compression method and apparatus for machine vision. The image compression method includes determining a prediction mode for frames of an input image, generating a prediction frame and a residual image using an input frame, generating a reconstructed frame by adding the prediction frame to the residual image, extracting respective features of the input frame and the reconstructed frame, correcting the reconstructed frame based on a difference value between the extracted features and a bit rate of the residual image, and encoding the corrected frame.