公开(公告)号：US20230084960A1

公开(公告)日：2023-03-16

申请号：US18056144

申请日：2022-11-16

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Junhwan JANG ,  Woochool PARK ,  Jinwook YANG ,  Minsu CHOI ,  Junsuk LEE ,  Bonjae KOO

IPC: G06T19/00

Abstract: An edge server for providing a virtual reality (VR) image is proposed. The server may include a rendering synchronization unit synchronizing a visual field and a margin with a virtual reality device. The server may also include a rendering unit generating a rendered image by rendering a visual field area corresponding to the visual field and a margin area corresponding to the margin based on a rotation center in an entire virtual reality image. The server may further include an encoding unit generating a reduced margin area by dividing a resolution of the margin area by a scaling factor, and encoding the visual field area and the reduced margin area to generate a split virtual reality image including the encoded visual field area and the encoded reduced margin area. The server may further include a streaming transmission unit transmitting the split virtual reality image to the virtual reality device.

公开(公告)号：US20210236929A1

公开(公告)日：2021-08-05

申请号：US17235528

申请日：2021-04-20

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Junhwan JANG ,  Woochool PARK ,  Jinwook YANG ,  Sangpil YOON ,  Minsu CHOI ,  Junsuk LEE ,  Suho SONG ,  Bonjae KOO

IPC: A63F13/5252 ,  H04N5/232

Abstract: This application relates to an apparatus and method for acquiring an in-game 360 virtual reality (VR) image by using a plurality of virtual cameras. In one aspect, the image acquisition apparatus includes a virtual camera group taking in-game images by using the plurality of virtual cameras. The image acquisition apparatus may also include a renderer generating textures for the taken images, generating a panoramic image by performing an equirectangular projection (ERP) mapping of the generated textures, and encoding the generated panoramic image. The image acquisition apparatus may further include an image generator generating a 360 VR image by combining audio information with the encoded panoramic image.

公开(公告)号：US20240107098A1

公开(公告)日：2024-03-28

申请号：US18529607

申请日：2023-12-05

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Junhwan JANG ,  Woochool PARK ,  Minsu CHOI ,  Junsuk LEE ,  Bonjae KOO

IPC: H04N21/266 ,  G06T15/00 ,  G06T19/00 ,  H04N21/234 ,  H04N21/258 ,  H04N21/442 ,  H04N21/81

CPC classification number: H04N21/266 ,  G06T15/00 ,  G06T19/006 ,  H04N21/234 ,  H04N21/25841 ,  H04N21/44209 ,  H04N21/8146

Abstract: Proposed are a mediation server operation method for an XR streaming service and XR streaming system supporting same, the mediation server operation method comprising the steps of: if a mediation server receives an XR content playback request from a connected user device, searching for an idle split rendering server; allocating the found idle split rendering server to the user device; receiving image data and sensor data from the user device; generating a rotation matrix on the basis of the received image data and sensor data; and transmitting the rotation matrix to the allocated split rendering server.

公开(公告)号：US20230100111A1

公开(公告)日：2023-03-30

申请号：US18062819

申请日：2022-12-07

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Junhwan JANG ,  Woochool PARK ,  Jinwook YANG ,  Minsu CHOI ,  Junsuk LEE ,  Bonjae KOO

IPC: G06T19/00 ,  G06T19/20 ,  G06T7/70 ,  G06V10/44 ,  G06V10/74 ,  G06V20/40

Abstract: A content server and method supporting low-latency content streaming are proposed. The content server may include a communication unit and a controller. The communication unit may perform communication with a user terminal. The controller may calculate coordinates for a current user's location and camera pose and create a three-dimensional (3D) space by using terminal data including an image received from the user terminal upon detecting access of the user terminal. Also, the controller may position an object in the created 3D space, render a video reproduced from a user's viewpoint as a two-dimensional (2D) video, generate server data by segmenting the rendered 2D video, and transmit the generated server data to the user terminal.