Granted Patent B2

US 12,423,921 · App. 17/954,568 · Granted Sep 23, 2025

Inventors: Hong Uk Woo (Suwon-si, KR); Yun Ho Kim (Suwon-si, KR); Won Je Choi (Suwon-si, KR)

Assignee: Research & Business Foundation Sungkyunkwan University

G06T19/006H04L67/131

Abstract

Claims (18)

1. An augmented reality (AR) share system, comprising:

a device for sharing AR information, the device configured to select a predetermined number of specific frames, among a plurality of frames used for a registration process of a cloud anchor; and

a server configured to:

receive the predetermined number of specific frames selected by the device; and

generate an auxiliary plane anchor defining a position of a virtual object based on the predetermined number of specific frames selected by the device, wherein the device comprises:

an AR system configured to register a position of the cloud anchor for coordinate synchronization of the virtual object; and

an image selector configured to:

extract frames exceeding a number of set reference feature points, among the plurality of frames used to register the cloud anchor, based on feature point information set in the AR system; and

select the predetermined number of specific frames with a minimum ratio of feature points overlapping between the frames, among the plurality of frames, which is higher than a predetermined reference ratio, and

wherein the number of the set reference feature points and the minimum ratio of feature points comprise references for selecting images used for the AR share system to generate virtual objects.

2. The AR share system of claim 1 , wherein, in response to the predetermined number of specific frames being transmitted, the image selector is further configured to transmit a cloud anchor pose of each of the predetermined number of specific frames and a cloud anchor identification (ID) to the server.

3. The AR share system of claim 2 , wherein the server comprises:

a database; and

a plane detector configured to generate and store the auxiliary plane anchor in the database based on the predetermined number of specific frames, the cloud anchor pose, and the cloud anchor ID.

4. The AR share system of claim 3 , wherein the plane detector is further configured to infer plane information for each frame from the predetermined number of specific frames, and update the information with the cloud anchor with the cloud anchor pose.

5. The AR share system of claim 4 , wherein the plane detector is further configured to:

infer a plane based on the predetermined number of specific frames, the cloud anchor pose, and the cloud anchor ID; and

convert a frame to be suitable for a shared AR coordinate system to store the plane in a form of the auxiliary plane anchor.

Assignments (2)

Priority Claims (1)

Continuity (1)

References Cited (9)