← EPO Patent Bulletin

METHOD FOR WARNING VEHICLE OF RISK OF LANE CHANGE AND ALARM DEVICE USING THE SAME

Publication EP3657382A1 Kind: A1 Mar 18, 2026

Applicants

Stradvision, Inc.

Inventors

KIM, Kye-Hyeon, KIM, Yongjoong, KIM, Insu, KIM, Hak-Kyoung, NAM, Woonhyun, BOO, SukHoon, SUNG, Myungchul, YEO, Donghun, RYU, Wooju, JANG, Taewoong, JEONG, Kyungjoong, JE, Hongmo, CHO, Hojin

Abstract

A method for warning a vehicle of a risk of lane change is provided. The method includes steps of: (a) an alarm device, if at least one rear image captured by a running vehicle is acquired, segmenting the rear image by using a learned convolutional neural network (CNN) to thereby obtain a segmentation image corresponding to the rear image; (b) the alarm device checking at least one free space ratio in at least one blind spot by referring to the segmentation image, wherein the free space ratio is determined as a ratio of a road area without an object in the blind spot to a whole area of the blind spot; and (c) the alarm device, if the free space ratio is less than or equal to at least one predetermined threshold value, warning a driver of the vehicle of the risk of lane change.

IPC Classifications

G06V 20/58 20220101AFI20260116BHEP G06V 10/44 20220101ALI20260116BHEP G06V 10/764 20220101ALI20260116BHEP G06V 10/82 20220101ALI20260116BHEP G06N 3/045 20230101ALI20260116BHEP G06N 3/0455 20230101ALI20260116BHEP G06N 3/0464 20230101ALI20260116BHEP G06T 7/11 20170101ALI20260116BHEP G08G 1/16 20060101ALI20260116BHEP G06N 3/08 20060101ALI20260116BHEP

Designated States

AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR