Method and apparatus for setting region of interest

Patent metadata

Field	Value
Publication number	US-2016110623-A1
Application number	US-201414587577-A
Country	US
Kind code	A1
Filing date	Dec 31, 2014
Priority date	Oct 20, 2014
Publication date	Apr 21, 2016
Grant date	—

Abstract

According to a first aspect of the present invention, a method for setting a region of interest may include: detecting a mark in an image frame photographed by a camera; and setting a region of interest using the detected mark.

First claim

What is claimed is:

1 . A method for setting a region of interest, the method comprising:
detecting a mark in an image frame photographed by a camera; and setting a region of interest using the detected mark.

2 . The method of claim 1 , further comprising:
performing labeling for each pixel present in the image frame depending on a kind of the detected mark to generate labeling information, wherein in the setting the region of interest, the region of interest is set using the labeling information.

3 . The method of claim 1 , wherein the detecting the mark comprises:
detecting a background in the image frame; performing a segmentation process to segment the detected background; acquiring segmentation information including a line and a boundary in the image frame which suffers from the segmentation process; and detecting the mark using the acquired segmentation information.

4 . The method of claim 1 , wherein the detecting the mark comprises:
detecting a moving object in the image frame; collecting a movement trajectory of the detected moving object; generating information on a region in which the collected movement trajectory is present based on the collected movement trajectory; and detecting the mark using the generated information.

5 . The method of claim 4 , wherein the detecting the mark further comprises:
detecting a background in the image frame; performing a segmentation process to segment the detected background; acquiring segmentation information including a line and a boundary in the image frame which suffers from the segmentation process; and detecting the mark using the acquired segmentation information and the generated information on the region in which the movement trajectory is present.

6 . The method of claim 4 , wherein the generating the information on the region in which the movement trajectory is present comprises correcting a difference in the number of pixels corresponding to physically the same region, the difference occurring due to a distance between the moving object and the camera.

7 . The method of claim 1 , wherein the mark is an object corresponding to a preset object among still objects which are present in the image frame.

8 . A method for setting a region of interest, the method comprising:
detecting a change in a view point of a camera; detecting a mark in an image frame photographed by the camera when the change in the view point is detected; and setting a region of interest using the detected mark.

9 . The method of claim 8 , wherein the detecting the change in the view point of the camera comprises:
acquiring first feature points which are feature points of a first image frame, among a plurality of image frames; acquiring second feature points which are feature points of a second image frame photographed after the first image frame is photographed, among the plurality of image frames; acquiring a motion vector using the acquired first feature points and the acquired second feature points; and detecting the change in the view point of the camera using the acquired motion vector.

10 . The method of claim 9 , wherein the first feature points and the second feature points are feature points of preset objects.

11 . The method of claim 8 , further comprising:
performing labeling for each pixel present in the image frame depending on a kind of the detected mark to generate labeling information, wherein in the setting of the region of interest, the region of interest is set using the labeling information.

12 . An apparatus for setting a region of interest, the apparatus comprising:
a mark detector configured to detect a mark in an image frame photographed by a camera; and a region of interest processor configured to set the region of interest using the detected mark.

13 . The apparatus of claim 12 , further comprising:
a labeling processor configured to perform labeling for each pixel present in the image frame depending on a kind of the detected mark to generate labeling information, wherein the region of interest processor uses the labeling information to set the region of interest.

14 . The apparatus of claim 12 , wherein the mark detector comprises:
a background detector configured to detect a background in the image frame; a segmentation processor configured to perform a segmentation process to segment the detected background; a segmentation information acquirer configured to acquire segmentation information including a line and a boundary in the image frame which suffers from the segmentation process; and a mark information generator configured to detect the mark using the acquired segmentation information.

15 . The apparatus of claim 12 , wherein the mark detector comprises:
a movement object detector configured to detect a moving object in the image frame; a trajectory determination processor configured to determine a movement trajectory of the detected moving object; a trajectory region generator configured to generate information on a region in which the determined movement trajectory is present based on the determined movement trajectory; and a mark information generator configured to detect the mark using the generated information.

Assignees

• Samsung Sds Co Ltd

Inventors

• Kim Jong Hang
• Lee Sang Hak
• Ha Seong Jong
• Kim Bo Youn
• Shin Young Min
• Ahn Yu Ri
• Kwon Yeon Hee
• Kang Sun Ah

Classifications

• G06V10/25

  Determination of region of interest [ROI] or a volume of interest [VOI] · CPC title

• G06T7/11 Primary

  Region-based segmentation · CPC title

• G06T7/194

  involving foreground-background segmentation · CPC title

• G06T2207/30256

  Lane; Road marking · CPC title

• G06T2207/10016

  Video; Image sequence · CPC title