Title:
BOARD INSPECTION METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/010391
Kind Code:
A1
Abstract:
A board inspection method, comprising: acquiring an image to be inspected of an inspection region located on a conveyor belt (S101); matching the image to be inspected with a pre-configured template image to obtain a similarity level between the image to be inspected and the template image (S102); if the similarity level is less than a preset threshold, performing binarization on the image to be inspected to obtain a binary image (S103); extracting all contours of the binary image and computing an area of connecting regions enclosed by the contours, so as to obtain an area of a minimum bounding rectangle having a maximum area of the connecting regions (S104); and when a ratio between the area of the minimum bounding rectangle and an area of the binary image is greater than or equal to a preset ratio, determining the board has entered the inspection region (S105). A board inspection device is further provided. The inspection method and device can accurately determine whether a board has entered the inspection region or not.
Inventors:
LIN JIANMIN (CN)
Application Number:
PCT/CN2016/113235
Publication Date:
January 18, 2018
Filing Date:
December 29, 2016
Export Citation:
Assignee:
GUANGZHOU SHIYUAN ELECTRONICS CO LTD (CN)
International Classes:
G06K9/62; G06T7/00; G06T7/40
Foreign References:
| CN106228546A | 2016-12-14 | |||
| CN105352437A | 2016-02-24 | |||
| CN105139386A | 2015-12-09 | |||
| CN105303189A | 2016-02-03 | |||
| CN103150730A | 2013-06-12 | |||
| US20060204074A1 | 2006-09-14 |
Attorney, Agent or Firm:
SCIHEAD PATENT AGENT CO., LTD. (CN)
Download PDF:
Previous Patent: CHARGING DOCK FOR TOUCH SCREEN INPUT DEVICE
Next Patent: METHOD AND DEVICE FOR CONTROLLING WIPER
Next Patent: METHOD AND DEVICE FOR CONTROLLING WIPER