Method for detecting a bridge connecting failure,申请号US201113298684-传众专利搜索

Method for detecting a bridge connecting failure

申请公布号：US8837809(B2)

申请号：US201113298684

申请日期：2011.11.17

申请公布日期：2014.09.16

申请人：

Koh Young Technology Inc.

发明人：Jeong Joong-Ki

分类号：G06T7/00;G01B11/25;G01B11/27

主分类号：G06T7/00

代理机构：

Kile Park Reed & Houtteman PLLC

代理人：Kile Park Reed & Houtteman PLLC

地址：Seoul KR

摘要：A method for detecting a bridge connecting failure to detect a bridge shorting terminals of a component includes acquiring a 2D image and height-based information through lights irradiated on a board, acquiring rotation information of the component using at least one of the 2D image and the height-based information, establishing an inspection region for detection of the bridge connecting failure using the rotation information, extracting a first bridge region within the inspection region using the 2D image, extracting a second bridge region within the inspection region using the height-based information, and judging whether the bridge connecting failure of the component occurs by using at least one of the first and second bridge regions. Thus, the method may inspect more precisely the bridge connecting failure through the first bridge region extracted from the 2D image and the second bridge region extracted from the height-based information.

主权项：1. A method for detecting a bridge connecting failure that shorts terminals of a component, comprising: acquiring a 2D image and a height-based information through a plurality of lights which are irradiated on a board, on which the component is mounted, and are reflected from the board; acquiring rotation information of the component using at least one of the 2D image and the height-based information; establishing an inspection region for detection of the bridge connecting failure on the component on the basis of the rotation information; comparing the grey level of each pixel of the 2D image with a threshold level to detect a first group of bridge connecting failure position within the inspection region, wherein each of the first group of bridge connection failure position has a grey level exceeding a threshold level; detecting a second group of bridge connecting failure position within the inspection region using the height-based information; and judging a position where the first group of bridge connecting failure position overlaps the second group of bridge connecting failure position as a final bridge connecting failure position.