| Title |
A Study on the Measurement Algorithm for the Ball Height of BGA Device Using Stereo Vision |
| Authors |
Young-Soon Park ; Joon-Seek Kim |
| Keywords |
BGA ; inspection ; stereo vision |
| Abstract |
In this paper, We proposed he algorithm for defect extraction and a study of the stereo image modeling o inspect defect for the ball height of BGA(ball grid array) device using 2-dimensional images captured by the BGA device of using the high resolution CCD cameras. This paper propose the package/ball area extraction of BGA device part, the FOV(field of view) calibration part, the top point matching part, and ball height measurement method. Each BGA device propose extraction method by defect, Through the experiment, we verified the result. |