Automated coplanarity inspection of BGA solder balls by structured light.
Long WangChuantao HouJunxing ZhengPeng CaoJianru WangPublished in: Microelectron. J. (2023)
Keyphrases
- depth discontinuities
- structured light
- range data
- single image
- active stereo
- printed circuit boards
- space time
- light source
- straight line
- range sensors
- object surface
- camera projector
- surface discontinuities
- photometric stereo
- phase shifting
- error compensation
- high quality
- global illumination
- color coded
- stress response
- high resolution