Image acquisition method capable of automatically adjusting the necessary illumination brightness

• Main Authors: CHUNG, CHENG-YING, TSENG, CHIEN-MING, YEH, KOUNG-MING, LIN, CHINUNG
• Format: Patent
• Language: Chinese; English
• Published: 01.05.2010
• Subjects: GYROSCOPIC INSTRUMENTS; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; TESTING

Disclosed is an image acquisition method capable of automatically adjusting the necessary illumination brightness, including a system setup step, a reference image acquisition step, a light source illumination model set up step, a light output intensity acquisition step, a light source brightness adjustment step, and a step of acquiring an image with predetermined brightness. Mainly, the method first extracts a DUT (device under test) image by illuminating the DUT placed on the bench with arbitrary output intensity of each light source and uses it as a reference image, then sets up the image brightness matrix for each individual region in the image, the matrix for each light source output intensity, as well as the transformation matrix relation. In this way, a DUT image having predetermined image brightness is to be extracted, and the required light output intensity of each light source can be calculated accordingly. Then, the necessary light output intensity of each light source is outputted to automatically