Inspec keywords: image registration; automatic optical inspection; feature extraction; printed circuits; computer vision; electronic engineering computing

Other keywords: PCB defects detection; lower root-mean-square error; reference image; feature detector; first-registered image; PCB defect detection; computer vision system; robust feature descriptor; printed circuit board defects; automatic optical inspection system; accurate image registration method

Subjects: Electronic engineering computing; Computer vision and image processing techniques; Printed circuits; Optical, image and video signal processing