Image-based transparent object defect detection

A defect detection system of transparent three-dimensional (3D) objects, comprising:

• a transparent platform configured to support a transparent 3D object;
• a plurality of light sources disposed beneath the transparent platform to illuminate the transparent 3D object through the transparent platform;
• a plurality of cameras disposed about the transparent platform above a plane of the transparent platform and angled relative to the transparent platform, the plurality of cameras configured to generate a plurality of images of the transparent 3D object from a plurality of directions while the transparent 3D object is illuminated by one or more of the plurality of light sources, wherein each image of the plurality of images depicts a distinct region or view of the transparent 3D object;
• and
• a computing device configured to:
• process the plurality of images to determine whether the transparent 3D object comprises a defect;
• and
• output an indication of whether the transparent 3D object comprises a defect.