Focus stack

Microscopically accurate volumetric digital photography without dedicated hardware.

This algorithm uses a stack of images taken at different focal lengths to infer the depth. Therefore, it can be used for any camera with optically-adjustable focus.

Examples:

2 SMD components captured with a TAGARNO TREND digital microscope

The generated depth map showing the accuracy of the algorithm

3D models of the 2 components

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Keyboard captured on a Sony DSLR camera

Image from the stack

The generated pointcloud

To learn more about the approach, check how-to.pdf