FR
/
DE
2011

Digital holography

High resolution and advanced algorithms

CORIA and R&D Vision have been working together for over 15 years on different image processing and optical diagnostics techniques. Digital holography experiments using a 50 million pixel camera have been conducted. To qualify the sensor, trials were conducted on test charts (VIVE 3D and USAF 1951) and on streams of droplets

The initial results are very encouraging: 

- Resolution estimated at 90 cycles/mm on the USAF 1951 test chart 

- By using image dipoles on the stream, we can reach the 3 component parts of the local speed of a flow

As there is still room for improvement of the algorithms, this technique shows promise.