English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Speckle correlation based optical levers SC OptLev possess attractivecharacteristics suitable for sensing small changes in the angular orientationsof surfaces. In this study, we propose and demonstrate a spatial multiplexingtechnique for improving the dynamic range of SC OptLev. When the surface is inits initial position, a synthetic speckle intensity pattern, larger than thearea of the image sensor is created by transversely shifting the image sensorand recording different sections of a larger speckle pattern. Then, theacquired images are stitched together by a computer program into one relativelylarge synthetic speckle pattern. Following the calibration stage, the syntheticspeckle intensity pattern is used to sense changes in the surfaces angularorientation. The surface is monitored in realtime by recording part of thespeckle pattern which lies within the sensor area. Next, the recorded specklepattern is a cross correlated with the synthetic speckle pattern in thecomputer. The resulting shift of the correlation peak indicates the angularorientations of the reflective surface under test. This spatial multiplexingtechnique enables sensing changes in the angular orientation of the surfacebeyond the limit imposed by the physical size of the image sensor.

Improving Dynamic Range of Speckle Correlation based Optical Lever by spatial multiplexing