Speckle noise reduction in digital holography with spatial light modulator and nonlocal means algorithm-中国期刊网

摘要 Anintegratedmethodbasedonopticalanddigitalimageprocessingispresentedtosuppressspeckleindigitalholography.Aspatiallightmodulatorisadoptedtointroducerandomphasestotheilluminatingbeam.Multiplehologramsarereconstructedandsuperimposed,andtheintensityisaveragedtosmooththenoise.Theadaptivealgorithmbasedonthenonlocalmeansisdesignedtofurthersuppressthespeckle.Thepresentedmethodiscomparedwithothermethods.Theexperimentalresultsshowthatspecklereductionisimproved,andtheproposedmethodiseffectiveandfeasible.

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Speckle noise reduction in digital holography with spatial light modulator and nonlocal means algorithm

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Speckle noise reduction in digital holography with spatial light modulator and nonlocal means algorithm

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