 | SingleWavelengthReconstructionUseCurrentHoloAsRef Method |
Define how to use the reference hologram. Call CopyHoloToRH(Int32) or SetHoloRHListSize(Int32) and Array.Copy before. (See example
code below)
Namespace: LynceeTec.Processing.Holography
Assembly: LynceeTec.InterfaceProcessing (in LynceeTec.InterfaceProcessing.dll) Version: 0.0.0.0
Syntaxpublic virtual void UseCurrentHoloAsRef( bool autoFilt, int autoFiltRadius, bool amplDiv, int nAvg )
Parameters
- autoFilt
- Type: SystemBoolean
If set to true, will use Fourier filtering on the reference hologram in a circle centered on the central frequency of radius autoFiltRadius. If set to false, the reference hologram will be filtered with the current Fourier filtering. - autoFiltRadius
- Type: SystemInt32
Radius of the circular Fourier filter centered around the central frequency, in [pix]. autoFilt must be set to true. - amplDiv
- Type: SystemBoolean
If set to true, enables the normalization for each pixel of the reconstructed intensity images with the intensity of each corresponding pixel of the reference hologram - nAvg
- Type: SystemInt32
Number of holograms which are averaged to produce the reference hologram. Must be equal or greater to one.
Implements
IReconstructionUseCurrentHoloAsRef(Boolean, Int32, Boolean, Int32)Examples
This example shows how to set a single hologram as reference hologram (no averaging)
//Resize the reference holograms list reconstruction.SetHoloRHListSize(1); //Copy the current hologram to the reference hologram memory reconstruction.CopyHoloToRH(0); //Configure how the reference hologram will be used reconstruction.UseCurrentHoloAsRef(useAutoFilterForRefHolo, autoFilterRadiusForRefHolo, useAmplitudeDivisionForRefHolo, numberOfAveragedImagesForRefHolo);
Examples
This example shows how to use the average of several holograms to produce the reference hologram
//Resize the reference holograms list reconstruction.SetHoloRHListSize(numberOfAveragedImagesForRefHolo); int holoBufferSize = dhmDevice.Camera.Stride * dhmDevice.Camera.Height; for (int i = 0; i<numberOfAveragedImagesForRefHolo; i++) { //Copies the holograms to the correct memory space //In this simplified example, the same hologram is used several time. Of course in a real life usage, a different hologram is acquired for each image! Array.Copy(hologramToUseAsRef.Data, 0, reconstruction.GetAvgRHBufHolo(i), 0, holoBufferSize); } //Special case for non-simultaneous sources, each source grabs an hologram independently, the holograms are saved one after the other in memory if (dhmDevice.CurrentConfiguration.NumLambda == 2 && !dhmDevice.CurrentConfiguration.SimultSources) { for (int i = 0; i<numberOfAveragedImagesForRefHolo; i++) { Array.Copy(hologramToUseAsRef.Data, 0, reconstruction.GetAvgRHBufHolo(i), holoBufferSize, holoBufferSize); } } //Configure how the reference hologram will be used reconstruction.UseCurrentHoloAsRef(useAutoFilterForRefHolo, autoFilterRadiusForRefHolo, useAmplitudeDivisionForRefHolo, numberOfAveragedImagesForRefHolo);
See Also