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Effect of speckle on APSCI method and Mueller Imaging
Debajyoti Upadhyay1, Micheal Richert, Eric Lacot
1ONERA, Thoretical and Applied Optics Department, Toulouse, France.
Optics Express
|March 4, 2011
Summary
Adapted Polarization State Contrast Imaging (APSCI) enhances polarimetric contrast, outperforming Classical Mueller Imaging (CMI). APSCI shows significant improvements, particularly for complex objects and backgrounds in speckle environments.
Area of Science:
- Optical Imaging
- Polarimetry
- Image Contrast Enhancement
Background:
- Classical Mueller Imaging (CMI) is a standard polarimetric technique.
- Polar decomposition is often used with CMI.
- Speckle noise can degrade image quality in polarimetric imaging.
Purpose of the Study:
- To compare the performance of Adapted Polarization State Contrast Imaging (APSCI) with Classical Mueller Imaging (CMI).
- To evaluate APSCI's effectiveness in maximizing polarimetric contrast.
- To assess performance under varying polarization states and speckle conditions.
Main Methods:
- Implementation and application of APSCI.
- Comparative analysis using Classical Mueller Imaging (CMI) with polar decomposition.
- Utilizing fully and partially polarized circular Gaussian speckle.
- Employing Bhattacharyya distance as a contrast metric.
Main Results:
- APSCI demonstrated a noticeable increase in Bhattacharyya distance compared to CMI.
- The contrast enhancement was particularly significant when objects and backgrounds shared multiple polarimetric properties.
- APSCI proved effective in challenging speckle conditions.
Conclusions:
- APSCI offers superior polarimetric contrast enhancement over CMI.
- The method is robust in the presence of complex polarimetric signatures and speckle.
- APSCI is a promising technique for advanced polarimetric imaging applications.
