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Messier 51

by Alejandro Tombolini

Introduction

Image of Lex publicated in Image Processing Challenges. Main notes: CBR and DEB to correct background, Convolution to reduce noise pattern, sharpen with MMT. Date: May 2012.

Processing

StarAlignment with L as reference.

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DynamicBackgroundExtraction to L (Notice that I am working with out STF)

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HistogramEqualization to a Clone.

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CanonBandingReduction Scriptto see results in the clone.

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Delete the clone and CanonBandingReduction to image.

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Open B channel and DynamicBackgroundExtraction.

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B channel after DynamicBackgroundExtraction and the noise I was talking about.

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Open G channel and DynamicBackgroundExtraction.

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G channel after DynamicBackgroundExtraction.

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RGB Combination (ChannelCombination).

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Whit AberrationInspector Script generate a the preview for BackgroundNeutralization.

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ColorCalibration.

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RangeMask.

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Increasing protection of RangeMask with MorphologicalTransformation.

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Convolution before and after protecting stars with RangeMask.

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ScreenTransferFunctionHistogramTransformation

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LRGBCombination.

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SCNR to Green.

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Noise reduction. MultiscaleMedianTransform protecting the galaxy with RangeMask.

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HDRMT protecting galaxy core with RangeMask.

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New HDRMT protecting with new Range Mask.

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HistogramTransformation.

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Luminance Mask applying HistogramTransformation and ATrousWaveletTransform on inversed Luminance.

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ColorSaturation protecting background with Luminance Mask.

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CurvesTransformation protecting background with Luminance Mask.

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A little noise reduction in Chrominance with ACDNR.

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MultiscaleMediaTransform with RangeMask.

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HistogramTransformation protecting background with RangeMask.

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MorphologicalSelection with starmask.

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Still too noisy.

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HistogramTransformation to inverted Luminance.

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Noise reduction. Convolution.

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HistogramTransformation.

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CurvesTransformation.

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Resample.

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Final Image.

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Last Update: 22/03/2014 15:29 UT

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