directed study in image processing hurricane satellite image analysis using 2x2 and 3x3 wavelet...
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![Page 1: Directed Study in Image Processing Hurricane satellite image analysis using 2x2 and 3x3 wavelet transforms Dr. J. Derado Pedro J. Soto](https://reader036.vdocument.in/reader036/viewer/2022062500/5697bff41a28abf838cbd194/html5/thumbnails/1.jpg)
Directed Study in Image Processing
Hurricane satellite image analysis using 2x2 and 3x3 wavelet transforms
Dr. J. DeradoPedro J. Soto
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It all starts with Lena and Haar We began the course with the Haar Transform and the picture of Lena.
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2nd Level Haar Transform
Lena, 2nd Level Haar Transform
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3rd Level Haar Transform
Lena, 3rd Level Haar Transform
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Haar Transform Histograms We look at the histogram of the resulting images and we adjust the
images in order to compress the range of brightness and exaggerate the details.
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Using thresholds We then looked at the Haar transform when using a
threshold. If the coefficient exceeds the threshold, we mark the pixel in pure white.
Lena, Binary HaarThreshold 1.0
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Using thresholds
Lena, Binary HaarThreshold 10.0
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Using thresholds
Lena, Binary HaarThreshold 25.0
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Absolute value Haar transform (no offset) We look at Haar transforms using the absolute value.
We then proceed to exaggerate the results by multiplying the coefficients by a scalar value.
Lena, Absolute HaarScalar Multiplier 1.0
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Absolute value Haar transform (no offset)
Lena, Absolute HaarScalar Multiplier 2.5
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Absolute value Haar transform (no offset)
Lena, Absolute HaarScalar Multiplier 10.0
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Daubechies Transform For the following images, we have adjusted the
quadrants to show the highlights and details.
Lena, Daubechies
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Daubechies Transform
Lena, DaubechiesExaggerated
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3x3 Transform For the following images, we have adjusted the
quadrants to show the highlights and details.
Lena, 3x3 Transform
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3x3 Transform
Lena, 3x3 TransformExaggerated
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Hurricane Images Now we proceed to use the wavelet transform tools
that we have developed to process hurricane satellite pictures.
Hurricane Ivan, MODISHaar Transform, Scalar Multiplier 5.0
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Hurricane Images
Hurricane Ivan, MODISHaar Transform, Binary Threshold 25.0
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Hurricane Images
Hurricane Ivan, MODISDaubchies Transform, Exaggerated
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Hurricane Images
Hurricane Ivan, MODIS3x3 Transform, Exaggerated
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Hurricane Images
Hurricane Frances, MODISHaar Transform, Scalar multiplier5.0
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Hurricane Images
Hurricane Frances, MODISHaar Transform, Binary Threshold 25.0
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Hurricane Images
Hurricane Frances, MODISDaubechie, Exaggerated
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Hurricane Images
Hurricane Frances, MODIS3x3 Transform, Exaggerated
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Hurricane ImagesHurricane Isabel, MODISHaar TransformScalar Multiplier 5.0
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Hurricane ImagesHurricane Isabel, MODISHaar Binary, Threshold 25.0
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Hurricane ImagesHurricane Isabel, MODISDaubechies TransformExaggerated
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Hurricane ImagesHurricane Isabel, MODISDaubchies TransformExaggerated
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Hurricane ImagesHurricane Charley, MODISHaar TransformScalar Multiplier 5.0
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Hurricane ImagesHurricane Charley, MODISHaar TransformBinary, Threshold 25.0
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Hurricane ImagesHurricane Charley, MODISDaubechies TransformExaggerated
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Hurricane ImagesHurricane Charley, MODIS3x3 TransformExaggerated
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Hurricane ImagesHurricane Alex, MODISHaar TransformScalar Multiplier 5.0
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Hurricane ImagesHurricane Alex, MODISHaar BinaryThreshold 25.0
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Hurricane ImagesHurricane Alex, MODISDaubechies TransformExaggerated
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Hurricane ImagesHurricane Alex, MODIS3x3 TransformExaggerated