A second before tsunami
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½ a second before tsunami PowerPoint PPT Presentation


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½ a second before tsunami . This picture was taken on the banks of Sumatra Island (the height of waves was of approx. 32 m = 105 ft). It was found saved in a digital camera, 1 ½ years after the disaster. Probably this is the last image he/ she saw before ending life on Earth! .

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½ a second before tsunami

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A second before tsunami

½ a second before tsunami

This picture was taken on the banks of Sumatra Island (the height of waves was of approx. 32 m = 105 ft). It was found saved in a digital camera, 1 ½ years after the disaster. Probably this is the last image he/ she saw before ending life on Earth!


Images are not always perfect

Images are NOT Always Perfect


A second before tsunami

Image Enhancement

Brightness control

Contrast enhancement

Noise reduction

Edge enhancement

Zooming


A second before tsunami

Image Enhancement


A second before tsunami

Image Enhancement

  • Spatial domain techniques

    • Point operations

    • Histogram equalization and matching

    • Applications of histogram-based enhancement

  • Frequency domain techniques

    • Unsharp masking

    • Homomorphic filtering


  • A second before tsunami

    Noise Reduction

    Noise

    geometric

    transformation

    photometric

    transformation


    A second before tsunami

    Basic

    Photo Retouching Techniques

    • Clone stamp tool

    • Rubber stamp tool

    • Smudge tool

    • Cropping tool

    • Levels Adjustment

    • Hue/Saturation

    • Correcting Color and Tone


    A second before tsunami

    Image Enhancement


    A second before tsunami

    Image Enhancement


    A second before tsunami

    Exercise


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