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Goals of Computer Vision. To make useful decisions based on sensed images To construct 3D structure from 2D images. Related Areas of Computer Vision. Computer Graphics Image Processing Pattern Recognition Artificial Intelligence Virtual Reality. Applications of Computer Vision.

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Goals of Computer Vision


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    Presentation Transcript
    1. Goals of Computer Vision • To make useful decisions based on sensed images • To construct 3D structure from 2D images.

    2. Related Areas of Computer Vision • Computer Graphics • Image Processing • Pattern Recognition • Artificial Intelligence • Virtual Reality

    3. Applications of Computer Vision • Human Face Identification • Image Database Query • Inspecting Products • Examining the Inside of a Human Head (MRI) • Optic Character Recognition (OCR) • Analyze Satellite Image • Unmanned Autonomous Vehicle (UAV)

    4. Human Visual Perception

    5. Human eye

    6. How do we see an object? Light Eye Object • Luminance  Lightness  Rods • Chrominance  Color  Cones Human eye is more sensitive to luminance than to chrominance

    7. Cones & Rods( day & night )

    8. Machine Visual Perception

    9. Digital Image

    10. Sampling & Quantization

    11. Types of Images • Analog Image • Digital Image • Binary Image • Gray-scale Image • Color (Multispectral) Image

    12. Image Formats • Vector Image • Bitmap Image • RAW  no header • RLE (Run-Length Encoding) • PGM,PPM,PNM (Portable Gray Map) • GIF (Graphics Interchange Format)  no more than 256 colors • TIF (Tag Image File Format)  Scanner • EPS (Encapsulated Postscript)  Printer • JPEG (Joint Photographic Experts Group)  Compression ratio • MPEG (Motion Picture Experts Group)  Video

    13. Comparison of Image Formats