MONT 104S Perception and VR--Fall 2008

    Exam 2 Review

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    Topics for Exam 2:
    This sheet is intended to help you prepare for the second midterm in this course. The exam will cover all readings and lectures up through Friday, November 14, Lecture 22. It will focus on the topics since the first exam, however you are responsible for material learned in the first portion of the semester as well. You may bring one sheet of paper, 8.5" x 11", with notes on one side to the exam. Other than this one sheet, the exam will be closed book and closed note. The following list of topics that we have covered since the first midterm and may appear on the exam.


    1. Seeing Depth
      Monocular cues to depth
      Binocular stereo
      Retinal image disparity
      The correspondence problem
      Random dot stereograms
      Neural responses to stereo disparity

    2. Visual development
      Role of experience in visual development
      Critical period
      Methods for Testing infant vision
      Characteristics of newborn vision

    3. Vision and Art
      Depth cues used by artists
        Height in the visual field
        Interposition
        Relative size
        Texture gradients
        Shading
        Aerial perspective
        Linear perspective
      Size Constancy
      Spatial Summation
      Figure Ground
      Impossible figures--Techniques used to generate these.

    4. Illusions
      Ambiguities--List examples, What do they tell us about visual perception?
      Distortions
        Top down vs. Bottom up explanations.
        Orientation illusions
        Perspective distortions
        Size constancy and Emmert's law
        The moon illusion
      Paradoxes
      Fictions--illusory contours.

    5. Visual Attention
      Importance of visual attention
      Visual Search experiments
      Efficient and Inefficient searches
      Inattentional blindness
      Change blindness

    6. Virtual reality
      Current state of virtual reality systems
      Limitations of virtual reality systems
      More limited VR (e.g. games, CAD, flight simulators)
      Benefits of VR

    7. Computer graphics on the web
      Binary numbers
      Representation of images
      Resolution vs. size of image
      Bit Depth
      Color representation
        Indexed color
        RGB color (hexadecimal representation)
      Hexadecimal numbers
      File compression

    8. Graphics for Virtual Reality
      Synthetic camera model.
      Steps used in creating 3D models and rendering them
        Building 3D models
        Lighting and Shading
        Camera properties
        Transformation, Clipping, Projection and Rasterization.
      Translation, Rotation, Scaling
        Equations
      Hidden Surface Removal
        Painter's algorithm
        Z-Buffer algorithm
      Lighting and shading
        Basis of shading models
        Ray Tracing and Radiosity (basic idea)
      Texture Mapping
      Collision detection
      User Interfaces

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    Constance Royden--croyden@mathcs.holycross.edu
    MONT 104S--Perception and VR
    Date Created: February 7, 2008
    Last Modified: November 14, 2008
    Page Expires: November 14, 2009