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CS252A, Fall 2010Computer Vision IImage Formation and CamerasComputer Vision ICSE 252ALecture 3CS252A, Fall 2010Computer Vision IAnnouncements•Assignment 0: “Getting Started with Matlab” is posted to web page, due Tuesday•Read Forsyth & Ponce chapters 1 & 2, Richard Szeliskip29-45.CS252A, Fall 2010Computer Vision IThe course•Part 1: The physics of imaging•Part 2: Early vision•Part 3: Reconstruction•Part 4: RecognitionCS252A, Fall 2010Computer Vision IImage Formation: Outline•Factors in producing images• Projection•Perspective/Orthographic Projection•Vanishing points•Projective Geometry•Rigid Transformation and SO(3)• Lenses• Sensors• Quantization/Resolution• Illumination•Reflectance and RadiometryCS252A, Fall 2010Computer Vision IEarliest Surviving Photograph• First photograph on record, “la table service” byNicephore Niepce in 1822.• Note: First photograph by Niepce was in 1816.CS252A, Fall 2010Computer Vision IHow Cameras Produce Images•Basic process:–photons hit a detector–the detector becomes charged–the charge is read out as brightness•Sensor types:–CCD (charge-coupled device)•high sensitivity•high power•cannot be individually addressed•blooming–CMOS•simple to fabricate (cheap)•lower sensitivity, lower power•can be individually addressed
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