L2(ImForm)

L2(ImForm) - Introduction to Computer Vision CS ECE 181B...

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Introduction to Computer Vision CS / ECE 181B Thursday, April 13, 2004 ± Image Formation Course web site http://www.ece.ucsb.edu/~ manj /cs181b http://www.ece.ucsb.edu/~manj/ece181b • Not a substitute for attending the class – Note that not all lecture are in PPT. I will be using the board for most “math” related stuff.
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Prereqs and background knowledge • E.g., I assume you know: – Basic linear algebra – Basic probability – Basic calculus – Programming languages (C, C++) or MATLAB ± You had two sessions on MATLAB Your job • You are expected to: – Attend the lectures and discussion sessions ± You're responsible for everything that transpires in class and discussion session (not just what’s on the slides) – Ask questions in class – participate! – Do the homework assignments on time and with integrity ± “Honest effort” will get you credit – Give us feedback during the quarter
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First part of course: Image Formation • Geometry of image formation (Camera models and calibration) Where? • Radiometry of image formation How bright? Digital images • We’re interested in digital images, which may come from – An image originally recorded on film ± Digitized from negative or from print – Analog video camera ± Digitized by frame grabber – Digital still camera or video camera – Sonar, radar, ladar (laser radar) – Various kinds of spectral or multispectral sensors ± Infrared, X-ray, Landsat… • Normally, we’ll assume a digital camera (or digitized analog camera) to be our source, and most generally a video camera (spatial and temporal sampling)
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What is a Camera? • A camera has many components – Optics: lens, filters, prisms, mirrors, aperture – Imager: array of sensing elements (1D or 2D) – Scanning electronics – Signal processing – ADC: sampling, quantizing, encoding, compression ± May be done by external frame grabber (“digitizer”) • And many descriptive features – Imager type: CCD or CMOS – Imager number – SNR – Lens mount – Color or B/W – Analog or digital (output) – Frame rate – Manual/automatic controls – Shutter speeds – Size, weight –C o s t Camera output: A raster image
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This note was uploaded on 12/29/2011 for the course ECE 181b taught by Professor Staff during the Fall '08 term at UCSB.

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L2(ImForm) - Introduction to Computer Vision CS ECE 181B...

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