Image Acquisition and Sampling

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Image Acquisition and Sampling
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Image acquisition by digital devices
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Image Sensors
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Image Acquisition Using Single Sensor
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Image Acquisition Using Sensor Strips
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CCD Image Sensor
Inventors George Smith and Willard Boyle Bell
Lab. 1969
First CCD sensor
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CCD Image Sensor (cont.)
How a CCD image sensor works.
CCD
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Layout of CCD sensor photosites
Standard CCD
Fuji Super CCD
For details of Fuji super CCD image sensor, check
http//photos8.msn.com/resources/targeted/en-us/ed
itorial/FujiFourthGen.html
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CMOS Image Sensor
1. CMOS image sensor with peripheral circuits.
2. Color filters for CMOS image sensor.
3. PCB of a digital camera.
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Foveon X3
A Dramatically Different DesignThe revolutionary
design of Foveon X3 direct image sensors features
three layers of pixel sensors. The layers are
embedded in silicon to take advantage of the fact
that red, green, and blue light penetrate silicon
to different depthsforming the world's first
direct image sensor.
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New Foveon X3 Image Sensor
For details, check http//www.foveon.com
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Optics of Lenses a real zoom lens
Lens groups
Aperture of lens
Optical path a zoom lens
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Aberration of lenses

• Geometric Aberration
• Barrel distortion
• Pin-cushion distortion
• Chromatic Aberration

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Image Sampling and Quantization
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Image Sampling