I want to introduct something about Canon EOS 1DS PRO Digital Camera.
BRAND NEW IN BOX CANON EOS 1DS DIGITAL CAMERA BODY 11-megapixel (! ) sensor delivers 4,064 x 2,704-pixel images Full-frame (35mm) sensor permits true wide-angle shooting Full support for RAW file format in-the-box Highly configurable to suit individual shooting needs/styles. Manufacturer Overview Ask a photographer, be they professional or amateur, to name the first couple of camera manufacturers that they can think of, and chances are that one of those would be Canon. Ask the same photographer what the Canon name means to them, and many would suggest that they associated the name with innovation, the company having brought such technological advances as Eye-Controlled Focusing (Canon EOS 5,1992) and the USM ultrasonic motors used in the more recent Canon EF lenses, which are extremely quiet and very fast. In the digital realm, Canon's progress has been marked by cautious advances, but excellent products when they finally make a step. In the consumer realm, their digital
cameras offer
A frame grabber is an electronic device that captures individual, digital still frames from an analog video signal or a digital video stream. It is usually employed as a component of a computer vision system, in which video frames are captured in digital form and then displayed, stored or transmitted in raw or compressed digital form.
Early frame grabbers had only enough memory to acquire (i.e., "grab") and store a single digitized video frame, hence the name. Modern frame grabbers are typically able to store multiple frames and compress the frames in real time using algorithms such as JPEG. Technological demands in fields such as radar acquisition, manufacturing, and remote guidance have led to the development of frame grabbers with the ability to capture images at high frame rates and resolutions.
Contents
1 Circuitry
2 Applications
2.1 Manufacturing
2.2 Network Security
3 See also
4 References
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Circuitry
Analog frame grabbers, which accept and process analog video signals, include these circuits:
An input signal conditioner to buffer the analog video input signal and protect downstream circuitry.
A circuit to recover the horizontal and vertical synchronization pulses from the input signal.
An analog-to-digital converter.
An NTSC/SECAM/PAL decoder, a function that can also be implemented in software.
Digital frame grabbers, which accept and process digital video streams, include these circuits:
Physical interface to the digital video source, such as Camera Link, GigE Vision, LVDS or RS-422.
Circuitry common to both analog and digital frame grabbers:
Memory for storing the acquired image (i.e., a frame buffer).
A bus interface through which a processor can control the acquisition and access the data.
General purpose I/O for triggering image acquisition or controlling external equipment.
Applications
Manufacturing
"Pick and place" machines are often used to mount electronic components on circuit boards during the circuit board assembly process. Such machines use one or more cameras to monitor the robotics that places the components. Each camera is paired with a frame grabber that digitizes the analog video, thus converting the video to a form that can be processed by the machine software.
Network Security
Frame grabbers may be used in security applications. For example, when a potential breach of security is detected, a frame grabber captures an image or a sequence of images, and then the images are transmitted across a digital network where they are recorded and viewed by security personnel.
See also
Video capture
TV tuner card
References
Categories: Computing input devices | Computer graphics(and so on)
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