Autofocus is widely used in the optical image system. With the development of electronic technology and digital signal processing, autofocus based on image signal processing is used in the camera system. The method of autofocus is divided into analogy autofocus and digital autofocus. Analogy autofocus is analyzing the high frequency component reflecting the definition of
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The integrated zoom camera,which is integrated in lens,CCD chip,video processing circuits,control communication circuits,power,chassis,and so on as a whole.This type of cameras can focus,zoom, auto-focus, auto-zoom and auto-iris.Compared with traditional cameras,the integrated zoom cameras are a compact, the special design of appearance, the power, video, control signals are directly jack, also they have more simple connection
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Due to the complexity of imaging targets and conditions, there are still many shortcomings in auto-focusing techniques used in digital imaging systems at present. Many problems, such as how to select focus measures and focus windows, how to perform feedback control, how to improve the auto-focusing velocity, and how to reduce manufacture cost etc., are
(Read More…)
In recent years, zoom cameras which are the core equipment of video monitoring systems can be seen everywhere. Zoom cameras are small with good flexibility and easy to install. So this paper researches zoom cameras and designs the control system of it. Firstly, this paper researches the key technologies such as the auto-focus technolgy, and
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Screw anchors assembled on Light-Rail of Chongqing are the key research objects of this paper. Based on the characteristic of the structure, screw anchors which link rail girder and frusta is the key force component. Their health are very important. How ever, some factor such as material defects, metal corrosion, long time service and complex
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Screw anchors assembled on Light-Rail of Chongqing are the key research objects of this paper. Based on the characteristic of the structure, screw anchors which link rail girder and frusta is the key force component. Their health are very important. How ever, some factor such as material defects, metal corrosion, long time service and complex
(Read More…)
The integrated zoom camera,which is integrated in lens,CCD chip,video processing circuits,control communication circuits,power,chassis,and so on as a whole.This type of cameras can focus,zoom, auto-focus, auto-zoom and auto-iris.Compared with traditional cameras,the integrated zoom cameras are a compact, the special design of appearance, the power, video, control signals are directly jack, also they have more simple connection
(Read More…)
Due to the complexity of imaging targets and conditions, there are still many shortcomings in auto-focusing techniques used in digital imaging systems at present. Many problems, such as how to select focus measures and focus windows, how to perform feedback control, how to improve the auto-focusing velocity, and how to reduce manufacture cost etc., are
(Read More…)
Autofocus is widely used in the optical image system. With the development of electronic technology and digital signal processing, autofocus based on image signal processing is used in the camera system. The method of autofocus is divided into analogy autofocus and digital autofocus. Analogy autofocus is analyzing the high frequency component reflecting the definition of
(Read More…)
In recent years, zoom cameras which are the core equipment of video monitoring systems can be seen everywhere. Zoom cameras are small with good flexibility and easy to install. So this paper researches zoom cameras and designs the control system of it. Firstly, this paper researches the key technologies such as the auto-focus technolgy, and
(Read More…)
