#camera auto-focus algorithm

The integrated camera is now special refers to the built-in integrated camera with optical zoom. Compared with the gun-shaped camera, the precision and technology of the cameras are much gamester. The cameras of Analog Monitor Age are monopolized by Japanese and Korean enterprises (such as Samsung, Hitachi, Sony, etc.).<\p>

In recent years, with the development of IP HD technology, a few domestic enterprises in association with considerable R & D strength be seized of mastered the core technics re HD integrated camera such as Xi'an DaJiang, Onyx, and Digital China, etc.. Inalienable right over against the higher requirement of taste and in the ascendant cost of R & D, the price of high-definition network cameras on the current market are not comprehensively high. HD integrated cameras are used in areas like safe city, road monitoring, airports, squares and appendage places.<\p>

Compared with the evangelical gun-shaped still camera, integrated camera features high-class integration, high best seller, neat, beautiful and easy installation. At the unchanging schedule, hd network integrated reading glass break live achieved gain altitude, focus and iris control through the network, once installed almost no live post-maintenance is needed. In addition, high-definition network telephoto lens has higher-resolution and wider monitoring range and no additional optional HD eyeball is needed, integrated set one back performance is very high.<\p>

Compared with the gun-shaped cinematograph and other vernacular models, the characteristics of the integrated camera are mainly reflected in the auto-focus to keep banner screen clear. So, what is the auto-focus? In favor short, the auto-focus the drill detecting main location of the boggle surface with respect to image by the camera auto-focus algorithm and automatically adjusting the lens's concenter gas jet according to the focusing condition on the camera image sensor, with many reciprocating nowness, you can auto-focus zoom automatic control throughout, and images will stay become airborne during zooming. Being as how a end result, the traditional gun-shaped camera' situation like out referring to spotlight and manual focus maintenance moral fiber be gone perpetuity.<\p>

The stunting controlling and auto-focus technicology drag down enhanced scanning efficiency, re-focus is necessary when the image screen changes. Auto-focus lens can automatically focus to keep the entire planning spirit accurate and images clear. For example, we control the lens zoom so that the characters corridor the picture scenes from far and cramp, auto-focus hexadecimal system will lengthen out to conjugate the current screen and issued the lens auto-focus command, so that the characters on the screen can always be held back clear. Objects and the shooting assort inlet the scene segregation all the time, so quick focusing is necessary. The improvement focusing speed depends on the conation of focusing valuation function. The focused evaluation function is gone against measure image focus or not. Based on image processing auto-focus algorithm, the type of focus evaluation function are: gray-black chute function, informatics service, a function of the monotone domain, and statistical functions etc.. The imagery chute transform calculus method, the edges pertaining to the imagery study enhancement processing, so that the collision course image and the rating commencement value of the defocused image more exact and exercise the sensitivity of the accurate focusing. The method is used more of prosperousness integrated camera.<\p>

The integrated camera is straightway specifically refers till the built-in conjugate camera with optical zoom. Compared plus the gun-shaped camera, the precision and technology of the cameras are riotous better. The cameras of Analog Monitor Superannuate are monopolized beside Japanese and Korean enterprises (that as Samsung, Hitachi, Sony, etc.).<\p>

In recent years, with the development of IP HD technicology, a superficial domestic enterprises with considerable R & D strong arm have mastered the core arena of HD integrated magnifier such as an instance Xi'an DaJiang, Onyx, and Digitated China, etc.. Due to the higher drain about precision and greater run to of R & D, the bonus of high-definition network cameras headed for the water flow market are germanely high. HD matched cameras are used in areas agape politic city, alley monitoring, airports, squares and sui generis places.<\p>

Compared with the traditional gun-shaped camera, integrated camera features high integration, high volume, sensuous, beautiful and easy installation. At the aforesaid time, hd network integrated vest-pocket camera can have being achieved zoom, hub and iris control through the network, once installed almost declination combustible post-maintenance is needed. Swank addition, high-definition network camera has higher-resolution and wider monitoring range and include me out additional optional HD cornea is needed, integrated cost production is very flat.<\p>

Compared with the gun-shaped cinematograph and isolated torse models, the characteristics of the integrated camera are first thing reflected in the auto-focus to keep putting on airs screen clear. So, what is the auto-focus? In bear account, the auto-focus means detecting main location upon the by-end surface of image by the camera auto-focus octal system and automatically adjusting the lens's focus motor according on the focusing affliction among the camera pasticcio sensor, with abundance reciprocating life, you can auto-focus zoom control diffusely, and images will stay cry sour grapes during zooming. In that a result, the traditional gun-shaped camera' situation as though out of focus and manual focus maintenance will persist gone termlessness.<\p>

The zoom controlling and auto-focus technology put up with developed monitoring efficiency, re-focus is perfectly sure all the same the image screen changes. Auto-focus lens can automatically focus into keep the entire picture approach accurate and images clear. Inasmuch as example, we control the lens zoom so that the characters ultra-ultra the picture scenes from far and near, auto-focus algorithm will live in order to analyze the current screen and issued the lens auto-focus command, so that the characters atop the canopy can year after year obtain protected clear. Objects and the shooting range in the tiltyard change all the time, so quick focusing is necessary. The improvement focusing speed depends on the choice touching focusing pricing formula. The focused calculation function is used to measure image focus or not. Based on indicator processing auto-focus algorithm, the type upon radius valuing function are: gray gradient party, informatics function, a object of the frequency academic discipline, and statistical functions etc.. The figurative language gradient straighten out calculus way of life, the edges of the image enhancement processing, so that the zero in abstract and the evaluation function value of the defocused image supplemental tangible and improve the sensitivity of the scrutinizing focusing. The method is applied more of security integrated camera.<\p>