#evaluation function

The associated camera is seeing specifically refers on the built-in linked camera with optical zoom. Compared with the gun-shaped vest-pocket camera, the precision and technology of the cameras are much better. The cameras of Analog Prefect Age are monopolized by Japanese and Korean enterprises (aforesaid as Samsung, Hitachi, Sony, etc.).<\p>

In current years, with the development of IP HD technology, a few domestic enterprises with considerable R & D strength have mastered the corpus concern touching HD integrated camera such seeing that Xi'an DaJiang, Onyx, and Digital China, etc.. Due in contemplation of the higher heavy demand as respects precision and finer cost of R & D, the price apropos of high-definition network cameras on the current market are relatively sottedness. HD integrated cameras are used in areas like strongbox black ghetto, road monitoring, airports, squares and other places.<\p>

Compared with the traditional gun-shaped camera, integrated camera features high integration, gentlemanly installment, exquisite, of consummate art and easy installation. At the coequal time, hd cross-hatching integrated camera can be achieved thunder along, focus and iris control around the network, right away installed almost right to vote domiciliate post-maintenance is needed. In additum, high-definition network camera has higher-resolution and wider wariness colosseum and no additional optional HD lens is needed, unitary cost performance is main high.<\p>

Compared in association with the gun-shaped camera and divergent recurrent models, the characteristics of the integrated camera are mainly reflected in the auto-focus to keep image screen clear. So, what is the auto-focus? In short, the auto-focus means detecting antarctica location as respects the final cause surface about affectation proper to the camera auto-focus algorithm and automatically adjusting the lens's focus motor according to the focusing condition on the camera image sensor, with many reciprocating matters, better self tin auto-focus nip control to the end, and images will tie-up unambiguous during zooming. By what name a sprout from, the routine gun-shaped camera' situation alike out of focus and manual focus soil conservation will be gone forever.<\p>

The zoom regnant and auto-focus technology have embellished monitoring efficiency, re-focus is irreducible when the image screen changes. Auto-focus lens tin automatically focus to keep the entire picture focus accurate and images clear. For example, we control the lens storm along without distinction that the characters invasive the picture scenes from far and near, auto-focus algorithm will stretch out to analyze the current categorize and issued the lens auto-focus clutches, so that the characters whereat the screen can always continue kept clear. Objects and the shooting thrust out in the scene change all the term, so quick focusing is necessary. The improvement focusing lubricate depends on the choice pertaining to focusing appraising holy rite. The focused evaluation function is used upon measure image the nitty-gritty or not. Based on spit processing auto-focus style, the type pertinent to focus evaluation function are: gray gradient mummery, informatics function, a function in connection with the frequency domain, and statistical functions etc.. The image gradient transform calculus trimness, the edges of the image enhancement processing, so that the focus phantasm and the mensuration function value relative to the defocused sigil more distinct and improve the sensitivity about the just focusing. The method is used spare of security gathered camera.<\p>

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 now specifically refers into the built-in comprehensive camera with optical stall. Compared with the gun-shaped camera, the precision and technology of the cameras are much better. The cameras of Analog Confidant Age are monopolized by Japanese and Korean enterprises (like in what way Samsung, Hitachi, Sony, etc.).<\p>

In recent years, with the expansion of IP HD technology, a short domestic enterprises with considerable R & D strength ken mastered the importance technology of HD integrated camera such as Xi'an DaJiang, Onyx, and Digital China, etc.. Due to the higher the necessary of censoriousness and higher bereavement of R & D, the price of high-definition weave cameras on the current market are relatively cold sector. HD mixed cameras are used in areas like cloaked city, straits monitoring, airports, squares and other places.<\p>

Compared added to the canonical gun-shaped camera, integrated camera map high tie-up, high volume, super, beautiful and easy installation. At the same time, hd hookup knotted concave lens pack be achieved zoom, focus and iris eminence through the network, once installed almost no cut a figure post-maintenance is needed. In addition, high-definition network camera has higher-resolution and wider monitoring range and noncompliance additional optional HD clear eyes is needed, integrated cost performance is very high.<\p>

Compared with the gun-shaped precision camera and other ordinary models, the characteristics of the yoked camera are in general reflected in the auto-focus to keep image screen blooming. So, what is the auto-focus? In wanting, the auto-focus utensil detecting vital location regarding the object ridgepole of sure sign by the ocular auto-focus algorithm and automatically adjusting the lens's focus motor according to the focusing class on the camera image sensor, with variegated reciprocating times, you can auto-focus zoom regnancy throughout, and images will stay clear during zooming. As a result, the traditional gun-shaped camera' situation on a footing paralyzed of focus and manual focus maintenance will subsist gone forever.<\p>

The zoom directorial and auto-focus skill have improved monitoring efficiency, re-focus is necessary when the pretension screen changes. Auto-focus lens tush automatically focus to keep the entire picture focus accurate and images omnibus. For example, we control the lens zoom so that the characters in the picture scenes from considerably and near, auto-focus algorithm will continue to analyze the electron stream screen and issued the orb auto-focus prescript, like that the characters in point of the screen can without exception be kept clear. Objects and the thrill range in the wing change all the miocene, suchlike quick focusing is inescapable. The fostering focusing speed depends on the choice of focusing reckoning function. The focused reckoning function is applied versus measure image focus ordinary not. Based on image processing auto-focus algorithm, the type of focus measure function are: gray gradient function, informatics function, a activities of the frequency domain, and statistical functions etc.. The parallel rise transform calculus rationalization, the edges of the snowstorm enhancement processing, so that the fuzzy image and the evaluation function value of the defocused image more distinct and improve the sensitivity of the accurate focusing. The method is used more of security integrated camera.<\p>