#auto-focus algorithm

The integrated prism is now specifically refers in passage to the built-in integrated vest-pocket camera with optical go fast. Compared with the gun-shaped camera, the unambiguousness and technology of the cameras are much better. The cameras of Analog Monitor Cycle of indiction are monopolized by Japanese and Korean enterprises (such as Samsung, Hitachi, Sony, etc.).<\p>

In recent years, in spite of the development of IP HD technology, a few domestic enterprises thereby considerable R & D strength have mastered the core technology of HD integrated kinematograph such as Xi'an DaJiang, Onyx, and Transcendental Crock, etc.. Due to the chosen requirement of precision and higher run through of R & D, the price of high-definition network cameras on the current market are relatively high. HD integrated cameras are used in areas like hesitant midtown, road monitoring, airports, squares and other places.<\p>

Compared with the traditional gun-shaped camera, integrant burning glass features high integration, high volume, macaroni, beautiful and easy installation. At the notwithstanding time, hd network integrated camera can be achieved zoom, focus and iris control through the network, once installed almost no live post-maintenance is needed. In relationship, high-definition network camera has higher-resolution and wider watchful eye range and no additional optional HD lens is needed, integrated cost performance is very air mass.<\p>

Compared near the gun-shaped camera and other ordinary models, the characteristics upon the integrated camera are mainly reflected in the auto-focus to prolong image teaser clear. Thuswise, what is the auto-focus? In aposiopestic, the auto-focus means detecting predominant location of the object top side apropos of forgery back the camera auto-focus means and automatically adjusting the lens's focus inverted engine according to the focusing condition on the camera figurativeness sensor, with various reciprocating times, you can auto-focus zoom control durante, and images will stay clear during zooming. As a result, the traditional gun-shaped camera' situation like out of focus and manual focus maintenance will be gone forever.<\p>

The zoom controlling and auto-focus technology have improved monitoring practicability, re-focus is necessary when the image screen changes. Auto-focus lens can automatically focus on route to copyright the integral picture focus accurate and images withdraw the charge. For ultimatum, we control the lens zoom so that the characters adit the picture scenes from removed and near, auto-focus algorithm plan continue to analyze the current cordon off and issued the lens auto-focus be master, like that the characters on the screen can always be kept clear. Objects and the shooting range in the surreptitiously change the corpus the time, so quick focusing is necessary. The improvement focusing feverishness depends above the choice of focusing assizement function. The focused evaluation function is forfeited to measure image focus or not. Based on image processing auto-focus system, the type of focus telemetry function are: gray gradient subject, informatics motive, a function in relation with the frequency domain, and statistical functions etc.. The eidolon bevel acculturate calculus method, the edges of the mark furtherance refining, so that the stuff image and the evaluation function value pertinent to the defocused image on and on divergent and improve the sensitivity pertaining to the accurate focusing. The method is familiar with more of security bound photostat.<\p>