Anti-shake device and method of video camera

A camera and anti-shake frame technology, which is applied in the field of camera anti-shake devices, can solve problems such as long exposure time and blurred images

Active Publication Date: 2015-05-06
ZHEJIANG UNIVIEW TECH CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In particular, the imaging device adopts a rolling shutter camera, and the exposure time of one frame of image is long, so the servo system needs to work continuously during the entire

Method used

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  • Anti-shake device and method of video camera

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Embodiment Construction

[0039] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments, and the following embodiments do not constitute a limitation of the present invention.

[0040] The general idea of ​​the present invention is to reduce the working time and stroke of the servo mechanism as much as possible, reduce random noise interference, and reduce the possibility of blurred video images on the basis of moving the imaging device while ensuring the continuity of video images.

[0041] In order to achieve the above purpose, this embodiment adopts a high frame rate imaging device, such as 50 frames / s (PAL system), 60 frames / s (NTSC), and configures it to work at a high frame rate for imaging. Since the naked eye sees a static picture exceeding 24 frames per second, it will be considered as a continuous dynamic video. Usually, the video surveillance system uses a standard number of frames (25 frames / s to...

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Abstract

The invention discloses an anti-shake device and method of a video camera. The anti-shake device comprises a position sensor, a controller, a servo mechanism, an imaging device and a frame extraction device, the position sensor measures linear acceleration and angular acceleration caused by shaking of the video camera and transmits the linear acceleration and the angular acceleration to the controller, the linear acceleration and the angular acceleration caused by shaking can be converted into mobile distance and angle by the controller, the mobile distance and angle are then compared with the maximum distance and the maximum angle of moving of the imaging device, image frames with the moving distance and angle caused by shaking and exceeding the maximum distance and the maximum angle of moving of the imaging device is abandoned in advance, and on the premise of no influence on subjective feeling of videos, the image frames exceeding the set frame number are abandoned actively according to preset strategies, the servo mechanism is controlled to stop actions within the framing period of abandoning the image frames in advance and the frame extraction device is controlled to abandon the image frames to be abandoned. By the anti-shake device and method, operation time and distance of the servo mechanism are reduced, and servo accuracy requirements are lowered.

Description

technical field [0001] The invention belongs to the technical field of imaging, and in particular relates to a camera anti-shake device and an anti-shake method. Background technique [0002] Video surveillance is an important part of the security system. Video surveillance is widely used in many occasions because of its intuition, accuracy, timeliness and rich information content. In recent years, with the rapid development of computer, network, image processing and transmission technology, the popularization trend of video surveillance has become more and more obvious. In the video surveillance system, the anti-shake of the front-end equipment such as the camera is a very important link. If the anti-shake function of the camera is not perfect, it will directly cause the video image to be blurred and affect the video surveillance effect. [0003] In terms of camera anti-shake, there are currently three commonly used methods, namely lens anti-shake, imaging device anti-shak...

Claims

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Application Information

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IPC IPC(8): H04N5/232
Inventor 吕海光吴辉
Owner ZHEJIANG UNIVIEW TECH CO LTD
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