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Intelligent terminal and video image stabilizing method and device

A technology of video image stabilization and video compression, applied in the field of electronic information, to achieve the effect of reducing computing burden and reducing adverse effects

Active Publication Date: 2016-02-03
BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0012] The technical problem solved by the present invention is: in the process of video image stabilization, how to reduce the adverse effect on the image stabilization effect caused by the change of time stamp offset between the motion sensor and the image sensor

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  • Intelligent terminal and video image stabilizing method and device
  • Intelligent terminal and video image stabilizing method and device
  • Intelligent terminal and video image stabilizing method and device

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Embodiment Construction

[0067] As analyzed in the background technology section, since the motion path of the video recording device obtained by the motion sensor is instantaneous, it takes a certain amount of time for the image sensor to sample the image frame to estimate the motion between frames. Therefore, the motion sensor and the image sensor There will be a certain time stamp offset.

[0068] The time stamp offset is an important parameter when the video image stabilization system performs jitter estimation and jitter compensation. The prior art assumes that the time stamp offset is constant during the entire recording process, but the automatic exposure function during recording or other system design factors sometimes cause the time stamp offset to change.

[0069] In view of the above-mentioned shortcomings of the prior art, the inventor found after research that in the process of video image stabilization, if a non-optimal timestamp offset is used for jitter estimation and jitter compensation, ...

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Abstract

The invention provides an intelligent terminal and a video image stabilizing method and device. The method comprises the following steps: in a video compression process, obtaining residuals of motion estimation of macro blocks in an image frame; counting the residuals of the macro blocks in the image frame to obtain the residual of the image frame; adjusting a timestamp offset between a motion sensor and an image sensor according to the residual of the image frame; and carrying out subsequent timestamp correspondence, jitter estimation and jitter compensation on the image frame with the adjusted timestamp offset. According to the video image stabilizing method provided by the invention, the timestamp offset between the motion sensor and the image sensor is adjusted according to the residuals of the motion estimation in the video compression process, so that when the timestamp offset changes due to automatic exposure and other factors, the system can dynamically adjust the timestamp offset used in the timestamp correspondence, the jitter estimation and the jitter compensation to reduce the adverse effect on the image stabilizing effect resulting from the change of the timestamp offset.

Description

Technical field [0001] The present invention relates to the field of electronic information technology, in particular to an intelligent terminal and a video stabilization method and device thereof. Background technique [0002] During the recording process of a video recording device, the jitter of the device itself will cause the original video collected by it to have corresponding jitter. Especially for some portable handheld mobile terminals with video recording function, the jitter amplitude is relatively large when taking pictures, so the collected original video is often accompanied by obvious picture jitter. [0003] In recent years, with the maturity of motion sensors, video recording equipment can sense the jitter of the equipment with the help of motion sensors, so as to stabilize and stabilize video images. [0004] Video stabilization solutions based on motion sensors can be divided into optical image stabilization solutions and digital image stabilization solutions. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232H04N5/14
Inventor 蔡进王浩孟春芝
Owner BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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