Video image stabilization method and device

A video image stabilization and video technology, applied in the field of video processing, can solve problems such as poor image stabilization, large gyroscope deviation, and reduced user experience

Active Publication Date: 2019-12-20
SHANGHAI LINKCHIP SEMICON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the gyroscope will have a large deviation, making the stabilized video tilt at a fixed angle or rotate at a fixed angular velocity
In order to solve this problem, the gyroscope needs to be calibrated before video stabiliza

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  • Video image stabilization method and device
  • Video image stabilization method and device

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Embodiment Construction

[0046] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0047] In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways than those described here, so the present invention is not limited by the specific embodiments disclosed below.

[0048] As indicated in this application and claims, the terms "a", "an", "an" and / or "the" do not refer to the singular and may include the plural unless the context clearly indicates an exception. Generally speaking, the terms "comprising" and "comprising" only suggest the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also contain other st...

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Abstract

The invention provides a video image stabilization method, and the method comprises the steps: calculating the internal reference of a camera and the included angle between the camera and a gyroscopethrough the feature point matching pair of two adjacent frames of images in a test video, wherein the camera comprises a CMOS sensor; establishing a gyroscope cumulative pose list, wherein the gyroscope cumulative pose list comprises a gyroscope angular velocity acquisition moment and a cumulative pose corresponding to the gyroscope angular velocity acquisition moment; reading a to-be-processed frame image, wherein the frame image comprises a frame cache and the reading moment of each pixel row, and estimating the accumulated pose of the camera at the reading moment of each pixel row accordingto the included angle and the accumulated pose list of the gyroscope; correcting the accumulated pose of the camera at each pixel row reading moment according to the accumulated pose of the camera atthe first pixel row reading moment; and carrying out smoothing processing on the corrected accumulated pose of the camera.

Description

technical field [0001] The present invention relates to the field of video processing, in particular to a video image stabilization method and device. Background technique [0002] With the popularity of mobile phones and the continuous improvement of their performance, high-quality videos can be shot without professional camera equipment. However, in the process of shooting, unstable video is often output due to hand shaking, which will lead to poor viewing effect of the video, or be unfavorable for post-processing of the video. The purpose of video image stabilization technology is to eliminate the jitter component in the video and form a relatively stable video output. [0003] The basic methods of stabilizing video images can be divided into three categories: optical image stabilization, mechanical image stabilization and electronic image stabilization. Optical image stabilization requires sophisticated optical instruments, resulting in high cost, and is generally only...

Claims

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Application Information

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IPC IPC(8): H04N5/232
CPCH04N23/682H04N23/6811H04N23/6812H04N23/80
Inventor 洪明
Owner SHANGHAI LINKCHIP SEMICON TECH CO LTD
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