Method and system for electronic image stabilization
An electronic image stabilization and sub-unit technology, which is applied in the field of image processing, can solve the problems of small image stabilization range, poor image stabilization reliability, and insufficient translation, etc., and achieve the effect of overcoming the small image stabilization range
Active Publication Date: 2019-09-10
BEIJING INSTITUTE OF TECHNOLOGYGY
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In the existing image stabilization methods represented by the above two schemes, the shaking of the image is regarded as a translation + rotation motion, and the translation vector and rotation vector of the image are calculated by solving the translation and rotation components between two adjacent frames of images. However, in the translation compensation process, the translation may not be in place, and the rotation compensation process may also occur in the wrong matching situation. The errors generated by the two-step compensation process will gradually accumulate, resulting in poor image stabilization reliability and low accuracy. defect
At the same time, both of the above two schemes perform image stabilization on the premise that the rotation angle between two adjacent frames is small, and the applicable image stabilization range is small, so it is only suitable for image stabilization between images with small rotation angle
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[0070] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0071] In traditional image stabilization methods, the default rotation center is often at the center of the image, and the shaking of the image is regarded as a translation + rotation motion, and the translation and rotation components between two adjacent frames of images are solved by using the attitude sensor or the information between the images. The image is compensated by the translation vector and the rotation vector, so the premise of the high accuracy...
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The invention discloses an electronic image stabilization method and system. The electronic image stabilization method first obtains the current frame and reference frame images; then obtains the matching feature point pairs in the current frame and the reference frame; obtains the current frame relative to the reference frame according to the matching feature point pairs. The rotation center and rotation angle of the frame; the current frame is compensated according to the rotation center and the rotation angle to obtain a stabilized current frame image. The electronic image stabilization method and system of the present invention compensates the current frame by calculating the rotation center and the rotation angle. In the compensation process, only one step of compensation is required for the rotation vector to obtain The current frame image after image stabilization has small cumulative error and high reliability, which greatly improves the image stabilization accuracy.
Description
technical field [0001] The present invention relates to the technical field of image processing, in particular to an electronic image stabilization method and system. Background technique [0002] Mobile video imaging equipment generally has different degrees of mechanical vibration. Affected by it, the video screen output by the back end will also have problems such as shaking and blurring, which is not only inconvenient for personnel to observe and identify, but also causes difficulties for subsequent computer processing. Video stabilization technology is a technology that re-modifies and arranges the dynamic image sequence acquired by a camera that shakes or moves randomly, so that it can be displayed more stably on the monitor. It eliminates or weakens the irregular translation, rotation, scaling and other distortions between image sequences, improves the quality of the picture, and makes the picture more suitable for processing operations such as target detection, trac...
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IPC IPC(8): H04N5/232
CPCH04N23/6811H04N23/682H04N23/683
Inventor 马越高阳彭怡凡
Owner BEIJING INSTITUTE OF TECHNOLOGYGY