Video image-stabilization method, device and camera terminal

Abstract

The invention discloses a video image-stabilization method, a device and a terminal. The video image-stabilization method is used for the camera terminal; the camera terminal comprises a gyroscope; the video image-stabilization method comprises the following steps; acquiring gyroscope data of the gyroscope while shooting an image, wherein the gyroscope data is corresponding to each frame image; when the gyroscope data shows that the camera terminal is in shaking, extracting feature points of the current frame image; computing an adjacent transformation matrix by using the gyroscope data corresponding to the current frame image and the gyroscope data corresponding to the former frame image or using a feature point coordinate of the current frame image and the feature point coordinate of the former frame image, wherein the former frame image is the previous frame image of the current frame image; and transforming the current frame image according to the adjacent transformation matrix. The accuracy of the video image-stabilization is improved by using the technical scheme disclosed by the invention.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a video image stabilization method, device and camera terminal. Background technique [0002] In today's society, video files can be seen and shot everywhere. In the process of taking a picture or shooting a video, due to the shaking of the hand of the photographer, the camera will generate a certain random shake. As a result, irregular movement occurs between each frame of the video, resulting in distortion of the video image and poor picture quality. For intelligent video analysis algorithms, the jitter of the video picture will cause large deviations in the analysis results. Therefore, it is necessary to adopt certain techniques to "maintain stability" of video files. Video image stabilization (also known as electronic image stabilization) is a technology that re-modifies and arranges the dynamic image sequence acquired by a camera that shakes or moves rando...

AI Technical Summary

Problems solved by technology

[0004] However, the anti-shake method based on image content has a strong dependence on the image scene. When the scene is over-exposed, under-exposed, content is single, and moving objects occupy a large proportion of the scene, it will affect the calculation of its transformation matrix, and then Affects the performance of image stabilization; the gyroscope-based anti-shake method requires the precise matching of gyroscope data and video frame data, which has high requirements for gyroscope stability and system performance

Once the gyroscope data is wrong, it will lead to wrong image stabilization results

Images