Electronic image stabilizing method for digital videos

Abstract

The invention relates to an electronic image stabilizing method for digital videos, belonging to the technical field of digital image processing. The method comprises the following steps of: firstly, extracting characteristic points in two adjacent images in a video sequence by utilizing an SUSAN corner detection operator, matching the characteristic points by utilizing a relevant matching method and rejecting false matching point pairs; then selecting three pairs from the correct matching point pairs and solving for an affine transformation parameter between two images by utilizing a corresponding coordinate relation of the matching point pairs on a two-dimensional image; and finally, carrying out an affine inverse transformation on a next image according to an affine formula to obtain an image registered with a previous image in space so as to realize the electronic image stabilization of the digital videos. The electronic image stabilizing method of the digital videos can automatically eliminate jitters of the video images in real time, wherein the jitters comprise translations and rotating movements among images.

Description

technical field [0001] The invention relates to the technical field of digital image processing, in particular to a digital video electronic image stabilization method, in particular to a method for automatically eliminating the violent shaking of video images caused by camera shake. Background technique [0002] With the advent of the digital age and the advent of a large number of digital products, digital cameras have been widely used in various fields of military industry, aerospace and people's daily life. When a digital camera is used, the video is shaken and rotated due to artificial shaking or vibration of the carrier device, which makes the observer prone to visual fatigue. [0003] At present, most of the common image stabilization devices are based on mechanical image stabilization, which is realized by reducing or canceling the mechanical jitter of the camera-mounted carrier device. This kind of device has high cost and poor accuracy, and can no longer meet the n...

AI Technical Summary

Problems solved by technology

When the digital camera is in use, human shaking or vibration of the carrier device will cause the shaking and rotation of the shooting video, which makes the observers prone to visual fatigue

[0003] At present, most of the more common image stabilization devices are based on mechanical image stabilization, which is realized by reducing or canceling the mechanical vibration of the camera installation carrier equipment. This kind of equipment is expensive and has poor precision, which can no longer meet the demand.

However, most of the common electronic image stabilization devices can only eliminate the translational jitter of the video but not the rotation of the video, and the video output also has a large delay, which cannot meet the real-time requirements.

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