Electronic image stabilization method based on visual attention mechanism

A visual attention mechanism and electronic image stabilization technology, applied in color TV parts, TV system parts, TV and other directions, can solve the problem of boundary information affecting visual observation, difficult to deal with complex random camera shake and scanning motion at the same time, filtering Divergence etc.

Active Publication Date: 2013-12-04
西交思创智能科技研究院(西安)有限公司
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Problems solved by technology

[0008] For the motion estimation method and motion compensation method used in the aforementioned electronic image stabilization system, the speed of the algorithm depends on the extraction, matching and iterative operation of feature information, and there are local moving objects in complex motion scenes. Therefore, it is unavoidable that the feature points are selected on the foreground target, resulting in a decrease in the accuracy of global motion estimation; at the same time, it is difficult for the algorithm to de

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  • Electronic image stabilization method based on visual attention mechanism

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[0109] In order to make the above and other objects, features and advantages of the present invention more apparent, the following specifically cites the embodiments of the present invention, together with the accompanying drawings, for a detailed description as follows.

[0110] Based on the sensitivity analysis of the human visual system to motion attention, it can be known that the shaking of the background will weaken the visual system's attention to the foreground objects, and the inconsistent motion of the foreground objects will interfere with the detection of the global motion of the background. In order to eliminate or alleviate the instability of the video sequence and improve the observation effect of the video monitoring or tracking system, the basic idea of ​​the method of the present invention is:

[0111] First, in the motion estimation module, the background image is obtained by averaging the adjacent frames, and then the adjacent reference frame and the current...

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Abstract

An electronic image stabilization method based on a visual attention mechanism includes the following steps: conducting foreground moving area detection on a reference frame, marking foreground moving sub blocks, extracting overall situation remarkable characteristic points in the reference frame, matching characteristic point pairs, removing error-matched characteristic point pairs, acquiring moving parameters, conducting moving filtering, conducting rapid moving compensation, and rebuilding undefined boundary information to acquire a panoramic image. By means of the method, compensation parameters are acquired through extraction, matching, checking and moving parameter calculation of the overall situation remarkable characteristic point pairs and self-adaptation filtering smooth movement, vision stability and definition between video frames are improved, instability of video sequences is removed or reduced, and observation effects of a video monitoring or tracking system is improved.

Description

technical field [0001] The invention belongs to the technical field of digital image processing, in particular to an electronic image stabilization method based on a visual attention mechanism. Background technique [0002] Because the human visual system has the characteristic of persistence of vision, when the camera equipment shakes at a high frequency, the visual system is easy to capture the shaking of the picture in the image, so that the vision will be blurred and it is difficult to observe the target. The high-frequency jitter of the camera will cause the instability of the video sequence. The motion in the video sequence can be divided into target motion and camera motion, wherein the former is local motion and the latter is global motion. In order to facilitate observation, it is necessary to smooth and stabilize the motion in the video sequence, thus electronic image stabilization technology appears. Electronic image stabilization technology is a technology that ...

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Application Information

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IPC IPC(8): G06T7/20H04N5/14H04N7/26
Inventor 朱娟娟郭宝龙
Owner 西交思创智能科技研究院(西安)有限公司
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