Local image enhancement-based object tracking method

A target tracking and partial image technology, applied in image enhancement, image analysis, image data processing, etc., can solve the problems of low robustness, slow tracking speed, complex algorithm, etc., achieve good tracking effect and improve processing speed Effect

CN105913455AInactive Publication Date: 2016-08-31NANJING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-08-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a local image enhancement-based object tracking method which comprises the following steps: in step one, a first frame is obtained; in step two, whether smog exists in the first frame is determined; if yes, an image is subjected to enhancing and restoring operation via a multi-scale Retinex algorithm having a color restoration function, then step four is executed; if no, step four is directly executed; in step four, whether to initialize an object is determined; if yes, the object is initialized and step five is executed; if no, step five is directly executed; in step five, a mean value shift particle filtering method is adopted to tracking the object; in step six, a next frame of image is obtained; in step seven, an area where the object appears is anticipated via Kalman filtering; in step eight, whether to concluding tracking operation is determined; if yes, the tracking operation is concluded; if no, step two is executed for continuing tracking the object. Via the local image enhancement-based object tracking method, an object area image can be enhanced when smog exists in the image or brightness in the image is not enough, and accurate tracking and high tracking speed can be realized.
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Description

technical field

[0001] The invention relates to the technical field of target detection and tracking, in particular to a target tracking method based on local image enhancement. Background technique

[0002] Object detection and tracking technology is one of the hotspots in computer vision research. The main research is how to detect the moving target from the background of the image, and realize accurate target positioning and tracking in the moving scene. Target detection and tracking is a comprehensive technology including object kinematics, artificial intelligence, mathematical analysis, automatic control, etc. Target detection and tracking technology has a very broad application prospect in many civilian and military fields, such as intelligent video surveillance systems, vehicle assisted driving and gesture understanding.

[0003] In many harsh application environments, it may be difficult for the camera to continuously capture good-quality images, resulting in diffi...

Examples

Embodiment

[0057] A target tracking method based on local image enhancement, comprising the following steps:

[0058] Step 1, obtain the first frame, and obtain an image including the tracking target;

[0059] The camera is installed on the gimbal, and the gimbal equipped with the camera controls the rotation of the camera around the azimuth axis (z direction) and the pitch axis (x direction), such as figure 2 As shown, the azimuth and pitch motion of the pan / tilt can make the camera track a moving target in three-dimensional space; in this embodiment, the ball on the image is selected as the experimental target template for target matching, and its pixel size is 62×58;

[0060] Step 2, determine whether there is haze, if so, use the multi-scale Retinex algorithm with color restoration to enhance and restore the image, and then perform step 4; if not, perform step 3;

[0061] Step 3, continue to judge whether there is a weak light situation, if so, use the image histogram equalization ...