Interactive video segmentation method
A video segmentation and interactive technology, applied in image analysis, instrumentation, computing, etc., can solve the problems of inaccuracy of segmentation results, excessive interaction, inconsistent spatio-temporal continuity, etc., to improve spatio-temporal continuity and accuracy. the effect of increasing the continuity of space and time
Inactive Publication Date: 2018-01-16
HUAZHONG UNIV OF SCI & TECH +1
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[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides an interactive video segmentation method, thereby solving the problems of poor accuracy of segmentation results, inconsistency of time-space continuity and the amount of interaction existing in the existing interactive video segmentation technology. Technical issues such as too large
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[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0034] An interactive video segmentation method proposed by the present invention, firstly, the segmentation result of the previous frame is passed in, the contour line of the target in the previous frame is obtained, and then the target contour line is estimated to obtain the prediction of the target object in the current frame The initial contour, and on the basis of the estimated contour line...
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An interactive video segmentation method disclosed by the present invention comprises the steps of pre-estimating a target contour line to obtain a pre-estimated initial contour of a target object ina current frame, on the basis of the target pre-estimated contour line in the current frame, and by the distance mapping, obtaining the shortest distance between each pixel point and the target pre-estimated contour as the position attribute of the pixel point. On the basis of the three dimensional color attributes of each pixel in the current frame, the position attribute reflecting the space-time constraint is added, namely, the distance value between each pixel point and the pre-estimated target contour is expanded to the high-dimensional space. When a graph structure is established, each attribute of the high-dimensional space is firstly pre-divided into a plurality of histogram Bins, then an interframe smoothing item is superposed to a data item calculated by a globe probability modelas the data item of an energy function model, and finally a maxflow mincut algorithm is utilized to obtain the solution of the energy function model, thereby fusing the motion information of the target successfully, and increasing the space-time continuity of the video segmentation.
Description
technical field [0001] The invention belongs to the technical field of video segmentation in image processing and machine vision, and more specifically relates to an interactive video segmentation method. Background technique [0002] Video segmentation is a kind of binary labeling problem, which aims to segment the video or image sequence as a whole into meaningful objects through certain methods. Video segmentation plays an important role in many fields. For example, in object recognition, video segmentation can provide prior information for object recognition; in image coding, video segmentation can improve the efficiency of video compression coding. Generally, according to whether human interaction is added, video segmentation can be divided into non-interactive video segmentation and interactive video segmentation. Non-interactive video segmentation mainly uses the motion characteristics of video objects, such as non-interactive video segmentation methods based on opti...
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IPC IPC(8): G06T7/215G06T7/246G06T7/269
Inventor 韩守东杨迎春刘昱均陈阳胡卓
Owner HUAZHONG UNIV OF SCI & TECH