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Method and equipment for drawing track box

A trajectory and equipment technology, applied in the field of trajectory frame drawing, can solve the problems of trajectory frame jitter, discontinuity, etc.

Active Publication Date: 2018-06-22
ZHEJIANG DAHUA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The embodiment of the present invention provides a method and device for drawing a trajectory frame, which is used to solve the technical problem that the drawn trajectory frame will jitter and be discontinuous

Method used

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  • Method and equipment for drawing track box
  • Method and equipment for drawing track box
  • Method and equipment for drawing track box

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Embodiment Construction

[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0056] The following describes the technical background of the embodiments of the present invention.

[0057] At present, in practical applications, the algorithm for parsing the trajectory coordinates is usually more complicated. If the trajectory coordinates are analyzed for each frame of the video, the time consumed may be longer, and the drawn trajectory frame cannot be compared with the The target moving object is kept synchronized. Therefore, in practical applications, it is usually not analyzed for each frame, but some frames included in the video are extracted for analysis. But in this way, the distance between the trajectory coordinates obtained by tw...

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Abstract

The invention discloses a method and equipment for drawing a track box, and is used for solving the technical problem that joggle and discontinuity of a track box that is drawn occur. The method includes analyzing a current coordinate of a first object in a video; determining a midpoint coordinate between the current coordinate and a coordinate of the first object which is analyzed last time; if the distance between the currently determined midpoint coordinate and the midpoint coordinate determined last time is not smaller than a preset distance threshold value, inserting M compensation coordinates between the currently determined midpoint coordinate and the midpoint coordinate determined last time, wherein M is a positive integer; and drawing a track box of the first object according to the M compensation coordinates and the currently determined midpoint coordinate.

Description

technical field [0001] The invention relates to the field of moving object detection, in particular to a method and device for drawing a trajectory frame. Background technique [0002] At present, when tracking a target moving object in a video, a track frame can be added to the target moving object, so that the visual effect of the target moving object can be improved and the tracking of the target moving object is more convenient. Among them, when adding a track frame for the target moving object, the current coordinates of the target moving object are parsed out, and the coordinates are provided to the program or process for drawing the track frame, and then the track is drawn by the program or process for drawing the track frame frame, and superimposed on the corresponding target moving object in the video in real time. For example, if 15 trajectory coordinates of the same target moving object are identified within 1 second, the trajectory frames corresponding to these ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T11/20
CPCG06T11/203G06T2207/30241
Inventor 徐泽卢成翔
Owner ZHEJIANG DAHUA TECH CO LTD
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