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A method and device for drawing a trajectory frame

A trajectory and equipment technology, applied in the field of trajectory frame drawing, can solve problems such as discontinuity and trajectory frame shaking

Active Publication Date: 2021-04-16
ZHEJIANG DAHUA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

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  • A method and device for drawing a trajectory frame
  • A method and device for drawing a trajectory frame
  • A method and device for drawing a trajectory frame

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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 trajectory frame, which is used to solve the technical problem that the drawn trajectory frame will shake and be discontinuous. The method includes: analyzing the current coordinates of the first object in the video; determining the midpoint coordinates between the current coordinates and the coordinates of the first object analyzed last time; If the distance between the determined midpoint coordinates is not less than the preset distance threshold, M compensation coordinates are inserted between the currently determined midpoint coordinates and the last determined midpoint coordinates, where M is a positive integer; according to The M compensation coordinates and the currently determined coordinates of the midpoint draw a trajectory frame of the first object.

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 Patents(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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