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Method for establishing photographic measurement video space index

A technology of photogrammetry and spatial indexing, applied in radio wave measurement systems, using re-radiation, road network navigators, etc., can solve the problems of indexing, video browsing and playback, video browsing and playback, and video space establishment, etc., to achieve The effect of simple method

Active Publication Date: 2009-09-02
北京铁木牛智能机器科技有限公司
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AI Technical Summary

Problems solved by technology

The multimedia browsing of traditional two-dimensional maps is just a hyperlink, that is, video files or video streams can only be played at fixed points in a certain area of ​​the map. This is because: the existing video index only has a time index, that is, the existing The index of the video is the time index within the length of the video, and the spatial (such as geodetic coordinates, etc.) index of the video cannot be established
Therefore, the prior art cannot realize video browsing and playing at any point in a certain area of ​​the map (such as a road), and video browsing and playing between one point and another point in a certain area of ​​​​the map (such as a road) cannot be realized.

Method used

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  • Method for establishing photographic measurement video space index
  • Method for establishing photographic measurement video space index
  • Method for establishing photographic measurement video space index

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Embodiment Construction

[0022] Such as figure 1 The software flowchart of the shown method embodiment of the present invention, its method is the method for setting up the geodetic coordinate index of every second of video, its step is:

[0023] (1) Step of inputting photogrammetry data.

[0024] The photogrammetry data includes: the GPS geodetic coordinates (such as image 3 shown), the video taken by the photographic equipment carried by the vehicle (such as figure 2 ), the start time of the video (February 2, 2007 10:35:42), the end time of the video (February 2, 2007 11:24:14) (such as image 3 shown), the length of the video (48 minutes and 32 seconds).

[0025] (2) Several video time points are set within the video duration; as figure 2 As shown, the time between adjacent video time points is equal, and according to the setting, the time between adjacent video time points is 1 second.

[0026] (3) Read the video time points in the video time length in turn, add the video time of the vide...

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Abstract

A method for setting up video space index of photographic measurement includes inputting photographic measurement data, setting a numbers of time points in video time length, fetching said time points in sequence and adding start-up time of video on video time of the time point, comparing with each time point of photographic vehicle to obtain nearest time point and corresponding ground coordinate, storing said video time and ground coordinate, repeating above said fetching step till time points in video time length is fetched all.

Description

technical field [0001] The invention relates to the field of photogrammetry, in particular to a photogrammetry multimedia video with geographic reference, in particular to a method for establishing a photogrammetry video space index. Background technique [0002] At present, there are many companies that provide online map services, but the services focus on simple text and image information such as map browsing, point of interest search, blog map, traffic query, and location labeling. Multimedia video is very important for improving map service quality and enhancing user experience. The multimedia browsing of traditional two-dimensional maps is just a hyperlink, that is, video files or video streams can only be played at fixed points in a certain area of ​​the map. This is because: the existing video index only has a time index, that is, the existing The index of the video is the time index within the length of the video, and the spatial (such as geodetic coordinates, etc....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C11/36G01C21/26
Inventor 魏建魁朱亮
Owner 北京铁木牛智能机器科技有限公司