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Method and device for fitting top view based on multi-directional photography

A top view, multi-directional technology, applied in editing/combining graphics or text, graphics and image conversion, image data processing, etc., can solve problems such as poor operability and poor versatility

Active Publication Date: 2021-04-27
CHENGDU KANGYE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a method and device for fitting a top view based on multi-directional photography, so as to alleviate the technical problems of poor operability and poor versatility of the method for obtaining a top view in the prior art

Method used

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  • Method and device for fitting top view based on multi-directional photography
  • Method and device for fitting top view based on multi-directional photography
  • Method and device for fitting top view based on multi-directional photography

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Embodiment 1

[0074] A method for fitting top view based on multi-directional photography, refer to figure 1 , the method includes:

[0075] S102. Obtain a plurality of images to be processed taken at intervals of preset fixed angles in the 360-degree direction of the horizontal plane to be measured, wherein the preset fixed angles are angles divisible by 360 degrees, and each image to be processed includes: a reference image, four a pre-calibrated feature point;

[0076] In the embodiment of the present invention, multiple images to be processed may be captured by survey equipment. Specifically, the survey equipment has an elevating mast that can be lifted. The camera is installed on the top of the elevating mast, and the camera can rotate 360 ​​degrees. When in use, the elevating mast is lifted to a preset fixed height, and then the distance between the cameras is controlled. The horizontal plane to be measured is photographed at a preset fixed angle, and multiple images to be processe...

Embodiment 2

[0167] A device for fitting top view based on multi-directional photography, refer to Figure 8 , the device consists of:

[0168] The acquisition module 11 is used to acquire a plurality of images to be processed taken at intervals of preset fixed angles in the 360-degree direction of the horizontal plane to be measured, wherein the preset fixed angles are angles divisible by 360 degrees, and each image to be processed includes: Reference image, four pre-calibrated feature points;

[0169] The perspective transformation processing module 12 is used to perform perspective transformation processing on each image to be processed to obtain a corresponding top view, wherein the four pre-marked feature points are known based on the coordinates of the top view;

[0170] The cropping module 13 is used to cut each top view according to the shooting direction of the image to be processed corresponding to the top view and a preset fixed angle, so as to obtain a cropped top view;

[01...

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Abstract

The present invention provides a method and device for fitting a top view based on multi-directional photography. The method includes: acquiring a plurality of images to be processed taken at preset fixed angles in 360-degree directions of a horizontal plane to be measured; Perspective transformation processing to obtain the corresponding top view; cutting each top view according to the shooting direction of the image to be processed corresponding to the top view and a preset fixed angle to obtain a cropped top view; The angle of rotation is restored and spliced ​​to obtain a top view of the horizontal plane to be measured. The method for obtaining the top view in the embodiment of the present invention only needs to obtain multiple images to be processed in the 360-degree direction of the horizontal plane to be measured, and then process the multiple images to be processed to obtain the top view of the horizontal plane to be measured. The method has strong operability, good universality and simple process, and alleviates the technical problems of poor operability and poor universality of the method in the prior art.

Description

technical field [0001] The present invention relates to the technical field of image data processing, in particular to a method and device for fitting a top view based on multi-directional photography. Background technique [0002] When collecting evidence at the scene of a traffic accident, it is necessary to obtain a top view of the accident scene for distance measurement to help the traffic police restore the scene of the accident. [0003] Overlook at the current stage Figure 1 It is generally obtained by unmanned aerial vehicles or professionals working at heights. The flight of drones depends on professional pilots and is restricted by weather (such as rain, snow, lightning, and strong winds), while direct high-altitude operations are difficult to implement due to terrain and environmental factors, and high-altitude operators have to bear higher risks . [0004] To sum up, the method for obtaining a top view in the prior art has poor operability and poor versatility...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T11/60G06T3/00
CPCG06T3/0012G06T11/60
Inventor 郑波杜厚圻王宗林魏正杰李卿
Owner CHENGDU KANGYE TECH CO LTD