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Method for splicing high-definition image panorama of high-pressure rod tower on basis of ORB (Object Request Broker) feature point

A high-definition image and feature point technology, applied in image analysis, image data processing, 2D image generation, etc., to achieve the effect of improving matching accuracy and reducing matching time

Active Publication Date: 2013-01-02
STATE GRID INTELLIGENCE TECH CO LTD
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Problems solved by technology

However, when extracting feature points from high-resolution images, there will be a lot of time spent on feature point extraction.

Method used

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  • Method for splicing high-definition image panorama of high-pressure rod tower on basis of ORB (Object Request Broker) feature point
  • Method for splicing high-definition image panorama of high-pressure rod tower on basis of ORB (Object Request Broker) feature point
  • Method for splicing high-definition image panorama of high-pressure rod tower on basis of ORB (Object Request Broker) feature point

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Embodiment Construction

[0059] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0060] Such as figure 1 Shown, method step of the present invention is as follows:

[0061] The first step is to read the ultra-high-resolution high-voltage tower image with a size of W×H, and use the bilinear interpolation method to sample and reduce the ultra-high-resolution image to be stitched to obtain a w×h image, where W, H, w , h is an integer greater than 0, k is an integer greater than 0;

[0062] The second step is to use the ORB algorithm to perform feature extraction on all sampled images:

[0063] The ORB feature uses the Oriented FAST feature point detection operator and the Rotated BRIEF feature descriptor. The ORB algorithm not only has the detection effect of SIFT features, but also has the characteristics of rotation, scaling, and brightness change invariance. The most important thing is that its time complexity is greatly reduce...

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Abstract

The invention discloses a method for splicing a high-definition image panorama of a high-pressure rod tower on the basis of an ORB (Object Request Broker) feature point. The method comprises the following steps: 1) reading ultrahigh resolution high-pressure rod tower images of which the sizes are W*H, and sampling and reducing the to-be-spliced ultrahigh resolution images by utilizing a bilinear interpolation method, thereby obtaining a w*h image, wherein W, H, w and h are integers greater than 0 and k is the integer greater than 0; 2) utilizing an ORB algorithm to extract features of all the sampled images; 3) roughly matching the ORB features extracted in the step 2); 4) utilizing matching point pairs extracted in the previous step to extract the ORB features again in an image block in which the matching point pairs of an original ultrahigh resolution image are located, thereby finely matching; 5) calculating a transformational matrix H between adjacent images through the solved matching point pairs; and 6) utilizing a gradually fading method to fuse the adjacent ultrahigh resolution images. According to the method, the seamless splicing for the ultrahigh resolution images is realized, the time for splicing is reduced, the splicing efficiency is increased and the beneficial effect on the high-definition image is achieved.

Description

technical field [0001] The invention relates to a high-voltage tower high-definition panoramic splicing method, in particular to a high-voltage tower high-definition panoramic splicing method based on ORB feature points. Background technique [0002] In recent years, the sustained and rapid development of my country's national economy has put forward higher and higher requirements for my country's electric power industry. Due to the vast territory of our country and the complex terrain of transmission line corridors, the limitations of the traditional manual line inspection operation mode have become increasingly prominent. It has become possible to use unmanned aerial vehicles equipped with digital imaging equipment to conduct detailed inspections of overhead transmission lines. Although the high-definition rate has reached the requirement of seeing the fittings of the high-voltage transmission line in detail, due to the small field of view of the imaging equipment, the col...

Claims

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Application Information

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IPC IPC(8): G06T11/00G06T7/00
Inventor 张晶晶王滨海王万国刘俍王骞宋永吉魏传虎李丽
Owner STATE GRID INTELLIGENCE TECH CO LTD
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