High spatial resolution remote sensing image crown outline delineation system and method

A high-spatial-resolution, remote-sensing image technology, applied in the field of high-spatial-resolution remote sensing image canopy outline delineation systems, can solve the problems of cumbersome procedures, poor stability of extraction results, etc., and achieve a good processing effect.

Inactive Publication Date: 2012-08-29
RES INST OF FOREST RESOURCE INFORMATION TECHN CHINESE ACADEMY OF FORESTRY
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Problems solved by technology

The object-oriented tree crown extraction method is cumbersome, and the parameters need to be adjusted every time, so the stability of the extraction results is not good

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  • High spatial resolution remote sensing image crown outline delineation system and method
  • High spatial resolution remote sensing image crown outline delineation system and method
  • High spatial resolution remote sensing image crown outline delineation system and method

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Embodiment Construction

[0056] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention.

[0057] figure 1 It is a schematic flow chart of a method embodiment of the present invention. Such as figure 1 As shown, the method embodiment mainly includes the following steps:

[0058] Step S110, obtaining high spatial resolution remote sensing images of forest stands in the growing season;

[0059] Obtain remote sensing images with a spatial resolution greater than 1 meter (m), such images can be digital images of aeronautical charge-coupled device image sensors (CCD), satellite data such as Quickbird panchromatic, IKNOS (IKNOS) ) panchromatic or panchromatic and multispectral fusion image;

[0060] This embodiment takes the fast bird fusion image of a poplar p...

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Abstract

The invention discloses a high spatial resolution remote sensing image crown outline delineation system and a method and aims at delineating the crown outline of a high spatial resolution remote sensing image simply and efficiently. The method includes the following steps: acquiring a high spatial resolution remote sensing image with forest stand being in growing season and extracting a single forest stand image; according to the single forest stand image, using gradient as division function and adopting Laplace-Gauss operator to conduct boundary detection on a grayscale image and obtain an intermediate result image; subsequently, adopting morphology technology to mark a foreground treetop object in a front intermediate result image to obtain a treetop tag; calculating a background tag inthe intermediate result image and generating a crown boundary line surrounding each treetop tag; and then conducting crown delineation on the crown boundary line under the guide of treetop to obtain a crown outline distribution chart. Compared with the prior art, the system and the method can be applied to the fields such as forestry investigation, forest resource monitoring, forestry remote sensing and the like.

Description

technical field [0001] The invention relates to forest resources management technology, in particular to a system and method for delineating tree crown contours of high spatial resolution remote sensing images. Background technique [0002] At present, the quantitative measurement method of individual tree crown width in actual forest stands is mostly used to obtain parameters such as the profile of individual tree crowns. This method takes the trunk as the center, measures the radii of the trunk in 8 directions or 4 directions, and then obtains the outline of the crown of a single tree by using a circular or elliptical approximation method, and then estimates the size of the crown of a single tree. This method has a large workload, high cost, and low estimation frequency. It is difficult to obtain continuous observation data, and it cannot provide timely and accurate decision support for forest resource management. [0003] Based on high-resolution remote sensing images, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/48G06T7/60G06K9/00G06T7/62
Inventor 邓广李增元武红敢冯益明庞勇覃先林
Owner RES INST OF FOREST RESOURCE INFORMATION TECHN CHINESE ACADEMY OF FORESTRY
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