面向地理國情監(jiān)測的遙感影像變化檢測方法研究
本文選題:面向?qū)ο?/strong> + 多級分解 ; 參考:《遼寧工程技術(shù)大學(xué)》2013年碩士論文
【摘要】:面向地理國情監(jiān)測重大工程應(yīng)用,本文重點(diǎn)研究高分辨率遙感影像變化檢測方法及技術(shù),建立變化檢測工藝流程,研制變化檢測軟件系統(tǒng),實(shí)現(xiàn)方法及系統(tǒng)的初步應(yīng)用,為地理要素變化檢測提供技術(shù)手段與軟件平臺。主要包括以下幾個(gè)方面的內(nèi)容: (1)基于多級分解模型的變化檢測方法研究。分析典型地物地類特征,建立多級分解模型,對前后兩期遙感影像使用分解統(tǒng)一模版,以最小分解子塊作為變化檢測基本處理單元,探索多級分解的變化檢測分解思路。 (2)基于模糊規(guī)則的變化信息預(yù)測。設(shè)定判斷閾值,將整幅影像歸類為:確定變化、確定未變化和模糊變化三個(gè)區(qū)域;對模糊變化區(qū)域依照模糊判斷規(guī)則歸類,輔助人工判讀,獲得變化區(qū)域范圍信息。 (3)面向?qū)ο蟮淖兓畔⑻崛。通過自適應(yīng)閾值分析,模糊判斷獲得的變化檢測結(jié)果為發(fā)生變化與未發(fā)生變化的二值掩膜影像。選擇SVM或GLC分類器對變化區(qū)域進(jìn)行分類,得到準(zhǔn)確的變化信息。 (4)面向地理國情監(jiān)測的變化檢測工藝流程。在測繪科學(xué)研究院研發(fā)的地理國情地表覆蓋解譯系統(tǒng)的基礎(chǔ)上,將本文所提出的多級分解模糊判斷變化檢測方法工藝流程進(jìn)行集成,優(yōu)化基于地理國情監(jiān)測的高分辨率遙感影像地表覆蓋解譯系統(tǒng)。
[Abstract]:In this paper, the methods and techniques of high-resolution remote sensing image change detection are studied, the process flow of change detection is established, the software system of change detection is developed, and the method and the preliminary application of the system are studied. It provides technical means and software platform for the change detection of geographical elements. It mainly includes the following aspects: 1) Research on change detection method based on multilevel decomposition model. This paper analyzes the characteristics of typical ground objects, establishes a multilevel decomposition model, uses a unified decomposition template for the two periods of remote sensing images, and takes the minimum decomposition sub-block as the basic processing unit for change detection, and probes into the idea of multi-level decomposition for the change detection and decomposition. 2) Prediction of change information based on fuzzy rules. The whole image is classified into three regions: determine the change, determine the unchanged and fuzzy change, and classify the fuzzy change area according to the fuzzy judgment rule, and then obtain the range information of the change region by manual interpretation. 3) object-oriented change information extraction. Through adaptive threshold analysis, the change detection results obtained by fuzzy judgment are binary mask images with or without change. Select SVM or GLC classifier to classify the change region and get accurate change information. 4) change detection process for geographical situation monitoring. On the basis of the ground cover interpretation system developed by the Institute of surveying and Mapping Sciences, the process flow of the multi-level decomposition fuzzy judgment change detection method proposed in this paper is integrated. To optimize the land cover interpretation system of high resolution remote sensing image based on geographical situation monitoring.
【學(xué)位授予單位】:遼寧工程技術(shù)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2013
【分類號】:P237
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