本文選題：閾值 + 掩模圖像��； 參考：《國(guó)土資源遙感》2017年02期

【摘要】：閾值取值是否合理對(duì)生成符合某種條件的二值及多值掩模圖像是否正確至關(guān)重要,而這項(xiàng)技術(shù)是去除干擾信息及提取有用信息的關(guān)鍵步驟�；诓煌拈撝�,探討如何判斷在生成單一干擾因素的二值掩模圖像時(shí)閾值是否合理的方法;并以青海省天峻地區(qū)TM數(shù)據(jù)為例,利用閾值合理的多值掩模圖像得到無(wú)干擾信息的遙感圖像,進(jìn)而提取了礦化蝕變異常信息,以實(shí)現(xiàn)閾值的合理性驗(yàn)證。結(jié)果表明,當(dāng)利用多種干擾因素的二值及多值掩模圖像提取的非干擾區(qū)域一致時(shí),則說(shuō)明生成單一干擾因素的二值掩模圖像的閾值取值合理,各種干擾因素相互不重疊;利用合理正確的多值掩模圖像才能更有效地剔除干擾及假異常信息,提取出真實(shí)可靠的礦化蝕變異常信息;由于合理的閾值較多,應(yīng)結(jié)合多種地學(xué)資料才能獲得最優(yōu)閾值。
[Abstract]:Whether the threshold value is reasonable is very important to the generation of binary and multi-valued mask images which meet certain conditions. This technique is a key step to remove interference information and extract useful information. Based on different thresholds, this paper discusses how to judge whether the threshold is reasonable when generating binary mask images with a single interference factor, and takes the TM data in Tianjun area of Qinghai Province as an example. The multivalue mask image with reasonable threshold is used to obtain the remote sensing image without interference information, and then the abnormal information of mineralization alteration is extracted to verify the rationality of the threshold value. The results show that the threshold value of the binary mask image generated by a single interference factor is reasonable and the interference factors do not overlap each other when the binary interference factors and the non-interference regions extracted from the multi-valued mask images are consistent. Using the reasonable and correct multi-value mask image, the interference and false anomaly information can be eliminated more effectively, and the true and reliable information of mineralization alteration anomaly can be extracted. As there are more reasonable thresholds, the optimal threshold can be obtained only by combining many kinds of geoscience data.
【作者單位】： 青海大學(xué)地質(zhì)系;青藏高原北緣新生代資源環(huán)境重點(diǎn)實(shí)驗(yàn)室;
【分類號(hào)】：TP751

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1 袁崇謙;周建勛;韓波;;模糊掩模及其與傳統(tǒng)掩模的關(guān)系[J];遙感技術(shù)與應(yīng)用;2009年04期

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本文編號(hào)：1919219