耀斑遙感圖像均衡化的多項(xiàng)式擬合方法
發(fā)布時(shí)間:2018-04-21 07:21
本文選題:太陽耀斑 + 均衡化; 參考:《中國海洋大學(xué)學(xué)報(bào)(自然科學(xué)版)》2010年06期
【摘要】:光學(xué)遙感圖像中光斑區(qū)的出現(xiàn)是不可避免的,以MODIS為代表的中分辨率光學(xué)遙感器具有更寬的覆蓋寬度,其耀斑區(qū)范圍更大。耀斑區(qū)雖然對于傳統(tǒng)的水色遙感是噪聲,但對于海洋內(nèi)波等動(dòng)力過程的觀測卻是非常有益的。由于耀斑區(qū)的亮度遠(yuǎn)大于其它,因此為了觀測整景圖像范圍的內(nèi)波需要進(jìn)行均衡化處理。本文以MODIS圖像為例,發(fā)展了基于多項(xiàng)式函數(shù)的擬合方法,較好的實(shí)現(xiàn)了圖像的均衡化處理,處理后的圖像亮度變化均勻,可以清楚的觀測整景圖像各個(gè)部分的內(nèi)波,而不需要逐一進(jìn)行圖像增強(qiáng)。
[Abstract]:The appearance of optical spot region in optical remote sensing image is inevitable. The middle resolution optical remote sensor represented by MODIS has wider coverage width and wider flare area. Although the flare region is noise for the traditional water color remote sensing, it is very useful for the observation of the dynamic processes such as ocean internal waves. Because the brightness of flare region is much higher than that of other regions, equalization is needed to observe the internal waves in the whole image range. Taking MODIS image as an example, the fitting method based on polynomial function is developed in this paper, and the equalization processing of image is realized. The brightness change of image after processing is uniform, and the internal wave of each part of the whole image can be clearly observed. There is no need for image enhancement one by one.
【作者單位】: 中國海洋大學(xué)環(huán)境科學(xué)與工程學(xué)院;國家海洋局第一海洋研究所;
【基金】:國家自然科學(xué)基金項(xiàng)目(60702077)資助
【分類號】:TP751;P182.52
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