Research on cloud detection for HY-1C CZI remote sensing images collected over lands

نویسندگان

چکیده

搭载在中国首颗海洋水色业务卫星HY-1C上的海岸带成像仪CZI(Coast Zone Imager)于2019å¹´6æœˆå¼€å§‹ä¸šåŠ¡åŒ–è¿è¡Œï¼Œå ¶èŽ·å–çš„å¤§é‡æµ·å²¸å¸¦ã€é™†åœ°å’Œæµ·æ´‹æ•°æ®å¯¹äºŽæµ·æ´‹ç¾å®³ä¸ŽçŽ¯å¢ƒç›‘æµ‹ç ”ç©¶å ·æœ‰é‡è¦æ„ä¹‰ã€‚CZI对地观测受云干扰,影响数据的后续应用。现有的云检测算法大都基于RGBå›¾åƒæˆ–è€ åŒ å«çƒ­çº¢å¤–çš„å¤šå ‰è°±å±•å¼€ï¼Œå¯¹äºŽHY-1C CZI这类RGB-近红外4ä¸ªæ³¢æ®µé¥æ„Ÿå›¾åƒç ”ç©¶è¾ƒå°‘ã€‚ä¸ºæ­¤ï¼Œæœ¬æ–‡æå‡ºäº†ä¸€ç§é’ˆå¯¹HY-1C CZIé¥æ„Ÿå›¾åƒçš„éžç›‘ç£é¥æ„Ÿå›¾åƒäº‘æ£€æµ‹æ–¹æ³•ã€‚è¯¥æ–¹æ³•åŒ å«è®­ç»ƒæ ·æœ¬é€‰æ‹©ã€ç‰¹å¾æå–ã€æ”¯æŒå‘é‡æœºSVM(Support Vector Machine)分类和后处理这4ä¸ªè¿‡ç¨‹ã€‚åœ¨è®­ç»ƒæ ·æœ¬é€‰æ‹©ä¸­ï¼Œç»“åˆæš—é€šé“åå°„çŽ‡ã€å½’ä¸€åŒ–æ¤è¢«æŒ‡æ•°å’Œç™½åº¦æŒ‡æ•°ï¼Œæå‡ºäº†ä¸€ç§è®­ç»ƒæ ·æœ¬è‡ªåŠ¨æå–ç®—æ³•ã€‚è¯¥ç®—æ³•ä½¿ç”¨ç™½åº¦æŒ‡æ•°ä½œä¸ºé¥æ„Ÿå›¾åƒç»†èŠ‚ä¿¡æ¯æå–æ•°æ®æºï¼Œå¹¶é€šè¿‡é€æ­¥ç»†åŒ–è¿‡ç¨‹ç²¾ç¡®æå–æ ·æœ¬ã€‚é’ˆå¯¹ç‰¹å¾æå–ï¼Œé€‰å–å›¾åƒçš„ç©ºâ€”è°±ç‰¹å¾ä¿¡æ¯ï¼ŒåŒ å«åå°„çŽ‡ã€å ‰è°±æŒ‡æ•°ã€çº¹ç†å’Œç»“æž„ç‰¹å¾ï¼Œä½¿äº‘ä¸Žéžäº‘åŒºåŸŸçš„å·®å¼‚æœ€å¤§åŒ–ã€‚åŸºäºŽè‡ªåŠ¨æå–çš„è®­ç»ƒæ ·æœ¬åŠå ¶ç‰¹å¾æè¿°ï¼Œé‡‡ç”¨SVM对CZI遥感数据进行初分类,并在此基础上进行导向滤波、孔洞填å å’Œå‡ ä½•åˆ¤æ–­åŽå¤„ç†ï¼Œä»¥èŽ·å–äº‘æ£€æµ‹ç»“æžœã€‚è¯¥ç®—æ³•çš„ä¼˜åŠ¿åœ¨äºŽï¼šï¼ˆ1ï¼‰æ— éœ€äººå·¥æ ‡æ³¨å³å¯è‡ªåŠ¨èŽ·å–è®­ç»ƒæ ·æœ¬ï¼›ï¼ˆ2)能够å 分利用近红外波段信息。本文将该算法运用于植被、土壤、湿地和冰雪场景这4ç§å ¸åž‹åœºæ™¯ä¸­ï¼Œå¹¶ä¸Žç›®å‰æµè¡Œçš„éžç›‘ç£äº‘æ£€æµ‹ç®—æ³•å¯¹æ¯”åˆ†æžã€‚ç›¸è¾ƒäºŽå ¶ä»–äº‘æ£€æµ‹ç®—æ³•ï¼Œå®šæ€§åˆ†æžç»“æžœè¡¨æ˜Žæœ¬æ–‡äº‘æ£€æµ‹ç»“æžœä¸Žäººå·¥æ ‡æ³¨çš„äº‘åˆ†å¸ƒçœŸå®žå›¾å ·æœ‰è¾ƒå¥½çš„ä¸€è‡´æ€§ï¼›å®šé‡ç»“æžœè¡¨æ˜Žæœ¬æ–‡æå‡ºçš„ç®—æ³•åœ¨å„ä¸ªåœºæ™¯ä¸Šéƒ½å ·æœ‰æœ€ä½Žçš„é”™è¯¯çŽ‡ã€‚é€šè¿‡ä»¥ä¸Šå¯¹æ¯”åˆ†æžï¼Œè¡¨æ˜Žæœ¬æ–‡æå‡ºçš„äº‘æ£€æµ‹ç®—æ³•åœ¨ä¸åŒçš„åœºæ™¯ä¸‹è¯†åˆ«ç»“æžœéƒ½æ›´åŠ å‡†ç¡®ï¼Œè¯æ˜Žäº†æœ¬æ–‡ç®—æ³•å¯¹äºŽHY-1C CZI陆地遥感图像云检测的有效性。

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ژورنال

عنوان ژورنال: Journal of remote sensing

سال: 2023

ISSN: ['1007-4619', '2095-9494']

DOI: https://doi.org/10.11834/jrs.20221535