Rocky Desertification Information Extraction in Karst Terrain Complex Area Based on Endmember Variable

数据源	时间	参数	获取方式
GF-2	2019年1月	多光谱4波段, 全色分辨率0.8 m	高分贵州分中心
GF-5	2020年1月	高光谱330波段, 分辨率30 m
GF-6	2020年2月	多光谱4波段, 全色分辨率2 m
DEM	/	分辨率30 m	地理空间数据云

Table 2. Overall accuracy (OA) and Kappa coefficient of estimated vegetation and bare rock coverage percentage
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Table 2. Overall accuracy (OA) and Kappa coefficient of estimated vegetation and bare rock coverage percentage
光照区阴影区所有区域
GLMM SCLSU DPM GLMM SCLSU DPM GLMM SCLSU DPM
OA/% 86.81 66.53 74.44 78.18 35.91 44.09 84.89 59.68 67.34
Kappa 0.767 0.451 0.553 0.559 0.111 0.061 0.723 0.357 0.433

Table 3. Confusion matrix of accuracy verification of results in illumination area and shadow area

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Table 3. Confusion matrix of accuracy verification of results in illumination area and shadow area

GLMM_光照区基岩裸露率/%		参考数据						GLMM_光照区植被覆盖度/%		参考数据
GLMM_光照区基岩裸露率/%		0~ 20	20~ 35	35~ 50	50~ 70	70~ 100	PA/%	GLMM_光照区植被覆盖度/%		0~ 20	20~ 35	35~ 50	50~ 70	70~ 100	PA/%
反演数据	0~20	29	0	0	0	0	100.0	反演数据	0~20	36	9	1	0	0	78.3
	20~35	2	4	1	0	0	57.1		20~35	5	36	5	0	1	76.6
	35~50	0	2	6	2	0	60.0		35~50	0	12	31	4	0	66.0
	50~70	0	0	1	16	15	50.0		50~70	0	0	6	34	18	58.6
	70~100	0	0	0	3	240	98.8		70~100	0	0	0	8	193	96.0
	UA/%	93.5	66.7	75.0	76.2	94.1			UA/%	87.8	63.2	72.1	73.9	91.0
FCLSU_光照区基岩裸露率/%		参考数据						FCLSU_光照区植被覆盖度/%		参考数据
FCLSU_光照区基岩裸露率/%		0~ 20	20~ 35	35~ 50	50~ 70	70~ 100	PA/%	FCLSU_光照区植被覆盖度/%		0~ 20	20~ 35	35~ 50	50~ 70	70~ 100	PA/%
反演数据	0~20	11	0	0	0	0	100.0	反演数据	0~20	31	26	5	0	1	49.2
	20~35	12	1	0	1	0	7.1		20~35	4	18	17	2	0	43.9
	35~50	6	4	1	0	0	9.1		35~50	1	8	14	16	5	31.8
	50~70	2	1	4	7	4	38.9		50~70	2	4	6	22	27	36.1
	70~100	0	0	3	13	251	94.0		70~100	3	1	1	6	179	94.2
	UA/%	35.5	16.7	12.5	33.3	98.4			UA/%	75.6	31.6	32.6	47.8	84.4
DPM_光照区基岩裸露率/%		参考数据						DPM_光照区植被覆盖度/%		参考数据
DPM_光照区基岩裸露率/%		0~ 20	20~ 35	35~ 50	50~ 70	70~ 100	PA/%	DPM_光照区植被覆盖度/%		0~ 20	20~ 35	35~ 50	50~ 70	70~ 100	PA/%
反演数据	0~20	16	1	2	2	2	69.6	反演数据	0~20	17	5	0	0	0	77.3
	20~35	3	0	0	0	1	0.0		20~35	24	38	5	1	1	55.1
	35~50	6	2	0	1	6	0.0		35~50	0	14	28	16	5	44.4
	50~70	1	0	0	3	3	42.9		50~70	0	0	10	27	42	34.2
	70~100	5	3	6	15	243	89.3		70~100	0	0	0	2	164	98.8
	UA/%	51.6	0.0	0.0	14.3	95.3			UA/%	41.5	66.7	65.1	58.7	77.4
GLMM_阴影区基岩裸露率/%		参考数据						GLMM_阴影区植被覆盖度/%		参考数据
GLMM_阴影区基岩裸露率/%		0~ 20	20~ 35	35~ 50	50~ 70	70~ 100	PA/%	GLMM_阴影区植被覆盖度/%		0~ 20	20~ 35	35~ 50	50~ 70	70~ 100	PA/%
反演数据	0~20	9	2	1	0	0	75.0	反演数据	0~20	6	4	1	0	0	54.5
	20~35	0	1	0	0	0	100.0		20~35	7	2	1	0	0	20.0
	35~50	1	0	1	1	1	25.0		35~50	1	0	4	0	0	80.0
	50~70	0	0	1	2	8	18.2		50~70	0	0	0	9	8	52.9
	70~100	0	0	0	3	49	94.2		70~100	0	0	0	8	89	91.8
	UA/%	90.0	33.3	33.3	33.3	84.5			UA/%	42.9	33.3	66.7	52.9	91.8
FCLSU_阴影区基岩裸露率/%		参考数据						FCLSU_阴影区植被覆盖度/%		参考数据
FCLSU_阴影区基岩裸露率/%		0~ 20	20~ 35	35~ 50	50~ 70	70~ 100	PA/%	FCLSU_阴影区植被覆盖度/%		0~ 20	20~ 35	35~ 50	50~ 70	70~ 100	PA/%
反演数据	0~20	2	0	0	0	0	100.00	反演数据	0~20	9	6	3	1	1	45.0
	20~35	1	0	1	0	0	0.00		20~35	4	0	1	11	26	0.0
	35~50	0	0	0	0	0	/		35~50	0	0	1	3	39	2.3
	50~70	6	3	1	0	0	0.00		50~70	1	0	1	2	24	7.1
	70~100	1	0	1	6	58	87.88		70~100	0	0	0	0	7	100.0
	UA/%	20.00	0.00	0.00	0.00	100.00			UA/%	64.3	0.0	16.7	11.8	7.2
DPM_阴影区基岩裸露率/%		参考数据						DPM_阴影区植被覆盖度/%		参考数据
DPM_阴影区基岩裸露率/%		0~ 20	20~ 35	35~ 50	50~ 70	70~ 100	PA/%	DPM_阴影区植被覆盖度/%		0~ 20	20~ 35	35~ 50	50~ 70	70~ 100	PA/%
反演数据	0~20	0	0	0	0	1	0.0	反演数据	0~20	2	2	1	0	0	40.0
	20~35	0	0	0	1	1	0.0		20~35	4	0	2	5	2	0.0
	35~50	0	0	1	1	12	7.1		35~50	1	0	2	2	13	11.1
	50~70	5	0	0	4	26	11.4		50~70	0	0	1	2	14	11.8
	70~100	5	3	2	0	18	64.3		70~100	7	4	0	8	68	78.2
	UA/%	0.0	0.0	33.3	66.7	31.0			UA/%	14.3	0.0	33.3	11.8	70.1

Table 4. Correlation coefficient between prediction value of each method and cosine value of solar incident angle
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Table 4. Correlation coefficient between prediction value of each method and cosine value of solar incident angle
GLMM_裸岩 GLMM_植被 FCLSU_裸岩 FCLSU_植被 DPM_裸岩 DPM_植被
相关系数 -0.159 0.045 0 -0.621^** -0.582^** 0.549^**
p 0.269 0.758 0.998 0 0 0

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Ou RUAN, Sui-hua LIU, Jie LUO, Hai-tao HU. Rocky Desertification Information Extraction in Karst Terrain Complex Area Based on Endmember Variable[J]. Spectroscopy and Spectral Analysis, 2022, 42(7): 2269

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Paper Information

Category: Orginal Article

Received: Jun. 9, 2021

Accepted: --

Published Online: Nov. 16, 2022

The Author Email:

DOI:10.3964/j.issn.1000-0593(2022)07-2269-09

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Parameters of data source

Table 1. Parameters of data source

Table 2. Overall accuracy (OA) and Kappa coefficient of estimated vegetation and bare rock coverage percentage

Table 2. Overall accuracy (OA) and Kappa coefficient of estimated vegetation and bare rock coverage percentage

Table 3. Confusion matrix of accuracy verification of results in illumination area and shadow area

Table 3. Confusion matrix of accuracy verification of results in illumination area and shadow area

Table 4. Correlation coefficient between prediction value of each method and cosine value of solar incident angle

Table 4. Correlation coefficient between prediction value of each method and cosine value of solar incident angle

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