Classification of California agriculture using quad polarization radar data and Landsat Thematic Mapper data

Figures & data

1. California study site location.

2. PALSAR image (35 km by 65 km) for California. Acquired 1 May 2007 (polarizations VV, VH, and HV; RGB).

3. Subset mosaic of TM images (50 km by 75 km) for California (Bands 234-BGR).

Table 1. AOI class statistics (DN values) from the PALSAR scene. Mean and standard deviation

Land cover/use classes	Bands
		HH	HV	VH	VV
Almonds		15.42	32.27	35.06	14.11
		7.19	18.24	19.58	6.26
Cotton		7.32	10.44	14.19	7.16
		2.37	2.30	2.98	2.27
Fallow/idle cropland		7.06	10.60	11.80	7.02
		2.10	2.48	2.68	1.96
Alfalfa		12.89	14.86	15.988	12.03
		3.93	4.44	4.78	3.80

Table 2. Classification accuracies for stacked radar bands (HH, HV, VH, and VV)

PALSAR HH, HV, VH, VV
Land covers/uses	Almonds	Cotton	Fallow/idle crops	Alfalfa	User's accuracy
Almonds	20,616	1	82	1737	91.9
Cotton	0	16,364	3040	77	84.0
Fallow/idle crops	0	7788	8778	2495	46.1
Alfalfa	3	1547	1203	4178	60.3
Producer's accuracy	100.0	63.7	67.0	49.2
Overall accuracy					73.5

Table 3. Classification accuracies for stacked variance texture bands (13 × 13 window)

	PALSAR texture HH, HV, VH, VV
Land covers/uses	Almonds	Cotton	Fallow/idle crops	Alfalfa	User's accuracy
Almonds	20,611	0	160	675	96.1
Cotton	0	25,506	12220	3892	61.3
Fallow/idle crops	2	27	637	1627	27.8
Alfalfa	6	167	86	2293	89.9
Producer's accuracy	100.0	99.2	4.9	27.0
Overall accuracy					72.2

4 Stacked original radar with radar texture (variance 13 × 13)

HH, HV, VH, VV
Land covers/uses	Almonds	Cotton	Fallow	Alfalfa	User's accuracy
Almonds	20,619	0	161	1562	92.3
Cotton	0	19,470	4929	228	79.1
Fallow	0	5345	7678	2973	48.0
Alfalfa	0	885	335	3724	75.3
Producer's accuracy	100.0	75.8	58.6	43.9
Overall accuracy					75.8

5 AOI class statistics (DN values), TM image

	Bands
Land cover/use		Blue	Green	Red	NIR	MIR	MIR
Almonds		87.16	44.98	48.20	109.16	101.12	48.39
		12.64	9.69	16.87	16.41	25.38	21.57
Cotton		99.20	50.39	60.25	58.16	103.58	61.00
		3.97	3.08	4.34	4.54	10.54	7.74
Fallow/idle cropland		107.95	58.49	72.87	71.81	129.82	79.19
		10.31	6.75	9.53	10.12	19.03	13.30
Alfalfa		85.39	39.42	38.51	124.28	96.93	39.64
		8.61	5.90	10.77	30.74	11.24	11.06

6 Classification accuracies for Landsat TM

	Blue, green, red, NIR, MIR, MIR
Land covers/uses	Almonds	Cotton	Fallow	Alfalfa	User's accuracy
Almonds	16,064	0	484	241	95.7
Cotton	78	24,989	322	0	98.4
Fallow	651	647	12,268	3	90.4
Alfalfa	3826	64	29	8243	67.8
Producer's accuracy	77.9	97.2	93.6	97.1
Overall accuracy					90.7

7 Classification accuracies for original radar and Landsat

All ten bands (four radar and six optical)
Land covers/uses	Almonds	Cotton	Fallow	Alfalfa	User's accuracy
Almonds	20,619	0	868	841	92.3
Cotton	0	23,638	196	0	99.2
Fallow	0	1466	11,989	9	89.0
Alfalfa	0	596	50	7637	92.2
Producer's accuracy	100.0	92.0	91.5	90.0
Overall accuracy					94.1

8 Classification accuracies for radar texture (variance, 13 × 13) and Landsat

All ten bands (four radar and six optical)
Land covers/uses	Almonds	Cotton	Fallow	Alfalfa	User's accuracy
Almonds	20,593	0	228	383	97.1
Cotton	0	25,204	664	0	97.4
Fallow	0	432	12,163	10	96.5
Alfalfa	26	64	48	8094	98.3
Producer's accuracy	99.9	98.1	92.8	95.4
Overall accuracy					97.3