A Method for Rapidly Determining the Seismic Performance of Buildings Based on Remote-Sensing Imagery and Its Application

Table 2

Proportions of the areas of GS buildings determined based on field survey data.

No.	Polygon area (m^2)	Actual building area (m^2)	Proportion of the building area (%)	No.	Polygon area (m^2)	Actual building area (m^2)	Proportion of the building area (%)
1	29603	7844	26.5	45	17196	5346	31
2	38537	13600	35.2	46	5674	2040	36
3	21714	10304	47.6	47	30500	9216	30.3
4	20643	5632	27.2	48	11571	3025	26.1
5	3820	987	25.9	49	17083	6109	35.8
6	7872	2538	32.1	50	11470	3552	31.1
7	2372	905	38.2	51	18869	4508	24
8	7998	2576	32.1	52	33812	10452	30.8
9	2257	846	37.5	53	8395	1168	13.9
10	2047	820	40	54	118826	24750	20.8
11	43994	13776	31.3	55	11587	3380	29.1
12	18170	6960	38.3	56	3805	882	23.1
13	4428	1008	22.8	57	4872	1755	36.1
14	7855	2565	32.6	58	9829	2700	27.6
15	6904	1980	28.6	59	21014	6975	33.2
16	5561	1755	31.5	60	1853	715	38.6
17	13685	4925	35.9	61	106230	34182	32.1
18	5070	1708	33.8	62	12199	3300	27
19	13971	4416	31.7	63	3053	1170	38.4
20	858	354	41.3	64	59944	15860	26.5
21	15366	2808	18.2	65	231045	45770	19.8
22	66359	17157	25.8	66	7012	1854	26.4
23	33167	6270	18.9	67	21612	8228	38.1
24	51630	8580	16.6	68	4299	1096	25.4
25	24665	5278	21.4	69	23105	4255	18.4
26	4147	1331	32.2	70	1093	532	48.5
27	7186	2560	35.6	71	66524	8316	12.5
28	4214	1716	40.6	72	35280	8142	23.1
29	6124	1785	29.2	73	34830	5940	17.1
30	24279	7875	32.5	74	38649	7200	18.6
31	11680	2768	23.8	75	27292	7458	27.3
32	28288	4284	15.2	76	23203	6528	28.1
33	54917	20790	37.8	77	30596	7920	25.9
34	16505	2575	15.5	78	18319	4004	21.9
35	24317	8556	35.2	79	48775	15750	32.3
36	145650	33060	22.7	80	23021	6555	28.5
37	41683	14896	35.6	81	42684	15228	35.8
38	17948	6407	35.8	82	6920	1764	25.5
39	3193	1000	31.2	83	14928	4826	32.4
40	2459	852	34.8	84	19870	8370	42.3
41	39456	11808	30	85	28199	8140	28.9
42	14554	4321	29.7	86	8947	2976	33.2
43	5660	2028	35.9	87	10307	2728	26.5
44	10147	2662	26.2	88	5129	1800	35.2