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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B2. Istanbul 2004 | Interna 
Change map-speck situation statistics of expressing | panch 
7 PRECISION STATISTICS land-using classification interpretation attribute error resolu 
was shown as table 2. 
The at 
Table 2. change map-speck land-using attribute error of classification interpretation statistics by RS 
time s i0 monit« 
| 2000.10—2001.10, 2000ETM, 2001SPOT 
interval value 
monitoring | map-speck change percent unchanged | percent | 2000-6660m* | more than Octob: 
region total amount amount amount amount 6660m^ amount Octob: 
Weihai 267 243 91:0 24 9-0 58 209 
| 
Huancui 89 85 95.5 4 4.5 19 70 
Rongcheng 74 64 86.5 10 Hs 18 56 
Wendeng 60 51 85.0 9 15.0 11 49 | 
Rushan 44 43 97.7 1 2.3 10 34 | amply 
The least map-speck area which could be discovered was 2000m?> for in: 
^ | . 
time inform 
: 1998.10— 2000.10, 1998TM, 2000ETM | extent 
interval | 
a n type; 
monitoring | map-speck change percent unchanged | percent | 2000—6660m? | more than | yp 
: 2 achiev 
region total amount amount amount amount 6660m^ amount s 
Weihai 117 100 85.3 17 14.5 117 | 
This 
Huancui 35 31 88.6 4 11.4 35 
transfe 
Rongcheng 30 26 86.7 4 13.3 30 
map-sj 
Wendeng 29 21 72.4 8 27.6 29 : 
establi 
Rushan 23 22 95.7 1 4.3 23 : 
feature 
The least map-speck area which could be discovered was 6660m^ nit 
monitc 
| vector 
The attribute of change map-speck had been verified inside works monitoring area in  Weihai city 
100 percent. By wild investigation checking, jurisdiction over three town and one district was Adopt 
attribute precision of straight inside works considered true value to carry on precision | sisi 
interpretation overall monitoring region reached evaluating. foa SI 
average 91.0 percent during October 2000 to October | up cha 
2001, the highest 97.7 percent, the lowest 85.0 Precision evaluation. Area relative mean square error | other 
percent; attribute precision of straight inside works of single map-speck RS monitoring, its value was 8.5 | acc 
interpretation overall monitoring region reached percent calculated with RS monitoring data during 
| 
average 85.5 percent during October 1998 to October October 2000 to October 2001; its value was 10.3 Makin, 
2000, the highest 95.7 percent, the lowest 72.4 percent calculated with RS monitoring data during Could 
percent; inside works error interpretation was main October 1998 to October 2000; two results was both 2000m 
caused by that although land cover of single less than 15 percent, conformed to demand. spatial 
map-speck had been changed, and secing from image, | map-si 
the spectrum and veins of this map-speck had been Area omission error of small map-speck, its value 
changed during previous timeliness to behind accounted for 4.8 percent of the total monitoring area Landau 
timeliness too, but land-using classification had not during October 2000 to October 2001; its value modifi 
been changed. accounted for more than 9.2 percent of total accom 
The obtaining of theoretic value: it was limited to monitoring area, map-speck of less than 6660m* data. I 
gaming true value this monitoring, map-speck area could not be discovered fundamentally. The main and ais 
which GPS wild investigation actual data and land reason was that there was only TM multi-spectrum fat as 
modification investigation area was identical with data on October 1998,but there was only | monito 
  
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