ASSESSING the ACCURACY of REMOTELY SENSED DATA - CHAPTER 7 docx

... map are not correlated), then probability tells us that the accuracy would be computed by mul- tiplying the accuracies of the layers together. Therefore, the accuracy of the final map is 90% × ... assessment of accuracy of maps produced for the California Department of Forestry and Fire Protection of the Klamath Province in northwestern California. Table 7- 3...

Ngày tải lên: 11/08/2014, 06:22

... as the infrared portions of the electromagnetic spectrum. The accuracy of maps made from remotely sensed data is measured by two types of criteria: location accuracy and classification or thematic ... 19 57 Assessing the accuracy of remotely sensed data : principles and practices / Russell Congalton, Kass Green. p. cm. — (Mapping science series) Includes b...

Ngày tải lên: 11/08/2014, 06:22

... labels or classified data generated from the remotely sensed data. Thus, two labels from each sample are compared to one another: • Reference data labels: the class label of the accuracy assessment ... decades. However, it was the development of these digital devices that had the most profound impact on accuracy assessment for all remotely sensed data. AERIAL...

Ngày tải lên: 11/08/2014, 06:22

... reference data should be collected as close as possible to the date of the collection of the remotely sensed data used to make the map. However, trade-offs may need to be made between the timeliness of ... REFERENCE DATA The world’s landscape is constantly changing. If change occurs between the date of capture of the remotely sensed data used to creat...

Ngày tải lên: 11/08/2014, 06:22

... regard to the location of these areas. In other words, a comparison between the number of acres or hectares of each category on the map generated from remotely sensed data and the reference data is ... to the use of the Kappa coefficient for assessing the accuracy of remotely sensed classifications because the degree of chance agreement may be over-...

Ngày tải lên: 11/08/2014, 06:22

... from the one used to create the map—a common occurrence when existing data or maps are used as reference data. • Changes in land cover between the date of the remotely sensed data and the date of ... IN THE REFERENCE DATA A major assumption of the error matrix is that the label from the reference information represents the “true” label of the site and...

Ngày tải lên: 11/08/2014, 06:22

... assess the accuracy of both the new map and the photo-based map. This chapter concentrates on the methods, assump- tions, and results of the accuracy assessment portions of the project. The sample design, ... up the reference data (the data against which the map is compared) during accuracy assessment. 2. The map site label refers to the map label of...

Ngày tải lên: 11/08/2014, 06:22

... Australia james@it.usyd.edu.au Abstract We compare the CCG parser of Clark and Curran (20 07) with a state -of -the- art Penn Treebank (PTB) parser. An accuracy com- parison is performed by converting the CCG derivations into ... (20 07) and Petrov and Klein (20 07) for details of the two parsers. 53 shows that converting gold-standard CCG deriva- tions into the GRs in DepBank...

Ngày tải lên: 17/03/2014, 02:20

... severity of the spill. The purpose of contingency plans is to coordinate all aspects of the response to an oil spill. This includes stopping the flow of oil, containing the oil, and cleaning it up. The ... serious. As the seriousness of an incident is often not known in the initial phases, one of the first priorities is to determine the magnitude of the spill...

Ngày tải lên: 11/08/2014, 04:20

... much on the thickness of the oil, type of oil, sea state, and many other factors. **This is the percentage of oil in the recovered product. The higher the value, the less the amount of water ... is the percentage of oil in the recovered product. The higher the value, the lower the amount of water and thus the better the sorbent’s performance. ©200...

Ngày tải lên: 11/08/2014, 04:20