Page 328 - NGTU_paper_withoutVideo
P. 328
Modern Geomatics Technologies and Applications
Object oriented classification
Pixel base classification Fig. 5
Fig.4. Classification maps of two methods in IKONOS image.
6 - Comparison of the classification results by pixel-based and object-oriented approaches
In flowing graphs, the evaluation results of pixel base classification and object-oriented classification were shown.
120
100
80
60
40
20
0
Vegetation Road Residental Bare Shadow Kappa Coefficient
Overall Accuracy
LISS-PB LISS-OB IRS-PAN -PB
IRS- PAN - OB IKONOS -PB IKONOS- OB
Fig.5 comparing classification accuracy by two methods in different images (emphasizing class extraction)
7