Iso5725-2 Standard Application to Verification of Orthophoto-based Impervious Surface Area and Imperviousness Factor Determination
نویسندگان
چکیده
The main aim of the research described in the paper was analyse the accuracy of photointerpretation of impervious surface using IKONOS images and its influence on the imperviousness factor determination. Two kinds of IKONOS image were chosen to tests: panchromatic and colour pansharp. Airborne ortopho (pixel size of 0.2m) was applied as a reference. Six operators, digitised three times, two kinds of IKONOS image, on the six test areas (300x300m). Accuracy analysis was performed applying different parameters, among others: RMS and reproducibility (ISO 5725-2). Then, each test area was grided with 30m pixel size (simulation Landsat image) and imperviousness factor was in each pixel determined. Mean error for PAN image was ca. 20% and for RGB image ca. 10%.
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