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MODIS 影像轉檔與幾何糾正

MODIS 影像轉檔與幾何糾正. 檔名輸入 ex:20060211_250m. MODIS 影像轉檔 (*.hdf → *.img ). 選擇 HDF Raster(Direct Read). 欲轉檔之影像 *.hdf. MODIS 影像轉檔 (*.hdf → *.img ). 影像處理. 轉檔完成. MODIS 影像幾何糾正. 點選 Viewer/ 開啟欲糾正之* .img. MODIS 影像幾何糾正. MODIS 影像幾何糾正. 在欲校正的影像工具列中選取 Raster/Geometric Correction( 幾何校正 ). MODIS 影像幾何糾正.

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MODIS 影像轉檔與幾何糾正

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  1. MODIS影像轉檔與幾何糾正

  2. 檔名輸入ex:20060211_250m MODIS影像轉檔(*.hdf → *.img) 選擇HDF Raster(Direct Read) 欲轉檔之影像*.hdf

  3. MODIS影像轉檔(*.hdf → *.img) 影像處理 轉檔完成

  4. MODIS影像幾何糾正 點選Viewer/開啟欲糾正之*.img

  5. MODIS影像幾何糾正

  6. MODIS影像幾何糾正 在欲校正的影像工具列中選取Raster/Geometric Correction(幾何校正)

  7. MODIS影像幾何糾正 Polynomial Order改為2 出現Set Geometric Model對話框,選擇其中的Polynomial(多項式)進行糾正 進行TM2投影座標設定

  8. MODIS影像幾何糾正 進行參數設定 將所設定之參數存檔以便日後使用

  9. MODIS影像幾何糾正 參考現有Viewer進行地面控制點選取 出現Viewer Selection Instructions警告視窗,此時在全台SPOT影像點1下,出現Reference Map Information視窗後按OK

  10. MODIS影像幾何糾正 螢幕會出現兩個小視窗,此為選擇地面控制點時之對應視窗

  11. MODIS影像幾何糾正 點選控制點圖示,進行幾何校正。 在選擇地面控制點前須在GCO Tool對話框中Point#點一下,進行第2點、第3點…的選取也須如此,這樣才不會對同一點進行重複標定

  12. MODIS影像幾何糾正 控制點選擇以明顯確定之邊界為原則,建議選取7個點以上(控制點選擇越多,校正影像精確)進行校正,RMS(均方根誤差)之值必須控制在1以下。 檔案處理 設定為原始影像之cell size

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