【sarscape】使用envi idl 實作哨兵一号批量ComplexDataMultilooking

SARscape是強大的雷達影像處理軟體，其中影像導入、影像裁剪等基本常用功能都可以進行批量處理非常友善。但是其中的同軌道影像鑲嵌(Slant Range Mosaicing)功能，一次操作 隻能完成一個軌道同一時間段下的影像拼接，當需要批量處理時，多次的點選以及時間的把控就很不友善。

是以，參考SARscape IDL Scripting中的example以及IDL的Help文檔，實作哨兵一号的兩景影像批量鑲嵌。

1.資料準備

• 待多視的影像

  

2.實作過程

1. 準備.sml檔案

   在envi軟體中，sarscape/preference中設定好參數，然後儲存。

   

2. 打開ENVI+IDL

   

3. 建立檔案并重命名（建議名稱與3中PRO的名稱一緻）
4. 寫入代碼并按照注釋運作

;函數功能
;批量複數資料多視處理2:1
;使用方法
;0.編譯本pro檔案
;1.指令行初始化路徑參數
;the_input_dir = 'E:\SecondInsar\3.import\path55_01';#輸入影像路徑
;the_output_dir = 'E:\SecondInsar\8.idl';#輸出影像路徑
;the_suffix = 'VV';#影像二進制檔案名識别标志
;注意：SARscape_default_values_dataset_SENTINEL_TOPSAR.sml
;可以從envi/preference中儲存得到
;名稱要設定一緻
;要放在output_dir路徑下
;2.指令行運作
;IDLscript_batch_ComplexMultilooking, the_input_dir, the_output_dir, the_suffix

FUNCTION PATHPARSE,the_Path
  path = the_Path
  path = STRSPLIT(path,'\',/EXTRACT)
  path = path[-1]
  RETURN,path
END
pro  IDLscript_batch_ComplexMultilooking, the_input_dir, the_output_dir, the_suffix

  compile_opt idl2

  ; 判斷IDL是否成功啟動
  CATCH, error
  if error ne 0 then begin
    k = dialog_message(!error_state.msg,/ERROR)
    return
  endif
  
  ; 設定運作路徑
  if (N_ELEMENTS(the_input_dir) ne 0 and $
    N_ELEMENTS(the_output_dir) ne 0 and $
    N_ELEMENTS(the_suffix) ne 0) then begin
    theInputDir = the_input_dir
    theOutputDir = the_output_dir
    theSuffix = the_suffix
  endif else begin
    myResult = ROUTINE_INFO('IDLscript_batch_ComplexMultilooking', /SOURCE)
    PRINT, myResult
    theTestDir = FILE_DIRNAME(myResult.PATH) +PATH_SEP()+'data'
    Print,' ************************************************************* '
    Print,' Plz Set the Paths of InpurFiles Correctly!!! '
    Print,' ************************************************************* '
    SARscape_Batch_Exit
    return;
  endelse
  
  ; 設定臨時檔案路徑
  aTmp = theOutputDir+PATH_SEP()+'temp'
  FILE_MKDIR,aTmp

  ; 1) SARscape batch initialization and temporary directory setting
  SARscape_Batch_Init,Temp_Directory=aTmp
  
  ; 設定工作路徑
  aTemp = aTmp+PATH_SEP()+'step'
  aWorkDir = aTemp+PATH_SEP()+'work'
  FILE_MKDIR, aWorkDir
  
  ;4) Load the user-specific default file (i.e. SARscape_preferences_user.sml)  optional
  ; 将sarscape的preference的文本文檔内容替換.sml中的内容
  ; D:\Program Files\SARMAP SA\SARscape 5.2\auxiliary\description_files
  default_file_name = theOutputDir+PATH_SEP()+'SARscape_default_values_dataset_SENTINEL_TOPSAR.sml'
  aRet = SARscape_set_save_actual_default_in_dfl (default_file_name)

  IF aRet ne 'OK' THEN BEGIN
    Print,' ************************************************************* '
    Print,' File inconsistency ', default_file_name
    Print,' ************************************************************* '
    SARscape_Batch_Exit
    return;
  ENDIF
  ;5) set a working directory   optional
  if (SARscape_set_working_in_actual_default(aWorkDir) eq 'NotOK') then begin
    ok = dialog_message('You have to initialize a valid work directory' ,/ERROR)
    SARscape_Batch_Exit
    RETURN
  endif
  aActualStep =  0
  
  
  ; 3) 設定輸入參數
  inRasterName = FILE_SEARCH(theInputDir,'*'+theSuffix);
  ; 檢查檔案數量是否大于等于1
  if (inRasterName.length EQ 0) then begin
    myResult = ROUTINE_INFO('IDLscript_batch_ComplexMultilooking', /SOURCE)
    PRINT, myResult
    Print,' ************************************************************* '
    Print,' Numbers of InputFiles SHOULD larger than 0 !!!' 
    Print,' But Numbers of InputFiles is ' +  inRasterName.length
    Print,' ************************************************************* '
    SARscape_Batch_Exit
    return;
  endif else begin
    arr = [0: inRasterName.length-1]
  endelse
  
  ; 逐景多視
  foreach element,arr DO BEGIN
    ;檢查軌道号和日期是否對應
    input = inRasterName[element]
     
    ; 6) Create the Slant Range Mosaic object
    OB = obj_new('SARscapeBatch',Module='INSARCOMPLEXDATAMULTILOOKING')
    IF (~OBJ_VALID(OB)) THEN BEGIN
      ; The object is not valid then the user must manage the error
      ; Exit from SARscape batch
      SARscape_Batch_Exit
      return
    ENDIF
    ;7) Fill the Parameters
    OB->Setparam,'range_multilook', 2
    OB->Setparam,'input_file_name', input
    outRasterName = theOutputDir+PATH_SEP()+PATHPARSE(input);
    OB->Setparam,'output_file_name', outRasterName
    
    ;8) Verify the parameters
    ok = OB->VerifyParams(Silent=0)

    IF ~ok THEN BEGIN
      Print,' ************************************************************* '
      Print,' Module can not be executed; Some parameters need to be filled '
      Print,' ************************************************************* '
      ; Exit from SARscape batch
      SARscape_Batch_Exit
      return;
    ENDIF
    
    Print,' ************* '
    Print,'inputFile is  '+ input
    Print,'MultilookingFile is  '+ outRasterName       
    Print,' ************* '
    
    ;9) Process execution
    OK = OB->Execute();

    IF OK THEN BEGIN
      Print,' ************* '
      Print,'STEP  Success...... '
      Print,' ************* '
    ENDIF else begin
      aErrCode = ''
      ; extract the error message from error file
      aOutMsg = get_SARscape_error_string('NotOK',ERROR_CODE=aErrCode)
      aOutMsg = get_SARscape_error_string('OK',ERROR_CODE=aErrCode)
      Print,' ************* '
      Print,'STEP  FAIL...... '
      Print, 'ERROR CODE : '+aErrCode
      Print, aOutMsg
      Print,' ************* '
    ENDELSE
  endforeach
  Print,' ************* All Tasks Success ************* '
  ; 10)Exit from batch procedure
  SARscape_Batch_Exit
end

           

3. 成功運作結果