NIST/fingerprint/__init__.py

@@ -143,20 +143,30 @@ class NISTf( NIST_traditional ):
         if 4 in ntypes:
             for idc in self.get_idc( 4 ):
                 #    4.005
-                #        The minimum scanning resolution was defined in
-                #        ANSI/NIST- ITL 1-2007 as "19.69 ppmm plus or minus 0.20
-                #        ppmm (500 ppi plus or minus 5 ppi)." Therefore, if the
-                #        image scanning resolution corresponds to the Appendix F
-                #        certification level (See Table 14 Class resolution with
-                #        defined tolerance), a 0 shall be entered in this field.
-                #        
-                #        If the resolution of the Type-04 is in 500DPI +- 1%,
-                #        then the 4.005 then field is set to 0, otherwise 1.
+                #        The mandatory ISR field relates to the scanning
+                #        resolution of this image. Previous versions of this
+                #        standard stated that 0 in this field represents the
+                #        'minimum scanning resolution.' The minimum scanning
+                #        resolution was defined in ANSI/NIST-ITL 1-2007 as
+                #        "19.69 ppmm plus or minus 0.20 ppmm (500 ppi plus or
+                #        minus 5 ppi)." Therefore, if the image scanning
+                #        resolution corresponds to the Appendix F certification
+                #        level (See Table 14 Class resolution with defined
+                #        tolerance), a 0 shall be entered in this field. A
+                #        value of 1 is entered if the actual scanning
+                #        resolution (outside of the Appendix F certification
+                #        range) is specified in Field 1.011 Native scanning
+                #        resolution / NSR.
+                
                 debug.debug( "Set the conformity with the Appendix F certification level for Type-04 image", 1 )
-                if 19.49 < float( self.get_field( "1.011" ) ) < 19.89:
+                if not self.has_tag( "1.011" ):
                     self.set_field( "4.005", "0", idc )
+                    
                 else:
-                    self.set_field( "4.005", "1", idc )
+                    if 19.49 < float( self.get_field( "1.011" ) ) < 19.89:
+                        self.set_field( "4.005", "0", idc )
+                    else:
+                        self.set_field( "4.005", "1", idc )
          
         #    Type-09
         if 9 in ntypes: