Image Processing l Some operations require a constant as a second operation. This constant must be defined in the Advanced Parameters section of the tool interface. l The Operand Image must be set to None (displays as an empty field) if a constant must be applied as an operand. Otherwise any selected Operand Image will override the selected constant. Modes of Operation The selected Operation corresponds to the process that will be applied to the input image by the Image Processing Tool. Each Image Processing Tool can apply a single operation.
Once an operation is selected, parameters related to the operation such as clipping, scale, con- stant (operand), and others, must be configured in the Properties section. This section will change its label depending on the type of properties (logical, filtering, etc.). The following table provides a list and short description of the available operations. For more information on a specific operation, see the Configuring Image Processing Properties on page 508 section.
List of Available Operations ACEUser's Guide, 3.6.x, 18316-000 Rev A Page 505 Object Definition Arithmetic Properties Arithmetic Addition Operand value (constant or Operand Image pixel) is added to the corresponding pixel in the input image. Arithmetic Subtraction Operand value (constant or Operand Image pixel) is subtracted from the corresponding pixel in the input image. Arithmetic Multiplication The input image pixel value is multiplied by the Operand value (constant or corresponding Oper- and Image pixel). Arithmetic Division The input image pixel value is divided by the Oper- and value (constant or corresponding Operand image pixel).
The result is scaled and clipped, and finally written to the output image. Arithmetic Lightest The Operand value (constant or Operand Image pixel) and corresponding pixel in the input image are compared to find the maximal value. Arithmetic Darkest The Operand value (constant or Operand Image pixel) and corresponding pixel in the input image are compared to find the minimal value.