Image Processing a constant. The basic elements of an operation are shown in the following figure. Fur- thermore, some operations involve other parameters such as clipping, scaling, and filters. Such parameters are discussed under the category of operation to which they apply. Basic Elements of an Image Processing Operation Input Image An Input image is required as the first operand. The only type of operation that does not require an Input Image is an Assignment operation. Operation The available operations are described in greater detail under the following sections:
Arith- metic Operations , Assignment Operations , Transform Operations , Logical Operations , Fil- tering Operations , Morphological Operations , and Histogram Operations . Operand Operations that require a second operand can use either an Operand image or a constant. Operand Image An Operand Image is used by an operation that acts on two images. If an Oper- and image is specified it will override the use of the constant specified for the operation. l The Image Processing Tool applies logical and arithmetic operators, first to the Input image, secondly to the Operand image. l The Image Processing Tool can accept unsigned 8-bit, signed 16-bit ,and signed 32-bit images as an Operand image.
Constant Any constant value specified for an operation will be overridden by an Operand image that has been defined for the operation. ACEUser's Guide, 3.6.x, 18316-000 Rev A Page 509