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OMI 2.3.1 Release Notes

OMI 2.3.1 Release Notes 41

Image and Mask Editor

The Edit Mask button in the Mask Object dialog box now opens the Cognex Image and

Mask Editor. In earlier releases, the Edit Mask button opened the Paint program

supplied with Windows.

The Cognex Image and Mask Editor enables users to view and edit a mask "in place" on

top of the image being masked. When opened from the Mask Object dialog box, the

editor is automatically initialized with the mask values appropriate for the vision object

using the mask.

Masks that are children of CNLSModel and PMTool objects have a palette of Care and

Don’t Care pixel values that can be set as the foreground and background colors for

drawing. Masks used by PMPattern objects have a palette that includes Care, Don’t

Care But Score, and Don’t Care and Don’t Score pixel values.

Note The Image and Mask Editor must be opened from the Mask dialog

box to create masks that OMI objects can use. If you run the editor

as a standalone application, OMI cannot use the masks you create.

The introduction of the Image and Mask Editor changes the interface of the Mask object.

Because the editor works with both an underlying image and the mask image, the Mask

object interface now refers both to an "original image" (the image being masked) and to

the mask image. Refer to the documentation of the Mask object dialog box and API in

the OMI Object Reference for additional information. A new Deprecated Functions

section contains a list of API changes.

Visual Basic Notes

Strings Returned by Functions Must be Allocated

When an OMI function takes a string as input, such as to supply a file name, the string

may be declared like this:

Dim InputString As String

If an OMI function returns a value as a string, such as AcuBc_GetString() and other

functions, the string declaration must allocated enough storage for the expected string,

like this:

Dim OutputString As String * 20

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Pulnix TM-7EX Informations techniques Page 41