GigE Camera: focus and zoom control?

Hi all

How can I change the settings like zoon, focus, etc... real time in my application labwindows?

something like: Sendparameters.execute (zoom, focus, cam1);

Thank you for all.


If your camera manual does not list the attributes available for your camera, you can ask a list.

What follows is taken from KnowledgeBase OR call: get programmatically and set attributes with IMAQdx vs IMAQ for IEEE 1394.

Use the IMAQdxGetAttribute call to obtain a specific attribute value or the function parameter. If you do not know the exact name or the value of an attribute, you can call IMAQdxEnumerateAttributes2 and IMAQdxEnumerateAttributeValues to return these data.

If you do not know in advance the number of values of attributes that are available, you can get this information by following these steps:

  1. Call him IMAQdxEnumerateAttributes2 function with the attributeInformationArray set to NULL parameter. The required size is then stored in count.
  2. Divide County with the given size.
  3. Call this function using the previously allocated table

You can do the same steps for IMAQdxEnumerateAttributeValues by setting the parameter list with NULL value, which stores the necessary size in size.  For more information about the use of these functions and other IMAQdx for textual languages, please see the NOR-IMAQdx function reference help to found in Instruments\NI-IMAQdx\Docs national virtue.

Once you find the attribute to set, you can use IMAQdxSetAttribute() to control your zoom and focus functions.

Tags: NI Software

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