What is the difference between ROI and ACQWINDOW in terms of camera attributes?

[sunspotzsz]

There are two set of attributes to get left, top, width and heights.

For example, there are

IMG_ATTR_ROI_WIDTH vs IMG_ATTR_ACQWINDOW_WIDTH

MG_ATTR_ROI_HEIGHT vs IMG_ATTR_ACQWINDOW_HEIGHT

What are the difference between ROI and ACQWINDOW?

Thanks.

[Kristen_K. · Accepted solution]

Hi sunspotzsz!

Vision is broken down into two main steps: acquisition and image processing.  IMG_ATTR_ACQWINDOW_WIDTH would fall under the acquisition, and IMG_ATTR_ROI_WIDTH would be part of processing.  Therefore, if you set the ACQWINDOW_WIDTH to be 100 then the number pixels across that are acquired will be set to 100 and they will be stored in a buffer.  ROI_WIDTH will use an image that is already in memory and "zoom" in so that the only part of the image you are looking at/processing.  

Also, take a look at this KnowledgeBase about ROIs:  ROI FAQ's You may find it helpful!

Kristen H.

Message Edited by Kristen H. on 03-02-2009 02:49 PM

[sunspotzsz]

Thanks Kristen.  That explains my doubt.