User`s guide

8 Test Suite for Adaptor Writers
8-8
Supporting ROIs Test Procedure
As part of the Image Acquisition Toolbox Adaptor Kit, we now offer a test procedure and
automated tests for third-party adaptor developers and camera vendors to test adaptors
and hardware against the toolbox. This test procedure is part of that suite. For more
information, see “Testing Adaptors or Hardware” on page 8-2.
After implementing ROIs per instructions in “Supporting ROIs” in this Adaptor Kit
documentation, follow these steps to test region of interest (ROI).
Test Procedures Expected Results
Run the following commands:
vidObj = videoinput
('AdaptorName');
vidObj.ROIPosition =
[xoffset yoffset x y];
frame = getsnapshot(vidObj);
size(frame);
image(frame);
where
xoffset: integer value that
defines x offset
yoffset: integer value that
defines y offset
x: new width
y: new height
For example, if the original
VideoResolution is [640 480], then
define the new ROIPosition as follows:
vidObj.ROIPosition =
[100 100 320 240]
The output of size(frame) should display
the new ROI, for example [320 240]. The
displayed image should exhibit part of the
full image that is expected for an ROI of [100
100 320 240].
To clean up after this step, delete and clear
the object.