Machine Vision
Mightex Camera video/image settings using Grab with property page.vi
Hi Suneel,
The BCG Lookup example is meant to demonstrate how you can use the IMAQ BCGLookup VI to manipulate an image that is in an image buffer. This VI will work with any image buffer, whether an image in the buffer came from a file on disk or directly from a camera.
To use this VI with the images you are acquiring from your USB camera, you simply to wire your image buffer into the Image Src and Image Dst inputs of the VI. Here is a screenshot of how you could incorporate this VI into the Grab with Property Page example:
Please keep in mind that performing image processing like this in line with your acquisition may limit the rate at which you can acquire from your USB camera. If it's possible to adjust the brightness and other properties by changing the configuration of the acquisition, instead of acquiring the image and then manipulating it as we are doing in this case, then that would be ideal.
You may also considering performing your acquisition, saving the images to an AVI file or a series of image files, then reloading those images and adjusting the brightness, etc. in post-processing. This will decouple your acquisition from your processing, so that your acquisition will not be limited in any way.
I hope this helps.
Rishee B.
Applications Engineer
National Instruments
Message Edited by risheeb on 04-02-2008 11:01 AM
Message Edited by risheeb on 04-02-2008 11:02 AM
The BCG Lookup example is meant to demonstrate how you can use the IMAQ BCGLookup VI to manipulate an image that is in an image buffer. This VI will work with any image buffer, whether an image in the buffer came from a file on disk or directly from a camera.
To use this VI with the images you are acquiring from your USB camera, you simply to wire your image buffer into the Image Src and Image Dst inputs of the VI. Here is a screenshot of how you could incorporate this VI into the Grab with Property Page example:
Please keep in mind that performing image processing like this in line with your acquisition may limit the rate at which you can acquire from your USB camera. If it's possible to adjust the brightness and other properties by changing the configuration of the acquisition, instead of acquiring the image and then manipulating it as we are doing in this case, then that would be ideal.
You may also considering performing your acquisition, saving the images to an AVI file or a series of image files, then reloading those images and adjusting the brightness, etc. in post-processing. This will decouple your acquisition from your processing, so that your acquisition will not be limited in any way.
I hope this helps.
Rishee B.
Applications Engineer
National Instruments
Message Edited by risheeb on 04-02-2008 11:01 AM
Message Edited by risheeb on 04-02-2008 11:02 AM
