Overlay Color Text on a Black and White picture

[puradchi]

I have a black and white camera connected to my CVS (1455) and out put to a vga monitor. Time to time I need to overlay a "Red Color" text. Since my camera is black and white I have selected "Grey" color pallete. With the grey Color Pallete I couldn't display text in color. If i select any other color pallete my picture get different color. Is there any way to modify the grey color pallete to include the text color?
Bottom line I need to Keep the picture in grey scale and I need to show the text in One Color.

thanks

[MikeeB]

Hi Puradchi

To do this you must set the video mode of your CVS. There is a VI to do this in the IMAQ RT Pallette. The VI is IMAQ Video Out Display Mode. You can then set the resolution, refresh rate and most importantly to you the bit depth of the display. This does not affect the display of your image as the image is still in its greyscale (U8) format. I have included an example VI for you.

Hope that helps
Mike

[puradchi]

Mike,

I didn't get the attached exaple. Can you please re attach again.

thanks

[MikeeB]

Hi

Here it is

Mike

[puradchi]

Mark,

Thank you. It worked. I set the Color depth to 16 bit and its working.

Do you know how can i make the font size bigger. I don't what the available fonts in CVS?

Regards,
Puradchi

[MikeeB]

Hi

There is only one font available on the CVS and no way to download new ones to it. If there are only a couple of words that you need then create them as bitmaps and use the overlay bitmap function to display them. I have used this in the past for Company logos and pass fail indication.

Mike