I have a design project to analyze road traffic. We have to use image processing which includes using a CCD camera. But the camera comes with BNC output, a Panasonic WV CP-240.
Now since the PCs don't come with ready-made BNC input, we have to design our own. Buying might be too expensive, as we have limited budget of about 800.00 South African Rands(approx US $95.00).
So I need ideas on how I can design the this BNC to VGA converter. Or any best ideas that would work for me.
You buy one, they are available at VERY reasonable cost (for security camera use) - to build one would cost a great deal more, and be an immense project (as it's essentially a TV standards converter).
To give you an idea of complexity, have a look at:
Yeah, you are right, the circuits do look a great deal. Plus this is not the amin objective of this particular design project.
But since I need it to get the system working, I will have to see how I sort this out. I'm wailting for a response
from one of my reliable forums. In the meantime, i'll get ready to spend on that converter.
Yes thats correct, however I've done this on a few tv's, only older ones tend to get upset, tv's became more tolerant of sync signals when home computers became popular.
So long as the frame rate can be adjusted to somewhere in the ball park, you can get a picture, the other thing is that vga isnt interlaced so you either need a graphics card that can output interlaced or a telly that has pal/ntsc compatability, if you live in the uk that is.
I will take your comments into consideration when going to buy the adapter.
And I will definitely come up with the best choice, courtesy of you, Nigel Goodwin .
I have not decided completely, I still have about 2 to 3 weeks to do so.
As am now concentrating on reading about the project.
The project is: Road Traffic Monitoring. I think the name is self-explanatory.
Will keep comments coming on decisions and progress, just in case.
If you're using a PC with a video input card you don't need a BNC/VGA converter (which would be useless in that case) and the frame grabbing is done on the PC as part of the software with the input card.
We did find a matrox frame-grabber which we can use i the project.
Now we are working on writing a code that would be able to display the frames.
This is just a once off project and we wouldn't want to spend much on it.