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Hi,
The error about matrices is only remotely connected with the synchronization signals.
Basically, to design for an FPGA you no longer think about processing the entire video frame,
but instead break the frame into single pixels that you send to the FPGA. At that point,
the synchronization signals are required for you to know where in the frame you are.
In other words, given a single pixel, and no other information, you will have no idea where
in space and time is this pixel located. Therefore, you'll require synchronization signals.
The best way to learn more about this is to actually try it. I'd suggest that you attempt
to make a design and put it onto an FPGA.
Witek
Mira Ab <a_m_i_r_a_h_109@hotmail.com> wrote:
> Hi
>
> So the error 'matrices is not in the release' will be solved once we get the synchronization signals from the video? To get the signals we have to design in similarly to the demo? Sorry but I don't understand what is the demo talking about. Can you please explain in detailed? Thanks.
>
> Mira
>
>
>
>
> witek@mathworks.com wrote in message <i7q0nc$s7m$1@fred.mathworks.com>...
> > Hi,
> >
> > The demo is available since 10a release. Yes, the synchronization signals are meant to be
> > part of your actual hardware design.
> >
> > Witek
> >
> >
> > yeo <tmrnvrcome@hotmail.com> wrote:
> > > Hi
> > >
> > > If I use the synchronisation signals, is it possible to convert them to hdl?
> > > And I have read through the demo, however I still do not understand it.
> > > Is the demo available in Matlab 2009B?? I don't seem to be able to find it.
> > >
> > > Thanks.
> > >
> > > witek@mathworks.com wrote in message <i7d9lf$gv1$1@fred.mathworks.com>...
> > > > Hi,
> > > >
> > > > Going over what it takes to create such an interface is a long topic that's not quite
> > > > appropriate for a newsgroup exchange. You may get a glance of what is involved by
> > > > studying this demo:
> > > >
> > > > http://www.mathworks.com/products/demos/shipping/vipblks/viponfpga.html?product=VP
> > > >
> > > > In particular, see the reference to TVP5146 digital video decoder. It has synchronization
> > > > signals. They would change for your problem. How would you then hook them up to your
> > > > design?
> > > >
> > > > HTH,
> > > >
> > > > Witek
> > > >
> > > >
> > > > yeo <tmrnvrcome@hotmail.com> wrote:
> > > > > Hi
> > > > >
> > > > > Can you please elaborate? Sorry, but I am just a beginner on Simulink and Xilinx.
> > > > >
> > > > > How do I derive the synchronisation signals?
> > > > >
> > > > > And do you mean there is no Simulink blocks to connect with the camera on the embedded device to receive real time?
> > > > >
> > > > > witek@mathworks.com wrote in message <i7crjg$q0i$1@fred.mathworks.com>...
> > > > > > To interface to an ethernet camera, you'll need to derive the synchronization signals from the packet
> > > > > > stream from your camera. Simulink does not have anything that's pre-made and ready to use for this
> > > > > > purpose. You'll need to design it yourself.
> > > > > >
> > > > > > Witek
> > > > > >
> > > > > >
> > > > > > yeo <tmrnvrcome@hotmail.com> wrote:
> > > > > > > What if the video is to be displayed in real time using the ethernet camera from an embedded board? What are the signals to be input into Simulink using Simulink blocks ?
> > > > > > > Or is there any other way?
> > > > > > >
> > > > > > > witek@mathworks.com wrote in message <i5tg4f$64r$1@fred.mathworks.com>...
> > > > > > > > Hi Mira,
> > > > > > > >
> > > > > > > > Getting to HDL with video is indeed non-trivial. Video and Image Processing Blockset includes a demo
> > > > > > > > that shows how to stream the pixels. It also inludes a design of a 2-D FIR filter that generates
> > > > > > > > HDL. It's designed from the ground up using elemental blocks and EML. It generates HDL automatically.
> > > > > > > >
> > > > > > > > http://www.mathworks.com/products/demos/shipping/vipblks/viponfpga.html?product=VP
> > > > > > > >
> > > > > > > > The demo gives you a head start and ideas, but it certainly does not solve your problem for you.
> > > > > > > >
> > > > > > > > Translate block can be moved to HDL, but you'll indeed need to redesign it in a similar fashion as
> > > > > > > > the block in the demo.
> > > > > > > >
> > > > > > > > The From Video Device block is a whole different matter. Your hardware board better have some
> > > > > > > > support for video. If it does, then your HW frame grabber "becomes" the From Video Device.
> > > > > > > > Alternatively, you may use some other peripheral such as gigabit ethernet to deliver video data
> > > > > > > > to your FPGA.
> > > > > > > >
> > > > > > > > HTH,
> > > > > > > >
> > > > > > > > Witek
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > Mira Ab <a_m_i_r_a_h_109@hotmail.com> wrote:
> > > > > > > > > "Sean " <sanborne@fastmail.fm> wrote in message <i5oa64$qv$1@fred.mathworks.com>...
> > > > > > > > > > "Mira Ab" <a_m_i_r_a_h_109@hotmail.com> wrote in message <i5hri1$11m$1@fred.mathworks.com>...
> > > > > > > > > > > Hi
> > > > > > > > > > >
> > > > > > > > > > > I have a problem when generating HDL for my set of Simulink codes. I got a error stating that 'matrices are not in this release'. Do anyone know about this problem?
> > > > > > > > > > >
> > > > > > > > > > > Can anyone tell me whether I can generate a from video device block and translate block?
> > > > > > > > > > >
> > > > > > > > > > > Thanks
> > > > > > > > > >
> > > > > > > > > > You have a lot of work to do. As the error message says, because matrices are not supported, you will need to stream the data a pixel at a time. If I remember correctly (I do not currently have access to the HDL coder), you should be able to use either one or two dimensional signals within an embedded Matlab block. But it would be a lot of work to stream the data in and out of embedded Matlab, and perhaps not worth the effort.
> > > > > > > > > >
> > > > > > > > > > You might be better off either hand coding your algorithms in HDL and using Matlab as a testbench.
> > > > > > > > > >
> > > > > > > > > > Sean
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > Hi
> > > > > > > > > I don't quite understand what do you mean by stream the data a pixel at a time. Does this mean that I will have to change my codes? Would you mind giving me some hints on ways of changing it?
> > > > > > > > >
> > > > > > > > > Thanks
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