Hi,
Many thanks for your reply
My problem is that
i am getting blurred lines around the edges in real
time display(Image attached).I suspect that this is
interlace problem.To solve this i am capturing\display
on field basis and keeping tje fields separate.
But i am getting half the image,i am not sure
whether
this is the correct way of doing this.Moreover if we
capture/display only one field frame rate will also
increase.
Is there any TI document or link which suggests
when we have to use field capture/display or frame.
Further if we make field capture/display if we have to
make changes in other parameters(Blanking
interval,hor/ vert offset) also or they should
remain the same.
Thanks for your cooperation.
Best Regards,
Mayank
--- Tal Avidor <avidor@avid...> wrote:
> HI,
>
> From what I understand the problem you have is that
> the fields are
> reversed.
>
> In order to fix this you can tell the video port
> driver to inverse the
> fields by changing the fldInv to enable or
> disable. Make sore that
> extCtl is enabled (in this mode the video port will
> sync on embedded
> EAV/SAV codes and not HCTL/VCTL/FID signals).
>
> In regards to the fldOp parameter, when set to
> VPORT_FLDOP_FRAME the
> video port will capture/display a frame (that is
> field 1 and field 2)
> that is interlaced in memory.
>
> When set to VPORT_FLDOP_FLD1/VPORT_FLDOP_FLD2 then
> the video port
> driver will capture/display only one field.
>
> When set to VPORT_FLDOP_PROGRESSIVE it will
> capture/display a frame
> that is in progressive mode in memory.
>
> Now the separate or merged parameter instructs the
> driver how to
> copy/read the image from/to the memory. In separate
> mode a frame will
> be splited to two memory address one for the odd
> field and one for the
> even field. In merge mode the fram will have one
> address in memory.
>
> --- mayank agarwal <may_ank77@may_...> wrote:
> >
> >
> > Hi all,
> > i have scaled the CIF image to 4CIF size but when
> i am
> > catching the video through camera and displaying
> it in
> > real time video i am getting lines around the
> finger
> > (interlace problem).I am using MPEG-4 simple
> profile
> > as video algorithm on DM642 platform.
> > Video capture and display is made possible on
> > DM642 platform is made possible by using generic
> part
> > (saa7115 decoder for capture and saa7105 encoder
> for
> > display)and the board specific part (vport library
> and
> > the edma which is used to transfer data to and
> from
> > video ports).I have the following doubts:
> >
> > 1.Is it possible to deinterlace the video before
> > capture by making changes in video capture and
> video
> > display parameters file(One parameter is to
> capture
> > and display video by
> frame/field1/field2/progressive
> > mode) and another parameter is whether to keep the
> > fields separate or merged.I could not understand
> the
> > meaning of these parameters(no reasonable
> explanation
> > in SPRU629E).If we can solve the interlace problem
> by
> > changing these parameters or we have to make
> changes
> > elsewhere.
> >
> > 2.If at all there is no solution given by TI to
> solve
> > above problemby making changes in video capture
> and
> > display parameters file then if we have to modify
> > the vport library which ontrols the saa7115
> capture.
> >
> > Any hints /suggestions are welcome.
> > Many thanks for cooperation.
> > Regards,
> > Mayank
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > __________________________________________________
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > c6x-unsubscribe@c6x-...
> >
> >
> >
> >
> >
> >
>
> Tal Avidor Unisor LTD
>
> __________________________________________________
>
>
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