• State Answer Suggested
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 98 subscribers
  • Views 255 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DM355: Help with IPIPE in Frame Division Mode - V

Nathan Boyd
Prodigy 10 points

Hi All,

Does anyone have any further information regarding frame division mode v on the DM355 IPIPE?

I have successfully used the IPIPE to  process a 5MP raw (Bayer) image in two passes to generate a YCbCr image while resizing to several fixed resolutions, but now I need to use frame division mode V to support other output resolutions to avoid alignment and filtering issues when the split point is not well aligned on the output image (i.e. not on a 32 byte boundary).

I had a look at Figure 74 of spruf71A.pdf (the DM355 VPFE manual), and made some sense of it (after sorting out all ommissions, typos and such), but I am left with a couple of questions:

    - Where is x0 defined? I see that X0 is defined in terms of x0, but I don't see x0 specified (or explained) anywhere.

    - What is the correct order of operations for the calculation of h_initial_phase for the right hand side? Is it ((X0 * d) - (x1 * 256))? I'm sure it would be easy to try it and see, but I can't until I know where x0 is from.

 

Thanks,

 

Nathan