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Altera_Forum
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16 years ago

help needed : upscaling video

Hi, I am using altera VIP suit , ver 8.0 and Quartus II ver 8.0. And using 3c120 development board. In the current design, i need to upscale the video from 720x576 PAL to minimum 800x600...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Hello,

Quoting the VIP user guide, scaling up with any input/output resolution:

4 taps, 16 phase

Precision: Signed, 1 integer bit, 7 fraction bits

Coefs: Lanczos-2, or Bicubic

I believe you should stick to these recommendations. In practice it usually looks worse when using more than 4 taps for upscaling.

I assume you are using the motion-adaptive deinterlacer before the scaler. If not and if the quality is not as good as expected you should probably start from there.

Kind regards,

vgs