DM355 Edge Enhancement

Brad Griffis

Do we have a set of coefficients and corresponding lookup table that can be shared as a baseline for the edge enhancement module?

Please do not tell me to get the NDA VPFE Guide. There are no example coefficients or lookup table int he VPFE guide.

over 14 years ago

0 Marcus Cooksey over 14 years ago

TI__Genius 9510 points

Such coefficients don't exist (according to Xiangdong Fu and Gang). Gang only has coefficents for DM36x.

0 Brad Griffis over 14 years ago in reply to Marcus Cooksey

TI__Guru*** 125430 points

How about the lookup table? Although the filter appears to be a different order between the DM35x and DM36x, the lookup table appears to be more or less the same. The formatting of the table itself looks like it is slightly different, but I believe the content should be the same.

0 star zhou over 14 years ago in reply to Brad Griffis

Intellectual 390 points

We use the HPF's coeffecient and table of Dm368 from do_preview_resize.c, but we find the edge enhancer have a very small effect comparing with DM355, maye we use the HPF's coffecient and table of Dm36x uncorrectly. How can we obtain a very suitable HPF's coffecient and table for Dm368, Thank you very much ! zhou

0 Gang Hua over 14 years ago in reply to star zhou

TI__Guru 59280 points

On dm36x, you can use this one and vary the number of right shifts.

-2, -6, -10, -6, -2

-6, 0, 12, 0, -6

-10, 12, 48, 12, -10

-6, 0, 12, 0, -6

-2, -6, -10, -6, -2

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DM355 Edge Enhancement