TDA4AL-Q1: low contrast area can't be sharpened by EE module

Hi Taylar,

Taylar Huang said:

We find picture with low contrast portion can't be sharpened.

Do you mean low contrast edges cannot be sharpened?

EE has to be able to detect the edge first before sharpening.
If you lower the detection threshold to include low contrast edges, you may suffer more from amplifying noise.

Hi Gang Hua,

Do you mean this one? Is there any other threshold about detection threshold?

0, // threshold_before_lut

Taylar Huang said:

Do you mean this one?

That is one for EE.

Taylar Huang said:

Is there any other threshold about detection threshold?

For ES, there is "edge_sharpener_hpf_low_thresh".

May I know the different usage of edge_sharpener_hpf_low_thresh and edge_sharpener_hpf_high_thresh?

Hi Taylar,

Taylar Huang said:

May I know the different usage of edge_sharpener_hpf_low_thresh and edge_sharpener_hpf_high_thresh?

Please refer to "6.7.3.7.1.2 Edge Sharpener Filter" in TDA4AL TRM (www.ti.com/.../spruj28).

You may also take a look at the plugin guide and GUI for EE in tuning tool.