Libargus setWbGains do nothing

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
1

Hi,

Hardware TX2 l4t 32.2.1, imx577.

My code:

Argus::BayerTuple< float > wb{ iAutoControlSettings->getWbGains() };
        std::cout << "getWbGains: " << wb[ 0 ] << ", " << wb[ 1 ] << ", " << wb[ 2 ] << ", " << wb[ 3 ] << std::endl;
        wb[ 0 ] = 0.f;
        wb[ 1 ] = 0.f;
        wb[ 2 ] = 0.f;
        wb[ 3 ] = 0.f;
        iAutoControlSettings->setWbGains( wb );
        wb = { iAutoControlSettings->getWbGains() };
        std::cout << "getWbGains: " << wb[ 0 ] << ", " << wb[ 1 ] << ", " << wb[ 2 ] << ", " << wb[ 3 ] << std::endl;

Output:

getWbGains: 1, 1, 1, 1
getWbGains: 0, 0, 0, 0

But the picture has no effect.
Other settings work.

Please help.
Best regards, Viktor.

3

AWB may not direct observation. Have you try any others value?

4

Have tried:
getWbGains: 2, 0.5, 2, 0.5
But nothing.

5

Not sure, but you might have to set awblock to true in order to prevent auto WB adjustments.

6

Ae and awb locked cause i use manual settings.

7

If awb mode is manual (or off) and you’ve also disabled auto-exposure, set fixed gain and digital gain, I cannot help further !

8

Thank you. I wrote to LI. May be it is driver issue.
Will reply here.

10

Yes.
I should set awb to false, ae to true and awb_mode to manual.
Then RGGB gains works.

Thanks.

11

Hi

what is the min max for wbGains could be set. is 0.0 to 1.0 or 1.0 to 255.0 ?

I could not find min max range in LibArgus API Document… please help.

Thanks.

12

It’s 4 channel array of 0 - 255 for rggb channel value.
Have a reference to the tegra_multimedia_api sample code.

…/samples/userAutoWhiteBalance/main.cpp

1 Like
13

My case 2.3, 1, 1, 1.5
It is not normalized 0-1 values.

14

thank you ShaneCCC