I2c tools failed

Viktor

I wrote mshutter to 0x41 for constant 25 fps, am i right?

Cause in low light i have high exposure.

night

veye_xumm

@viktor
This camera is fixed frame rate. You do not need to change the exposure time for that.
I suggest you use default parameters first, and change if necessary.

Please use videofmt for 25fps. It is 30fps by default.
http://wiki.veye.cc/index.php/VEYE-MIPI-290/327_i2c/zh#videoformat

Viktor

@veye_xumm Ok, I tryed wdmode, Pal and mshutter. And now it is good night picture.

Viktor

Hi Meng,

Can you explain what parameter makes that effect with multiple shadows on image?

alt text

veye_xumm

@viktor

Please try close wdr.
http://wiki.veye.cc/index.php/VEYE-MIPI-290/327_i2c/zh#wdrmode

Because WDR uses two frames of data at different time points to be merged into one frame.
If the exposure time is long and the vehicle is fast, there will be problems in your image.You can also try to reduce ghosting by reducing the exposure time without turning off WDR.

Viktor

Ok, and which parameter controls exposure in i2c?

Like on CS?

./cs_mipi_i2c.sh -w -f aetime -p1 XXX
range:(100,1/framerate]

veye_xumm

@viktor
The parameters of the veye series are not as flexible as those of the cs series, and the parameter you want is mshutter.

Viktor

Ok. Have tried mshutter, but shadows presents in all cases.

If i write mshutter 0x46( 1/1000 ) i expect very short exposure and more dark image. It is ok because we are using light at night.

But at daylight frame is over exposured. So works only 0x40 (auto shutter). Then at night we have this effect: http://forum.veye.cc/post/185

Here is only mshutter auto:

alt text

veye_xumm

@viktor said in I2c tools failed:

Have tried mshutter, but shadows presents in all cases.

Pls try close wdr as I suggested before.

Viktor

Wdr already closed.
May be i should restart system?

Pal i set before run programm.
But other controls can i set before too?

veye_xumm

@viktor

pls post your cmd to close wdr.
pls try close 3d denoise.

Viktor

This post is deleted!

Viktor

Here is cmd:
sudo ./veye_mipi_i2c.sh -w -f videoformat -p1 PAL
sudo ./veye_mipi_i2c.sh -w -f wdrmode -b 7 -p1 0x00
sudo ./veye_mipi_i2c.sh -w -f mshutter -b 7 -p1 0x40

alt text

So it is a daylight. Sensor has auto shutter mode, cars speed is slow because it is parking barrier.

Why is double image?

veye_xumm

@viktor said in I2c tools failed:
please add this one :
./veye_mipi_i2c.sh -w -f denoise -p1 x00 -b7

Viktor

Thanks. Looks like fixed.
alt text

veye_xumm

@viktor
OK. So 3D denoise is the key. You can try to have a low level 2d denoise.

Viktor

Thank you Meng.

veye_xumm

@viktor
You are welcome.