On Sun, Jan 5, 2014 at 11:55 AM, Michal Suchanek <[email protected]> wrote:
> On 5 January 2014 17:48, [email protected] <[email protected]> wrote: > > > > > > > > On Sun, Jan 5, 2014 at 11:43 AM, Michal Suchanek <[email protected]> > wrote: > >> > >> > >> > >> > >> On 5 January 2014 16:50, [email protected] <[email protected]> wrote: > >> > >>> > >>> > >>> > >>> On Sun, Jan 5, 2014 at 5:38 AM, Michal Suchanek <[email protected]> > >>> wrote: > >>>> > >>>> AFAIK the camera board is connected digitally so the noise is > something > >>>> that is internal to the camera board. > >>>> > >>>> It is normal that under low light condition the image is noisy. Did > you > >>>> try taking pictures in full daylight or using some photography > lighting? > >>> > >>> > >>> I have four other USB webcams and none of them have this noise under > same > >>> lighting conditions. I have two other Allwinner systems with cameras > and > >>> they all have noise. I checked it out this morning under sunlight. It > is > >>> better but the noise is still there. > >>> > >>> Maybe the camera images need some image processing that is not getting > >>> turned on under the Allwinner platform? All of the Allwinner devices > appear > >>> to be running Allwinner SDK with only minor changes. They probably all > >>> copied each other. > >>> > >>> The datasheet for the image sensor is here: > >>> http://files.virt2real.ru/docs/ > >>> > >>> It is also possible that image processing features of the sensor chip > are > >>> not properly enabled. > >>> > >> > >> According to the datasheet the camera chip has various image processing > >> filters including noise reduction. Does the driver support tuning these > >> filters? > > > > > > I can modify driver. But that triggers the whole problem of being able to > > rebuild the software for these devices. I'm trying to figure out how to > > extract the fex files. They are STBs and don't have normal Android > buttons. > > Meaning not even a FEL button? > > No OTG USB port. They put a hub chip on the board and only exposed host port. > Do you get access to the boot partition with adb? > > The other way would be to run a non-broken Linux system from SD card. > Getting at least serial or ethernet should be easy if the box has > those. Or an USB Ethernet. > It has Ethernet. I'm trying to figure it out, I haven't used Android SDK with Ethernet before. > > Thanks > > Michal > > -- > You received this message because you are subscribed to the Google Groups > "linux-sunxi" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- Jon Smirl [email protected] -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
