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? 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. 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.
