[sane-devel] Sane backend for an intraoral X ray camera

[Ralph Little]

Hi,

On 2020-12-13 7:59 a.m., Mayuresh wrote:
> On Sun, Dec 13, 2020 at 09:39:03AM -0500, m. allan noah wrote:
>> I think you have far more work to do than you realize.The first step
>> would be to get some usb logs of the scanner in action using wireshark
>> on windows. Someone here may recognize the image format or protocol.
> Yes, I have those with wireshark as well as usbmon (attached). These are
> prior to actually getting the image (which requires going to a dental
> clinic to get the device exposed to x ray, so might take some time).
>
> For wireshark following filter selects the device:
>
> usb.bus_id == 1 and usb.device_address == 6
>
> usbmon has a limitation that it won't show more than 32 bytes per event.
>
> I am baffled by the difference in end-point numbers shown by wireshark and
> usbmon. Those in usbmon match with lsusb, those in wireshark don't.
>
It is a long shot, but you could ask the manufacturer for protocol
information.
They mostly ignore requests of this kind or give some b*llshit excuse,
but it you don't try, you don't know.

Cheers,
Ralph