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

Sun Dec 13 15:59:36 GMT 2020

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.

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ffff9b06ebff3840 1496354627 S Ci:1:006:0 s 80 06 0100 0000 0012 18 <
ffff9b06ebff3840 1496354806 C Ci:1:006:0 0 18 = 12010002 ffffff40 2b080a10 00000102 0301
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ffff9b06ebff3840 1496355001 C Ci:1:006:0 0 9 = 09022e00 010105a0 64
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ffff9b06ebff3840 1496355072 C Ci:1:006:0 0 46 = 09022e00 010105a0 64090400 0004ff00 00060705 81034000 04070582 02000201
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ffff9b06ebff3840 1496355128 C Ci:1:006:0 0 4 = 04030904
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ffff9b06ebff3840 1496355194 C Ci:1:006:0 0 28 = 1c035200 56004700 20003500 32003000 30002f00 36003200 30003000
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ffff9b06ebff3840 1496355262 C Ci:1:006:0 0 14 = 0e035400 72006f00 70006800 7900
ffff9b06ebff3840 1496355272 S Ci:1:006:0 s 80 06 0303 0409 00ff 255 <
ffff9b06ebff3840 1496355329 C Ci:1:006:0 0 22 = 16035200 56004700 35007800 36007800 20002000 2000
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ffff9b06ebff3840 1496357542 S Ci:1:006:0 s 80 06 0305 0409 00ff 255 <
ffff9b06ebff3840 1496357609 C Ci:1:006:0 0 22 = 16036800 69006700 68002000 73007000 65006500 6400
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ffff9b06ebff3840 1496357761 C Ci:1:006:0 0 10 = 0a034200 75006c00 6b00
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ffff9b06f96a3a80 1496703390 C Ci:1:006:0 0 18 = 12010002 ffffff40 2b080a10 00000102 0301
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ffff9b06f96a3a80 1496703592 C Ci:1:006:0 0 9 = 09022e00 010105a0 64
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ffff9b06ebff3480 1496804267 C Ci:1:006:0 0 46 = 09022e00 010105a0 64090400 0004ff00 00060705 81034000 04070582 02000201
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ffff9b06ebff3480 1497538805 C Ci:1:006:0 0 22 = 16035200 56004700 35007800 36007800 20002000 2000
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ffff9b06ea268180 1497661911 C Ci:1:006:0 0 4 = 04030904
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ffff9b06ea268240 1497676273 C Ci:1:006:0 0 4 = 04030904
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ffff9b06ea268240 1498683680 C Ci:1:006:0 0 10 = 30322f31 302f3230 3135
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ffff9b06ea268240 1498694093 C Ci:1:006:0 0 1 = 00
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ffff9b06f96a3600 1498733468 C Ci:1:006:0 0 1 = 01
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