Reverse camera calibration values - Leon ST estate 2019 facelift

MJ

Active Member
Apr 22, 2008
5,620
54
Manchester
OK, home made board made this afternoon, not had chance to do anything with it. Dimensions exactly to spec, took a while but actually quite enjoyed making it up! Cost - a cut-up Amazon box, a few sheets of A4, some 50mm wide black tape, half a roll of Sellotape, a bit of printer ink for the dots and 2 hours of my time. Please excuse Rosie and Paddy photobombing the pic!
Did you manage to get it to go through the calibration?
 

Craig.

The artist formally known as ViperSlider
Mar 26, 2024
356
320
Cardiff, S.Wales
Did you measure out the board locations? They need to be placed specifically for the calibration to work.

Where are you located?
 

LeylandVCDS

Active Member
Apr 20, 2015
587
354
Leyland, Lancashire
Did you measure out the board locations? They need to be placed specifically for the calibration to work.

Where are you located?
Measured as good as I could considering there are no specific measurements published for a highline camera on a Leon 3. Tried numerous times but always the same "can't recognise calibration panels 1 and 2". Based in Leyland, South Preston
 

LeylandVCDS

Active Member
Apr 20, 2015
587
354
Leyland, Lancashire
@Craig. .
I'm struggling to understand exactly what importance the board actually is, as the camera is exactly that, just a camera and surely only shows a video image out, and can't transmit info back to any board? Prove me wrong, please!
 

MJ

Active Member
Apr 22, 2008
5,620
54
Manchester
Sometimes when the camera hasn't been calibrated, the image can be a bit skewed, appearing slightly convex or slanted on the display.

I could never figure out the calibration on my Leon estate. The image was perfect, but just like you - I wanted that single remaining fault code to be cleared (to satisfy my obsessive, compulsive nature).
 

Craig.

The artist formally known as ViperSlider
Mar 26, 2024
356
320
Cardiff, S.Wales
@Craig. .
I'm struggling to understand exactly what importance the board actually is, as the camera is exactly that, just a camera and surely only shows a video image out, and can't transmit info back to any board? Prove me wrong, please!
The boards are used to mark the central point for the calibration data to be confirmed as correct for the car spec such as wheelbase, boot open threshold, height from ground to camera etc, that's why laser tools are used to confirm the boards are located correctly for that specific car type. Keep in mind, the boards and calibration sequence is designed to be done via ODIS, which will do a lot of the heavy lifting with the process so it's expected that doing it with 3rd party tools will be problematic. Especially so with a car that was never specified with a highline camera.

I'm sure the data can be injected but I can't find my notes on the process. There are some very specific prerequisites too:

Calibration requirements

t Camera lens must be clean.

t Vehicle needs to be positioned on a firm and level surface.

t There must be sufficient space all around the vehicle being calibrated.

t Parking brake is applied.

t Steering wheel in zero position, wheels point straight ahead.

t All doors and rear lid are closed.

t There is nobody in the vehicle.

t Vehicle is not loaded (curb weight).

t Before calibration: switch on ignition.

I bet having different coloured ground under the boards, such ass grass, would cause issues, as well as too much light on the board, bleeding the image for the camera.


For example, here is a random screengrab I just took of the Passat sequence:

1752059754246.png
 
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Craig.

The artist formally known as ViperSlider
Mar 26, 2024
356
320
Cardiff, S.Wales
OK, home made board made this afternoon, not had chance to do anything with it. Dimensions exactly to spec, took a while but actually quite enjoyed making it up! Cost - a cut-up Amazon box, a few sheets of A4, some 50mm wide black tape, half a roll of Sellotape, a bit of printer ink for the dots and 2 hours of my time. Please excuse Rosie and Paddy photobombing the pic!
In this pic, the board is not level and the uneven ground under the car plus the different coloured ground under the boards are all likely contributing to the issues you're having. Could do with a cover over the board to help dim down the light a bit too but that isn't a major one as long as it's not blazing sunshine
 

Daz3d

Active Member
Feb 13, 2024
7
15
Quote: Using the Ross-Tech instructions to calibrate it, I first got an error "0x0004 - Correction Vales out of range". So I shuffled around with the distance from the template to the rear axle, but started getting error "0x0003 - Marking not recognised". I tried all sorts of settings, but couldn't get the camera to recognise the template. I gave up, after having wasted a couple of hours.

Then I thought I would try putting the template on a large cardboard box (120mm high), to get it up off the ground. Still no luck. Finally, in desperation, I tilted the box up at the back by a further 120mm, and BINGO! the calibration routine ran fine, and now the module is free of the fault code.

 
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LeylandVCDS

Active Member
Apr 20, 2015
587
354
Leyland, Lancashire
I've searched and search on VAG forums, but have never come across this one. Once it stops raining, I'm off to try it - everything works but the fact I can't calibrate it and the error that VCDS screams on every scan is doing my head in! Will report back, thanks again

EDIT - nope, still doesn't want to know, same error, calibration procedure cancelled due to malfunction (cannot recognise calibration panels 1 and 2)
 
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Daz3d

Active Member
Feb 13, 2024
7
15

Attached is a huge calibration PDF you can print at home or have it made at a print shop for $10+ (then resell it). The previous German document ^ mentioned it shouldn't be shiny. Your circles look a bit grey if that matters. If stuck for ink and you have one, a 3D printer could make wafer thin discs like them easily.


I notice the original device is framed and it might be an inch or two off the ground. If trying to perfect the calibration in future I wonder if you can compensate for that in your VCDS measurements.

 

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  • Calibration target.pdf
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cairus

Active Member
Jun 4, 2024
1,584
553
Edit the dataset so that the calibration limits are larger. That would also be an option...…
 

LeylandVCDS

Active Member
Apr 20, 2015
587
354
Leyland, Lancashire
Edit the dataset so that the calibration limits are larger. That would also be an option...…
Can you please eloborate on editing the dataset? The error found is cannot recognise the calibration panels 1 and 2 - what does this mean? I cannot find any information on that anywhere

It has an Octavia 3 dataset.
Using OBDeleven, settings are:
Cam 0 transversal position front axle 3886mm - wheelbase 2636+1250 on next line
Cam 0 transversal position rear axle 1250mm - centre rear axle to camera
Cam 0 changing default data ground to camera Z 550mm
Cam 0 changing default ground to wheel arch Z 665mm
Cam 0 fixed value input ground to camera Z 550mm
Cam 0 fixed value input ground to wheel arch Z 665mm
Cam 0 marker size full size or half size = full size
Cam 0 X direction of marker red ribbon 1650mm - camera to red line
Cam 0 Y direction of marker 50 mm (offset of camera to centre) - not sure whether 50mm or -50mm needed, camera left of centre
Cam division counts horizontal -32768 - seems standard throughout VAG
Cam division counts vertical -32768 - seems standard throughout VAG
Cam 0 calibration binary threshold 0%

Any help you can offer greatly appreciated, thank you
 

LeylandVCDS

Active Member
Apr 20, 2015
587
354
Leyland, Lancashire

Attached is a huge calibration PDF you can print at home or have it made at a print shop for $10+ (then resell it). The previous German document ^ mentioned it shouldn't be shiny. Your circles look a bit grey if that matters. If stuck for ink and you have one, a 3D printer could make wafer thin discs like them easily.


I notice the original device is framed and it might be an inch or two off the ground. If trying to perfect the calibration in future I wonder if you can compensate for that in your VCDS measurements.

The security access of 22351 is not accepted by the camera, and this is something seen elsewhere in the forums too.
I haven't got the 0x0003 or 0x0004 errors, mines a failure to recognise calibration panels. OBDeleven starts the calibration then aborts because of this malfunction, as does VCP
The circles on my home made board are slightly greyer as they are printed, the outer squares are 50mm wide black duct tape, hence the slight difference in the density of colour.
I'm at a loss how to get this sorted now
 
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