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Curiousjeff
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Message 11 of 20
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Waves in scanns

Are you able the make very fine adjustments of the frequency?

Through the graphic card for the projector? For example 61hz?

Of the camera fps rate?

I am not talking about regular f-stop or shutter speed, but very fine adjustments.

In David live view, when setting up calibration, zoom in (mouse wheel). Is there any flickering, lines going across the screen, etc... or do you have a rock solid image? You must have the most stable image in live view before you start scanning.


Jeff
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drndadoo
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Message 12 of 20
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Waves in scanns

Hey Carl,

 

I found your thread. Are you available for a TeamViewer session next week?

Send me a private message.

I am an HP Employee

Original David Team Member
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behold3d
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Message 13 of 20
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Waves in scanns

What do you mean by frequency?
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drndadoo
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Message 14 of 20
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Waves in scanns

What he means is monitor refresh rate. Some gfx cards have fine adjustment for this option. You can set refresh rate to 59 Hz, 60 Hz or sometimes even in between.

I am an HP Employee

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drndadoo
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Message 15 of 20
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Waves in scanns

I made some scans recently with SLS-3 and software version 5.2 Oriignal HP cams, rolling shutter and there are no lines in scan.

 

Capture1.PNG

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behold3d
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Message 16 of 20
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Waves in scanns

@drdadoo suggested a teamview  I can make myself available if we decide on a date. Thank you

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drndadoo
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Message 17 of 20
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Waves in scanns

Check your message inbox.

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behold3d
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Message 18 of 20
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Waves in scanns

I did ty
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Violinguy246
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Message 19 of 20
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Waves in scanns

Hi

 

Were you able to get rid of the lines in your scans?

I am having the same problem. I have tried all sorts of changes in the program all with the same lines

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sammar1
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Message 20 of 20
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Waves in scanns

I was able to drastically reduce and almost remove the waves by changing the resolution of the camera. I was afraid that it would cause a loss of detail but that didnt prove to be the case.

Since the waves look more like a moire pattern, I think it has to do with the relationship between the projector's resolution and that of the camera. The solution could be making the camera higher, depending on your projector's resolution

 

sam

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