HP 3D scan and vertiacal lines on model

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Shefajs
Posts: 13
Joined: 07 May 2019, 13:27

HP 3D scan and vertiacal lines on model

Post by Shefajs » 12 Mar 2020, 11:01

Hi,

Today it's first time that I had to scan a large objects. Made my 240mm and 300mm panels and calibration is a piece of cake comparing to the small sizes I usually need to fight with.

But I do have a lines on the object - vertical lines that bends in the upper image portion to the corners,

I have tried to change a lot to get rid of them with no luck, they always stay the same. I'm scanning with 1080p Lg PF1500 and Nikon D5300. I have tried changing synchro scan, aperature, ISO, focus, etc.

Did any of You got similar artifacts?

How did You get rid of them?

Thank You.
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kilrabit
Posts: 3
Joined: 18 Nov 2016, 12:44

Re: HP 3D scan and vertiacal lines on model

Post by kilrabit » 12 Mar 2020, 11:29

Try decreasing your brightness, looks like reflection.

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OBNRacerMan
Posts: 146
Joined: 12 Aug 2019, 09:46
Location: Obninsk, Russia

Re: HP 3D scan and vertiacal lines on model

Post by OBNRacerMan » 12 Mar 2020, 12:25

Just recently, in the Telegram group, a person had a similar problem - it turned out that, in his case, the external lighting of the room had a similar effect - with fluorescent lights.
I prefer to scan in the dark or in very low ambient light, which can in no way affect the quality of the scan.

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Micr0
Posts: 413
Joined: 15 Nov 2016, 15:20

Re: HP 3D scan and vertiacal lines on model

Post by Micr0 » 12 Mar 2020, 13:03

Shefajs wrote:
12 Mar 2020, 11:01
Hi,

Today it's first time that I had to scan a large objects. Made my 240mm and 300mm panels and calibration is a piece of cake comparing to the small sizes I usually need to fight with.

But I do have a lines on the object - vertical lines that bends in the upper image portion to the corners,

I have tried to change a lot to get rid of them with no luck, they always stay the same. I'm scanning with 1080p Lg PF1500 and Nikon D5300. I have tried changing synchro scan, aperature, ISO, focus, etc.

Did any of You got similar artifacts?

How did You get rid of them?

Thank You.
I am going to assume that you have been scaning with your setup previously with out these problems. The only difference now is that you are scanning a larger object. Is this correct?
If so, my first thought is that OBNRacerman is correct, and that it's environmental (Florescent lights are the work of the Devil :).
If not, have you changed the setting under "Structuredlight -> Acquisition -> SyncMode?
µ

bigbomber
Posts: 85
Joined: 14 Dec 2017, 18:08

Re: HP 3D scan and vertiacal lines on model

Post by bigbomber » 14 Mar 2020, 13:10

OBNRacerMan wrote:
12 Mar 2020, 12:25
Just recently, in the Telegram group, a person had a similar problem - it turned out that, in his case, the external lighting of the room had a similar effect - with fluorescent lights.
I prefer to scan in the dark or in very low ambient light, which can in no way affect the quality of the scan.
Hi
can you give me the link of Telegram group?
I never know about HP 3d Scan group.
Which other socienties are there about HP 3d Scan or other 3d scan systems. if you have any links please send us to.

bigbomber
Posts: 85
Joined: 14 Dec 2017, 18:08

Re: HP 3D scan and vertiacal lines on model

Post by bigbomber » 14 Mar 2020, 13:15

Shefajs wrote:
12 Mar 2020, 11:01
Hi,

Today it's first time that I had to scan a large objects. Made my 240mm and 300mm panels and calibration is a piece of cake comparing to the small sizes I usually need to fight with.

But I do have a lines on the object - vertical lines that bends in the upper image portion to the corners,

I have tried to change a lot to get rid of them with no luck, they always stay the same. I'm scanning with 1080p Lg PF1500 and Nikon D5300. I have tried changing synchro scan, aperature, ISO, focus, etc.

Did any of You got similar artifacts?

How did You get rid of them?

Thank You.
at first increase the angle between projector and camera. it must be larger then 15 deg (in single an dual mode).
for second, reduce projector light
for third, try other frame rate of camera.

you know that the frame rate of camera and projector must be synchronized.

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OBNRacerMan
Posts: 146
Joined: 12 Aug 2019, 09:46
Location: Obninsk, Russia

Re: HP 3D scan and vertiacal lines on model

Post by OBNRacerMan » 14 Mar 2020, 16:18

bigbomber wrote:
14 Mar 2020, 13:10
Hi
can you give me the link of Telegram group?
I never know about HP 3d Scan group.
Which other socienties are there about HP 3d Scan or other 3d scan systems. if you have any links please send us to.
3D Scanner - This is a Russian-speaking group, mainly those who create their own homemade 3D scanners.
There, among other things, various 3D scanning programs are discussed. Although I know that there are also users from other states - Lithuania, Belarus and others.

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