How do you photograph an LCD display? - Page 2 - Electronic Circuits Projects Diagrams Free

picbits · 6th January 2008, 09:09 PM

You could always bung it under a half decent scanner.

Pardon the dust on mine but it is nearly 10 years old.

crusty · 6th January 2008, 09:12 PM

or you could print screen, and print it out on a printer...

blueroomelectronics · 6th January 2008, 09:12 PM

Scanners a neat idea.

picbits · 6th January 2008, 09:21 PM

If you can get hold of an older Epson one they do 3D pretty well.

The newer Epson scanners are pretty dire. The attached images were done on an old Epson Stylusscan 2500.

pasanlaksiri · 7th January 2008, 05:25 AM

Quote:

Originally Posted by picbits

You could always bung it under a half decent scanner.

Pardon the dust on mine but it is nearly 10 years old.

What type of idea is that.

If some one dont hv a Cam this will be a nice idea.

Torben · 7th January 2008, 05:43 AM

Quote:

Originally Posted by pasanlaksiri

What type of idea is that.

If some one dont hv a Cam this will be a nice idea.

Actually, for something like an LCD screen which can lie right on the scanner bed, it's not that bad of an idea:

Pros:
o No barrel distortion.
o Consistent sizing.
o Guaranteed focus.
o Possibility of very high resolution images.

Cons:
o Exposure control depends on the software.
o Scanner lamp will probably blow the backlight away so you won't see it.
o You could scratch your scanner bed glass.
o You might need to be careful to keep room light *way* down while the image is being acquired.

Most scanners will of course work much better for flat objects and image quality will drop sharply for parts of the object farther from the scanner bed.

Anyway, it might work for some folks. I like the camera for most of the stuff I do, but the scanner idea isn't crazy. For instance, if you're writing a manual, it might be handy to have the consistency of the scanner over the flexibility of the camera.

Torben

pasanlaksiri · 7th January 2008, 06:41 AM

Quote:

Originally Posted by Torben

Actually, for something like an LCD screen which can lie right on the scanner bed, it's not that bad of an idea:

Pros:
o No barrel distortion.
o Consistent sizing.
o Guaranteed focus.
o Possibility of very high resolution images.

Cons:
o Exposure control depends on the software.
o Scanner lamp will probably blow the backlight away so you won't see it.
o You could scratch your scanner bed glass.
o You might need to be careful to keep room light *way* down while the image is being acquired.

Most scanners will of course work much better for flat objects and image quality will drop sharply for parts of the object farther from the scanner bed.

Anyway, it might work for some folks. I like the camera for most of the stuff I do, but the scanner idea isn't crazy. For instance, if you're writing a manual, it might be handy to have the consistency of the scanner over the flexibility of the camera.

Torben

Hmmmm. not bad

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6th January 2008, 09:12 PM	(permalink)
crusty	or you could print screen, and print it out on a printer...