Procedural Wood Texture

Dave R

Jeff,

Although you can do perspective correction in Photoshop and other editors, it is best to get the camera set up as square to the surface as possible. Also set the focal length to something longer to get away from the distortion that occurs naturally with wide angle lenses. Get the lighting as even as possible. Use a lightmeter and gray card to check illumination. I have a hand held spotmeter for that. I work with unfinished boards because I then have the option to add the "finish" in an image editor. For the finish I create a new layer in the editor and paint it with a transparent color. That color can be adjusted until I'm happy with the appearance. Sometimes I'll make three or more different stains to try out. It's easy to readjust the color and opacity of the layer after saving the image.

I made this image a while back to show some variations in stain colors.
[url=https://flic.kr/p/d9FK2d]

I've thought it would be cool to make a scanner that would scan an entire board. Seems like a project for Matthias Wandel.

JQL

I think there are hand held scanners that could do the job. I don't know if they're limited to standard paper sizes.

Dave R

Yes. I was thinking about those handheld scanners. I was also thinking this would be another way I could justify a 48 x 96" CNC machine. Replace the router with a scanner head. You could scan up to a full sheet or plywood.

It wouldn't be limited to wood, either.

Three little problems. I'm not sure if normal scanner software would handle that much image area, not enough space in my shop for a machine that big (especially since I also want to build another boat in it) and there's the problem of not enough shekels in my pocket.

baz

@dave r said:

Yes. I was thinking about those handheld scanners. I was also thinking this would be another way I could justify a 48 x 96" CNC machine. Replace the router with a scanner head. You could scan up to a full sheet or plywood.

Kickstarter campaign maybe?

jtri

We are planning on getting a new plotter/scanner for large prints at work and it will scan in color. Do you think I will get fired if I try scanning sheets of veneer?