Al Stewart
12-03-2010, 10:19 PM
I start with a color bit map image which includes a color gradient;
http://www.photocutouts.com/NON-website%20pics/0015.jpg
Converted to 8 bit gray scale looks like this;
http://www.photocutouts.com/NON-website%20pics/0014.jpg
Engraves like this; (showing top right corner of image)
http://www.photocutouts.com/NON-website%20pics/sample1.jpg
How do I avoid the stair-step gradient and how do I adjust it so there is more engraving in the lightest (marked with hash marks in photo) part of the gradient? It is almost not engraved at all. The black engraving is plenty deep enough already.
I see I also have to invert the gradient so the light color engraves deeper, but I think I will still have the stair-step problem, just on the other end. I ended up manually inverting the black and white in Photoshop because the white was not 100% white and the black wasn't 100% black. Forgot to invert the gradient.
Thanks!
Al
Photoshop CS4
CorelDraw X3
ULS Versalaser 40W
Vista
http://www.photocutouts.com/NON-website%20pics/0015.jpg
Converted to 8 bit gray scale looks like this;
http://www.photocutouts.com/NON-website%20pics/0014.jpg
Engraves like this; (showing top right corner of image)
http://www.photocutouts.com/NON-website%20pics/sample1.jpg
How do I avoid the stair-step gradient and how do I adjust it so there is more engraving in the lightest (marked with hash marks in photo) part of the gradient? It is almost not engraved at all. The black engraving is plenty deep enough already.
I see I also have to invert the gradient so the light color engraves deeper, but I think I will still have the stair-step problem, just on the other end. I ended up manually inverting the black and white in Photoshop because the white was not 100% white and the black wasn't 100% black. Forgot to invert the gradient.
Thanks!
Al
Photoshop CS4
CorelDraw X3
ULS Versalaser 40W
Vista