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QTR-Quadtone RIP

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Re: [QuadtoneRIP] If .quad files hold 256 values, how can they convey 16-bit data ?

2016-06-05 by Walker Blackwell

Exactly. The very large numbers in the .quad represent 16bit ink limits.

So it's 16bit (interpolation) x 16 (numbers) making the interpolation and working space a true 16bit space.

Best,
Walker

On Sunday, June 5, 2016, Roy Harrington roy@... [QuadtoneRIP] <QuadtoneRIP@yahoogroups.com> wrote:

There are 256 points but each is a 16-bit value. Interpolation is done for all the
intermediate values.
Consider that Photoshop curves have a maximum of 14 points!
And not only that they are only 8-bit values. Interpolation does wonders.

Roy


On Sat, Jun 4, 2016 at 11:31 PM, richard@... [QuadtoneRIP] <QuadtoneRIP@yahoogroups.com> wrote:
If I understand it correctly, when a 16 bit image tone is between two of the 256 steps it will interpolate the correct 16-bit quad value for the 16-bit image value.

Richard Boutwell

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Posted by: richard@richardboutwell.com
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