I've done this for my mother. It works with any photo, but it's better with a simpler one. Sometimes I delete or blur a busy background first. It takes some playing around, but it works.
Open a .jpg in Photoshop. Use the Pixelate, mosaic filter. Try 10-15. Now 'save for web' and in the save dialog window set as .gif and set your number of colours (try 64) Also, if you wish, delete some of the colours which are very close to one another, by clicking on them (or cltrl-click for many) in the colour table in the save dialog window and pulling them to the trash.
Save this and print. For the purchase of floss colours you can also do a screen shot of the resulting colour table and print it out.
You will need to play around a little to get the detail you need. Sometimes I do two images. One for most of the photo and another for finer detail of faces, etc. Sometimes I cut the result into two or four pieces and print them separately to make it easier to work. An experienced needleworker has no problem following the printout.
Let me know how it works out.
Diane
"Richard Pattle" wrote in message
Does anyone have any experience of using Photoshop to change an image into
a
cross-stitch/tapestry chart?
I'm thinking in terms of image resize, restrict number of colours etc, but I'm stuck on how to impose a grid on top of it all.
So if you've been there, done that, got the teeshirt I'd really welcome
some
guidance
Cheers