Photoshop - Cut image into equal parts
Posted 14 May 2004 - 01:34 PM
Posted 15 May 2004 - 10:47 AM
Make a new layer and using the line tool, draw a short, 1 pixel line anywhere in the image. (Use shift to keep the line straight and drag horizontally or vertically - depending on which direction to you want to split)
Duplicate the layer 3 times for a total of 4.
Take one of the lines and drag to the edge of the image. (it should snap to the edge)
In another layer, drag a line to the opposite side.
Link all 4 layers.
Now hit the Distribute layers button in the align layers pallet (again, horiz or vert, depending..), and the two lines in the middle will jump to the points where you have three perfectly equal sections.
You could crop to those lines by eye-balling, but it would be better to drag ruler guides so they cover the lines. That way, when you crop for each of the three images, the crop tool will snap to the guides.
Posted 16 May 2004 - 03:22 AM
Hope this helps.
Posted 16 May 2004 - 06:02 AM
No, that would certainly work but you've sparked another idea that would be even easier.
Select New Guides from the view menu but instead of using the ruler and division to figure out where the guides would go, just use percentage! Photoshop is smart enough to know what a "%" means in the New Guides dialog box.
In Fallen's case, place the first guide at 33.33 % and the second at 66.66 %. Boom - three perfectly equal sections!
Thanks for putting my brain into gear. /forums/ubbthreads/images/graemlins/wink.gif
Posted 17 May 2004 - 04:46 PM
Posted 17 May 2004 - 06:25 PM
I'll go you one better tho' ... instead of using the move tool and dragging the marquee'd section to a new document (which would mean you'd have to pay attention to the selection size and image resolution beforehand), just Command+C (Copy), after you make the selection.
Now, simply make a new document and Photoshop will automatically default to "Clipboard" - which will be sized EXACTLY to the dimensions and resolution of the copied selection - no thinking required!
Ain't Photoshop cool! /forums/ubbthreads/images/graemlins/grin.gif
Posted 18 May 2004 - 07:33 AM
Posted 19 May 2004 - 07:40 AM
The cropping by Canvas size is great for halves or fourths, since it's a very effective way to avoid missed or overlapped pixels, but I like the Copy selection/New Document method for sixths or uneven divisions.