In Photoshop IMAGE > IMAGE SIZE will give you the total # of pixels for the entire image, I don't know how (if it's even possible) to get the # of pixels in a selected area.
In Photoshop IMAGE > IMAGE SIZE will give you the total # of pixels for the entire image, I don't know how (if it's even possible) to get the # of pixels in a selected area.
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it come up before :-
http://www.cartographersguild.com/showthread.php?t=2279
read to the bottom as the process gets easier and easier as we worked out better ways to do it. If you using Gimp then Rob wrote a script to do it - as he always does
I don't think its ridiculously odd, I think its keen and insightful and shows a brilliant mind and attention to detail - I asked the same question last June...
The cheap and cheerful way is to download a copy of paint.net. This is actually a very flexible free graphic editor, but for this you want its selection tool. Open your image in the program select the area and look at the lower left corner of the screen --- # of square pixels.
You can select for contiguous areas or draw with a lasso type tool.
http://www.getpaint.net/
Other solutions exist but mostly cost money. The downside, I think, is that pixels are wider than they are tall some other methods report different area.
Autocad has an area calculator that seems to consistently report bigger numbers.
Creative Cartographer (another cad based app) also has an area calculator.
Gimp and Photoshop both give you information in their Histogram window that can help you calculate # of pixels - best refer to link....
http://www.cartographersguild.com/sh...?t=2279&page=2
Finally for a nuts and bolts example here is a thread on the Harn site Lythia.com that has people solving the problem with Autocad.
http://www.lythia.com/forum/viewtopic.php?f=9&t=10067
Last edited by Sigurd; 02-07-2009 at 12:13 PM.
Sorry RR - I can't take the credit for that oneOriginally Posted by Redrobes
it come up before :-
http://www.cartographersguild.com/showthread.php?t=2279
read to the bottom as the process gets easier and easier as we worked out better ways to do it. If you using Gimp then Rob wrote a script to do it - as he always does
Isomage cobbled together the gimp script that can calculate the area and perimeter of a selection:
http://www.cartographersguild.com/showthread.php?t=3681
-Rob A>
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Oh yes sorry Isomage
Rob, your reputation as 'the scriptmeister' was preceding you there. We have about 3 or 4 Gimp scripters now then - which is very cool.
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