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number of pixels

Posted on 2002-07-02
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Last Modified: 2012-05-04
Hi

How I can check number of pixels in selected
aria of an image?

Grigor1
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Question by:grigor1
9 Comments
 
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Expert Comment

by:weed
ID: 7125640
Make your selection, look at the dimensions of your selection in the info palette, multiply the width by the height...Thats it.
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Expert Comment

by:zombeen
ID: 7126067
weed i dont think its going to be that straight-forward . this will only work if the selected area is a rectanle/square (lxb = area) . it surely wont work for random / circular shaped selections
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Expert Comment

by:weed
ID: 7127175
Nope, it wont. And good luck..heh. I dont think it can be done. Photoshop certainly doesnt do it.
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Expert Comment

by:khourykris
ID: 7127960
Photoshop does not count the pixels. I also needed to know how many pixels were in a given area and the only way to figure it out fast was using this formula.

(w x h) x 0.78601618162057722497282936843376 = number of pixels. (give or take a pixel or two)

KK
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Expert Comment

by:weed
ID: 7127965
Time to read the guidelines on posting comments and answers khourykris. Especially when giving an answer that doesnt make sense.
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Expert Comment

by:ComTech
ID: 7128119
Answer rejected.

Please read: http://www.experts-exchange.com/jsp/infoMemberAgreement.jsp 

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ComTech
Community Support Administrator  
Experts-Exchange  
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Author Comment

by:grigor1
ID: 7130294
Found the answer, I think:

Fill selected aria with black,
everything else - white, then
Image > Histogram and when cursor in
the Histogram window,
Percentile show percent of the selected aria.

Grig.
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Expert Comment

by:Lobo042399
ID: 11453693
No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I will leave the following recommendation for this question in the Cleanup topic area:

PAQ - Refund Points

Any objections should be posted here in the next 4 days. After that time, the question will be closed.

Lobo
EE Cleanup Volunteer
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Accepted Solution

by:
modulo earned 0 total points
ID: 11480864
PAQed, with points refunded (100)

modulo
Community Support Moderator
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