Format distance tool label to centimeter.
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Can anyone tell me how to format the text in distance tool's label to centimeter?
Thanks
2 个评论
Sven
2011-11-12
The distance tool reports in pixels for a very good reason:
An image doesn't have *physical* distance by itself. Real-world distance is only applied after you answer this question:
"How big (in cm, for example) is each pixel in my image"?
This answer will be very different depending on the image. Take a picture of your house. How many cm in each pixel? Take a satellite picture of your neighbourhood. How many cm in each pixel?
What I suggest you do is determine the "scale" of your pixels, ie, that each pixel represents 0.1cm, then multiply that number by what the distance tool reports.
Jan
2011-11-13
If this is posted as an asnwer, I'd vote for it.
回答（1 个）
Ashish Uthama
2012-9-17
0 个投票
" The distance tool reports in pixels for a very good reason:
An image doesn't have physical distance by itself. Real-world distance is only applied after you answer this question:
"How big (in cm, for example) is each pixel in my image"?
This answer will be very different depending on the image. Take a picture of your house. How many cm in each pixel? Take a satellite picture of your neighbourhood. How many cm in each pixel?
What I suggest you do is determine the "scale" of your pixels, ie, that each pixel represents 0.1cm, then multiply that number by what the distance tool reports. "
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