Re: Is there a way to measure depth?

Posted by Nathaniel Ryckman on Apr 14, 2011; 6:34pm
URL: http://imagej.273.s1.nabble.com/Is-there-a-way-to-measure-depth-tp3684978p3684979.html

Probably not. Depth perception is a complicated perception created from many measurable quantities and logical inferences.

I see a plugin called IsoPhotContour2, but, since the description isn't very thorough, I'm not sure if it does what you want or not:

http://www.dentistry.bham.ac.uk/landinig/software/software.html

Here is a paper on automated depth perception. Maybe you can pick up some ideas/key words to Google there:

http://robotics.stanford.edu/~ang/papers/aaai08-Make3dDepthPerceptionSingleImage.pdf

I was trying to help someone else with a similar topic. The colors of the object that they were trying to select was too close to the colors of the light shining on it. I had an idea, but I haven't gotten to test it out very much, and it didn't seem to work very well.

How big are the gaps that you are talking about? Close, dilate and fill might be able to help you if the gaps are extremely small.

jkaufman wrote

Hi everyone,

I know that it is very helpful to have an example image to understand what I am asking, however I cannot send out pictures of my materials.  I am working on the same problem as in my previous post, trying to find the area percentage of adhesive left on an aluminum panel.  I start running into thresholding problems when my adhesive is either clear or just a similar color to the aluminum.  
So I am asking if it is possible to measure depth, or just find the area of the part that is furthest away (for me it is the aluminum that is below the adhesive).  The examples I can show you, are sample images from Image J. Take the image boats for example, is there a way to tell which boat is in front, and outline the area of the remaining boats?

Thank you for any help that you can give me even though I am unable to provide you with an actual sample picture.