the relation between the distance and the number of pixels in the image

Question

Mary on 11 Dec 2012

0
Link

Direct link to this question

https://nl.mathworks.com/matlabcentral/answers/56262-the-relation-between-the-distance-and-the-number-of-pixels-in-the-image

Hi guys I am trying to find the relationship between the number of pixels and the distance . I have taken some images for a pole at different distances, and I am trying to count the number of pixels for the width of this object in each image. could you please help me to do this in MATLAB. I am working with color images.

0 Comments
Show -2 older commentsHide -2 older comments

Sign in to comment.

Sign in to answer this question.

Answer 1

Walter Roberson on 11 Dec 2012

0
Link

Direct link to this answer

https://nl.mathworks.com/matlabcentral/answers/56262-the-relation-between-the-distance-and-the-number-of-pixels-in-the-image#answer_68130

When the pole is N times further away, it will appear to be 1/N times as long, provided that the lens is linear (e.g., is not something like a fish-eye lens that distorts distance non-linearly with distance from the optical axes.)