how to store pixel location and color from impixelinfo

7 views (last 30 days)
How can I retrieve data stored in the impixelinfo function.
I have used impixelinfo to display location and RGB colors of an image as well as the temperature of a grayscale image whenever the mouse hovers over a specific point the image. My issue is that I want to store the specific temperature and color value to a variable wherever the mouse hovers to be used for further analysis
How can I retrieve the impixelinfo being displayed and store it in a variable

Accepted Answer

Image Analyst
Image Analyst on 24 May 2022
William to get the values of the image under the path you've drawn you need to draw the path and record it's coordinates as you draw it. Then you can extract the values at those coordinates. I'm attaching a demo where you can use drawfreehand to do that.

More Answers (1)

Walter Roberson
Walter Roberson on 24 May 2022
What you describe is more Data Cursor http://matlab.izmiran.ru/help/techdoc/creating_plots/data_ex7.html
impixelinfo is more for extracting pixel information over a line. Internally, impixelinfo() determines whether the change in x coordinates is greater than the change in y coordinates, takes the longer of the two, and uses that as the independent variable for interp2 purposes.
  1 Comment
William  Powell
William Powell on 24 May 2022
When I right click on the image the only option that I get is to copy pixel info

Sign in to comment.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by