peaks and valley of image

1. Determine peaks and valleys of the image

2. Determine probabilistic frequency vs intensity of the image with intensity at Y axis and

Frequency at X axis

3. Regions with low intensity and high intensities in the image.

Answer 1

[Image Analyst]

What is the object? It looks like the surface of a rock. And it looks like intensity does not necessarily directly indicate depth or height. Anyway, take a look at imhist(), imregionalmin(), and imregionalmax(), and fft2(). You could also try thresholding and use morphological operations like imopen() and imclose() to identify larger regions of bright and dark areas.

You might also take a look at http://www.mathworks.com/matlabcentral/fileexchange/35452-finddepressions and my Image Segmentation tutorial at http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862

[vikas madineni]

Hello, It is the image of steel material when scanned using laser microscope. Can we find any relation between two phases of the material. When I used operation finddepressions() it is showing an error 'unable to use function'. In order to use such commands do we need to predefine those commands. Can you suggest me with any analysis approach to solve the issue. Waiting for response and thank you for your time.

Regards,

Bhargav Elchuri [e-mail] Ph.no - [phone]