How to measure picture in Matlab GUI

i am doing an interface for measurement tool for my final year project, (FYP). I need to know how measure picture in Matlab GUI.

Answer 1

[Julien]

Hi,

What do you mean about measuring a picture ? If you only want to get the resolution, use P=imread('picturename.format')

You will store a matrix containing all the pixels. Then the size of your picture is the number of line and the number of columns.

[Siti Nor Arma Bt Mohd Zainun]

hye, thank you for answering my question, what i mean by these question is, how can i create a measurement tools in Matlab GUI which can measure the length of pixel or the defect in that picture. right now i am be doing an interface for weld imperfection for digital image then, i need to create image enhancement tools where is the defect of weld imperfection can be measure by measurement tools that i create in the Matlab GUI.

[Image Analyst]

Where did you upload your image to? You forgot to tell us. You can measure things manually with imdistline().

[Siti Nor Arma Bt Mohd Zainun]

The image is browse from other file. I'm using the push button to browse the image. I was try the 'imdistline' syntax and the result shows only in pixel value. the problem now is, i want to convert the pixel into other unit, such as 'cm' 'mm' in the picture. Please show or share with me the formula and the code that i can be inserted in GUI