How to Calculate Height of Android Phone from ground

I am working on a project in which i have to calculate my device height from ground. I have searched all over the internet but could not find any solution.

Please, Anyone tell me what to do..??

How can I calculate my mobile height?

Take a picture of the standard object which has to be positioned on the ground with standard zoom. Recognize the object size - or select it in the picture, and calculate the distance to the object. -> you have the distance to the ground. The object might be also your shoes etc.

How do you estimate the height of something?

Once you have positioned yourself, measure the distance from where you are standing to the base of the tall object you are measuring. Then add your height to this number, and voila! You have an estimated height!