How do I treat an image as an object?

This is my first time to use it.
I'm a beginner at unity.I wanted to display the image in Scene view.
<How>Drag and drop images into the project view→In the inspector view, the texture type was sprite and applied.
However, when I tried to use Ray to determine if there was an object, the image did not respond.The 3D object provided by unity default responded.
Does the <method> method treat images as objects?
I haven't studied unity at all, so I don't know anything about it. I think it's a wrong question, but I appreciate your cooperation.