Automatic door with small sections that open separately & only as far as needed

This is an idea I've had for years, but never posted because I thought it was not novel. I did a Google search for the title just now, though, and didn't find anything.

The idea is to make a door that works like automatic sliding doors on stores, but instead of one piece on each side, it's divided into several pieces, each one about an inch to several inches high. When you approach the door, these pieces open like a regular automatic sliding door, but instead of all of both sides opening all the way, only those pieces that are actually in your way open, and each one only opens as far as necessary to get out of your way. This is done using computer vision, as well as proximity sensors on the tips of the sliding pieces for fine guidance. Each piece is equipped with a separate motor (which can, obviously, be smaller than a motor that would move the whole door).

The effect is that the opening of the door is the same shape as your body (plus whatever you're carrying), and the rest of the space covered by the door remains closed while you pass through it.

The point of this is to reduce air exchange between the two areas separated by the door, whether this is to conserve heat, humidity, or clean air, or for whatever other reason you want.