Field Notes

Dead Eyes

The first place a generated portrait falls apart is the eyes. Here is what fixing them actually takes.

The first thing I look at on a portrait is the eyes. It's also the first thing a generated one gets wrong. Everything else can land. Skin, hair, the fall of the light, the weave of the sweater. Then you reach the eyes and nobody's home. Sharp, lit, vacant. You feel it in a tenth of a second, before you can name it.

So I held everything still and changed one thing. Same woman, same light, same flat expression, same frame. Only the eyes move.

A generated portrait with dry, vacant eyes. The look passes through you.
Dead
The same portrait with living eyes. She is in the room. Nothing else moved.
Alive

Left, she's gone. The eyes are dry and the look passes through you. Right, she's in the room. Nothing else moved. Not the mouth, not the head, not a hair.

Here's what a living eye is. It's wet, and the wet catches the room. One bright point where the light sits, and it lands in the same spot in both eyes or the whole face tips into wrong. The white is never white. The lower lid carries the warmth before the mouth has done a thing. Miss it and you've got a mannequin. Hold all of it and a stranger trusts the face before reading a word beside it.

That's the work, and it's a different thing from making something pretty. Pretty is easy now, the machine does pretty all day. Believable is the hard part, and believable is the whole job. I learned it in rooms where the picture always ended up on a real screen at real size, and the standard there never softened when the tools showed up. If anything it asked for more, because this is the part the tools still can't reach on their own.

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