Lesson 6 of 7
Control the shape, then finish
6 min read
You've got the perfect pose in your head — an arm raised just so. But every time you describe it, the AI draws someone standing differently. How do you make the picture hold a shape you choose?
Show it the shape you want
Words are vague about structure. "A person reaching up" could be a hundred different poses, and the tool picks one at random. There's a way to be exact: hand it a control reference — a simple pose skeleton, an edge outline, or a depth map — and it keeps that shape while inventing everything else: the face, the clothes, the light. You set the structure; the tool fills in the surface. Change the pose below and watch the figure follow.
A control reference locks the structure — a pose, an outline, a layout — while the tool invents the surface detail. You draw the skeleton; it draws the body.
Make it big and sharp: upscaling
The picture you get is often smaller and softer than you want — fine on a phone, too fuzzy for a poster or a print. Upscaling fixes that: it enlarges the image and invents the fine detail that wasn't there — sharper edges, finer texture — so it holds up at large sizes. It's usually the last step, once the picture itself is right.
Upscaling is the finishing step: it grows a small, soft result into a large, sharp one by inventing extra detail.
Under the hood
You'll meet these controls under different names in different tools, but the ideas are the same everywhere — steer the structure, then sharpen the result.
The control-reference trick is often called ControlNet. Its reference can be a pose skeleton, an edge sketch, or a depth map — each pins down a different part of the structure. Upscalers go by names like Magnific or Topaz, or just an "HD" / "Upscale" button — all doing the same enlarge-and-sharpen job.
The gist
- —Words set the content; a control reference sets the structure — a pose, an outline, or a depth layout
- —The tool keeps your reference's shape and invents the surface — faces, colours, light
- —Upscaling is the finish: enlarge and sharpen once the picture is right
You've generated a character you love, and now you need them in one exact crouching pose for the next scene. What gets you there most reliably?
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