Objects & physics check
Catch the floating bottle and the impossible shadow
A product hovering two centimetres above the table. A wine glass whose stem never reaches its base. A mirror reflecting a room that isn’t there. Physics errors are subtle enough to pass a two-second glance and obvious enough to embarrass you in the comments. Chekr checks that the scene could actually exist.
What physics errors look like
- Products floating above the surface they should rest on
- Shadows falling toward the light source, or missing entirely
- Reflections that don’t match the scene
- Objects intersecting each other or passing through hands
- Liquids, fabrics and cables that ignore gravity
How Chekr checks it
The objects-and-physics pass builds a quick understanding of the scene — light sources, supporting surfaces, object relationships — then checks each object against it: does it rest, cast, reflect and connect the way a real object would?
Violations are pinned with severity and confidence. Some carry automatic fixes; scene-level problems (like a wrong shadow direction) are flagged for a guided edit, where you mark the region and describe the change in a sentence.
Frequently asked
Why do AI images break physics?
Models compose scenes from learned appearance patterns, not a physical simulation. Contact points, shadows and reflections are exactly where appearance and physics disagree — so that’s where errors cluster.
Can Chekr fix physics errors automatically?
Local errors (a floating object, a missing contact shadow) are usually fixable with a regenerate-the-region fix or a guided edit. Global errors, like lighting that is wrong everywhere, are cheaper to regenerate at the source — Chekr tells you which case you’re in.