Trifocal tensor

Trifocal tensor is like a special magic tool that helps people see things better when they are looking at three different pictures at the same time. Imagine that you have three cameras and you take a picture of a toy car with each one. The trifocal tensor can help you figure out how the toy car moved from one picture to another. This is really helpful for things like computer vision or tracking objects in surveillance videos. It's like having a little helper that shows you how things are moving in three different pictures at once!