Object recognition is like a game of "I Spy" with your eyes and brain. Your eyes look at things, and your brain tries to figure out what they are. For example, if you see a dog, your brain uses information like size, color, and shape to identify it as a dog. This helps you know what the dog is and how to interact with it.
Just like how you learn to recognize different things by playing "I Spy" games, computers can learn to recognize objects too. They use special software to look at pictures and figure out what things are in them. But computers aren't as good at it as humans, because they need a lot of training and guidance to get better. Scientists are working hard to make computer object recognition more advanced, so they can help us do things like identify dangerous objects or even diagnose diseases based on images.