Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions from 20 to 29.
Can Computers Catch Criminals?
Have you ever seen a security camera staring at you in a shop? Well, it’s not just sitting there for decoration. Thanks to clever computer technology, some cameras can now spot bad behavior! These “smart cameras” use something called computer vision algorithms to analyze what’s happening in real time. Sounds like something from a spy movie, right? But don’t worry! They’re not watching you just for fun (unless you’re making silly faces at them).
[I] Here’s how it works. Smart cameras are programmed to notice unusual actions, like someone grabbing something off a shelf and running out the door. [II] The computer “learns” what normal behavior looks like – walking, shopping, chatting – and then flags anything strange. [III] So, if you’re doing cartwheels in a supermarket or dancing in the frozen food aisle, the camera might think, “Wait, what’s going on here?” [IV]
These smart cameras aren’t just for catching shoplifters. They’re also used in airports and train stations to keep people safe. For example, if someone leaves a bag unattended in a crowded area, the camera can detect it and alert security. Imagine someone suspiciously pacing back and forth near a gate at the airport. The smart camera might recognize this as unusual and send a message to human guards. It’s like giving cameras a sixth sense, though they still rely on humans to make the final call.
But, of course, these high-tech systems aren’t perfect. Sometimes they make mistakes. Imagine you’re in a store, juggling your phone, a bag of snacks, and a water bottle, and then you trip and drop everything. The camera might think you’re causing a scene or stealing. Oops! Or let’s say you’re at a bus stop doing yoga stretches (weird but possible), and the camera decides you’re acting “too strange.” Computers don’t understand everything – they’re smart, but they’re not genius-level yet.
So, what’s next for these super-smart cameras? Some scientists think they might one day predict crimes before they even happen – like in futuristic movies. Or maybe they’ll be used for more harmless tasks, like spotting lost pets in parks. Whatever happens, it’s clear that technology is getting smarter every day. Just remember: if you’re planning to do something goofy, you might end up confusing the camera. At least you’ll make the robot detective’s job a bit harder!