Research Leads To Improved Human, Object Detection Technology

When searching for basketball videos online, a long list of Web sites appears, which may contain a picture or a word describing a basketball. But what if the computer could search inside videos for a basketball? Researchers at the University of Missouri are developing software that would enable computers to search inside videos, detect humans and specific objects, and perform other video analysis tasks.

“The goal of our research is to improve how computers interpret the content of a video and how to identify it,” said Tony Han, electrical and computer engineering professor in MU’s College of Engineering. “There are lots of possibilities with video-based detection, and it could come at quite a low-cost compared to object and human detection using other sensors, such as thermal sensors.”

Intelligent video surveillance requires human and object detection. If a security camera captures an image of an injured person lying on the ground, the computer would not only store the surveillance image, but also be able to detect that a human is falling and send signals for help. Human detection software could also be applied to assisted driving. For example, the software could make a car stop immediately when it detects a pedestrian.

Computer detection also might improve care for older adults living at home. If an older adult fell suddenly, computer detection software could detect the fall and alert medical professionals.

“My students and I are working on algorithms for automatic object detection, but these are very difficult to perfect,” Han said. “We’re trying to find a way to create reliable detection algorithms, but it takes a lot of time to test them. We have manually labeled more than 3,000 images with object locations and have used them to test our algorithms.”

This Fall, Han and his students attended the PASCAL grand challenge in object detection, where they competed in detection for objects in 20 categories against researchers from all over the world. In their first time competing, they won first place in detection for potted plants and chairs and second place in detection for humans, cars, horses and bikes.

Han’s research has been published in numerous publications, such as the IEEE Conference on Computer Vision and the Second IEEE Workshop on CVPR for Human Communicative Behavior Analysis.

Kelsey Jackson @ University of Missouri-Columbia

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