COCO dataset for object recognition

See the following -

A Look at Open Source Image Recognition Technology

Image recognition technology promises great potential in areas from public safety to healthcare...At the Supercomputing Conference in Denver last year, I discovered an interesting project as I walked the expo floor. A PhD student from Louisiana State University, Shayan Shams, had set up a large monitor displaying a webcam image. Overlaid on the image were colored boxes with labels. As I looked closer, I realized the labels identified objects on a table. Of course, I had to play with it. As I moved each object on the table, its label followed. I moved some objects that were off-camera into the field of view, and the system identified them too.