img class

batch image classification



Welcome to

Start by logging on to with your assigned username. Images for tagging will be displayed immediately.

Here's an example of the type of image you might be tagging:

Look at the set of available choices. In this image, the objects that should be tagged are cars, trucks, buses, people, bicycles and motorcycles.

To tag a car, first click the "Car" radio-button. Then click the upper-left corner of the object, and drag a rectangle to the lower-right corner of the object. Release the mouse button and a rectange should appear.

Once the image has been tagged, the results should look something like this:

Here's a close-up example of a good Car tag:

The tags should not contain extra space:

The tags should not be smaller than the object:

If the image contains many vehicles in the background, just try to tag the majority of nearby vehicles like this:

If you make a mistake and want to delete a tag, you can use the Delete button:

Here are some examples of incorrect tagging.

Incorrect: Multiple tags per object

Incorrect: Tags not covering objects

Incorrect: Tags are single clicks, not rectangles

Incorrect: Bicycles should be tagged seperately. Bicycle tags should include rider.

Incorrect: Bicycles and motorcycles should be tagged individually.

Thanks, happy tagging!