Systems and methods for determining image characteristics are provided. In particular, a first image with unknown characteristics can be obtained. The first image may be provided to a plurality of user devices in a verification task. The verification task may include one or more commands to be presented to the user of each user device. The instructions are determined based at least in part on the first image. A user response can be received, and an unknown characteristic of the first image can be determined based at least in part on the received response. After determining the unknown characteristics of the first image, one or more machine learning models may be trained based at least in part on the determined characteristics.
展开▼
