UCF-QNRF

The UCF-QNRF dataset is a crowd counting dataset and it contains large diversity both in scenes, as well as in background types. It consists of 1535 images high-resolution images from Flickr, Web Search and Hajj footage. The number of people (i.e., the count) varies from 50 to 12,000 across images.

Source: Understanding the impact of mistakes on background regions in crowd counting Image Source: https://www.crcv.ucf.edu/data/ucf-qnrf/