Although some studies have targeted crowded surveillance video sequences, they have been limited to tracking human objects or detecting the overall motion of a great number of people [15 17].
They often target crowded places such as markets, cafes and mosques, seeking to inflict huge numbers of casualties, and have recently stepped up their insurgency in strikes on Shi'ites, who they regard as non-believers.
But the militant group has a history of targeting crowds of civilians, as the BBC explains in 60 seconds.
In the latest outbreak of violence, which Afghan officials attributed to the Taliban, a suicide bomber on Wednesday targeted a crowd after a match of buzkashi, or Afghan polo, in northern Kunduz Province.
However, since it emerged publicly in 2014, Isis has continued to claim attacks outside Nangarhar – the only province where it has managed to gain ground – most notably when it targeted a crowd of protesters in Kabul in July, and a group of Shia mourners last month.
The remains of a dozen victims were burned beyond recognition in Saturday's attack when militants opened fire on residents, set fire to houses, and targeted a crowd with suicide bombers, security and medical officials said.
Fig. 3 Architecture of moving target crowd model.
The controller of moving target crowd model is composed of crowd model and mapping model.
The model can generate the target state matrix and the target crowd information for the relationship mapping.
