**2. Image compression**

A recent study of compression for motion imagery focused on objective performance of target detection and target tracking tasks to quantify the information loss due to compression (Gibson *et al.* 2006). Gibson *et al.* (2006) leverage recent work aimed at quantification of the interpretability of motion imagery (Irvine *et al.* 2007b). Using techniques developed in these earlier studies, this paper presents a user evaluation of the interpretability of motion imagery compressed under three methods and various bitrates. The interpretability of the native, uncompressed imagery establishes the reference for comparison (He and Xiong 2006; Hewage *et al.* 2009; Yang *et al.* 2010; Yasakethu *et al.* 2009).
