This article [Opt. Eng. 54(5), 053105 (2015)] was mistakenly published on 8 May 2015 in the wrong section category “Imaging Components, Systems, and Processing,” when it should have been published as a Letter. It was republished as a Letter with a corrected CID on 12 May 2015. The updated citation is shown below:
Y. Zhang, R. Tao, and F. Zhang, “Key frame extraction based on spatiotemporal motion trajectory,” Opt. Eng. 54(5), 050502 (2015).
It appears correctly in print.