Correction to "DCT-Based Iris Recognition" [Apr 07 586-595]

In the above titled paper (ibid., vol. 29, no. 4, pp. 586-595, Apr 07), there was a transcription error in the definition of the DCT (Discrete cosine transform). The correct definition is provided here: http://csdl.computer.org/comp/trans/tp/2007/09/tp02.pdf