There is an urgent industry need for documentation of video quality metrics (VQM). To meet that need T1A1 has developed a series of Technical Reports specifying accuracy and cross-calibration of video quality metrics (T1.TR.72-2001), normalization algorithms useful in implementing FR methods (T1.TR.73-2001), and VQM algorithms that are suitable for application in design, manufacturing, installation and servicing of video transmission systems incorporating compression techniques. PSNR is defined in T1.TR.74-2001. This Technical Report specifies a JND-based VQM utilizing the full reference technique.