The subjective effects of random bit errors in YUV component video signals

This Report describes two sets of subjective test measurements of error visibility on pictures derived from digital YUV video signals sampled in compliance with CCIR Recommendation 601. The first set of tests measured the subjective picture impairment resulting from random, single-bit errors in either the luminance (Y) or chrominance (U/V) channels. The second set of tests measured the impairment in chroma-key performance produced by errors in the U or V components. The results show that one random single bit error per second in the most significant bit (MSB) of the Y channel is just perceptible, and 10 per second in the MSB of the U/V channel. In the chroma-key tests, errors in the MSB of both U and V were just perceptible at 3 per second, and in addition, errors in the lower bit significances of the U channel were more visible than the V channel.