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HQV Benchmark 2.0 Analysis – ATi, nVidia and Intel

Last updated on June 21st, 2010 at 08:39 am

Overview:
This chapter focuses on various cadences which can occur in video content from a plethora of sources. Severe moire is used as an indication that cadence lock has not been achieved. It is the amount of time it t akes to achieve a cadence lock, indicated by a reduction in the moire distortion, which is the scoring mechanism for this specific test.

Notes:
Both of these tests check for colour artifacts which would be introduced by upsampling of previously downsampled video. When video is compressed the colour data is condensed and this truncated colour information can result in artifacts if the image is not correctly upscaled from the remaining information.

Scoring:
To score this correctly we have to analyse the patches which should have no colour lines in the dark areas around the colour bars. The colour bars should be smooth.

The image above shows heavy artifacting in the black areas between the bars which has been highlighted to make it easier for you to notice. This would result in a lower score. We need to carefully analyse chroma bleed.

Chroma Upsampling Error (CUE) (Score either 5, 2 or 0)
No Visible colour lines can be observed in the dark region around the colour bars of patch. The colour bars should be smooth. – Scores 5
Very faint colour lines can be observed in the dark region around the colour bars of patch. The colour bars have some mild ‘stair’ stepping. – Scores 2
Highly observable colour lines in the dark region around the colour bars of patch and within the colour bars. – Scores 0

Intel GMA X4500 (G41)
Intel HD Graphics
ATI HD4200 (IGP)
ATI HD5450 (Discrete)
ATI HD5550 (Discrete)
ATI HD5770 (Discrete)
ATI HD5850 (Discrete)
ATI HD5870 (Discrete)
NV G210 (Discrete)
NV G220 (Discrete)
NV GTX 465 (Discrete)
NV GTX 480 (Discrete)
Chroma Upsampling Error (CUE)
2
5
5
5
5
5
5
5
0 5
5
5

The ATi cards all score 5 in this test and again the higher end GTX boards from nVidia match the results, we were pleased the report that the G220 gave a good showing in this test also.. The Intel solutions give improved results in this test with the HD solution holding its own at the top of the pile.. The G210 again fails this test miserably.

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