Scaling & Enhancements

3.1 Scaling & Filtering

Luminance Frequency Bands appear as alternating black and white stripes. The higher the frequency, the thinner the stripes. For this test, the top half of the screen displays a set of eight boxes of vertical luminance bands. The frequency of the bands steadily increases from the lowest frequency box in the top left to the highest frequency box in second row, right side. The bottom half of the screen displays the set of complimentary horizontal luminance bands. The Chrominance Frequency Test also consists of sets of horizontal and vertical frequency bands. Since this is a chrominance test, the lines are orange and blue instead of black and white.


In the third test the edges of the characters are examined and it is observed whether they show any striping, stair stepping or ringing artifacts introduced by the video processor.

3.1 Resolution Enhancement

As mentioned in prior tests, upscaled video has two inherent flaws – the presence of upscaled color and compression artifacts and a susceptibility towards the video appearing soft, i.e. a lack of detail. This set of tests focuses on the latter problem - assessing the video processor's detail enhancement technologies. Essentially a sharpening algorithm should be applied that increases the crispness of details, without oversharpening the edge introducing bright borders.