Description:
"Aliasing" is a visual artifact caused by the limited spatial sampling during image processing and/or poor compression or a bad conversion. Object or text/graphic edges appear “jagged” or pixelated. Can also refer to a moire (or “screen door”) pattern across certain parts of the image.
Impact:
Aliasing impacts the Technical and Content Quality of the asset. Member experience is negatively affected by low quality images or text/graphics. Typically aliasing is associated with poor compression or a bad conversion during file output. Aliasing can be further enhanced on any subsequent deliverables sourced from the asset.
Severity Structure:
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FYI |
Aliasing occurs in archival or stock video footage. |
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Issue |
Aliasing occurs in what should be high res footage and is not consistent with similar or surrounding shots. |
How to Prevent:
Render at the highest quality and resolution available whenever possible. Do not apply any unnecessary compression to source footage.
Solution:
Re-render at a higher sampling rate, if possible.
Apply anti-aliasing filtering. Be aware that this can blur the image, which may be less desirable than the original aliasing issue.