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Quality Control (QC) Vocabulary
QC Vocabulary defines terms that are used in QC with the goals of 1) Ensuring that terms are used consistently, and 2) ensuring that terms are encoded consistently. The page for this topic is here.
This page shows terms for the "3D" category. 3D covers 3D image or encoding issues.
This category was introduced in Version 1.1
Version 1.1, December 17, 2019
| Term |
Description |
Definition |
V |
| CONVERGENCE-DISTANCE | Convergence distance incorrect | The convergence between eyes in 3D is too far apart, moving in an unusual fashion. Could be a function of targeted screen size. | 1.1 |
| CONVERGENCE-PLACEMENT | In 3D, the image is dimensionally in the wrong place. | The 3D effect is lost or reversed because an element of either the left or right eye separations is incorrectly combined. Includes subtitles that should be in the foreground but appear in the background. | 1.1 |
| FORMAT | Incorrect 3D format was provided | Incorrect format was provided, such sequential provided while side-by-side expected; or Anaglyph provided when video stereo pair expected. This does not addresss file format. | 1.1 |
| FRAME-VIOLATION | Issues with 3D at edge of frame | Where an object breaks frame but causes an uncomfortable viewing experience. This can be either because the object is too close to the camera when compared to the rest of the frame or that it appears in one camera but not the other. This can be a byrpoduct of one eye's view of the object rendering off the field of view. | 1.1 |
| GHOSTING | 3D Ghosting | A convergence error causing a doubled image or halo effect | 1.1 |
| NOT-3D | A stereo pair was not delivered, or autostereoscopic information is not correct. | Content is not 3D. For example, the second view was not provided, or two identical views were provided. This includes one eye temporarily dropping. | 1.1 |
| OTHER | Other 3D issue | Any other 3D issue not addressed by another term | 1.1 |
| SWAPPED-EYES | Swapped Eyes | The left and right eyes are swapped, causing 3D issues | 1.1 |
| TIMED-TEXT | Timed text is at wrong depth | Subtitles rendered such that their depth placement is incorrect. Or, subtitles have no depth creating a problematic visual experience. | 1.1 |
| WARPING | Warping | The image is unnaturally distorted with a warping effect | 1.1 |
| WINDOW | 3D Window out of range | An object in negative 3D space does not align correctly on the edge of the frame, causing an uncomfortable split edge. Also could be an issue with a floating window created to address a negative space 3D issue. | 1.1 |
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