3D Cross Talk
Application: This is a 3D
pattern used to measure the
crosstalk (extinction ratio) for
frame packing, top and bottom
and side by side 3D format
structures.
Description: This image is divided in two sections with four rows of
16 white boxes each. The top section is for testing with the left eye
open. The bottom section is for testing with the right eye open.
The background area surrounding the boxes is a series of
grayscale ramps. The ramps begin at 100 IRE and transitions to
50 IRE at the left end of the fourth row of each series.
Method – Calculating percent crosstalk:
1. Close right eye to test the left eye using the top section.
2. Check the visibility of the boxes. Any deviation from
black indicates crosstalk.
3. Assess where the box and its background blend such
that they are not distinguishable.
4. Calculate the degree of crosstalk as a percent by
counting the number of boxes (from the beginning of the
series to the box identified in step 3) and divide that by
127. Example if the 20
th
box blends with its background,
the crosstalk would be 20/127 * 100 = 15.7%
5. Repeat with the left eye closed to test the right eye.
PGCWRGB Pattern
Application: This is a scrolling
pattern used to test for noise
on analog displays and motion
artifacts.
Geometry/Resolution
Patterns
Applications:
Grid – To check and adjust
convergence of red, green and
blue pictures.
Linearity – for testing deflection
linearity testing and alignment.
Overscan – To check and
adjust for the proper geometry
of display including picture
centering, size, pincushion and
linearity.
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