Ai338
3.3.11. Flicker : Cb
1) Set 5.5 lx illumination condition with blue filter, then measure the signal output.
2) Make blue chroma signal B – Y.
3) Measure odd field output value ( CB.ODD ).
4) Measure even field output value ( CB.EVE ).
5) Detect Flicker Cb with the following formula.
FlkCb [ % ] = ABS ( 2 x ( CB.ODD – CB.EVE ) / ( CB.ODD + CB.EVE ) ) x 100
3.3.12. Line crawl : R
1) Set 5.5 lx illumination condition with red filter, then measure the signal output.
2) Make composition of luminance signal Y.
3) Apply low pass filter to Y ( ex : rank filter ).
3) Calculate difference between Y signal lines for the same field.
4) Select maximum difference
△(
LCLEV ) value.
5) Detect Line crawl R with the following formula.
LcR [ % ] = ABS ( LCLEV / Y.mean ) x 100
3.3.13. Line crawl : B
1) Set 5.5 lx illumination condition with blue filter, then measure the signal output.
2) Make composition of luminance signal Y.
3) Apply low pass filter to Y ( ex : rank filter ).
4) Calculate difference between Y signal line for the same field.
5) Select maximum difference
△(
LCLEV ) value.
6) Detect Line crawl B with the following formula.
LcB [ % ] = ABS ( LCLEV / Y.mean ) x 100
3.3.14. Line crawl : G
1) Set 5.5 lx illumination condition with green filter, then measure the signal output.
2) Make composition of luminance signal Y.
3) Apply low pass filter to Y ( ex : rank filter ).
4) Calculate difference between Y signal lines for the same field.
5) Select maximum difference
△(
LCLEV ) value.
6) Detect Line crawl G with the following formula.
Lcg [ % ] = ABS ( LCLEV / Y.mean ) x 100
3.3.15. Line crawl : W
1) Set 1.0 lx illumination condition
2) Make composition of luminance signal Y.
3) Apply low pass filter to Y ( ex : rank filter ).
4) Calculate difference between Y signal line for the same field.
5) Select maximum difference
△(
LCLEV ) value.
6) Detect Line crawl W with the following formula.
LcW [ % ] = ABS ( LCLEV / Y.mean ) x 100
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