Christie Digital Systems DHD800 user manual Appendix, Color matching

Appendix

5Set ‘Test pattern’ to ‘On’ to display a 50 % white image. The overlap area will be brighter than the non-overlapping area. Adjust the Black level in the Edge blending dialog box to increase the brightness of the non-overlapping area so that the unevenness is reduced.

Note:

•The overlapping area might become uneven depending on the images. In such a case, it is recommended to decrease the contrast of the images in the Image Adjust Menu or set the BrilliantColor function to ‘Off’.

If the colors of the left and right images do not match, then follow the next step.

Color matching

6Select ‘Color matching’ in the setting menu and display the Color matching dialog box. Then, set ‘Color matching’ to ‘On’ and adjust the color settings (Red/Green/Blue/White). (Refer to page 52 for operation procedure.)

7Select ‘Advanced color matching’ if you need further adjustment.

In the Advanced color matching dialog box, set ‘Advanced color matching’ to ‘On’ and adjust the values of Target (Red/ Green/ Blue/ Cyan/ Magenta/ Yellow/ White).

Note:

•When you change the values of Target, make sure that each Target value should be within the range of Measured value. (e.g., In the case of the Fig.1, the X value of Target-Red should be within 0.623 which is the X value of Measured- Red.)

8If the colors of the left and right images do not match, even if the Target values are adjusted, use a colorimeter which is capable of measuring the chromaticity coordinates and luminance. Follow the steps below.

1.Set ‘Auto test pattern’ to ‘On’ in the Advanced color matching dialog box.

2.Put the cursor in the Mesured-White and press the SELECT button to display a white pattern.

3.Measure the chromaticity coordinates (x,y) and luminance (lx) by using the colorimeter.

4.Enter the obtained (x,y) values in the Mesured-White. (The (L) value of Mesured-White should be left at 1.000.)

5.Put the cursor in the Mesured-Red and press the SELECT button to display a red pattern.

6.Measure the chromaticity coordinates (x,y) and luminance (Lx) by using the colorimeter.

7.Enter the obtained (x,y) values in the Mesured-Red. Then, calculate the (L) value of Mesured-Red by applying the following formula and enter the value.

(L) value of Mesured-Red = [Lx of Red] ÷ [Lx of White]

8.Enter the values of Mesured-Green, Mesured-Blue, and Mesured-Half white in the same way as Mesured-Red.

9.Adjust the values of Target again.

10.Select ‘Store’ to complete. (Apply the same adjustment to the other projector if necessary.)

Set to ‘On’.

Fig.1 For rich color reproduction color wheel

DHD800 User Manual	91
020-000244-01 Rev.1 (08-2010)