Texas Instruments DW30 Canceling Brightness Uniformity, What is a Blend?, How Are Blends Used?

Section 3: Operation

Step 4: Readjust Color Temperature (level of red/green/blue) in 8 Zones

4a) Return to Steps 2a & 2b and, if necessary, fine tune the zones so that they all still exhibit a single color temperature.

Canceling Brightness Uniformity

If you do not want to use or apply Brightness Uniformity settings, delete the checkmark from the “Uniformity Enable” checkbox at the top of the Brightness Uniformity menu.

Edge Blending f Christie Edge Blending is an innovative set of software functions that can quickly and easily blend the edges of multiple adjacent full screen images to create a single seamless larger image.

What is a Blend?

In simple terms, a blend appears as a gradient strip along an edge of a projected image. It is darkest along the extreme edge of the image, and lightens nearer to the rest of the image (see right). This area runs along the edge of the projector’s internal DMDs (display area); it cannot be located on interior pixels.

How Are Blends Used?

In multiple-projector walls, complementary blends between neighboring images can compensate for the extra “brightness” or intensity where these edges overlap. By

controlling blend width and other properties, you can achieve uniformity across the group of images. Visible overlaps will disappear as illustrated in Figure 3.31.

Figure 3.30

Figure 3.31. Edge Blending Concept

(NOTE: TILING DONE AT SOURCE)

For best results, use the same projector model and type throughout your display wall. In addition, avoid high-gain screens whenever possible—the optical performance of such screens demands minimal image offset, thus projectors must be located very close to one another. Note too that the requisite tiling of the image—with data repeated along internal edges that will overlap—must be correctly done by your source.

Standard edge blending software controls are located in the 2-page Edge Blending submenu access via Configuration menu, then Geometry and Color submenu, then Edge Blending. The More option opens the second page of the Edge Blending submenu.

3-62 Christie DS+60/DW30/Matrix 3000 User’s Manual 013-100149-02 Rev. 1 (01/07)