DLPU082C August 2021 – March 2024 DLPC7540
The Edge Blending Function (EBF) block supports spatially variable gain and offset for each color channel in linear light space. This section describes the APIs and commands that are provided for the customer to use this EBF block and implement a custom blend map application.
Manual blending can be used to achieve seamless overlap of two or more projectors, to increase the projected image area, and improve on-screen resolution and brightness. The EBF block compensates for color differences across different regions on the projected image due to light fall-off or surface material color, or to provide uniform color and brightness when overlapping two or more projectors.
Figure 14-1 shows that the gain value can be modified on the right edge of left projector and left edge of right projector to achieve a seamless final image.
Consider a monochromatic pixel pin, the EBF block can modify the intensity of this pixel by applying a gain and an offset:
pout = pin + GAIN + OFFSET