The wide world of edge blending

You want to get an extra wide image across the wall - then you’ll probably need to combine two or more projected images to make a single seamless image. This is called edge blending.

The images are firstly overlapped and then visually joined together using an edge blending processor/software, such as the Optoma Chameleon GB-200.  Once these are blended, it is imperative the projectors do not move. If they do, your edge blend will come out of alignment.

So, before you start there are a number of factors to consider.

•    Partition walls, mezzanine floors and suspended ceilings are not ideal environments as they are subject to movement and vibration.
•    Large open spaces such as exhibition halls may get air movement, which may affect alignment.
•    Long mounting arms will amplify any movement so should be avoided.
•    Content resolution needs to match that of the projected resolution. Content with a resolution dissimilar to the combined native resolution of the blended projectors will make set-up more complex and cause the image to be stretched or distorted.
•    Have a minimum overlap percentage of 20% and avoid text on the overlapped areas.
•    Avoid people touching the projectors.  Can visitors reach the installation? Would cleaners or contractors on site knock the projectors?

Further help
Take a look at our handy guide.

Or to see a step-by-step video tutorial of edge blending using the Chameleon GB-200 visit the Optoma EMEA YouTube channel:
•   Manual blend of two or more projectors
•   Auto blend for two projectors

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