If using multiple beam projectors the black level of the different devices must be tuned to have the uniform brightness over the wall area.ĭefine overlapping screen area of neighboring beam projectors IBM London UK, Training Room What are the most important factors of successful edge blending setup process? Black level compensation for the precise brightness of projected screens The setting and calibration procedure needs interactivity and significant capacity but can give perfect solution to get the uniform area with real time display of graphics and video overlay information.
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The final result of this setup is perfect video surface. This user interface uses splines, by moving these you can adjust a special and different grey scale transition and check visually how this is displayed on the video wall in real life. This is an interactive process and need dark environment for a perfect tuning.Īnd now comes the most important step where you can configure the grey scale transition of the soft edge blending areas manually, using an advanced user interface. This compensation means you have to set up the black level of the outputs and the overlapping areas of the projectors to the same level. Once this is completed, in the soft edge blending part you can define black level. This process is supported by custom test pictures during the setup process. In this environment, you can set any number of vertical and horizontal overlapping areas between the neighboring monitors.
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The next step is to define the overlapping areas of the neighboring monitors. During this process he can define gamma correction, to each of the outputs one by one and they can simply set up a gamma curve to the outputs. When using a video wall controller with soft edge blending service, firstly the operator must use the gamma correction service in order to set up the colour uniformity of the video wall area. IBM London UK, Training Room How edge blending works? The amount of information gives the feasibility of such AV project installations using multiple beam projectors. In control and supervision projects a large area is needed to display the sufficient amount of critical information and so this provides the opportunity for the operators to overview large and complex processes to easily supervise. The large picture can be broadcasted to the audience in such projects and so it can give the perfect visual experience when enjoying videos or movies in a large size. Generally such installations happen in the following application areas: Generally video wall controllers provide perfect solution to meet various project requirements in the following applications, where a large area must be mapped by beam projectors. Sophisticated black level adjustment and easy-to-use gamma correction facilitate the setup of the projectors. The soft edge blending capability guarantees display of a wide and tall image while no gap can be seen between the individual screens. When and where edge blending is mostly used? Why is it important? In order to provide a high-end visually mesmerizing experience to your audience, you will need to pick a leading-edge video processing solution that will be capable of combining multiple outputs for vertical as well as horizontal soft edge blending applications. The projectors are also color balanced to make them match as closely as possible. Like the name of this function suggests, the edges of the two projects are to be blended together and then are softened along a smooth curve towards the edge. Soft edge blending service of projector content can be proficient with either facilities built into projectors themselves or external video wall processors or controllers. So, practically one or multiple videos must be projected by multiple beam projectors to a large surface as if this picture would come from a single projector.
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They want to enjoy one big image of course, in razor sharp view and in real time without any disturbance. The video or graphics content of the image must be displayed over a coherent surface where the audience shall not see the borders of the individual projectors. This is generally applied when a rather wide image needs to be displayed over a large area. Soft edge blending in the pro-AV industry refers to 2 or more projectors being used to display a section of the same video image.