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. 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. Once the overlap regions have been created, the next step is edge blending.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. However, if you have any further questions, please contact us.
#Edge blending black space how to#
Note: It is worth noting that some applications won’t support overlaps as a standard function.ĭue to the number of different software applications available, it is beyond the scope of this section to describe how to perform this function for each possible method. Figure 3: Original software image.įigure 4: Software setup to produce overlapped regions. Figure 3 shows the original image and Figure 4 shows the overlap regions created to correspond to the same regions as described in Figure 1. Modify the software application to have the same calculated overlap regionīelow we show an image before and after overlap regions are implemented. Once the projectors are aligned, overlapped and ready to go, the software then has to be adjusted to provide the same overlapping regions. Here for illustrative purposes, we show an example of projector placement on a curved screen with the overlapping regions described above. The exact layout of the projectors will change depending upon screen size, screen shape and the optics of specific projectors used. Once the overlapping regions have been calculated, we can then align the projectors and software.Īlign the projectors to produce the calculated overlap Figure 2: Projector layout with overlapping regions. As we have two overlapping regions between our three projectors (as shown in Figure 1), our overall displayed resolution will be:
Taking our 12.5% overlap region, this equates to 160 pixels with our SXGA projectors (1280 x 0.125 = 160 pixels). In the example described, the total available resolution of the three projectors titled horizontally before overlapping is: In this example we use a 12.5% region because existing resolutions result in whole pixels: However, because of different projector resolutions, it is good to standardize on the same overlapping region. Note: It is good to have a complete number of pixels and the same physical screen size when edge blending.
Figure 1: Example overlapping regions of 3 SXGA displays. Each projector has a resolution of 1280×1024 (SXGA).
0 kommentar(er)
