Versions Compared

Old Version 11

changes.mady.by.user BrightSign TechDocs

Saved on

compared with

New Version 12

changes.mady.by.user BrightSign TechDocs

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

Overview 

A bezel is the physical frame around the display area of a panel, which usually contains a border of black (inactive) pixels that separate that display area from the display area on adjacent panels. If there is no compensation for the bezel, it can cause alignment issues. Bezel compensation, which discards the display content under the central bezels, should be applied to video walls to ensure that displayed images move smoothly across adjacent panels.

Calculating Bezel Size

To The formula to calculate the size of a screen bezel in pixels from millimeters , you must multiply the screen is:

(Screen width/height in pixels

by the bezel

) X (Bezel size in millimeters

, then divide by the screen width

) / (Screen width/height in millimeters) = Bezel size in pixels

See the example below for more information.


Panel
borderColor#3D3D3D
bgColor#F4F4F4
titleColor#3D3D3D
borderWidth0
titleBGColor#3D3D3D
borderStylesolid

ON THIS PAGE

Table of Contents
indent20px



Example


This example uses a four panel display wall (see Image 1) where the panel dimensions are 1100mm (1920 pixels) by 620mm (1080 pixels), the horizontal bezel is 17mm, and the vertical bezel is 20mm.

To get the number of pixels in the horizontal bezel area, multiply the panel size screen width in pixels by the bezel in millimeters, then divide by the panel size screen width in millimeters: 

(1920p x 17mm) / 1100mm = 30 pixels

To get the number of pixels in the vertical bezel area, multiply the panel size screen height in pixels by the bezel in millimeters, then divide by the panel size screen height in millimeters:

(1080p x 20mm) / 620mm = 35 pixels.

To get the total bezel-adjusted resolution, add the width to the height:

(1920p + 30p + 1920p) + (1080p + 35p + 1080p) = (3870 x 2195 pixels)

Image 1: Add the bezel area to the wall width and height get the total bezel-adjusted resolution.


Configuring a Video Wall with Bezel Compensation

To configure a 1x2 video wall with bezel compensation:

Code Block
languagejs
vm = CreateObject("roVideoMode")
sm = vm.GetScreenModes()

sm[0].video_mode = "1920x1080x60p"
sm[0].transform = "normal"
sm[0].display_x = 0
sm[0].display_y = 0
sm[0].enabled = true

sm[1].video_mode = "1920x1080x60p"
sm[1].transform = "normal"
sm[1].display_x = 0
sm[1].display_y = 1100    'Bezel compensation of 20 pixels 
sm[1].enabled = true

sm[2].enabled = "false"
sm[3].enabled = "false"

vm.SetScreenModes(sm)