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Geek S06 Firmware Update 2021/08/25

Today we updated Geek S06 series firmware with Chroma Key added.

Chroma key is mostly used in virtual production like weather broadcast. In a chroma key  two images are combined using a special technique and a color from one image is removed, revealing another image behind it. This technique is also referred to as color keying, color seperation overlay, green screen or blue screen.

A very common use for chroma key is computer generated graphics. It’s simple to connect an external computer to the switcher via HDMI port. If you render a green or blue background on your animations, you can then key this green or blue to create fast and clean animations of any length. Keying is easy as the green/blue is computer generated so they are very flat colors to key.

key

Background

A full screen image; in the case of a chroma key it is often a weather map

Fill

The image you plan to display on top of your background video. In the case of a chroma key, this is video of the meteorologist in front of the green screen.

Key/Cut 

In the case of a chroma key the key/cut signal is generated from the fill signal.

Performing a chroma key

Oton Geek S06 features an advanced chroma keyer with user friendly adjustment options. These controls help you achieve the best key, improving the blend of foreground and background so you can create a more convincing visual effect.

  1. Select background and fill source
  2. Log in web back end, select Application settings > PIP Buttons Preset
  3. Select Key for PIP1/2/3/4 and click Apply
  4. Select Chroma Key, choose color mode, LAB mode is suggested.
pip key
chroma key config. 1
  • Choose a representative area of your green/blue screen that covers as much of the luminance range of the screen as possible by dragging the slider or input numbers of Ref X and Ref Y(normally you don’t need to do this, it will key automatically after you press the PIP button)
  • Press the corresponding PIP button to enable keying.

Fine Tuning your key by adjusting Scale

Once you have achieved a good chroma sample that removes most of your green screen while generally retaining foreground elements, its time fine tune your key with the controls. color adjustment(see above image). The color adjustment sliders move the edge of your keyed area in or out, helping to remove background elements from the very edge of your foreground or extending the foreground out a little if your key is too aggressive. This can be especially useful with fine details like hair. We recommend moving this slider until the edge of your key is generally clean, without any

background artifacts visible. Using the scale controls, your foreground elements should be cleanly separated from the background.

Note:L for Brightness, A for Green and Red, B for blue and yellow.For example if you are using green background, then simply adjust A, if you are using blue background, simply adjust B

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