1. Page Preview

2. Function Introduction

2.1. Effect contrast

2.2. Using a process instance

A. Select the foreground channel, which contains the camera signal of the green/blue screen. Usually, the HDMI/SDI channel is chosen.

B. Select the background channel, which is used to replace the green/blue screen image. It can be a static image, another video channel, or a network live stream or file channel.

C. Click Start Color Extraction. Use the mouse to click on the area of the green/blue screen on the left, select about 4 to 8 points, including the center, edges, and shadow areas of the green screen.

D. Click Stop Color Extraction

E. Click Update. At this time, the algorithm will update the range of color key values.

F. Adjust the tolerance and select an appropriate value.

I. If the lighting environment of the green screen/blue screen changes, such as due to the variation of natural light over time, you can enable automatic update. However, the subject in the foreground should avoid blocking the color extraction points.

J. Save