To extract a color plane from an image in Vision Assistant, follow these steps:
- Add the Color Plane Extraction step from the list of Color Processing Functions.
- In the Setup window, choose the desired color plane. The Processing Window will display a preview of the resulting grayscale image.
- Click OK.
A 32-bit color image is encoded in memory as either an RGB (Red, Green, Blue) or an HSL (Hue, Saturation, Luminance) image. RGB images store color information using 8 bits each for the red, green, and blue planes. HSL images store color information using 8 bits each for hue, saturation, and luminance. In both cases, the alpha plane is not used.Figure 1. RGB FormatFigure 2. HSL Format
To convert the color image to an 8-bit grayscale image, you can simply extract the desired 8-bit plane from the color image.