Convert to Grayscale
The Convert to Grayscale command converts an RGB image to an intensity-equivalent grayscale image having RGB pixels. In the resulting image, each pixel value has R = G = B. The conversion is done by applying a weight to each of the R, G, and B channels, These weights can be the standard grayscale conversion values or can be set as desired (see below). To convert an RGB image to a 16-bit or 8-bit grayscale image having 1 channel per pixel, use the Convert to 8 bit Intensity or Convert to 16 bit Intensity commands.
The Convert to Grayscale command opens from the Image Window > Process > RGB Images menu and button on the Main Toolbar. The "immediate" form, shown first, opens when an image or image set is displayed in the top-most window. The general form can be used to select source images from folders, windows, or by matching templates.
Convert Grayscale Properties |
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Source Images |
Select the image or image window to process. |
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Color Intensity Factors |
Enter the weights to apply to R, G, and B channels. |
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<< Standard Values |
Click this button to reset the weights to the standard grayscale conversion values (0.292, 0.594, 0.114). |
This command allows you to specify the color balancing factors for weighting each channel in the RGB image. There is a standard formula for converting color data to equivalent intensity as perceived by the human eye. You can recover these standard settings by clicking the [Standard] button.
Working with RGB Images, Convert to 8-bit Intensity, Convert to 16-bit Intensity, Convert to RGB