Threshold Binary

Threshold Binary filter converts grayscale or color images to a high-contrast, black-and-white images. The user can specify a certain level as a threshold. All the pixels lighter than the threshold are converted to a white and all the pixels darker than the threshold are converted to a value. Threshold Binary filter is useful for determining the lightest and darkest areas of the image.

To use the Threshold Binary filter:

Choose Filters > Thresholds > Binary.