var instance = new Vintasoft.Imaging.ImageProcessing.WebImageSharpeningCommandJS();

var value; // Type: number
value = instance.get_OverlayAlpha();

function get_OverlayAlpha() : number;

1 - High Pass result is overlayed without transparency; otherwise, output image is converted to Bgra32 and High Pass result is overlayed using selected Alpha value. Default value is 1.