method MagickImage.prototype.sigmoidalContrastimport { MagickImage } from "https://dotland.deno.dev/x/lume@v1.14.1/deps/imagick.ts"; sigmoidalContrast(contrast: number): voidsigmoidalContrast(contrast: number, midpointPercentage: Percentage): voidsigmoidalContrast(contrast: number, midpoint: number): voidsigmoidalContrast(contrast: number,midpoint: number,channels: Channels,): voidParameterscontrast: numberReturnsvoidParameterscontrast: numbermidpointPercentage: PercentageReturnsvoidParameterscontrast: numbermidpoint: numberReturnsvoidParameterscontrast: numbermidpoint: numberchannels: ChannelsReturnsvoid