var instance = new Vintasoft.Twain.WebAcquiredImageJS(twainDeviceManager, imageId, imageInfo);

var value; // Type: any

// Parameters
var contrastValue; // Type: number

value = instance.changeContrast(contrastValue);

function changeContrast(
   contrastValue
The contrast value in percents. Valid values are from -100 to 100. Default value is 0. Contrast is not changed if value of this property is set to 0.
 : number
) : any;

Parameters

contrastValue

The contrast value in percents. Valid values are from -100 to 100. Default value is 0. Contrast is not changed if value of this property is set to 0.

This function sends a synchronous request to change contrast of image. If you want to use asynchronous request instead of synchronous request, please use WebAcquiredImageJS.changeContrastAsync function.

Reference

WebAcquiredImageJS Class
WebAcquiredImageJS Members