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

var value; // Type: Vintasoft.Twain.WebAcquiredImageIsBlankResultJS

// Parameters
var maxNoiseLevel; // Type: number

value = instance.isBlank(maxNoiseLevel);

function isBlank(
   maxNoiseLevel
Maximum possible value of noise in image in percents. Optimal value is 0.01 (%).
 : number
) : WebAcquiredImageIsBlankResultJS;

Parameters

maxNoiseLevel

Maximum possible value of noise in image in percents. Optimal value is 0.01 (%).

Return Value

This function sends a synchronous request to check whether an image is blank. If you want to use asynchronous request instead of synchronous request, please use WebAcquiredImageJS.isBlankAsync function.

Reference

WebAcquiredImageJS Class
WebAcquiredImageJS Members