Illustrator javascript to open image for image tracing.

Tracing.jsx

var folderPath = "~/Desktop";
var fileName = "scanned.png";
var saveName = "scanned.svg";
var filePath = new File(folderPath + fileName);

open(filePath);

var rItems = activeDocument.rasterItems;

for(var i = 0; i<rItems.length; i++){
    var trObj = rItems[i].trace().tracing;
    trObj.tracingOptions.loadFromPreset("6 Colors");
    trObj.expandTracing();
}

redraw();

var saveFile = new File(folderPath + saveName);
var svgOption = new ExportOptionsSVG();
svgOption.coordinatePrecision = 7;
activeDocument.exportFile(saveFile,ExportType.SVG,svgOption);

activeDocument.close();