String[] overlayKeys = new String[] {"VectorOverlay", "InputLut",
"OutputLut", "ROI", "BleachROI", "MeanOfRoisOverlay",
"TopoIsolineOverlay", "TopoProfileOverlay", "LinescanOverlay"};
overlayOffsets[0] = ras.readInt();
overlayOffsets[1] = ras.readInt();
overlayOffsets[2] = ras.readInt();
channelColorsOffset = ras.readInt();
addSeriesMeta("TimeInterval", ras.readDouble());