private void initMeasures() {
// the number of points on the map
MemoryUtil.printMemoryInMB("before initializing measures");
visibility = new FloatVector(number_points);
saliency = new ShortVector(number_points);
// meanVisibility = new UnsignedShortVector(number_points);
MemoryUtil.printMemoryInMB("after crating vis and saliency vectors");
System.out.println(y_res);
System.out.println(x_res);