public MatrixSignal getByteNoise(int width, int height) {
Sample2D[][] result = new Sample2D[width][height];
for (int i = 0; i < width; i++) {
for (int j = 0; j < height; j++) {
ShortSampleValue value = new ShortSampleValue((int) (Math
.random() * 255));
Point2D point = new Point2D(i, j);
result[i][j] = new ShortSample2D(point, value);
}
}