public boolean equals(ImageData a) {
if (rows != a.getNumRows()) return false;
if (cols != a.getNumCols()) return false;
if (bands != a.getNumBands()) return false;
double[][][] avals = a.getValues();
int len1 = values.length;
int len2 = values[0].length;
int len3 = values[0][0].length;
for (int i = 0; i < len1; i++)
for (int j = 0; j < len2; j++)
for (int k = 0; k < len3; k++) if (values[i][j][k] != avals[i][j][k]) return false;
return true;
}
