Table 1: Effect of changing the block size of the summed error term image with a prediction region of 3 × 3 pixels. For the predictable image a prediction region of four orthogonal neighbours with a block size of 5 × 5 pixels was used.

Total countsBlock sizeMean squared error

287055 × 50.87
287056 × 60.86
287057 × 70.86

544695 × 52.12
544696 × 62.10
544697 × 72.14

1089385 × 56.61
1089386 × 66.56
1089387 × 77.04