Table 9

Number of times for checking the processed neighbor pixels [8]

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

(11)

(12)

(13)

(14)

(15)

(16)

Avg.

He et al. [7]

4

3

4

3

1

1

1

1

4

3

4

3

1

1

1

1

2.25

He et al. [8]

3

2

3

2

1

1

1

1

3

2

3

2

1

1

1

1

1.75

Others

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

4

Sutheebanjard and Premchaiswadi EURASIP Journal on Image and Video Processing 2011 2011:14   doi:10.1186/1687-5281-2011-14