326 / 1544
Bixel values 2 or higher
1
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1
0
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2
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The “reducing levels” technique (Xia,
Verhey)
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326 / 1544
Bixel values 2 or higher
1
2
1
0
2
0
3
2
3
3
0
2
1
3
2
3
The “reducing levels” technique (Xia,
Verhey)