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Your task is to evaluate the subjective quality of strokes in document images compared to the non-degraded reference image, using the evaluation criteria defined in these instructions and examples. This task can be completed in around 60 seconds.
IMPORTANT: do NOT work on this HIT without carefully reading the instructions first, even if you have worked on our HITs before, because instructions often change from one day to the other.
| Score | Quality | Deterioration |
| 5 | Excellent | Imperceptible |
| 4 | Good | Just perceptible smudged stroke, but not annoying. |
| 3 | Fair | Perceptible smudged stroke and slightly annoying. |
| 2 | Poor | Perceptible smudged stroke and very annoying. |
| 1 | Bad | The smudged stroke is impossible to be recognized. |
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