The evaluation is based on Dice coefficient.

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## Submission Format

n order to reduce the submission file size, our metric uses run-length encoding on the pixel values. Instead of submitting an exhaustive list of indices for your segmentation, you will submit pairs of values that contain a start position and a run length. E.g. '1 3' implies starting at pixel 1 and running a total of 3 pixels (1,2,3).

The competition format requires a space delimited list of pairs. For example, '1 3 10 5' implies pixels 1,2,3,10,11,12,13,14 are to be included in the mask. The pixels are one-indexed
and numbered from top to bottom, then left to right: 1 is pixel (1,1), 2 is pixel (2,1), etc.

The metric checks that the pairs are sorted, positive, and the decoded pixel values are not duplicated. It also checks that no two predicted masks for the same image are overlapping.

The file should contain a header and have the following format. Each row in your submission represents a single predicted nucleus segmentation for the given id.
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