The Leeds Cows dataset by Derek Magee consists of 14 different video sequences showing a total of 18 cows walking from right to left in front of different backgrounds and with varying lighting conditions. Some test sequences contain severe interlacing and MPEG compression artifacts and significant noise. Altogether, the test suite consists of 2217 frames, in which 1682 instances of cows are visible by at least 50% (and some more are visible by a smaller fraction).

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