Output catalog of the sliding-window CNN visualized. The input image given to the CNN was the same as in Fig. 1. The detected streaklets in the CNN output catalog are drawn in their predicted coordinates, and the pixel brightness corresponds to the prediction label certainty of the CNN, i.e., the darkest pixels have the highest predicted labels. Streaks with predicted labels of smaller than 0.5 are left out. Pixels with overlapping streaks have been set to the highest predicted label value between those streaks. In this example, the CNN method has detected all asteroids except for the practically invisible asteroid I. There are multiple false-positive detections, although their prediction labels typically have lower values than the asteroid streaks. The six streaks caused by a bright star below asteroid E are notable exceptions.