Analyzing the Statistical Properties of the Segmented Annotations
Area Distribution of Annotations and ProposalsWe analyze the distibution of the are of the annotations. To do so, we compute the cumulative density function as the percentage of objects that are smaller than a certain percentage of the image area.
In the right plot we can observe significant differences between techniques, illustrated for instance by the percentage of proposals whose area is below 5% of the image area: 73% in case of GOP and 34% for GLS. In all cases, the percentage of small objects is even more significant in COCO, although GOP gets close.