Proportional Transportation Distance
Description of the user interface

Query image selection
On the top you can select a query fish. You can either ask for a random fish or select one by entering a number.
Epsilon
When you submit a query, the images which are closer than epsilon are returned.
Vantage objects
You can experiment with the choice of vantage objects. Selecting different objects will result in different results. The vantage approach can underestimate distances. This effect is especially clear when few vantage objects are chosen. You can type in a comma separated list of numbers in the box.
Demo
Go to the demo.