Project description

It’s almost hopeless to find a parking place on streets of Kyiv, Ukrainian capital city. Yet it’s possible to incure a millions of losses from a municipal parking buiseness for years in row. We decided to figure out what is real situation on this market, and compared official financial statements about parking lots with real picture(s).
Most of the drivers do not use parking machines. Instead they could hand a twenty hryvnias (about 1 USD) for a parking assistant, without asking for a receipt. Next, parking worker at the end of a day could pay with a small part of cash through the parking machine, but take the rest of money for himself.
Thus, we decided to assess how much money one might actually collect from a downtown parking lots. So we recorded some of the parking places on video and then calculated the number of cars (and possible income from parking fee).
Next we compared our results with open-data financial statements from the KPTS (community-owned enterprise in charge of parking places) for these parking lots for the same period of time.
The difference is huge: for all three parking lots we recorded on video the income could be 5-10 times bigger then officially reported amounts

What makes this project innovative?

Technology: To show evidence for our findings we made custom "video player" (programmed in JS) to quickly scroll on many hours of footage for each parking lot. So in our widget one could hover on chart with a car counts and see a corresponding video-frames for this moment in time.
We also used another way to present visual evidence. It was made by selecting the single line of pixels which crossed parking zone on each video frame. Next we "stitched" such lines together in one image, for the working time of each parking. We called such a photo visualization "compressed parking time" --- when couple of hours of video represented as one image. You could see one of examples as a featured image in this application entry.
Journalism: For the first time we obtained an estimation how much money city are loosing on municipal parking places in form of missed income.

What was the impact of your project? How did you measure it?

The project became part of more broad efforts and discussions about role of cars/parking lots in the city . Our findings were used by activists who are trying to persuade city council to start a reform in municipal parking service, which is ongoing now

Source and methodology

We recorded a set of (24-hours per day, three days in row) videos for three different parking lots. Then we processed video footage and counted number of cars on each lot during all time (and hence the possible amount of money as a parking fee).
Official financial results for these parking places were obtained from open-data portal of city council (http://gis.kievcity.gov.ua/)
Finally, we compared these two numbers for each day on each parking lot, and presented their along with a video evidence about number of parked cars.
To read more about our methodology please see this detailed article on Medium, in English: https://medium.com/@texty.org.ua/parkings-title-c988ba6241f4

Technologies Used

Ffmpeg for all kinds of video processing
Javascript (d3.js) to create interactive data visualization for this investigation
OpenCV and Python to get data from video and create "compressed parking time" photo viz

Project members

Olexandr Oximets - video, data acquisition and analysis
Vlad Gerasymenko - web development and JS programming
Yevheniia Drozdova - web development
Nadja Kelm - design
Anatoliy Bondarenko - OpenCV programming
Maria Klokova - data analysis

Link

Additional links

Project owner administration

Contributor username

Followers

Click Follow to keep up with the evolution of this project:
you will receive a notification anytime the project leader updates the project page.