Checklist HAIO 2024 Summer National Final · CV-1 task
Hidden Treasure
English title: Elrejtett Kincs
Restore flipped photographs and use EasyOCR to read the characters hidden in them, combining them into a geographic coordinate.
The task
John Smart finds an old book of photographs of natural wonders with strange characters printed on them. The contestant must read the characters from all photographs and combine them into a single geographic coordinate, printed in the format "Final Coordinate is: N 12° 11,504' E 34° 1,528'" (the example value is deliberately wrong).
Task 1 (4 points): implement a PyTorch Dataset for the camera images that can also apply transforms. Task 2 (3 points): the images were corrupted by being flipped both vertically and horizontally; write transforms that restore them and build a DataLoader with batch size 1 and random order. Task 3 (13 points): run the provided EasyOCR reader (English) over all images, find every hidden coordinate fragment and print the final coordinate in the required format.
Abridged by SOTA from the official materials. The official statement has the exact rules, and it wins wherever this summary differs.
At a glance
- You get
- A folder of photographs (originally
hegyek.zip, downloaded with gdown) and an initialised easyocr.Reader(['en']). - You submit
- The completed notebook, which prints the decoded coordinate in the specified format.
- Scoring
- 20 points in total (4 + 3 + 13); graded by the organisers.
- Rules
- Keras and TensorFlow are not allowed; any PyTorch-based tool may be used.
- Format
- Summer National Final (Nyári Országos Döntő), held on site at the ELTE Faculty of Informatics, Budapest, on 30 May 2024. Solved in Google Colab; the completed notebook is downloaded as .ipynb and uploaded, zipped together with the other solutions, to the CMS.