Kanizsa Illusory Contour (kani2) Dataset with Border-Ownership Annotations

# Annotations for an illusory Kanizsa (kani2) dataset This repository contains annotations for an illusory Kanizsa (kani2) dataset. These annotations were developed to support research in **border ownership representation**, **disparity-based segmentation**, and **figure-ground organization** in synthetic depth stimuli. The dataset was used in both Chen et al. (SciRep, 2025) and Chen et al. (bioRxiv, 2025) > NOTE: This dataset complements the previously released > Chen T. (2025). *Border Ownership and Category Annotation Extended from Virtual KITTI 2* [Data set], > Zenodo DOI: [https://doi.org/10.5281/zenodo.15375453](https://doi.org/10.5281/zenodo.15375453) > Chen, T. (2025). *Random Dot Stereogram (rds4) Dataset with Border Ownership Annotation (Version v1)* [Data set].> Zenodo. DOI: https://doi.org/10.5281/zenodo.16423201 --- ## Contents This dataset provides the following additions:- **Border ownership maps** — 2-channel directional annotations representing ownership along contours (Chen et al., 2022)- **Disparity maps** — Absolute (Near) disparity representations (synthetic disparity=2 pixels) - **Instance-level contour maps** — Extended labeling for object-level border continuity- **Scripts** — MATLAB and Python utilities to read, write and display `.flo`-formatted annotations > For a complete specification of annotation file formats, see [DATAFORMAT.md](./DATAFORMAT.md). --- ## License This dataset is released under the **Creative Commons Attribution-ShareAlike 4.0 International (CC-BY-SA 4.0)** license. By using this dataset, you agree to:- Attribute this dataset appropriately- Share any derivative work under the **same ShareAlike terms (CC-BY-SA 4.0)** See `LICENSE.txt` for full legal terms. --- ## References - Chen, T., Cheng, X., & Tsao, T. (2022). *Border Ownership, Category Selectivity and Beyond*. In: Bebis, G. et al. (eds), Advances in Visual Computing. ISVC 2022, LNCS, vol 13599, Springer, Cham. [https://doi.org/10.1007/978-3-031-20716-7_3](https://doi.org/10.1007/978-3-031-20716-7_3) - Tianlong Chen, Xuemei Cheng, Thomas Tsao et al. *Understanding and Simulating Border Ownership Centered Segmentation*, Sci Rep 15, 43881 (2025). https://doi.org/10.1038/s41598-025-18843-9 - Tianlong Chen and Xuemei Cheng (2025). *A Unified Mechanism for Depth Perception and Figure-Ground Organization*, bioRxiv preprint (2025). https://doi.org/10.64898/2025.12.10.693427 --- ## Contact For questions or collaboration inquiries, please contact: **Tianlong Chen** Email: [[e-mail]](mailto:[e-mail])