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--- |
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license: eupl-1.2 |
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language: |
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- en |
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--- |
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# Vuurwerkverkenner |
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This dataset is utilized by the Vuurwerkverkenner application to link fragments of exploded (heavy) fireworks to their |
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originating firework types. You can explore the application |
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at [www.vuurwerkverkenner.nl](https://www.vuurwerkverkenner.nl). The dataset includes various firework types examined in |
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casework by the Netherlands Forensic Institute. |
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## Categories |
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Firework wrappers that closely resemble each other visually may be grouped into categories. Typically, a wrapper stands |
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alone without resemblance to others, forming a category with one unique wrapper. |
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## Contents |
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The dataset comprises 217 categories, featuring a total of 347 unique wrappers. It |
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is organized as follows: |
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``` |
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reference_data |
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└───bigboy |
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└─── big boy xl |
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└─── wrapper.png |
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└─── compleet exemplaar.png |
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└─── bigboy |
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└─── wrapper.png |
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└─── compleet exemplaar.png |
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└───atomyc |
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└─── atomyc 3 |
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└─── wrapper.png |
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└─── compleet exemplaar.png |
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└─── gedemonteerd.png |
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└───meta.json.gz |
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``` |
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The top-level folders (`bigboy`, `atomyc`, ...) indicate the firework categories. The next level (`big boy xl`, |
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`atomyc 3`, ...) |
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identifies specific wrappers within each category. For each wrapper, one or more images may be included. At a minimum, |
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`wrapper.png`, a scan of the complete wrapper, is present. Additional images, like photographs of the whole firework |
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article or schematic drawings of its internals, may also be available. |
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In `meta.json.gz`, both metadata and reference embeddings for each firework category are stored. It aligns in structure |
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as follows: |
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``` |
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{ |
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"bigboy": { |
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"big boy xl": { |
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"embeddings": [[...], [...], ...], |
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"wrappers": { |
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"wrapper_text": "abcdef", |
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"article_name": "abc", |
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... |
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}, |
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}, |
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}, |
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} |
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``` |
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The first level (`meta['bigboy']`, `meta['butterfly']`, ...) denotes the firework category corresponding to the top level |
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of photo folders (e.g., `meta[0]` matches the folder `bigboy`). The second level (`meta['bigboy']['big boy xl']`, |
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`meta['bigboy']['bigboy']`, ...) identifies individual wrappers within the category, aligning with the second level of |
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photo folders (e.g., `meta['bigboy']['big boy xl']` corresponds to `bigboy/big boy xl`). Each wrapper holds reference |
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embeddings and metadata. The third level, such as `meta['bigboy']['big boy xl']['wrappers']`, aligns with a specific |
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wrapper's photo folder (like `bigboy/big boy xl/wrapper.png`). Embeddings stored at this level are used to compare |
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embeddings of uploaded images in the application with. |
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### _Reference embeddings_ |
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Reference embeddings are provided for each category. These are generated by an AI model trained to create embeddings for |
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firework wrappers and exploded wrapper snippets. When snippets from a category are fed into the model, they should yield |
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similar embeddings to those for the wrappers. For further details on the model, |
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see [here](https://huggingface.co/NetherlandsForensicInstitute/vuurwerkverkenner). |
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### _Metadata_ |
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Metadata for each wrapper includes various fields, described as follows: |
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| Field | Description | |
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|------------------------------|-------------------------------------------------------------------| |
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| `text` | Full text present on the wrapper (excluding non-Latin alphabets). | |
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| `endangerment` | The level of danger or risk associated with the firework. | |
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| `article_name` | The name of the item. | |
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| `firework_type` | The type of firework. | |
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| `firework_category` | The category or classification of the firework. | |
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| `tube_length` | The length of the tube. | |
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| `tube_diameter` | The diameter of the tube. | |
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| `composition_burst_charge` | The composition of the main charge of the firework. | |
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| `composition_other_mixtures` | The composition of other charges of the firework. | |
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| `mass_burst_charge` | The mass of the main charge. | |
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| `mass_other_mixtures` | The mass of other charges. | |
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