---
license: cc-by-4.0
tags:
- meter-reading
- gauge-reading
- meter
- gauge
---
This repository mainly consists of two parts: five files starting with `syncG`, which are the synthetic meter dataset, and the `scene_file` folder, which contains the scene files used for data generation.

For more detailed instructions on data generation, please visit: https://github.com/SKYWOWDYH/SyncG

Due to the large file size, the data files have been compressed into multiple volumes. We recommend downloading all files starting with `syncG` to the same directory and then unzipping them using the following commands in that directory:

```bash
zip -s- syncG.zip -O syncG_full.zip
unzip -q syncG_full.zip
```

After extraction, the dataset directory structure will be as follows:

```
syncG/
|-- annotations/
|   |-- test/
|   |-- train/
|-- images/
|   |-- test/
|   |-- train/
|-- masks/
    |-- test/
    |-- train/
```


### Data Card

 A reference table listing all annotation keys, their descriptions, and data types.


| **Field Name**            | **Description**                                              | **Data Type**      |
| ------------------------- | ------------------------------------------------------------ | ------------------ |
| **file_name**             | **Unique identifier prefix for the image  file.**            | **String**         |
| **gauge_type**            | **The category or type of the gauge  (e.g., pressure, voltmeter).** | **String**         |
| **width**                 | **Image width in pixels.**                                   | **Integer**        |
| **height**                | **Image height in pixels.**                                  | **Integer**        |
| **ground_truth**          | **The precise ground truth reading value  of the gauge.**    | **Float**          |
| **long_interval_degree**  | **Angle (in degrees) between adjacent  major scale marks relative to the dial center.** | **Float**          |
| **long_interval_value**   | **The numerical difference in value  between adjacent major scale marks.** | **Integer**        |
| **long_num**              | **Total number of major scale marks on  the dial.**          | **Integer**        |
| **start_value**           | **The initial (minimum) numerical value  of the gauge scale.** | **Integer**        |
| **small_interval**        | **Number of minor scale subdivisions  between two adjacent major marks.** | **Integer**        |
| **text_interval**         | **Frequency of label occurrence (number  of major marks per labeled value).** | **Integer**        |
| **pointer_rotate_degree** | **Deflection angle of the pointer from  its initial position to the current reading.** | **Float**          |
| **num_scalemark_before**  | **Count of major scale marks preceding  the current pointer position.** | **Integer**        |
| **min_scalemark**         | **The reading value of the major scale  mark immediately preceding the pointer.** | **Integer**        |
| **closest_scalemark**     | **The reading value of the major scale  mark spatially closest to the pointer.** | **Integer**        |
| **ann_camera_location**   | **The spatial coordinates [x, y, z] of  the camera in the 3D scene.** | **List [Float]**   |
| **homo_matrix**           | **3×3 matrix parameters for image  perspective correction (**homography matrix) | **List [Float]**   |
| **dial_bbox_annotations** | **Bounding box coordinates [x_min,y_min,x_max,y_max] for the gauge dial.** | **List [Integer]** |
| **text_bbox_annotations** | **List of objects containing bounding  boxes and values for numerical text labels.** | **List [Dict]**    |
| **seg_annotations**       | **Segmentation data (masks/polygons) for  scale marks and pointers.** | **List [Dict]**    |
| **keypoints_annotations** | **Keypoint**  **coordinates for pointer (origin/tip) and scale marks.** | **List [Dict]**  |
| **scene_name**            | **Filename of the HDRI map used for  background/lighting rendering.** | **String**         |
| **seed**                  | **Random seed used for synthetic  generation logic.**        | **Integer**        |