Dataset Viewer
The dataset viewer is not available for this split.
Cannot load the dataset split (in streaming mode) to extract the first rows.
Error code: StreamingRowsError
Exception: CastError
Message: Couldn't cast
index: int64
split: string
template: string
viewport: list<item: int64>
child 0, item: int64
scale: double
theme: string
img_size: list<item: int64>
child 0, item: int64
n_elements: int64
elements: list<item: struct<type: string, bbox_xyxy: list<item: double>, text: string>>
child 0, item: struct<type: string, bbox_xyxy: list<item: double>, text: string>
child 0, type: string
child 1, bbox_xyxy: list<item: double>
child 0, item: double
child 2, text: string
image: struct<bytes: binary, path: string>
child 0, bytes: binary
child 1, path: string
label: string
to
{'image': Image(mode=None, decode=True), 'label': Value('string')}
because column names don't match
Traceback: Traceback (most recent call last):
File "/src/services/worker/src/worker/utils.py", line 147, in get_rows_or_raise
return get_rows(
dataset=dataset,
...<4 lines>...
column_names=column_names,
)
File "/src/libs/libcommon/src/libcommon/utils.py", line 272, in decorator
return func(*args, **kwargs)
File "/src/services/worker/src/worker/utils.py", line 127, in get_rows
rows_plus_one = list(itertools.islice(safe_iter(ds, dataset=dataset), rows_max_number + 1))
File "/src/services/worker/src/worker/utils.py", line 483, in safe_iter
yield from ds.decode(False) if ds.features else ds
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2840, in __iter__
for key, example in ex_iterable:
^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2373, in __iter__
for key, pa_table in self._iter_arrow():
~~~~~~~~~~~~~~~~^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2398, in _iter_arrow
for key, pa_table in self.ex_iterable._iter_arrow():
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 536, in _iter_arrow
for key, pa_table in iterator:
^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 419, in _iter_arrow
for key, pa_table in self.generate_tables_fn(**gen_kwags):
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 343, in _generate_tables
self._cast_table(pa_table, json_field_paths=json_field_paths),
~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 132, in _cast_table
pa_table = table_cast(pa_table, self.info.features.arrow_schema)
File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2378, in table_cast
return cast_table_to_schema(table, schema)
File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2306, in cast_table_to_schema
raise CastError(
...<3 lines>...
)
datasets.table.CastError: Couldn't cast
index: int64
split: string
template: string
viewport: list<item: int64>
child 0, item: int64
scale: double
theme: string
img_size: list<item: int64>
child 0, item: int64
n_elements: int64
elements: list<item: struct<type: string, bbox_xyxy: list<item: double>, text: string>>
child 0, item: struct<type: string, bbox_xyxy: list<item: double>, text: string>
child 0, type: string
child 1, bbox_xyxy: list<item: double>
child 0, item: double
child 2, text: string
image: struct<bytes: binary, path: string>
child 0, bytes: binary
child 1, path: string
label: string
to
{'image': Image(mode=None, decode=True), 'label': Value('string')}
because column names don't matchNeed help to make the dataset viewer work? Make sure to review how to configure the dataset viewer, and open a discussion for direct support.
Windows UI Synthetic Dataset (ui_synth_v2)
Description
A synthetic dataset of 3 000 Windows-style UI screenshots with bounding box annotations for interactive UI elements. Designed for training lightweight object detectors to serve as a computer-vision fallback in Windows UI automation agents.
Classes
| ID | Class | Description |
|---|---|---|
| 0 | button | Clickable buttons |
| 1 | textbox | Text input fields |
| 2 | checkbox | Checkbox controls |
| 3 | dropdown | Dropdown/combobox selectors |
| 4 | icon | Clickable icons |
| 5 | tab | Tab controls |
| 6 | menu_item | Menu items in sidebars/menus |
Generation Method
Screenshots are generated by rendering HTML/CSS templates with Playwright (Chromium). Each template represents a common Windows UI pattern (login form, settings panel, dialog, file explorer, etc.).
Domain randomization includes:
- Light/dark themes with random accent colors
- Multiple font families (Segoe UI, Arial, Tahoma, Verdana, Calibri)
- Variable viewport sizes (1280x720, 1440x900, 1920x1080)
- Random device scale factors (1.0, 1.25, 1.5)
- Random text content (English)
- Post-rendering augmentation: JPEG compression, blur, noise, brightness/contrast jitter
Templates (10): login, settings, table, dialog, sidebar, modal, dropdown_open, tabs, toolbar, form_long.
Bounding boxes are extracted directly from DOM getBoundingClientRect() queries on elements marked with data-ui attributes, ensuring pixel-accurate annotations without manual labeling.
Label Format
Labels are provided in YOLO format: one .txt file per image with lines of class_id cx cy w h (normalized 0-1 coordinates).
Dataset Structure
ui_synth_v2/
├── images/
│ ├── train/
│ ├── val/
│ └── test/
├── labels/
│ ├── train/
│ ├── val/
│ └── test/
├── data.yaml
└── meta.jsonl
Splits
| Split | Images |
|---|---|
| train | 2 400 |
| validation | 300 |
| test | 300 |
| total | 3 000 |
Intended Use
- Training UI element detectors for Windows UI automation fallback
- Research in synthetic data generation for GUI understanding
- Benchmarking object detection on UI-specific domains
Limitations
- Synthetic data only — may not cover all real-world UI patterns
- English text only
- Windows 10/11 style only; does not cover macOS, Linux, or web UIs
- Simple element classes; does not detect complex composite widgets
License
MIT
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