Generates synthetic symbol sequence deletion tasks. The goal is to delete a target symbol at a specific position from a sequence, with the animation showing the symbol fading out and remaining symbols shifting left to close the gap.

Each sample pairs a task (first frame + prompt describing what needs to happen) with its ground truth solution (final frame showing the result + video demonstrating how to achieve it). This structure enables both model evaluation and training.

# Clone the repository
git clone https://github.com/Jiaqi-Gong/Gong_VBVR_Data.git
cd Gong_VBVR_Data/O-58_symbol_delete_data-generator

# Install dependencies
pip install -r requirements.txt

# Generate 100 samples
python examples/generate.py --num-samples 100

# Generate with specific seed
python examples/generate.py --num-samples 100 --seed 42

# Generate without videos
python examples/generate.py --num-samples 100 --no-videos

# Custom output directory
python examples/generate.py --num-samples 100 --output data/my_output

Delete red ● at position 6. The animation shows the target symbol fading out, then the remaining symbols shifting left to close the gap.

Initial Frame Symbol sequence with target symbol	Animation Symbol fading out and shifting	Final Frame Sequence after deletion

Delete a target symbol at a specific position from a sequence, with the animation showing the symbol fading out and remaining symbols shifting left to close the gap.

• Sequence Length: 5-9 symbols (before deletion)
• Symbol Set: Shapes (circles, triangles, squares, stars, diamonds, hearts, etc.)
• Symbol Colors: 20 distinct colors (rainbow 7 + extended 13)
• Target Symbol: Rainbow-colored symbol (red, orange, yellow, green, blue, indigo, violet)
• Position: 1-indexed position in sequence
• Symbol Size: 85 pixels (adjustable 40-120)
• Animation: Fade out target symbol, then shift remaining symbols left

• Sequence manipulation: Tests ability to understand sequence operations
• Position awareness: Requires identifying specific position in sequence
• Visual animation: Clear fade-out and shift animation
• Color coding: Target symbols use rainbow colors for easy identification
• Symbol variety: Multiple symbol types and colors for diversity
• Smooth transitions: Smooth fading and shifting animations

data/questions/symbol_delete_task/symbol_delete_00000000/
├── first_frame.png          # Initial state (sequence with target symbol)
├── final_frame.png          # Goal state (sequence after deletion)
├── prompt.txt               # Task instructions
├── ground_truth.mp4         # Solution video (16 fps)
└── question_metadata.json   # Task metadata (symbols, positions, etc.)

File specifications: Images are 1024×1024 PNG. Videos are MP4 at 16 fps, approximately 2-3 seconds long.

symbol-delete sequence-manipulation symbol-editing abstraction position-reasoning visual-animation