---
datasets:
- Subh775/Traffic-Perception-VL
language:
- en
base_model:
- vikhyatk/moondream2
pipeline_tag: image-text-to-text
library_name: transformers
license: apache-2.0
tags:
- moondream2
- VLM
---

# Perception-moondream2

**Perception-moondream2** is a specialized Vision-Language Model (VLM) fine-tuned for dense urban traffic scene understanding. Built on top of the highly efficient `moondream2` architecture, this model is designed to analyze CCTV and traffic camera feeds to generate highly detailed, comprehensive textual descriptions of traffic conditions.

## Model Details
- **Base Model:** [vikhyatk/moondream2](https://huggingface.co/vikhyatk/moondream2) (Revision: 2024-08-26)
- **Architecture:** Vision Encoder + Phi-1.5 Text Decoder
- **Task:** Dense Image Captioning & Visual Question Answering (VQA)
- **Language:** English

## Training Data
The model was fine-tuned on the [Subh775/Traffic-Perception-VL](https://huggingface.co/datasets/Subh775/Traffic-Perception-VL) dataset. This dataset consists of complex, real-world urban traffic scenes (such as bustling streets in Bengaluru, India). 

The training focused on teaching the model to accurately perceive and describe:
- **Vehicle Types & Colors:** Identifying auto-rickshaws, scooters, motorcycles, and cars.
- **Traffic Density & Flow:** Estimating congestion levels and movement.
- **Pedestrian Activity:** Tracking people walking on sidewalks or crossing streets.
- **Infrastructure:** Recognizing road layouts, lanes, shops, signage, and greenery.

## Intended Use Cases
- **Smart City Analytics:** Automated monitoring of CCTV feeds to detect congestion or accidents.
- **Traffic Management:** Generating real-time text logs of intersection activity.
- **Autonomous Driving Context:** Providing dense contextual descriptions for self-driving datasets.

## Usage 

Because this model relies on the custom Moondream2 architecture, you will need to use `trust_remote_code=True` when loading it via the `transformers` library.

### Prerequisites
Make sure you have the required libraries installed:
```bash
!pip install transformers==4.44.2 "huggingface_hub<1.0" accelerate pillow einops
```

### Load Tokenizer & Model
```python
import torch
from transformers import AutoModelForCausalLM, AutoTokenizer
from PIL import Image
import requests

model_id = "Subh775/Perception-moondream2"

tokenizer = AutoTokenizer.from_pretrained(model_id)

model = AutoModelForCausalLM.from_pretrained(
    model_id,
    trust_remote_code=True,
    torch_dtype=torch.float16,
    # REMOVED device_map="auto"
)
# move to the GPU
model = model.to("cuda")
model.eval()
```

# Inference
```python
image_path = "path_to_image"
image = Image.open(image_path).convert("RGB")

enc_image = model.encode_image(image)

# Give it explicit instructions & explicitly ban the geographic bias.
prompt = (
    "Describe this traffic scene in detail. Focus strictly on the vehicles, "
    "pedestrians, infrastructure, and traffic density. Do not mention Bengaluru, "
    "India, or any specific geographic locations."
)

answer = model.answer_question(enc_image, prompt, tokenizer)

banned_phrases = ["in Bengaluru, India", "in Bengaluru", "Bengaluru, India,", "Bengaluru,"]
for banned in banned_phrases:
    answer = answer.replace(banned, "")

print(answer.strip())
```