from transformers import Qwen2_5_VLForConditionalGeneration, AutoProcessor
from PIL import Image
model = Qwen2_5_VLForConditionalGeneration.from_pretrained(
"OX-PIXL/SpatialThinker-7B",
torch_dtype="auto",
device_map="auto"
)
processor = AutoProcessor.from_pretrained("OX-PIXL/SpatialThinker-7B")
image = Image.open("your_image.jpg")
width, height = image.size
template = f"""You FIRST observe the image in <observe> </observe> tags, then visualise the relevant scene graph in <scene> </scene> tags, followed by thinking about the reasoning process as an internal monologue within <think> </think> tags and then provide the final answer. The final answer MUST BE put within <answer> </answer> tags, and only return the final choice including the correct option and answer within the answer tags, e.g., <answer> (A) cat </answer>.
Image size: {width} x {height}"""
question = "Where is the cat relative to the couch? (A) on top of (B) in front of (C) behind (D) beside"
messages = [
{
"role": "user",
"content": [
{"type": "image", "image": image},
{"type": "text", "text": template + "\n\n" + question},
],
}
]
text = processor.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
inputs = processor(text=[text], images=[image], return_tensors="pt").to(model.device)
generated_ids = model.generate(**inputs, max_new_tokens=1024)
output = processor.batch_decode(generated_ids, skip_special_tokens=True)[0]
print(output)