How to use from the
Use from the
Transformers library
# Use a pipeline as a high-level helper
from transformers import pipeline

pipe = pipeline("image-text-to-text", model="zss01/BiPS")
messages = [
    {
        "role": "user",
        "content": [
            {"type": "image", "url": "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/p-blog/candy.JPG"},
            {"type": "text", "text": "What animal is on the candy?"}
        ]
    },
]
pipe(text=messages)
# Load model directly
from transformers import AutoProcessor, AutoModelForImageTextToText

processor = AutoProcessor.from_pretrained("zss01/BiPS")
model = AutoModelForImageTextToText.from_pretrained("zss01/BiPS")
messages = [
    {
        "role": "user",
        "content": [
            {"type": "image", "url": "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/p-blog/candy.JPG"},
            {"type": "text", "text": "What animal is on the candy?"}
        ]
    },
]
inputs = processor.apply_chat_template(
	messages,
	add_generation_prompt=True,
	tokenize=True,
	return_dict=True,
	return_tensors="pt",
).to(model.device)

outputs = model.generate(**inputs, max_new_tokens=40)
print(processor.decode(outputs[0][inputs["input_ids"].shape[-1]:]))
Quick Links

BiPS — Bi-directional Perceptual Shaping for Multimodal Reasoning

This model card describes BiPS (Bi-directional Perceptual Shaping), a training-time framework proposed in “See Less, See Right: Bi-directional Perceptual Shaping For Multimodal Reasoning” [CVPR 2026].

What is BiPS?

Many VLMs fail on multimodal reasoning because they look at the wrong visual evidence (especially for charts, thin lines, intersections, and small regions). BiPS improves question-conditioned visual grounding by turning “where-to-look” supervision into training signals—without requiring extra tools at inference time.

Key idea

BiPS trains a VLM with two complementary view transformations:

  • Evidence-Preserving View: keep only the visual evidence needed to answer, reduce distractions.
    → enforce consistency between predictions from the original image and the preserved view.

  • Evidence-Ablated View: remove the key evidence so the image no longer supports the answer.
    → enforce separation so the model cannot rely on shortcuts.

These constraints are typically implemented with KL-based objectives and can be integrated into GRPO training.

Why it matters

  • Better fine-grained evidence alignment
  • Less “guessing” from language priors
  • No additional inference overhead (views are used only during training)

How to use

BiPS is mainly a training recipe. To apply it:

  1. Follow the official repo to set up dependencies and scripts.
  2. Train your base VLM with BiPS-generated preserve/ablate views.
  3. Use the resulting checkpoint as a standard VLM at inference time (no extra steps).

Citation

@article{zhang2025bips,
  title={See Less, See Right: Bi-directional Perceptual Shaping For Multimodal Reasoning},
  author={Zhang, Shuoshuo and Zhang, Yizhen and Fu, Jingjing and Song, Lei and Bian, Jiang and Yang, Yujiu and Wang, Rui},
  journal={arXiv preprint arXiv:2512.22120},
  year={2025}
}
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