Implementation:Open compass VLMEvalKit Janus

Field	Value
source	VLMEvalKit
domain	Vision, Model_Architecture

Overview

VLM adapter for the Janus model enabling benchmark evaluation in VLMEvalKit.

Description

Janus inherits from BaseModel and wraps the Janus model for use within the VLMEvalKit evaluation framework. It initializes the model and tokenizer/processor from a HuggingFace model path (default: deepseek-ai/Janus-1.3B) and provides the generate_inner method for inference.

Usage

Register in vlmeval/config.py via supported_VLM and invoke through the standard evaluation pipeline.

Code Reference

Source: vlmeval/vlm/janus.py, Lines: L1-136
Import: from vlmeval.vlm.janus import Janus

Signature:

class Janus(BaseModel):
    INSTALL_REQ = True
    INTERLEAVE = True
    def __init__(self, model_path='deepseek-ai/Janus-1.3B', **kwargs): ...
    def generate_inner(self, message, dataset=None): ...

I/O Contract

Direction	Description
Inputs	message — list of dicts with type (text/image) and value; dataset — optional dataset name for custom prompting
Outputs	generate_inner() returns str (model response text)

Usage Examples

from vlmeval.vlm.janus import Janus
model = Janus(model_path='path/to/model')
response = model.generate_inner(message)

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Principle

Implementation

Heuristic

Environment