imageforllm 0.3.3

A library for embedding code and plot properties into matplotlib images for LLM context

ImageForLLM 🖼️

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A free lunch for LLM recognition images 🍱

Overview 🔍

ImageForLLM enables embedding source comment and plot properties into matplotlib images, particularly useful when sharing plots with Large Language Models (LLMs). This allows the LLM to understand how the plot was generated and what it represents. It also supports adding metadata to AI-generated images for better context.

Easyuse ✨

With just TWO lines, it can automatically add the information of the generated image in the metadata of the image generated by matplotlib for you without any additional operations.

For LLM or other readers, the content of the picture can be quickly understood through this information.

import imageforllm
imageforllm.hook_image_save()

Installation 📦

pip install imageforllm

The package requires Pillow for metadata embedding:

pip install Pillow

Features ✅

• Embed source comment that generated a plot into the image metadata
• Automatically extract and embed plot properties (titles, labels, etc.)
• Add AI generation metadata (model, prompt, parameters) to AI-generated images
• Extract embedded comment, properties, and AI metadata from images
• Command-line tools for extracting metadata from images and adding AI metadata
• Get all metadata as JSON for easy integration with other tools

Usage 🚀

Basic Workflow for Matplotlib

import matplotlib.pyplot as plt
import numpy as np
import imageforllm

# 1. Hook matplotlib's savefig function
imageforllm.hook_image_save()

# 2. Define your plot comment as a string
plot_source_comment = """
It make work for a wave plot.
"""

# 3. Create your plot
x = np.linspace(0, 10, 100)
y = np.sin(x)
plt.plot(x, y)
plt.title('Sine Wave')
plt.xlabel('Time')
plt.ylabel('Amplitude')

# 4. Save with embedded comment and auto-extracted properties
plt.savefig('sine_wave_plot.png', create_comment=plot_source_comment)

# 5. (Optional) Unhook when done
imageforllm.unhook_image_save()

Adding AI Metadata to Images

import imageforllm

# Add AI generation metadata to an existing image
model = "stable-diffusion-xl-1.0"
prompt = "A serene mountain landscape with a lake reflecting the sunset"
parameters = {
    "seed": 42,
    "guidance_scale": 7.5,
    "num_inference_steps": 50
}

imageforllm.add_ai_metadata('ai_generated_image.png', model, prompt, parameters)

Extracting Metadata 🔄

import imageforllm

# Get all metadata from an image as a JSON-serializable dictionary
all_info = imageforllm.get_all_metadata_json('image.png')

# Access embedded comment
comment = all_info.get('source_comment')
print(comment)

# Access plot properties
properties = all_info.get('plot_properties')
print(properties)

# Access AI metadata
ai_model = all_info.get('ai_model')
prompt = all_info.get('prompt')
parameters = all_info.get('parameters')
print(f"Model: {ai_model}, Prompt: {prompt}")

# Extract only AI-specific metadata
ai_metadata = imageforllm.extract_ai_metadata('ai_generated_image.png')
print(ai_metadata)

Command-line Extraction 🖥️

The package includes command-line tools for working with metadata:

# Extract and print comment
python -m imageforllm.extract image.png

# Extract and print all metadata
python -m imageforllm.extract image.png --info

# Extract only plot properties
python -m imageforllm.extract image.png --properties

# Extract only AI metadata
python -m imageforllm.extract image.png --ai

# Output in JSON format
python -m imageforllm.extract image.png --json

# Save extracted comment to a file
python -m imageforllm.extract image.png -o extracted_comment.py

Adding AI Metadata via Command Line

# Add AI metadata to an image
python -m imageforllm.ai_metadata image.png --model "stable-diffusion" --prompt "mountain landscape" --parameters '{"seed": 42}'

Limitations ⚠️

• Metadata embedding is primarily supported for PNG format
• When saving to file-like objects, metadata embedding is not supported
• The package cannot automatically determine the comment that generated a plot; you must provide it as a string

How It Works 🔧

1. The package hooks matplotlib's savefig function
2. When saving, it captures any provided source comment and automatically extracts plot properties
3. It embeds this metadata into the PNG image using Pillow
4. For AI-generated images, you can add model, prompt, and parameter information
5. Metadata can later be extracted from the image using the provided functions or command-line tools

Example 📝

See the included examples/saveandread.py for an example of saving and reading metadata, and examples/ai_metadata_example.py for working with AI-generated images.

API Reference 📚

Main Functions

• hook_image_save(): Replaces matplotlib's savefig with a version that embeds metadata
• unhook_image_save(): Restores the original savefig function
• get_image_info(image_path): Extracts metadata from an image file
• get_all_metadata_json(image_path): Gets all ImageForLLM-specific metadata (source comment, plot properties, and AI metadata) as a JSON-serializable dictionary. Only returns metadata defined in this library, not any other image data.
• add_ai_metadata(image_path, model, prompt, parameters=None): Adds AI generation metadata to an image
• extract_ai_metadata(image_path): Extracts only AI-specific metadata from an image

Constants

• METADATA_KEY_COMMENT: Key for source comment in metadata dictionary
• METADATA_KEY_PROPERTIES: Key for plot properties in metadata dictionary
• METADATA_KEY_AI_MODEL: Key for AI model information
• METADATA_KEY_PROMPT: Key for generation prompt
• METADATA_KEY_PARAMETERS: Key for additional parameters

License 📄

MIT