motleycrew.utils.image_utils

Utilities for working with images in LLM contexts.

Functions

convert_image_to_png(image_bytes, ...)	Convert image bytes to PNG format if the source format is unsupported.
human_message_from_image_bytes(image_bytes, ...)
image_file_to_bytes_and_mime_type(image_path)	Create a HumanMessage containing an image represented as bytes
is_this_a_chart(image_bytes, mime_type, llm)

motleycrew.utils.image_utils.convert_image_to_png(image_bytes: bytes, source_mime_type: str) → Tuple[bytes, str]

Convert image bytes to PNG format if the source format is unsupported.

Uses LibreOffice for EMF/WMF (which ImageMagick can’t handle on Linux), and Wand/ImageMagick for other formats. For supported formats (JPEG, PNG, GIF, WebP), returns original bytes unchanged.

Parameters:

• image_bytes – Raw image bytes

• source_mime_type – MIME type of the source image

Returns:

Tuple of (converted_bytes, mime_type). Returns original if already supported.

motleycrew.utils.image_utils.human_message_from_image_bytes(image_bytes: bytes, mime_type: str) → HumanMessage

motleycrew.utils.image_utils.image_file_to_bytes_and_mime_type(image_path: str) → Tuple[bytes, str]

Create a HumanMessage containing an image represented as bytes

Parameters:

image_path – Path to the local image file

Returns:

HumanMessage containing the image content

motleycrew.utils.image_utils.is_this_a_chart(image_bytes: bytes, mime_type: str, llm: BaseLanguageModel) → bool