Function detect_document_segmentation_in_path 

pub fn detect_document_segmentation_in_path(
    path: impl AsRef<Path>,
) -> Result<Vec<RectangleObservation>, VisionError>

Available on crate feature rectangles only.

Detect a full document’s boundary in the image at path. Returns at most one rectangle (the document outline).

Errors

Returns VisionError::ImageLoadFailed / VisionError::RequestFailed.