PNG Bug

[Filimoa]

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[Filimoa]

Note some PDF will "slice" up their images. We need to recombine these and that's what the new CombineSlicedImages transform does. Note it's pretty naive, if there's a single image on the page it combines everything together. This might be problematic with small logos.

There is still a bug that PNG will sometimes be flipped. Have not figured out the root cause.

You can hardcode something into _combine_images_in_group but this will break non flipped images. From what I understand we need to somehow get data from the Transformation Matrix to figure out an images orientation.

    def _combine_images_in_group(
        self, image_elements: List[ImageElement]
    ) -> ImageElement:
        """Combine a list of ImageElements into a single ImageElement."""
        if not image_elements:
            raise ValueError("No images to combine.")

        images = []
        for node in image_elements:
            image_data = base64.b64decode(node.image)
            image = Image.open(io.BytesIO(image_data))
            # image = image.rotate(180) # THIS 
            images.append(image)

_process_png_image in src/openparse/text/pdfminer/core.py should theoretically be responsible for this flipping operation.