Image -size invariance: One of the disadvantages of OSRA is that its predictions depend on the actual size of the drawn structures. OSRA has been developed on typical 300 dpi images of patents, therefore the size dependency is irrelevant in our production environment for converting patent images to structures but needs to be kept in mind when processing other images. Similarly, we see some chemical structure relative size to the overall image size dependency for DECIMER, SwinOCSR, OCMR, and MolScribe as well.