Image Enhancement for Low Contrast Document (IELCD)¶
This is an amazing AI Vision filter used to improve the quality of low contrast documents.
Please check https://www.doubango.org/SDKs/anpr/docs/Features.html#image-enhancement-for-night-vision-ienv for more technical information.
Configuration entry: ielcd_enabled
Below you can see the filter applied on a random image found on Google using terms “low contrast document”. The original image (may be subject to copyrights) is at https://images.ukdissertations.com/101/0488365.008.jpg.