Enhanced Textual Data Reconstruction from Scanned Receipts Using Normalized Cross-Correlation and Deep Learning-Based Recognition with Superior Analytical Robustness and Computational Efficacy

Text extraction from images plays a crucial role in optical character recognition applications such as invoices and receipt recognition. The recent character recognition approaches work well for good-quality scanned receipts, but they fail to do the same for low-quality receipts, offering reduced accuracy instead. This paper proposes invoice receipt identification using normalized cross-correlation-based template matching and a novel auto-text extraction approach using a deep learning algorithm. The proposed technique includes three major steps, preprocessing, character recognition and post-processing. The first step, which commences with preprocessing, involves noise removal, quality enhancement and image de-skewing. In the second step, auto-text extraction is carried out using a deep learning algorithm. The final post-processing step includes configuring the extracted text and exporting it to Word/Excel. According to the experimental results, the accuracy of the proposed approach outperformed existing approaches.