 |
International Journal for Research Trends and Innovation
International Peer Reviewed & Refereed Journals, Open Access Journal
ISSN Approved Journal No: 2456-3315 | Impact factor: 8.14 | ESTD Year: 2016
Scholarly open access journals, Peer-reviewed, and Refereed Journals, Impact factor 8.14 (Calculate by google scholar and Semantic Scholar | AI-Powered Research Tool) , Multidisciplinary, Monthly, Indexing in all major database & Metadata, Citation Generator, Digital Object Identifier(DOI)
|
Issue: June 2026
Volume 11 | Issue 6
Review Result and Publication of Paper within : 2-3 days
Click Here For more DetailsFor Authors
Forms / Download
Published Issue Details
Editorial Board
Other IMP Links
Facts & Figure
Impact Factor : 8.14
Issue per Year : 12
Volume Published : 11
Issue Published : 121
Article Submitted : 24719
Article Published : 9358
Total Authors : 24865
Total Reviewer : 861
Total Countries : 169
Indexing Partner
Licence
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
|
Published Paper Details
|
|
| Paper Title: | OCR-Integrated Retrieval-Augmented Generation for Intelligent PDF Processing |
| Authors Name: | Eshani Patel , Yash Deep Singh Bais , Liza Patel |
| Download E-Certificate: | Download |
| Author Reg. ID: |
IJRTI_212689
|
| Published Paper Id: | IJRTI2605099 |
| Published In: | Volume 11 Issue 5, May-2026 |
| DOI: | |
| Abstract: | The pervasive digitization of institutional records has generated an extensive corpus of scanned, image-encoded PDF documents whose informational content remains inaccessible to conventional text-processing infrastructure. This paper presents and rigorously evaluates an integrated pipeline that unifies multi-engine Optical Character Recognition with semantic retrieval and large language model generation to enable natural language querying over arbitrary PDF documents. The proposed architecture deploys three parallel OCR engines—Tesseract 5.3, EasyOCR 1.7, and PaddleOCR 2.7—with quantitative output selection, followed by LangChain-orchestrated semantic chunking, 384-dimensional dense embedding via the all-MiniLM-L6-v2 sentence transformer, FAISS-indexed vector storage, and Retrieval-Augmented Generation inference over both locally deployed and API-backed large language models. Evaluation across a 42-document, 318-page heterogeneous corpus stratified into three document quality categories yields a FAISS Precision@5 of 0.78 and a Mean Reciprocal Rank of 0.86—representing a 17-percentage-point improvement over TF-IDF baselines. Human-assessed response correctness reached 74% under GPT-3.5-Turbo and 58% under the locally deployed Falcon-RW-1B model, at a mean query latency of 9.5 seconds. PaddleOCR achieved the lowest Word Error Rate of 9.7% on degraded documents, while Tesseract retains a marginal advantage on clean typeset material. The work provides a rigorous framework for OCR engine selection within retrieval-augmented pipelines—a design dimension absent from the prior integrated document intelligence literature. |
| Keywords: | Optical Character Recognition; Retrieval-Augmented Generation; Document Intelligence; FAISS; Semantic Embeddings; LangChain; PDF Processing; Large Language Models |
| Cite Article: | "OCR-Integrated Retrieval-Augmented Generation for Intelligent PDF Processing", International Journal for Research Trends and Innovation (www.ijrti.org), ISSN:2456-3315, Vol.11, Issue 5, page no.a796-a806, May-2026, Available :http://www.ijrti.org/papers/IJRTI2605099.pdf |
| Downloads: | 000106 |
| ISSN: |
2456-3315 | IMPACT FACTOR: 8.14 Calculated By Google Scholar| ESTD YEAR: 2016 An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 8.14 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator |
| Publication Details: |
Published Paper ID: IJRTI2605099
Registration ID:212689
Published In: Volume 11 Issue 5, May-2026
DOI (Digital Object Identifier):
Page No: a796-a806 Country: Raipur, Chhattisgarh, India Research Area: Computer Science & Technology Publisher : IJ Publication Published Paper URL : https://www.ijrti.org/viewpaperforall?paper=IJRTI2605099 Published Paper PDF: https://www.ijrti.org/papers/IJRTI2605099 |
| Share Article: | |
|
Click Here to Download This Article |
|
| Article Preview | |
|
|
|
Major Indexing from www.ijrti.org
| Google Scholar | ResearcherID Thomson Reuters | Mendeley : reference manager | Academia.edu |
| arXiv.org : cornell university library | Research Gate | CiteSeerX | DOAJ : Directory of Open Access Journals |
| DRJI | Index Copernicus International | Scribd | DocStoc |
ISSN Details
 |
 |
|
ISSN: 2456-3315
Impact Factor: 8.14 and ISSN APPROVED,
Journal Starting Year (ESTD) : 2016
DOI (A digital object identifier)
| Providing A digital object identifier by DOI.ONE How to Get DOI? |
Conference
Open Access License Policy
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Important Details
Join RMS/Earn 300
WhatsApp
Click Here
Click Here
Indexing Partner |
|||
| Copyright © 2026 - All Rights Reserved - IJRTI | |||