Authors | سعید آسعیدی - سیدعلی محمدیه |
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Conference Title | چهارمین کنفرانس بین المللی جبر محاسباتی، نظریهی محاسباتی اعداد و کاربردها (یادبود پروفسور علیرضا اشرفی) |
Holding Date of Conference | 2023-07-04 - 2023-07-06 |
Event Place | 1 - کاشان |
Presented by | دانشگاه کاشان |
Presentation | SPEECH |
Conference Level | International Conferences |
Abstract
Blind watermarking algorithms are designed to embed a watermark into a digital file without requiring the original file for extraction. Here we present a new blind algorithm to embed a watermark into an official letter which is resistant against different attacks such as rotation either in clock wise or anti-clock wise direction and cropping.
tags: Blind Watermarking, Official Letters, Letter Body Detection, Cryptography