کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6884497 1444268 2017 40 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A simple and effective image-statistics-based approach to detecting recaptured images from LCD screens
ترجمه فارسی عنوان
یک روشی ساده و موثر مبتنی بر آمار تصویری برای تشخیص تصاویر مجددا از صفحه نمایش ال سی دی
کلمات کلیدی
پزشکی قانونی دیجیتال، تشخیص تصویر بازداشت شده، صفحه نمایش ال سی دی، آمار تصویر ضریب همبستگی، ماشین بردار پشتیبانی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
چکیده انگلیسی
It is now extremely easy to recapture high-resolution and high-quality images from LCD (Liquid Crystal Display) screens. Recaptured image detection is an important digital forensic problem, as image recapture is often involved in the creation of a fake image in an attempt to increase its visual plausibility. State-of-the-art image recapture forensic methods make use of strong prior knowledge about the recapturing process and are based on either the combination of a group of ad-hoc features or a specific and somehow complicated dictionary learning procedure. By contrast, we propose a conceptually simple yet effective method for recaptured image detection which is built upon simple image statistics and a very loose assumption about the recapturing process. The adopted features are pixel-wise correlation coefficients in image differential domains. Experimental results on two large databases of high-resolution, high-quality recaptured images and comparisons with existing methods demonstrate the forensic accuracy and the computational efficiency of the proposed method.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Digital Investigation - Volume 23, December 2017, Pages 75-87
نویسندگان
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