دراسة مقارنة: اكتشاف حافة Canny-LoG باستخدام اكتشاف حافة Canny-Prewitt باستخدام ترميز Huffman لإخفاء الصور
DOI:
https://doi.org/10.36602/ijeit.v13i2.550الكلمات المفتاحية:
Least Significant Bit, image steganography, hybrid edge detection, dilation, Canny, LoG, Prewittالملخص
إن أمن تدفق البيانات يشكل مصدر قلق كبير للشبكة العامة التي هي الإنترنت. تقوم طريقة أمان نقل البيانات التي تسمى التخفي بإخفاء الرسالة داخل حاوية وسائط، مثل الصورة. مما لا شك فيه أن الوسائط لا يمكنها حمل الكثير من البيانات المضمنة. نظرًا لأن منطقة حافة الصورة يمكنها تحمل تقلبات قيمة البكسل بشكل أفضل من المركز، يتم استخدام منطقة الحافة لاستيعاب بتات الرسالة الإضافية. في هذه الدراسة، تمت مقارنة كاشفات Canny-Log الهجينة وكاشفات Canny-Prewitt الهجينة ببعضها البعض في الصور الملونة وتوسيع حوافها بواسطة عنصر البنية [5 × 5]، وإخفاء صورة الدرجات الرمادية في اكتشافات تلك الحواف بعد ضغطها بواسطة تشفير هوفمان. توفر طريقة الكاشفين المدمجة هذه مساحة حافة أكبر لزيادة حمولة الرسالة مع الحفاظ على الصور المخفية غير المحسوسة. كان الكاشف الهجين Canny-LoG أفضل في سعة التضمين (EC) فيما يتعلق بعدد البكسلات المتاحة للإخفاء. بالإضافة إلى ذلك، تم الحصول على نتائج جيدة في مقاييس الجودة متوسط الخطأ التربيعي (MSE)، ونسبة الإشارة إلى الضوضاء القصوى (PSNR) لصورة ستيجو.
التنزيلات
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