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منتديات شباب فلسطين - عرض مشاركة واحدة - مين عندو علم بالwatermark .. العلامة المائية
عرض مشاركة واحدة
قديم 05-04-2012, 06:58 PM   #5
~ | Mazaj
Hakuna Matata
 
الصورة الرمزية ~ | Mazaj

قوة السمعة: 50 ~ | Mazaj has a reputation beyond repute~ | Mazaj has a reputation beyond repute~ | Mazaj has a reputation beyond repute~ | Mazaj has a reputation beyond repute~ | Mazaj has a reputation beyond repute~ | Mazaj has a reputation beyond repute~ | Mazaj has a reputation beyond repute~ | Mazaj has a reputation beyond repute~ | Mazaj has a reputation beyond repute~ | Mazaj has a reputation beyond repute~ | Mazaj has a reputation beyond repute

افتراضي رد: مين عندو علم بالwatermark .. العلامة المائية

هلقيت ححط الاسئلة وجاوب عليها بالراحة .. بس متاخدش راحتك كتير ههههه

اول اشي شو هي الووتر مارك وكيف بتستخدموها في الصور

وشو الالجوريثم الي بتستخدموها عشان تعملو تضمين للعلامة جوا الصورة

ادا بتعرف تقنية spread spectrum وكيف استخدموها بالووتر مارك

the embedding of a robust multibit watermark is accomplished through casting several zero-bit watermarks
onto specified coefficients. The image watermark, a random sequence of Gaussian distribution in our case, is casted
multiple times onto the selected coefficients preserving the same sequence length but shifting the start point of
casting by one place. Actually the final watermark that is embedded into the image is not a single sequence but many different sequences generated with different seeds. These sequences are casted, one after the other, on the mid
coefficients of the image.

ايش يعني الكلام .. عمرو مر عليك او لمحتو هان ولا هان



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