Зменшення відхилень координат точок внаслідок вбудовування цифрових водяних знаків у векторні зображення

Abstract

The paper analyzes the problem of large deviations of individual points of the vector image after embedding watermark. To solve the given problem the selection method suitable for embedding matrix coefficients of discrete cosine transform, a change which does not lead to significant variations of position. To do this, before embedding conditions used to compare coefficients of a certain limit, which determines the maximum possible change in the coefficients due to watermark embedding.