TAILIEUCHUNG - An effective reversible data hiding method based on Pixel-value-ordering

This paper presents a new effective reversible data hiding method based on pixel-valueordering (iGePVO-K) which is improvement of a recent GePVO-K method that recently is considered as a PVO-used method having highest embedding capacity. In comparison with GePVO-K method, iGePVO-K has the following advantages. First, the embedding capacity of the new method is higher than that of GePVO-K method by using data embedding formulas reasonably and reducing the location map size. Second, for embedding data, in the new method, each pixel value is modified at most by one, while in GePVO-K method, each pixel value may be modified by two. In fact, in the GePVO-K method, the largest pixels are modified by two for embedding bits 1 and by one for bits 0. This is also true for the smallest pixels. Meanwhile, in the proposed method, the largest pixels are modified by one for embedding bits 1 and are unchanged if embedding bits 0. Therefore, the stego-image quality in proposed method is better than that in GePVO-K method. Theoretical analysis and experiment results show that the proposed method has higher embedding capacity and better stego image quality than GePVO-K method. | An effective reversible data hiding method based on Pixel-value-ordering

• Cơ sở dữ liệu
• Reversible data hiding
• Pixel value ordering
• Pixel prediction
• Reversible data hiding method based
• GePVO K method
• Embedding capacity
• Distortion drift
• Histogram shifting
• Reversible data hiding in H 264/AVC
• Pyramidal structure
• Image quality
• Original images
• Data hiding
• Difference expansion
• Multiple bit planes
• Stego image
• High embedding capacity
• Predictive coding
• báo cáo khoa học
• báo cáo hóa học
• công trình nghiên cứu về hóa học
• tài liệu về hóa học
• cách trình bày báo cáo