共查询到20条相似文献,搜索用时 15 毫秒
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基于对最低比特位匹配密写方法及利用图像直方图对其进行密写分析方法的研究,提出了一种基于直方图信息表补偿的最低比特位密写方法。该方法在密写过程中定义动态改变的直方图信息表,以记录图像秘密信息嵌入位置像素的增减,并根据信息表内的记录在下一次同样灰度值的像素嵌入秘密信息时对直方图信息表进行补偿处理,而总体原则是尽量保证密写后的直方图信息表变化最小。实验表明,经本方法密写后的图像直方图基本保持了原有峰值和变化趋势等属性,对一些针对图像直方图攻击方法有很好的效果。 相似文献
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Multimedia Tools and Applications - Histogram modification is one of the most successful reversible data hiding methods. Among many histogram-modification techniques, difference-histogram-based... 相似文献
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为了提高对高精度原始图像LSB匹配数字隐写的检测能力,提出了基于直方图特性的LSB匹配隐写分析方法.根据高精度原始图像在LSB匹配数字隐写过程前后灰度直方图、差分直方图以及小波分解后的子带系数直方图的特性差异,提取了23维的特征向量,并使用支持向量机对其进行训练,建立区分载体图像与载密图像的分类器达到检测秘密信息的目的.实验结果表明,该方法在性能上要优于文献[5]的局部极值法. 相似文献
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Liu Xiaokang Tian Hui Huang Yongfeng Lu Jing 《Multimedia Tools and Applications》2019,78(7):8447-8461
Multimedia Tools and Applications - Although a large number of steganography algorithms based on algebraic-code-excited-linear-prediction have been proposed, their performance, such as embedding... 相似文献
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提出一种改进的基于亮度直方图帧差的自适应镜头分割算法,该方法包括突变镜头的检测过程和渐变镜头的渐变过程,这两个处理过程由相邻两帧的亮度直方图帧差与自适应阈值的比较来自动进行选择,在突变镜头的检测过程中加入隔帧帧差法检测闪光灯,渐变镜头的检测采用基于帧间差方差的方法。实验结果表明,改进算法具有很好的检测效果,且计算复杂度低,易于实现。 相似文献
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This paper proposes a novel data hiding method using pixel-value difference and modulus function for color image with the large embedding capacity(hiding 810757 bits in a 512×512 host image at least) and a high-visual-quality of the cover image. The proposed method has fully taken into account the correlation of the R, G and B plane of a color image. The amount of information embedded the R plane and the B plane determined by the difference of the corresponding pixel value between the G plane and the median of G pixel value in each pixel block. Furthermore, two sophisticated pixel value adjustment processes are provided to maintain the division consistency and to solve underflow and overflow problems. The most importance is that the secret data are completely extracted through the mathematical theoretical proof. 相似文献
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Hui-Lung Lee Author Vitae Author Vitae Ling-Hwei Chen Author Vitae 《Journal of Systems and Software》2010,83(12):2528-2535
In steganography, several different types of media have been used as carriers, such as images, audios and video streams, to hide secret data. Nevertheless, various novel media and applications have been developed due to the rapid growth of internet. In this paper, we select maze games as carrier media to conceal secret data. The original idea of embedding data in a maze is proposed by Niwayama et al. Their method has two disadvantages. One is the very small embedding capacity; the other is that the stego maze is not perfect. Here, we propose an improved algorithm for increasing the embedding capacity and preserving the “perfect” property. 相似文献
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《Computers & Electrical Engineering》2013,39(2):488-496
Embedding of confidential data in the least significant bit of an image is still an attractive method of steganography. Utilizing the full capacity of cover images by embedding one bit of data per pixel, using methods such as LSB flipping or LSB matching, usually decreases the security, making the algorithm vulnerable to steganalytic attacks. And then, it is proposed by an efficient high payload ±1 data embedding scheme(EPES) based on a special two variable binary function. This function uses the information of the least two significant bit planes of the cover image for the embedding and extraction purposes. Rather than randomly selecting +1 or −1, EPES achieves higher embedding efficiencies by choosing the correct modification component. The steganalytic method based on sample pair analysis (SPA) cannot effectively detect EPES. Hence, we propose a steganalysis by constructing adjacency pixel bits structure (SAP). The resulting detection algorithm is simple and fast. Analytical and experimental results demonstrate that the proposed method provides higher detecting efficiency than the other steganalysis. 相似文献
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为了提供较大的秘密信息嵌入量并保持良好的载密图像质量,提出了一种基于FCM(模糊聚类)和HVS(人眼视觉特性)的图像隐写方法。该方法将对比度和梯度敏感度作为特征向量,并通过模糊C均值聚类将像素分为视觉敏感类与视觉不敏感类;采用模算子隐写法将较多秘密信息嵌入属于视觉不敏感类的像素,而将较少秘密信息嵌入属于视觉敏感类的像素。实验结果表明,与SMFH方法相比,该方法具有更大的嵌入量。 相似文献
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Multimedia Systems - Under the premise of ensuring good speech quality and resistance to steganalysis, how to embed as much information as possible into low-bit-rate speech is a challenge. The... 相似文献
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为了使图像分割算法能够满足实时性要求,针对Otsu法计算量大的问题,将类间方差进行连续域扩展,推导出速度较快的黄金分割法;应用灰度差分直方图进行分割,能够根据多尺度灰度差分直方图得到候选集,将搜索次数减少到候选集中元素个数,计算量小、速度快;结合两者可以实现图像的快速分割。仿真实验和实际应用表明,该方法不仅分割效率高,而且能够得到很好的分割效果。 相似文献
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Han Chunling Xue Rui Zhang Rui Wang Xueqing 《Multimedia Tools and Applications》2018,77(12):15431-15455
Multimedia Tools and Applications - Steganography and Steganalysis have attracted a lot of attention in decades. Recently, voice communication has been more and more popular, which provides ways to... 相似文献
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Zhong Shangping Jia Cunmin Chen Kaizhi Dai Peng 《Multimedia Tools and Applications》2019,78(7):8017-8039
Multimedia Tools and Applications - Most steganalysis methods based on deep learning don’t distinguish the image texture complexity, but rather to mix all images for training. As a result,... 相似文献
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《微型机与应用》2017,(22):53-57
为了降低动态变化的背景对运动目标提取的干扰,使用颜色差分直方的方法来降低由于背景不稳定、光照强度变化造成的错误。首先计算一个位置点所在的小邻域内像素之间的差值。其次,使用高斯隶属度函数的模糊关系做颜色差分。最后,提出一种新的模糊颜色差分直方图,即采用模糊C-means聚类和颜色差分结合的方法。模糊C-means聚类聚类算法在颜色差分直方图中的使用可以降低计算的直方图的维数较大的复杂性,也降低了背景因强度变化而产生的移动假象或背景照明度的变化而产生的影响。随机选择两个视频帧集合来测试该方法。仿真结果表明,该算法在一些复杂的视频序列场景中能够表现出较好的性能和结果。 相似文献