Description: 一种基于感知模型的盲水印算法 ：根据Watson模型，结合仿射变换置乱技术和DCT量化系数奇偶特性，本文提出了一种在分块DCT中频交流系数中嵌
入有含义二值水印图像，以实现盲检测的水印方案。实验结果表明，该算法对于JPEG有损压缩、图像剪切等处理有很强的
鲁棒性。-a model based on the perception of the blind watermarking algorithm : According to Watson model, with affine transformation Scrambling Technology and DCT coefficient quantization Parity characteristics, This paper presents a block in exchange DCT coefficient meaning embedded in a binary image watermarking, Blind to achieve the watermark detection program. Experimental results show that the algorithm for JPEG lossy compression, image processing shear is very robust. Platform: |
Size: 225358 |
Author:ghostsx |
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Description: 一种基于感知模型的盲水印算法 ：根据Watson模型，结合仿射变换置乱技术和DCT量化系数奇偶特性，本文提出了一种在分块DCT中频交流系数中嵌
入有含义二值水印图像，以实现盲检测的水印方案。实验结果表明，该算法对于JPEG有损压缩、图像剪切等处理有很强的
鲁棒性。-a model based on the perception of the blind watermarking algorithm : According to Watson model, with affine transformation Scrambling Technology and DCT coefficient quantization Parity characteristics, This paper presents a block in exchange DCT coefficient meaning embedded in a binary image watermarking, Blind to achieve the watermark detection program. Experimental results show that the algorithm for JPEG lossy compression, image processing shear is very robust. Platform: |
Size: 225280 |
Author:ghostsx |
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Description: 实现图像数据的JPEG-LS标准的压缩，可以实现无损压缩也可以进行有损压缩-Realize image data standard JPEG-LS compression, lossless compression can be lossy compression can also be carried out Platform: |
Size: 4096 |
Author:小兵 |
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Description: 实现图像数据的JPEG-LS标准的压缩，可以实现无损压缩也可以有损压缩-Realize image data standard JPEG-LS compression, lossless compression can be achieved can also be lossy compression Platform: |
Size: 2048 |
Author:小兵 |
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Description: 实现图像数据的JPEG-LS标准的压缩，可以实现无损压缩也可以进行有损压缩-Realize image data standard JPEG-LS compression, lossless compression can be lossy compression can also be carried out Platform: |
Size: 3072 |
Author:小兵 |
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Description: 实现图像数据的JPEG-LS标准的压缩，可以实现无损压缩也可以进行有损压缩-Realize image data standard JPEG-LS compression, lossless compression can be lossy compression can also be carried out Platform: |
Size: 4096 |
Author:小兵 |
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Description: 实现图像数据的JPEG-LS标准的压缩，可以实现无损压缩也可以进行有损压缩-Realize image data standard JPEG-LS compression, lossless compression can be lossy compression can also be carried out Platform: |
Size: 2048 |
Author:小兵 |
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Description: 这是关于图象压缩的程序，包括有损压缩或无损压缩两类。用的是jpeg2000的压缩标准，但是这是jpeg2000的第一部分-This is the image compression procedures, including lossy compression or lossless compression of two categories. Using the JPEG2000 compression standard, but this is the first part of JPEG2000 Platform: |
Size: 3432448 |
Author:郑黎 |
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Description: JPEG 2000正式名称为ISO 15444，是一种基于离散小波变换的新型图像压缩方法，与基于离散余弦变换的JPEG压缩方法相比较，具有多分辨率表达、更好的去相关能力、高压缩比、按视觉模型量化等优点，并同时提供无损和有损压缩算法-JPEG 2000 is formally known as ISO 15444, is a discrete wavelet transform based on a new type of image compression methods, and based on the discrete cosine transform JPEG compression method, compared with the expression of multi-resolution, better related to ability, high compression ratio, by the visual model to quantify the advantages, as well as providing lossless and lossy compression algorithms Platform: |
Size: 762880 |
Author:zhenzhen |
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Description: 很不错的浙江大学博士论文。针对JPEGZooo算法的有损压缩，提出了改进的率失真算法，该算法可减少程序运行时间，且降低硬件实现时的内存消耗。
-Very good, Zhejiang University doctoral dissertation. JPEGZooo for lossy compression algorithm is proposed to improve the rate-distortion algorithm, which can reduce the run time and lower hardware realize at the time of memory consumption. Platform: |
Size: 6432768 |
Author:张旭 |
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Description: 分块有损压缩图像忽略了块间相关性，重构时会产生块效应，该文提出一种空域自适应去块效应算法。对块边缘采用方向自适应
有理滤波，以弱化块效应。根据块的内部活动性将图像块分成平坦块和纹理块2 类，利用基于方差的空域检测方法检测出平坦块，并对平
坦块进行邻块边缘自适应平滑。实验结果表明，该算法有效去除了块效应，一定程度上提高了信噪比，算法简单且鲁棒性较好。-Block lossy compression image ignores the inter-block correlation, Reconstruction would have a blocking effect, the paper presents a airspace Adaptive Deblocking Algorithm. To block the edge of rational use of the direction of adaptive filtering, in order to weaken the block effect. According to block the internal activity of the image block is divided into a flat block and texture block 2 categories, the use of airspace based on the variance detection methods to detect the flat block, and a flat block adjacent block edge adaptive smoothing. Experimental results show that the algorithm effectively blocking go except, to some extent, improve the signal to noise ratio, the algorithm is simple and better robustness. Platform: |
Size: 147456 |
Author:子登 |
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Description: DCT A discrete cosine transform (DCT) expresses a sequence of finitely many data points in terms of a sum of cosine functions oscillating at different frequencies. DCTs are important to numerous applications in science and engineering, from lossy compression of audio and images (where small high-frequency components can be discarded), to spectral methods for the numerical solution of partial differential equations. The use of cosine rather than sine functions is critical in these applications: for compression, it turns out that cosine functions are much more efficient (as explained below, fewer are needed to approximate a typical signal), whereas for differential equations the cosines express a particular choice of boundary conditions. Platform: |
Size: 8192 |
Author:iso |
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Description: 基于dct变换的水印算法，并进行有损压缩情形下的水印嵌入和提取-Dct transform based watermarking algorithm, and for lossy compression case the watermark embedding and extracting Platform: |
Size: 1024 |
Author:方磊 |
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Description: A distortion metric for the lossy compression of DNA microarray images Miguel_Hernandez-Cabronero-IEEE_DCC2013-A_distortion_metric_for_the_lossy_compression_of_DNA_microarray_images Platform: |
Size: 822272 |
Author:fangsm |
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Description: The name of the project is “RUN LENGTH ENCOADING”. In this project transmit the data use different compression Techniques. In these Techniques input date is to be encoded. By use the techniques the input data is to be compress .In this project it is possible to reduce the input data. To compress the original input data or to reduce the input data it will never effect the original information and it is possible to consume less power for data transmission. It is possible to transmit the data efficiently by using these methods here two compression methods are there. 1) Lossless compression and 2) Lossy compression method. In this project to compress the input data by using lossless compression technique. To this project by using Xilinx 9.1i simulator and to write the code by using VHDL module.-The name of the project is “RUN LENGTH ENCOADING”. In this project transmit the data use different compression Techniques. In these Techniques input date is to be encoded. By use the techniques the input data is to be compress .In this project it is possible to reduce the input data. To compress the original input data or to reduce the input data it will never effect the original information and it is possible to consume less power for data transmission. It is possible to transmit the data efficiently by using these methods here two compression methods are there. 1) Lossless compression and 2) Lossy compression method. In this project to compress the input data by using lossless compression technique. To this project by using Xilinx 9.1i simulator and to write the code by using VHDL module. Platform: |
Size: 207872 |
Author:gowtham |
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Search - lossy compression