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[mpeg mp3] 离散余选变换 DL : 0: 这是个DCT与IDCT的VC++下的源代码，直接运行就行。
Date : 2009-03-02 Size : 134.23kb User : yantian
[mpeg mp3] v2-1180 DL : 0: 介绍了ＩＥＥＥ１１８０-１９９０标准离散余弦变换精度测试的指标及计算公式，对采用ＤＣＴ的编解码器如mpeg2的一致性测试有比较大的帮助-Introduction of IEEE1180-1990 standard discrete cosine transform accuracy test indicators and calculation formula for the use of DCT codecs such as mpeg2 consistency test has more help
Date : 2025-12-23 Size : 19kb User : 江巧微
[mpeg mp3] Implementation_and_improvement_of_MPEG4_video_encr DL : 0: 探讨了基于zigzag置乱的MPEG4视频数据加密技术，指出了这种方案在安全性方面的不足，提出了改进方案。改进的方案中AC系数用不同的置乱表置乱，DC系数用高强度的加密算法AES加密。最后给出了改进后的加密效果，并且从加密速度，安全性和码流变化三个指标衡量了该方案的应用价值。 -Discussion based on the zigzag Scrambling MPEG4 video data encryption technology, pointing out that such a program in the security deficiencies, suggestions to improve the program. Improvement program with a different AC coefficient table Scrambling Scrambling, DC coefficient of high-strength encryption algorithm AES encryption. Finally, the effect of the improved encryption, and from the encryption speed, safety and code changes in the three indicators to measure the flow of the program application value.
Date : 2025-12-23 Size : 162kb User : 吴笛
[mpeg mp3] DCT-HT DL : 0: MPEG-2到H.264帧内图像转码。实现了YUV图像到bmp图像的转换。 -MPEG-2 to H.264 intra transcoding images. Achieved a YUV image to bmp image conversion.
Date : 2025-12-23 Size : 973kb User : 李石
[mpeg mp3] Y1107125[1] DL : 0: 随着网络和通信系统的高速发展，交互式计算机和电视技术的普遍应用，以及现代远程教育技术的迫切需要，人们对多媒体数据的编码、解码技术提出了更高的要求。近几年来，视频压缩技术发展迅速，新的视频标准不断推出。MPEG-4是国际运动图像专家组[MPEG]在继MPEG-1和MPEG-2之后，制订的又一个ISO/IEC标准，即ISO/IEC 14496。它能够获得更高的音/视频压缩率，且具有基于内容的交互能力。目前MPEG-4也正在不断的修订，以提出更好的压缩及解压算法，在质量有损最小的前提下，获得更好的压缩效果。本文结合目前视频标准的发展情况，对基于对象的视频编码标准MPEG-4进行了深入的研究，对MPEG-4的编解码结构及视频层次化的数据结构进行了分析，并对编解码的关键技术，如：形状编解码、运动估计和运动补偿以及纹理编解码进行了研究，对其中的核心技术DCT/IDCT变换、逆量化、变长编解码、半像素精度搜索、DC和AC系数的预测等进行了详细的分析。针对MPEG-4 SVP模型，本文介绍了它的解码的详细过程，并结合实际要求，对解码算法进行了优化，给出了解码的软件实现，最后给出了系统的实现情况和测试结果。-无
Date : 2025-12-23 Size : 3.5mb User : jppp
[mpeg mp3] DCTdomainMPEG7DominantColordescriptorextraction.ra DL : 0: DCT域中MPEG7主色描述符的提取,该文在MPEG7的基础上提出了DCT域内直接提取主色描述符的新方法.这种方法节省了对图像的解压缩的过程，因而大大的提高了对于压缩图像进行特征提取的速度和效果.作为整个算法的一部分，一种自动阂值提取的算法也在该文中给予了描述.这种方法可以减少因人为设定经验闭值而带来的不确定性，使算法更具鲁棒性.对比检索试验结果也说明本算法是一个高速有效的算法.新算法主要用于压缩图像库或互联网上的相似检索. -DCT domain MPEG7 Dominant Color descriptor extraction, the article at the basis of MPEG7 proposed DCT domain directly from the main color of the new method descriptor. This method saves the image in the process of decompression, which greatly enhance the compressed image for feature extraction speed and effectiveness. as part of the whole algorithm, an automatic threshold algorithm for extracting the text is also given to the description. This method can reduce the threshold to set the experience brought about by non- uncertainty, so that a more robust algorithm. Comparison Search results also shows that the algorithm is a fast and effective algorithm. The new algorithm used to compress the image database or a similar search on the Internet.
Date : 2025-12-23 Size : 394kb User : 杨康
[mpeg mp3] BlockMatchingAlgoMPEG DL : 0: motion compensation agar kisi ko chahiye to mujhe mail karo ... ok ye sirf 1 file hai-motion compensation agar kisi ko chahiye to mujhe mail karo ... ok ye sirf 1 file hai..
Date : 2025-12-23 Size : 116kb User : prince2028
[mpeg mp3] ViCandMPEGJPEGE DL : 0: HuffmanExp 哈夫曼编码 JpgVSbmp Jpg和Bmp格式相互转换的API封装 RWJpegExp JpegVC++类 VbTestDll VB调用Jpg和Bmp格式相互转换API函数的示例 jpeg jpeg中的前向DCT变换 JPEG2000压缩编码技术源代码 vcSDll VCD2000AV卡的API函数封装 DvrDll PV988卡的API函数封装 DvsCode 监控录像系统源代码 \avi2mpg1_src 中包含了mpeg1编码的源程序 \avi2mpg1 中为该程序的可执行文件 \A2MGUI 为VC下编译的图形用户界面。 \mp3en mepg 层3音频编码程序 \mp3de mpeg 层3音频解码程序等等，很多很全面-HuffmanExp Huffman Coding JpgVSbmp Jpg and Bmp format conversion between API package RWJpegExp JpegVC++ classes VbTestDll VB calls Jpg and Bmp format conversion between jpeg jpeg example of API functions prior to the DCT transform in JPEG2000 compression coding technology source code vcSDll VCD2000AV card API function package DvrDll PV988 card API function package DvsCode surveillance video system source code \ avi2mpg1_src contains mpeg1 encoded source \ avi2mpg1 in the program' s executable file \ A2MGUI for the VC compiled graphical user interface . \ mp3en mepg Layer 3 audio coding process \ mp3de mpeg layer 3 audio decoding process, etc., a lot of very comprehensive
Date : 2025-12-23 Size : 14.13mb User : 张明晨
[mpeg mp3] mpeg2_idct_hw DL : 0: 2-D的DCT/IDCT在軟硬體上的verilog code-dct/idct source code for soc
Date : 2025-12-23 Size : 10.3mb User : 陳伯綸
[mpeg mp3] DCT DL : 0: this function block an Arbitrary image and take dct from each block. for check quality of reconstructed image calculated PSNR.
Date : 2025-12-23 Size : 19kb User : mff2009
[mpeg mp3] DCTyinxie DL : 0: 图像的DCT变换域的隐写matlab程序代码-DCT transform domain image steganography matlab code
Date : 2025-12-23 Size : 3kb User : fanmengdi