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- integral DCT transformation 整数DCT变换
- The critical part in video compression, DCT transformation, is also analysed. 同时,对视频压缩的关键技术-DCT变换算法也进行了较详细的分析。
- This method firstly used two-dimensional chaos to generate template.After DCT transformation, graph's frequency component was added with the template. 首先利用时空二维混沌直接生成信息模板,加入到作品图像离散余弦变换(DCT)域的频率成分中去。
- A data compress method based on DCT transform has been proposed in order to used the detecting system in a narrow bandwidth network. 为了能在窄带数据网络上实现远程实时监测,本文从采样数据自身的特点出发,提出了基于离散余弦变换的电能质量数据压缩方法。
- Combined with FSVQ algorithm, the traditional DCT transform and integer DCT transform are used to improve the performance of image compression. 对经典DCT变换和整数DCT变换进行研究,并把它们和有限状态矢量量化编码算法相结合,提高了对图像的压缩性能。
- The experimental results show that DCT transform is more efficient for predicion processed MCFD images than original ones. 实验结果表明 ,所提出的 MCFD图像的预测处理方法对提高编码效率是有效的
- The thesis introduced principle and effect of DCT/IDCT in image processing at first, and further elaborated the advantages of DCT transform. 本文首先介绍了DCT和IDCT在图像处理中的作用和原理,详细说明了DCT变换实现图像压缩的过程,并与其它变换比较说明了用DCT变换实现图像压缩的优势。
- The H.263 protocol integrates the prediction coding DCT transform coding and entropy coding to realize the compression for video data. 该协议将预测编码、DCT变换编码和熵编码相结合实现对视频数据的压缩,并规定了编码器的总体结构和数据格式。
- The wavelet image coding achieves higher image quality and higher compression ratio than the traditional DCT transform coding. 小波变换图像编码获得了比传统 DCT变换编码更好的图像质量和更高的压缩比。
- Secondly, several prediction modes, such as frame/field prediction and the adaptivechosen of frame/field DCT transform to increase the efficiency of encoder arediscussed. 其次,仔细分析讨论了各种预测方法例如帧/场预测,和帧/场DCT变换怎样自适应的选择,以更进一步的提高编码器的效率。
- The main idea lies in decomposing the difference frame of prediction in a redundant dictionary with much more basis functions, giving up traditional lattice DCT transform. 基本思想是对于预测误差图像信号的分解,不再采用传统的晶格DCT变换,而是选择采用一个拥有更多基函数的冗余字典集合。
- Based on DCT transform, this algorithm can effectively guarantee the transparent of watermark and endure the attack of JPEG compression, noise and filter,etc. 该算法在图像的DCT域中完成,在很好的保证了水印的透明性的前提下,可以很好的抵御JPEG压缩、噪声干扰和中值滤波等攻击。
- In this paper, the basic processes had been gone deep into on DCT transform and K-L transform, and some questions had been genealogical compared and analyzed between them. 讨论了DCT变换和K-L变换的基本过程,通过例证系统地就两者之间的若干问题进行了比较与分析。
- The performance of wavelet transformation is better than DCT transformation in static 2D picture, so wavelet transformation is adopt in JPEG2000 and MPEG-4 international standards. 静态图像的小波变换方法性能优于DCT变换方法,因而被最新的JPEG2000和MPEG-4国际标准所采纳。
- Digital audio watermarking embedding algorithm based on auditory masking model is proposed, embedding watermarking by quantizing low-band coefficients of DCT transformation based on masking threshold. 摘要提出一种基于听觉掩蔽模型的音频数字水印算法,根据掩蔽阈值量化音频经DCT变换后的低频系数来嵌入水印。
- Under the premise of very low bitrate, the problem of real time of the coding has beenelementarily solved, by adopting the method of block DCT transform coding along with unitarymotion compensation. 通过选用分块DCT变换编码结合整体运动补偿的方法,在保证了甚低码率的前提下,初步解决了编码的实时性问题。
- In the design of JPEG coder, JEONG algorithm on DCT transform is improved, the problem of time parallel is resolved with pipeline optimization algorithm, and the speed of DCT/IDCT module is accelerated. 在JPEG编码器设计中,改进了JEONG的DCT变换算法,采用流水线优化算法解决时间并行性问题,提高了DCT/IDCT模块的运算速度;
- Most current video compression standards employ DCT transform and motion compensation,which approximately consumes 10% of encoding time, while motion estimation consumes about 60%. 目前的视频压缩标准多数采用DCT变换编码和运动补偿技术,运动估计约占整个编码时间的60%25、运动补偿约占10%25。
- Then the use of traditional compression methods into the MPEG-2 standard in detail,for example DCT transform, motion estimation and compensation, uniformquantization, run length coding and variable length coding, etc are discussed. 接下来详细的讨论了各种传统的压缩方法是如何具体应用到标准MPEG-2中的,例如DCT变换、估计预测编码、均匀量化、行程编码和可变长编码。
- The kitchen is an integral part of a house. 厨房是房子不可缺的部分