zero n. (pl. zeros, zeroes) 1.【数学】零;零号。 2.零位;零点,起点;(温度表的)零度,冰点;座标原点;无。 3.最低点;【天文学】天底;【航空】零高度。 4.没价值的人[物]。 5.【军事】= zero hour. the absolute zero 【物理学】绝对零度〔-273.16℃〕。 the air zero 原子弹空中爆炸中心。 fly at zero 超低空(1000英尺高度以下的)飞行。 vt. 1.把(调节器等)调整到零位。 2.把…减少到零位。 zero in 1. 调整(枪炮的)射距,把(枪炮等的标尺)调整到标准无风部位瞄准。 2. 把(火力)对准目标 (on)。 zero out 给…以免税待遇(to zero out funding for public broadcasting 对用于公共广播的经费实行免税)。 adj. 1.零(度)的。 2.【气象学】云幕低于50英尺,能见度小于165英尺的。
tree n. 特里〔姓氏〕。 n. 1.树〔主要指乔木,也可指较大的灌木〕。 ★玫瑰可以称为 bush, 也可以称为 tree. 2.木料,木材;木构件;〔古语〕绞首台;〔the tree〕(钉死耶稣的)十字架;鞋楦。 3.树形(物),世系图,家系 (=family tree);【数学】树(形);【化学】树状晶体。 a banana tree 香蕉树。 an axle-tree 心棒,轴料。 a boot-tree 靴楦[型]。 a saddle-tree 鞍架。 at the top of the tree 在最高地位。 tree of Buddha 菩提树。 tree of heaven 臭椿。 tree of knowledge (of good and evil) 【圣经】知道善恶的树,智慧之树。 tree of life 生命之树,生命力的源泉【植物;植物学】金钟柏。 up a tree 〔口语〕进退两难,不知所措。 vt. 赶(猎兽等)上树躲避;〔口语〕使处于困境;穷追;把鞋型插入(鞋内)。
A compression method with wavelet transformation and biblock zero tree coding 基于小波变换和对块零树编码压缩方法
In receive port, dsp is also used to finish waveiet reverse tral1slbnnation and cl1al1ged zero tree decodil1g, rebuilding the bmp image 接收端同样使用dsp来完成解压缩和小波反变换,重建为bmp图像。
The proposed algorithm combining with simplified zero tree codec is of low computation and memory requirement while retaining the flexibility that block-based methods possess 结合重叠块运动估计和运动补偿,提出一种新的基于bintdlt的视频压缩方案。
Sofm arithmetic methodology, lbg arithmetic methodology, dpcm encoding step by step, wavelet zero tree compression etc, are common methods applied in the encoding of image at present 本文主要探讨了sofm算法、lbg算法、dpcm分步编码、小波零树压缩等较为多见的几种图像编码方法。
This algorithm combined joint-component vector quantization respectively with zero block and zero tree coding, scanned three component of color image separately and simplified separate coding into joint scanning and joint encoding 该方法将联合色彩分量矢量量化和零块、零树编码方法巧妙结合,把彩色图像的三个色彩分量单独扫描,单独编码的过程简化为联合扫描和联合编码的过程。
Ln sending port, video capture card of wlnnov company, videum vo is used to get real time still ilnages and save them to hard disk as bmp forl11at files . thel1, dsp is used to finish wavelet transformation and changed zero tree coding 发送端通过winnov公司的pci采集卡videumvo实时采集静态图像,以真彩色bmp文件格式保存到硬盘上,再由dsp进行小波变换,用零树法压缩编码,并将压缩后的数字化信号进行传输。
"l'lle brief introduction of underwater acoustic channel and the cl1art of image transmission syste111, innovation of ti1is paper are given in the first chapter . basic technology and hardware using in this project are introduced in the seco11d chaptel transform methods, especially the wavelet transformation are introdtlced il1 the tl1ird cllapter . ii11age's coding methods are introduced in cl1apter four, witll tilem ti1e zero tree method is the el11pl1ases 第一章给出对水声信道特性简介以及图像信息传输的系统框图、本研究创新之处;第二章介绍图像处理的基本技术以及本研究的硬件环境;第三章介绍图像数据的变换方法,着重介绍了小波变换涉及到的知识;第四章介绍图像编码,重点介绍了零树法编解码;第五章介绍本研究的软件、硬件设计、对零树法的具体改变。
My principal work is these : transforming image in wavelet at first, then encoding wavelet coefficients in sofm arithmetic methodology, lbg arithmetic methodology, dpcm encoding step by step, wavelet zero tree compression separately, reconstructing the image at last, so researching how to improve compression ratio, hi addition, the article puts forward a new arithmetic methodology, sl arithmetic methodology, on the base of comparing sofm arithmetic methodology with lbg arithmetic methodology what it needs emphasis is the variety of reconstructed image because of the diversity of mother wavelet 本人所做的工作主要围绕着这样的步骤:将图像数据先进行小波变换,然后分别应用sofm算法、lbg算法、dpcm分步编码、小波零树压缩等对图像小波系数进行编码,最后重构图像。akqnk44wa从而研究如何能够提高图像压缩比,并比较了各算法在图像压缩中的特点。另外,根据sofm算法、lbg算法在图像压缩中的各自特点,提出了一种新的算祛一七l算法。
It's reviewed for the coefficient classification of existing wavelet image encoding technologies . wavelet coefficient is clustered with gray structuring elements dilation and outputted in the form of fractional bit plane according to the different significance . zero tree structure is used to employ cross-subband dependency to promote the coding effort 在对现有的小波编码器对系数的分类方法的分析下,通过灰度结构元的形态学膨胀运算对小波系数进行更细的聚类分析,按照重要性的不同以分数比特平面的形式输出系数,通过零树结构开发带间相关性。
After completing the mctf using db2 wavelet, it is well integrated with discrete wavelet transform ( dwt ) and embedded zero tree wavelet . it uses atom structure to organize the coded bit-stream to achieve the brilliant combination of three scalabilities : temporal, spatial and psnr scalabilities . and the software platform is based on vc + + 6.0 在基于db2小波的运动补偿时域滤波方法实现之后,本文将之和离散小波变换(dwt)、嵌入式零树编码进行有机结合,并采用基于基本原子粒的数据流组织结构将分层后的数据流有效地组织起来,实现了具有时间、空间、质量三方面的完整可伸缩性的编解码系统,系统的软件平台基于vc++6.0实现。