Computation Controllable Mode Decision and Motion Estimation for Scalable Video Coding

This paper proposes an efficient computation‐aware mode decision and search point (SP) allocation algorithm for spatial and quality scalabilities in Scalable Video Coding. In our proposal, a linear model is derived to allocate the computation for macroblocks in enhancement layers by using the rate distortion costs of the base layer. In addition, an adaptive SP decision algorithm is proposed to decide the number of SPs for motion estimation under the constraint of the allocated computation. Experiment results demonstrate that the proposed algorithm allocates the computation resource efficiently and outperforms other works in rate distortion performance under the same computational availability constraint.     

基于人工神经网络的高分五号高光谱影像悬浮泥沙浓度反演方法

悬浮泥沙浓度是水体监测中极为重要的指标.本论文基于神经网络具有弥补传统经验算法固有误差的潜力,设计并开发了基于人工神经网络的神经网络校正器来对经验反演结果进行二次校正.为了防止在小数据集的情况下出现过拟合问题,采用了特殊设计的正则化项.基于高分五号高光谱遥感数据以及在长江口和沿海水域同时收集的悬浮泥沙浓度实地测量结果,...     

基于 GSTE的验证在 UART模块中的应用研究

实现基于VIS平台的GSTE验证方法,并将非阻塞性赋值算法引入VIS中,完成了对UART 的寄存器传输级模型的FSM的状态转移的验证和对发送的数据是否与输入数据一致的符号化验证。实验表明,该方法能够完成测试用例的全覆盖,说明了该方法在实际例子中所具有的重要意义。     

基于单片机的激光远场光斑直接测量系统

激光远场光斑测量对描述激光束的远场性能,评价激光器以及系统的实际工作性能具有重要意义,通过比较激光光斑远场直接测量与间接测量的优缺点,提出使用单片机控制的探测器阵列进行远场光斑直接测量．描述了系统结构,分析了关键技术,给出了主要程序的框图．该系统能够测量激光光斑大小、形状、总能量、能量分布、重心、束散角等参数,可适用于多种重复频率的激光器,测量面积大、精度高,实时性好,为激光束绝对空间能量分布的测量提供了有效手段。     

一种抗噪的红外图像对比度增强方法

提出一种基于离散平稳小波变换和非线性增益的红外图像对比度增强方法。对红外图像进行离散平稳小波变换后,利用所提出的去噪方法对分辨率较好的各高频子带直接去噪;并利用所提出的非线性增益法结合文中的去噪法对分辨率较差的各高频子带进行增强。实验结果表明,提出的方法在有效地增强红外图像对比度的同时,又能很好地抑制相关噪声。算法在视觉质量上优于传统的反锐化掩膜法、直方图均衡法。     

级联布喇格声光互作用的频移与光束偏转分析

声光器件在设计和制作中,由于器件结构和功能上的需要,常采用级联形式的声光互作用。根据声光互作用的一般理论,对不同的声光互作用条件下,级联布喇格声光互作用的频移和光束偏转进行了分析。当组合两次不同的声光互作用,可以得到不同的频移和光束偏转。并指出,通过调节两声波的频率,可以使输出光波的传播方向不随声波频率的改变而变化。     

Sol－Gel法制备的CoMnNiMgO热敏元件老化特性的研究

假设老化是从亚稳态到稳态的变化，利用反应动力学理论对Ｓｏｌ－Ｇｅｌ法制备的ＣｏＭｎＮｉＭｇＯ热敏元件的老化特性进行了研究，推导出老化公式△Ｒ／Ｒｏ＝Σｒｉ［１－ｅｘｐ（－ｔ／τｉ）］其中：τｉ＝τｏｉｅｘｐ（Ｅｉ／ｋＴ））。结果表明理论与实验能很好地一致，对于本文所研究的热敏元件，符合公式ＡＲ／Ｒｏ＝ｒ１［１－ｅｘｐ（－ｔ／τ１）］＋ｒ２［１－ｅｘｐ（－ｔ／τ２）］，该式中：，ｒ１＝１１．７６７×１０－３；ｒ２＝２０．６７３５×１０－３；τ１＝６．４５７８×１０－３ｅｘｐ（６１９０．８９／Ｔ）；τ２＝１．０４６１×１０－６ｅｘｐ（８ｌｌ６．２４／Ｔ）。     

非重复跳频序列族的理论限制

本文讨论跳频多址组网用的非重复序列族的理论限制,得到了限定汉明相关条件下非重复序列族中序列数目和序列长度的理论限,列举了几种达到了理论限的非重复跳频序列族。     

RESEARCH ON REAL-TIME CORRECTOR OF SPECTRAL INTERFERENCES

Further advancement of ICP-AES analytical technique is hindered by complex spec-tral interferences.The correction algorithms recently proposed need too much computation andtime to run in real time on general microcomputers.In this paper,a new kind of spectral interfer-ence fast correcting system(SIFCS)was developed,in which the hardware is a TMS32020 digitalsignal processing board in IBM-PC I/O channel and the software is composed of a correctingprogram based on a new effective algorithm and a master program on IBM-PC.Experimentsshow that the processing speed on SIFCS is 50-100 times faster than that on IBM-PC/AT.Thismakes real-time correction of spectral interferences feasible.     

Solving microstrip discontinuities by the measured equation ofinvariance

The measured equation of invariance (MEI) is a newly developed computational method which allows finite-difference (FD) or finite-element (FE) mesh to be terminated very closely to objects of interest. In this paper, the authors show how the MEI method may be applied to microstrip antennas and discontinuity problems. The authors demonstrate its use in general full-wave three-dimensional (3-D) microstrip problems, and give results for open-ended microstrip lines and microstrip bends