一种相关跟踪算法在小内存DSP上的实现

文中构建了以TMS320DM642为核心的硬件图像跟踪处理系统,但TMS320DM642的CPU片内内存较小,大量的图像数据无法一次移入TMS320DM642的CPU片内内存,这就使得现有的图像相关跟踪算法无法在TMS320DM642上快速运行。针对这一问题,本文在SSDA算法的基础上提出了一种新的相关跟踪算法,使之在保持SSDA算法的跟踪精度、可靠性、抗干扰能力的同时可以高速运行在小内存的DSP系统上。     

香烟小包装嵌入式视觉在线检测系统

针对烟草企业对小包烟包装质量精密检测的需要,提出基于嵌入式视觉在线检测的关键技术。本系统以TI公司的数字多媒体处理器TMS320DM642为核心,设计实现小包烟包装质量精密在线检测的软、硬件平台。通过DM642对视频图像进行采集并结合相应的智能图像处理与模式识别算法,使系统不仅适应在线快速包装质量检测,而且能准确的判断缺陷类型。实验证明,嵌入式视觉系统的扩展和适用性强,应用前景广泛。     

基于TMS320DM642的运动跟踪系统的设计与实现

为了使视觉监控系统具有自主能力,设计了基于TMS320DM642处理器的运动物体跟踪系统.分别介绍了系统的硬件和软件设计,提出了基于图像差分的特征等实用跟踪算法来跟踪运动目标.实验结果表明,该系统具有在复杂背景下实时检测识别和跟踪运动目标的能力.     

基于DSP的自主式机动目标跟踪系统

设计了一种基于DSP的机动目标跟踪系统.该系统采用TMS320DM642作为其核心处理器,还包括BASLER A301fcCCD,以及大容量存储器.介绍了一种改进CamShift算法,利用目标边缘作为搜索特征,实现对机动目标自主式跟踪.在基于TMS320DM642的跟踪系统平台上实现了该跟踪算法,完成了跟踪系统的软、硬件设计.经过实验证明该跟踪系统工作性能稳定,能够有效跟踪机动目标.     

基于TMS320DM642内河船舶目标检测系统的设计与实现

介绍了一种基于3MS320DM642内河船舶目标检测系统的设计与实现。首先讨论了船舶检测系统的硬件设计，该系统采用新一代数字多媒体处理器TMS320DM642。它具有极强的处理能力，可以保证图像信息处理的实时性和准确性。然后在硬件平台的基础上给出了其软件实现，提出了基于形态学重构的内河船舶目标检测算法。该算法先对原图像进行中值滤波，然后取滤波后的图像中亮度值最大的像素作为标记图像；原图像经顶帽变换，并进行迭代阈值分割后的图像作为掩模图像来进行形态学重构，从而实现船舶目标检测。最后将该系统应用于长江三峡的船舶检测，实验结果表明，该系统能实时的满足算法的需要，该算法在复杂背景下，能准确地检测出目标。     

基于DSP的实时人脸检测系统

阐述了硬件设计思想、软件开发流程及人脸检测算法的实现.首先以TMS320DM642建立实时图像处理的硬件系统,通过CCD获取视频序列,对当前图像进行降噪、图像增强以及边缘检测的预处理,再利用基于肤色和差分帧相结合的算法对视频序列进行检测、跟踪人脸.本系统所有算法均使用C和汇编语言混合编程并在TI DM642EVM上开发实现.实验结果表明,本系统的算法简单、快速、鲁棒性强.     

基于机器视觉的发动机喷嘴检测系统的设计

以检测发动机喷嘴上几何尺寸为目的,设计了以TMS320DM642DSP为处理器,利用机器视觉技术进行检测的系统;通过CCD摄像机采集被测喷嘴的数字图像,在DSP中进行图像去噪、边缘检测、图像识别等图像处理过程,识别出被测尺寸并计算出值;阐述了该系统的工作原理和图像处理的算法,流程及实验结果。     

基于DSP嵌入式车牌识别系统的设计与实现

介绍一种基于TMS320DM642嵌入式的可用于电子警察、停车场、收费站等需要进行车牌识别场合的车牌识别系统的结构、硬件设计及软件设计。采用TMS320DM642进行图像采集,根据车牌的跳变特征提取车牌并使用改进的BP神经网络算法对车牌字符进行识别。系统运行稳定、可靠,识别率高。     

基于DSP的嵌入式高速图像处理系统设计

为了在视觉检测中实现对数据的高速采集与显示,提出了一种基于DSP、CMOS图像传感器和视频解码器的嵌入式高速图像处理系统设计方案。以高性能数字信号处理器TMS320DM642作为硬件平台,实现了图像数据的高速获取与实时显示。介绍了系统的硬件接口设计及控制方式、系统工作流程与软件设计,并提出了对图像进行色彩还原的算法。     

G.729B编解码算法在DM642上的实现与优化

语音通信是多媒体通信的基础，为了提高语音通信的效率与质量，对高质量低位率静音压缩算法G.729B进行了研究，将该算法移植到．11公司最新一代定点数字信号处理器TMS320DM642上，并讨论了其在TMS320DM642上优化的关键技术，最终实现了高效率的语音编解码器。通过试验证明，G．729B在借助TMS320DM642的情况下，传输位率大大降低，并且保持了较高的语音音质，有利于实现高质量的多媒体通信。     

Effective solution of certain problems of theory of schedulings of nets

Cybernetics and Systems Analysis -     

Complexity of families of learning algorithms and estimation of the nonrandomness of extraction of empirical regularities

The paper presents a general approach to the evaluation of the complexity of classes of algorithms, so-called pVCD-method. To develop this method, all the examined families of models of empiric generalization were restricted to classes implementable on computers and, wider, by examining their partially recursive representations. Within the framework of the algorithmic approach, the concept of Kolmogorov’ complexity of algorithms for the recognition of properties or the extraction of regularities is proposed. The method proposed to evaluate the nonrandomness of the extraction of empirical regularities is based on this concept.     

Analysis of microdensitometric data in terms of probability of cleavage of DNA

Computer-aided analysis of autoradiographic films of DNA fragments is presented. The Powell least-squares procedure is used for optimization of parameters for components of complex densitometric curves. Since each densitometric spectrum may be divided for several non-overlapped blocks of bands, there is no upper limit on the number of parameters which must be optimized. Eight shapes for the component bands are utilized: symmetric and asymmetric Gauss and Cauchy functions, direct, symmetric and asymmetric product of Gauss function and inverse of Cauchy function, and log-normal function. The probability of DNA cleavage is calculated with correction for multiple cuts. The methods presented was applied to detailed analysis of densitometric spectra of a 21-bp DNA restriction fragment and allowed for direct correlation between structural microheterogeneity of DNA and the resulting cutting pattern. This method should facilitate the analysis of densitometric data from antibiotic-induced cleavage of DNA and footprinting experiments.     

联合收割机脱粒滚筒恒速智能控制器设计

研究了轴流式联合收割机的控制问题,给出了联合收割机脱粒滚筒的数学模型,介绍了基于模式识别的智能控制原理,建立了联合收割机脱粒滚筒恒速控制模型,设计了基于模式识别的智能恒速控制器.应用Matlab/Simulink进行了控制器仿真,其结果表明,将基于模式识别的智能控制应用于联合收割机脱粒滚筒的恒速控制,其过渡过程平稳、响应速度快、无超调、无振荡并且无稳态误差.     

An estimate of numbers of terms of semicycles of delay difference equations

In this paper, we study the semicycles of oscillatory solutions of the delay difference equation y_n+1 − y_n + p_ny_n-k = 0, where p_n is a sequence of nonnegative real numbers and k is a positive integer. Upper bound of numbers of terms of semicycles are determined in the case when

Our results improve and complement known results in literature.     

Complexity of approximation of 3-edge-coloring of graphs

The problem to find a 4-edge-coloring of a 3-regular graph is solvable in polynomial time but an analogous problem for 3-edge-coloring is NP-hard. To make the gap more precise, we study complexity of approximation algorithms for invariants measuring how far is a 3-regular graph from having a 3-edge-coloring. We show that it is an NP-hard problem to approximate such invariants with an error O(n1−ε), where n denotes the order of the graph and 0<ε<1 is a constant.     

Modifications of the method of variation of parameters

In spite of being a classical method for solving differential equations, the method of variation of parameters continues having a great interest in theoretical and practical applications, as in astrodynamics. In this paper we analyse this method providing some modifications and generalised theoretical results. Finally, we present an application to the determination of the ephemeris of an artificial satellite, showing the benefits of the method of variation of parameters for this kind of problems.     

计算机辅助课表编排技术的研究

讨论了几种实用的计算机辅助课表编排技术及在实际编排中的应用。应用分析表明，采用分批与或图搜索和分批优化的匈牙利算法相结合的方法，在计算机辅助课表编排中是行之有效的。