However g . 729 ' s computation complexity is a little higher for application . taking the advantage of discontinuous transmission , we embed a new algorithm of voice active detection ( vad ) into the original algorithm of g . 729 to improve its efficiency . this algorithm can also reduce the average computation complexity of g . 729 本研究针对g . 729的特点,提出了一种新的语音激活检测算法,利用该算法对g . 729的不足之处进行改进,提高g . 729的算法效率,降低其平均运算时间,并将该算法用vhdl描述,兑现成硬件。
Detecting feature lines from featured objects is well studied in this paper . random sample theory is used in line detection , thereby , the disadvantages brought by traditional hough transform , for instance , large computing load , long computing time , large occupied memory , and low precision are eliminated 文中重点研究了检测特征标志物上特征直线的技术,创新地将随机采样理论运用于直线检测中,改变了以往hough变换检测直线所存在的运算时间长、占用内存空间大、精度不高等缺点。
The realization and betterment of the algorithms of iris location and the compare of the results are focused on researching . in the most important fixed position respect of this paper , a great number of the latest classical iris localization algorithm are read , and several algorithms are realized . these algorithms are improved according to adopted pictures " characteristic 论文在阅读了大量及较新的经典的虹膜定位算法基础上,从实际采用的虹膜图片库出发,研究分析和实现了灰度直方图法,灰度投影法,标准偏差极大值法,灰度梯度法,灰度曲线法等算法,这些算法均根据所采用的库中图片的特征做了相应的改进,应用各种算法得到了大量实验结果,并对实验结果做了大量的比较分析,这些算法或在定位精度或在运算时间方面各存在优缺点。
On condition that quality of picture restructured is insured , with a view to the motion estimation algorithms that costs the longest coding time , the method of prejudgment of zero motion vector is adopted in this paper , which makes about 50 percent motion estimation computation left out , so the encoding speed of encoder can be further increased 为了解决质量和实时性的矛盾,本方案在保证质量的前提下,针对运算时间较长的运动估计模块,给出了零运动矢量提前判断的方法,从而省去了约50的匹配块搜索运算,提高了h