象的

But these methods limited by the expense of computing fundamental matrices and trifocal tensors or of the nonlinear optimization involved in computing epipolar tangencies. Through the studies of the invariants of the single axis motions, computational theories have been developed in this thesis to provide practical solutions for the problem of structure and motion from fitting the corresponding points in the whole sequence to its conic locus or conics for short.

在最近的研究中，一些研究人员利用视觉几何的方法从非定标的图象中对单轴旋转运动进行分析，提出了利用基本矩阵和三焦距张量求解单轴旋转运动中的关键参数——旋转角度的算法，但是该算法需要计算一系列相邻2图象的基本矩阵和一系列相邻3图象的三焦距张量，由于每个基本矩阵的自由度为7，每个三焦距张量的自由度为18，导致算法参数数量非常之大。

After certifying the irreality of ideal filtering function, we can get a better filter selecting a proper window function. Comparing two actual filters, we designate a good"Panama hat"filtering function. Meanwhile, an effectively linear interpolating function is introduced to raise the image reconstruction quality. Describing its realizing steps on the micro-computer briefly, we reconstructed some images from the anlogue projections of some models. The number of projection views is 180, 100 same interval parallel lines per view; the size of reconstructed images is 64×64 pixels with 64 gray levels; the reconstructing speeds are 40" on PC-386 and 12"on PC-486, respectively; each pixel is 0.31mm.

在证明了理想滤波器的不可实现性之后，得知通过选择适当的窗函数可获得很好的滤波函数，经过两个实际滤波器的效果对比，我们选取了较好的"巴拿马帽"形滤波函数，同时也介绍了一个有效的提高重建质量的线性内插函数，概要地叙述了平行射束图象重建的计算机具体实现步骤后，对几个物体的模拟投影数据进行了重建：投影角为180°，每视角下有100个平行投影数据点，在386微机上重建尺寸为64×64，时间约为40秒；在486/33MHz微机上只用了12秒，图象的象点精度是0.31mm。

In my vision I saw myself in the citadel of Susa in the province of Elam; in the vision I was beside the Ulai Canal.

我见了异象的时候，我以为在以拦省书珊城中。我见异象又如在乌莱河边。

In chapter 2 of this dissertation, a highly efficient synthesis of the title compound: 1-methyl-2, 3, 3a, 4, 5, 9b-hexahydro-1H-pyrrolo [3, 2-h] isoquinoline (157), a conformationally constrained nicotine analog, has been accomplished in only seven steps starting from commercially available 3-bromopyridine.

在第二章中，我们对具有刚性构象的尼古丁类似物的合成进行了研究。医学研究表明，尼古丁及其类似物对许多神经系统类疾病具有很好的治疗效果，而且药理活性与分子的构象有着非常密切的关系，许多具有刚性构象的分子有着很强的药理活性。

N is the number of pixels to process. bound, which is basically considered as incalculable for the nonce. The feasibility and reliability of proposed method have been verified on a group of ISO test images naturally acquired by various imaging sensors.

对于当前公认基本不可计算的给定图象的无损压缩极限，给出了一个实用的极限估计新方法，在对利用各种不同成象传感器自然获取的十余幅ISO JPEG标准测试图象的实验中显示出该方法的可用性和准确性。

The filter, which is a convolving kernel as a function of the pixel under consideration, is applied only to a pre defined neighborhood of the current pixel.

实验表明，该方法对合成及自然彩色图象均有较好效果，能够方便快捷地得到图象的边缘。

In recording, the synchronization of sound tracks to a picture.

在录象技术中，声道与图象的同步。

In this thesis, the theories and methods of GA are analyzed in detail , the trend of GA in recent times is briefly discussed. Because of the importance of image segmentation, two methods of color image segmentation based on GA are proposed. One is the surface of thresholds image segment method, the other is entropic threshold method. Two algorithms are realized through VC++ 6.0. After that, we compare the characteristics of two algorithms and prove that GA can be very well applied to solving image optimal problems.

本篇论文比较详细地论述了遗传算法的基本理论、方法，指出了算法的研究现状，由于图象分割的重要性，提出了两种基于遗传算法的彩色图象分割方法，即阈值曲面分割方法和最佳熵阈值分割方法，通过VC++6.0编程得到了实验验证，比较了两种算法的性能，证明遗传算法完全适用于图象的优化问题。

And I saw in a vision; and it came to pass, when I saw, that I was at Shushan in the palace, which is in the province of Elam; and I saw in a vision, and I was by the river of Ulai.

8：2 我见了异象的时候，我以为在以拦省书珊城中。我见异象又如在乌莱河边。

And I saw in the vision; and when I saw it, I was in the strong town Shushan, which is in the country of Elam; and in the vision I was by the water-door of the Ulai.

8：2 我见了异象的时候、我以为在以拦省、书珊城中，〔城或作宫〕我见异象又如在乌莱河边。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。