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Finally, the results of aberration comparison indicated ellipsoidal dome can be used in coaxial infrared optical system, and conical surface has unique advantages in off-axis system.

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Secondly, in our methods, the essential geometry of the image single axis geometry may be specified by six parameters and this may be estimated from one conic and one fundamental matrix (a total of 12 parameters) or may be minimally estimated from two conics (a total of 10 parameters).

本文證明了單軸旋轉(zhuǎn)運(yùn)動(dòng)的不變量可以通過一個(gè)基本矩陣和一條二次曲線來確定日韩成熟熟女精品自拍视频，在這種情況下，由于基本矩陣的自由度為7国产污黄视频网站视频免费看，二次曲線的自由度為5欧美黄色网站一区，所需確定的參量個(gè)數(shù)僅為12，大大減少了不變量的計(jì)算量；本文同時(shí)證明單軸旋轉(zhuǎn)運(yùn)動(dòng)的不變量可以通過最少兩條二次曲線來確定亚洲第一小电影免费网站，在這種情況下所需確定的參量個(gè)數(shù)僅為1016萝粉嫩自慰喷水，該方法是目前同類算法中參數(shù)最少的；本文提出了用多條二次曲線求解單軸旋轉(zhuǎn)運(yùn)動(dòng)的不變量的最大似然估計(jì)算法免费高清一区二区不卡片，其所需確定的參量個(gè)數(shù)為6+2n一道本天堂在线视频，其中n為二次曲線的個(gè)數(shù)，該公式更深刻地反映了二次曲線與不變量的參數(shù)關(guān)系欧关一级A片欧美黑人一级A片。

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.

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Once a foreign body is detected, it is important to align the sound beam with the long axis of the foreign body, perpendicular to the superficial surface of the foreign body for maximal conspicuity and definition.

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As to the remaining parameters, two methods are developed: first, accepting that the projection function complies with a circular function within at least a part of a given field of view, constrained by the obtained object-to-image radial mapping and a constant focal length, the best-fitting point of the optical origin is tested along the optical axis; secondly, referring to the postulation of the exclusively bilateral mapping between an imaged point and its scenic sight ray, a measuring technique is developed to survey the world coordinates which will fabricate a projecting path to the imaged points located on the imageable region of the image plane in order to directly model the projection geometries involved.

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Many contouring NC machines, such as lathe s and vertical milling machines, are of the two-axis type.

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Many contouring NC machines, such as lathes and vertical milling machines, are of the two- axis type.

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Vector and coordinate transformation are used to analyse the work surface equation and the slip velocity between the cam and idler wheels, also the dynamic characteristics of pistons, cylinders and? principal axis of the contrapositive cam engine.

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