1) model projection
模型投影
2) projection model
投影模型
1.
Spatial direction query based on projection model
基于投影模型的空间方向查询
2.
The choice of the projection model is an important factor in single photon emission computed tomography(SPECT) image reconstruction.
SPECT(s ing le photon em iss ion com pu ted tom ogr-aphy)断层图像重建算法的重要因素之一是投影模型的选取。
3.
The method first models the image deformation caused by the tilted film as a projection model,and makes use of CT and MRI sequence image rulers,both vertical and horizontal,to rectify the deformation and calculate a few user defined marker s relative coordinates; then em.
首先利用CT、MRI序列图像自身提供的水平和垂直标尺 ,通过本文所建立的投影模型对扫描过程中由于胶片倾斜等因素导致的图像变形进行矫正 ,求出自定义定位标记的相对坐标 ;然后利用定位标记在整个序列中位置不变的的特点 ,根据定位标记对序列图像进行归一化处理 。
3) projected shell model(PSM)
投影壳模型
1.
To understand the microscopic origin of the signature inversion in the yrast positive-parity bands of doubly odd Rb nuclei,as an example,we performed calculations using the projected shell model(PSM)to describe the energy spectra in ~(82)Rb.
为了理解奇-奇Rb核正宇称晕带旋称反转的微观起源,作为一个例子,用投影壳模型(PSM)计算了核~(82)Rb的能谱。
4) projected shell model
投影壳模型
1.
Relativistic Consistent Angular-momentum Projected Shell Model and Its Appkications;
相对论自治角动量投影壳模型及其应用
2.
The beta-decay of 176Yb→176Lu is calculated in the frame of projected shell model (PSM).
采用投影壳模型对176Yb的β衰变进行了计算,并与实验结果进行了比较。
5) projector model
投影仪模型
6) Projection pursuit model
投影寻踪模型
1.
Projection pursuit model can give a comprehensive assessment projection index based on the indexes of regional agricultural eco-environmental quality,and according to the value of projection index,a(reasonable) assessment result can be drawn and it is easy to do in practice.
研究建立了区域农业生态环境质量综合评价的投影寻踪模型,利用该模型可将反映区域农业生态环境质量的多个指标转换为反映各指标综合信息的投影特征值,并根据投影特征值的大小对区域农业生态环境质量进行客观评价,方法可靠,结果合理,操作简便且易于生产应用。
2.
This paper used projection pursuit model and genetic algorithm to evaluate soil fertility, and based on advantages of dealing with high dimensional data of PP and global rapid optimum seeking of GA which achieved good results.
为此,运用投影寻踪模型和遗传算法对土壤肥力综合评价进行了研究,充分利用了投影寻踪模型在处理高维数据和遗传算法在全局快速寻优方面的优势,取得了很好的效果。
3.
To attempt to apply projection pursuit model to evaluate profitability of enterprise,the listed company of household appliance industry was taken as the research object and applied projection pursuit model to evaluate profitability of listed company of household appliance industry.
为尝试将投影寻踪模型应用于企业盈利能力评价,以家电行业上市公司为研究对象,运用投影寻踪模型对各家电上市公司盈利能力进行综合评价。
补充资料：滤波反投影或卷积反投影
滤波反投影或卷积反投影
影像学术语。当代影像学设备进行影像重建的数学方法。在直接用扫描后所获得的投影轨迹剖面图反投影重建出的CT图像中，无法避免角度卷入条纹伪影(angular aliasing streaks)造成的模糊和失真。这种现象与被扫描层面的空间频率中高频信息的损失有关。使用一种精密的数学方法去除这种模糊。称为“展现”(unfolding)或去卷积(deconvolution)，即在反投影前使用一种数学的“滤器”或卷积函数对原始数据进行修正，然后再进行反投影。两步数学处理过程合称为滤波(修正后)反投影或卷积(后)反投影。这种方法的优点是处理过程简单，速度快，所得图像逼真、清晰。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条