遮挡

The heart of this algorithm is to track at least four fiducial points from frame to frame that construct the affine frame, thus the occlusion contours between virtual and real objects can be reconstructed and reprojected. Further, each contour is labeled as being "behind" or "in front of" in the first two frames, depending on whether it is in front of or behind the virtual object, so the occlusion is resolved.

该算法的核心是在每一帧图像中追踪至少四个基准点，构成仿射基，进而对虚拟物体与真实物体之间的遮挡轮廓进行重建和重投影，且在前两帧图像中交互指定这些阻挡轮廓相对于虚拟物体的前后位置，从而解决了扩充现实的阻挡问题。

Epipolar geometry constraint is calculated by nonlinear error propagation at initial time to accelerate the speed of stereo matching; global and local methods are integrated to extract foreground objects precisely; and only pixels on objects' contour are reprojected into 3D space to fasten the depth calculation process.

使用视觉计算实现视频增强现实遮挡处理，用非线性误差扩散模型提高了对极几何的求解精度；将全局和局部高斯核相结合，提高并加快了物体前景轮廓线的提取精度和速度；仅用轮廓线上的点进行立体匹配的方法加快了真实物体深度反求的速度。

The core is dramatically cut by obscuring dust lanes which lace NGC 4565's thin galactic plane .

中心被许多壮观的尘埃线遮挡，这些暗的尘埃线牢牢系在NGC 4565的薄薄平面上。

This model can realize the depth perception of the objects and the figure-ground separation not only in the normal scenic images but also in the occluded scenic images. Experimental results testified the model's feasibility.

该模型不但可以分析和处理一般的真实场景的立体图像对，还可以处理遮挡场景的立体图像对，实现表面深度感知以及景物与背景的分割。

"Numerous faces and vehicle number plates are not made sufficiently unrecognisable," said data protection commissioner Hanspeter Thuer.

数据保护部门专员 Hanspeter Thuer 称&谷歌提供的图像上许多人的脸和汽车牌号都没有被遮挡&。

Ambient occlusion, as other direct lighting techniques is based on a non-local computations.

环境遮挡，作为另一种直接光照技术，它是基于非局部计算的。

Global illumination plays an important role in 3D graphics. Compared with local illumination, global illumination considers not only direct lighting, but also influence from indirect lights and occlusion. Thus, it can simulate more realistic effects, for instance, refraction and reflection of transparent objects, sub-surface scattering of translucent objects and shadow.

三维场景的全局光照计算[76~78]不仅考虑当前着色点的直接入射光照，还涉及环境中其它景物对着色点的间接光照或遮挡的影响，因而可以模拟比局部光照更真实的效果，如透明物体的折射和反射，半透明物体的子表面散射，阴影等。

The beach umbrella sheltered us from the strong sunlight.

那海滩大伞为我们遮挡了强烈的阳光。

Herne Bay is sometimes warmer than other parts of Kent as it is backed by the North Downs to the south.

赫恩海湾位于北部丘陵以南，受丘陵遮挡，气温时常比肯特郡其他地方高一些。

For the first day and a half, the Rossiya made rapid progress, speeding past thin ranks of birch trees that hung like silver curtains in front of barely undulating, featureless green fields.

出发后的第一个一天半，罗西娅号快速前进，穿越平坦而别无长物的绿色原野，狭狭的一排白桦树像银色的窗帘一样遮挡在车窗和田野之间。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。