An asymmetrical object is visually heavier than symmetrical objects.

不对称物体在视觉上要重于对称物体。

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A novel moving object detection based on adaptive background subtraction and symmetrical differencing is presented in this paper.

本文提出了一种基于背景相减法和对称差分法来进行运动目标检测的方法。

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If the deformation of the object is symmetrical, two components of deformation can be obtained by image processing.

当物体具有对称变形时，可通过图像处理的方法，获得二维变形的分量值。

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But a single orbiting object, calculates Dr Lin, could cause symmetrical clumping on either side of the disc.

ECONOMIST: Astronomers may have stumbled on the birth of a solar system