Therefore, the study on the theories and related technologies of image object segmentation is quite meaningful.

因此，对图像对象分割理论及其相关技术进行研究具有十分重要的意义。

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The main problems in point cloud segmentation methods were pointed out, and the description and evaluation of point cloud segmentation in related fields were conducted.

指出了目前点云模型分割技术方法中存在的主要问题；分类介绍和评价了点云分割在相关应用中的研究工作；

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Generally speaking, to segment an image is very difficult. The current image segmentation algorithm is the technology aiming at the object of segmentation and it is also related to the certain issues.

但对图像进行分割在一般意义下十分因难，目前的图像分割算法都是针对分割对象的技术，与具体问题相关。

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