In the meantime, a new visual feature extraction algorithm is derived.

同时，得出了一种新的视觉特征提取算法。

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Thus, image segmentation algorithm and image visual feature extraction method are briefly introduced at the beginning of this paper.

因而，一开始即简要介绍了图像分割算法以及基本的图像视觉特征提取方法。

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This paper has a further exploration and study of visual feature extraction depending on analyzing correlative technology of the automatic annotation.

本文通过分析图像语义自动标注的相关技术，深入探讨和研究了图像视觉特征的提取方法。

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This paper has a further exploration and study of visual feature extraction depending on analyzing correlative technology of the automatic annotation.

本文通过分析图像语义自动标注的相关技术，深入探讨和研究了图像视觉特征的提取方法。

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