本文给出了集值映射的上半连续性和下半连续性同图象的闭性和开性间的一些关系。

This paper gives some relation of U. S. C. and L. S. C. of set-valued mappings with closed and open property of image.

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本文论述了图象质量的各种定量测度，包括连续的和离散的形式。

A variety of quantitative measures of the image quality, including the continuous and discrete forms, is investigated.

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结果分割后的超声心脏图象具有光滑连续的边界，且心脏的各腔清晰、准确。

Result The segmented image had smooth continuous edges, few noises or speckles, and the contour of ventricle was clear and accurate.

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