All confines of gray scale are segmented into some parts, and multiple threshold is derived through in each part histogram of gradient, concavity analysis of histogram, moment and entropy of histogram. The multiple threshold image segmentation is achieved.
在基于阈值选取的图像分割方法中,本文改进了传统的迭代阈值法和基于梯度、凹度分析、矩、熵的单阈值分割方法,将灰度范围进行了划分,并根据各灰度区间的梯度直方图、直方图的凹度分析,直方图的矩、熵得到多个阈值,实现了图像的多区域分割。
参考来源 - 图像的多区域分割研究·2,447,543篇论文数据，部分数据来源于NoteExpress
同义词： concaveness
以上来源于: WordNet
N the state or quality of being concave 凹状; 凹性
I wish I were your second derivative so I could fill your concavities.
我希望我是你的另一个衍生物，那么我就可以填充你的凹陷了。
The formation of these microcracks is closely related to local conditions of the Tusion line concavities.
熔合线凹入处的局部条件直接影响微裂纹的形成。
Conclusion: Root trunk concavities may cause furcation involvement and reduce the efficacy of periodontal therapy.
结论：根柱凹陷可能是造成根分叉病变的原因，并可能是导致牙周治疗效果欠佳的原因。
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