Proximal gastric mucosal 5-ht-positive cells were examined by immunohistochemical method and their integrated optical density (IOD) value measured by image analysis.

以免疫组化方法检测近端胃黏膜5 - HT阳性细胞，应用图像分析系统测定其积分光密度(IOD)值。

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But the performance of this method deteriorates in the case of high density bar code image, which is severely blurred by a point spread function of optical system.

对于被光学系统点扩展函数严重模糊的高密度条码图像，这种方法的性能急剧下降。

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This paper presented a new non-contact method to meter co concentration and smoke optical density simultaneously and online based on photoacoustic technology.

本文提出一种利用光声技术同时在线测量CO浓度和烟雾消光的非接触式方法。

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