1) pixel density
像素密度
1.
This paper uses image processing and recognition method and presents a new algorithm based on the symbols combined features of pixel density,characters center distance,connectivity and symmetry to segment main meter parameters symbols.
采用图像处理和识别的方法,提出了基于字符的像素密度特征、中心点间距、连通域特征、对称性特征等综合特征,从拍摄的指针式仪表表盘图片中提取并分割出仪表盘的主要参数符号;再利用不变矩特征和支持向量机方法进行仪表表盘参数的识别。
2) Radial pixel density
轴像素密度
3) Color pixel density
彩色像素密度
1.
Color pixel density(CPD) with computer-assistant of power Doppler flow signal were analyzed.
【方法】超声检测乳腺肿块患者55例(其中良性组25例,恶性组30例),采用计算机对肿块能量多普勒血流信号进行定量分析,测定彩色像素密度(color pixel densi-ty,CPD);抗CD34因子免疫组化染色测定肿块MVD,对CPD与MVD的相关性进行分析。
5) image density
影像密度
1.
The effect of PMAs'addition in the ink jet coating layer on the speed of ink absorption, definition and the image density was examined.
合成了由乙二胺或二乙三胺改性聚乙二醇的烷基多胺聚合物 (PMA) ,并对其结构进行了表征 ,同时研究了PMA添加到喷墨材料涂层中后对吸墨速度、清晰度、影像密度等记录性能的影响。
2.
The relationship between developing conditions and image density,as well as the weight of microcapsule wall material and image density were obtained.
利用界面聚合法制备了亚微米级染料前体微胶囊和显色剂微胶囊,探讨了显影条件、囊壁材料用量与影像密度之间的关系。
3.
The results show that the image density increases with the increase of development temperature and time firstly,and then a steady density is obtained.
随显影温度提高、显影时间延长,影像密度呈现出先增大再逐渐达到稳定的变化趋势,分析了不同显影温度、显影时间条件对影像密度特性的影响,确定最佳显影温度为130℃,显影时间为5 s。
补充资料：非密度制约因素(见密度制约因素)
非密度制约因素(见密度制约因素)
l焦非密度制约因素见生态因素、密度制约后
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条