| 1. | After removing noise by the difference filtering arithmetic , the bubbles were separated from background to obtain the pre - segmentation image by using morphological gradient and adaptive threshold
利用差影算法滤除背景干扰，依据形态梯度和自适应阈值分离前背景，得到预分割图像。 |
| 2. | With the conditions of constant false - alarm probability and low signal - to - noise ratio , the signal - to - noise ratio can be improved by reducing the effects of background interference and random noise
在恒虚警概率条件下，该算法可以在低信噪比的情况下，减小背景干扰和随机噪声的影响，提高信噪比。 |
| 3. | Scholars at home and abroad offer many detection algorithms , but these algorithms aren ' t mature , especially to complicated background , and these algorithms almost deal with uncomplicated background
目前，国内外许多学者已经作过大量的检测算法研究，但还没有建立成熟的理论体系和切实可行的实用算法，尤其是在复杂背景干扰的抑制方面，大部分研究工作所处理的还不是真正的复杂背景。 |
| 4. | The algorithm can effectively separated the small moving target from the rela - tively stationary backgrond according to the differences among the small moving target , back ground interference and noise by inhibiting the background and enhancing the target
这种算法根据运动小目标，背景干扰和噪声在图象序列中的差异，能够抑制背景，增强小目标并将其从相对静止的背景中有效地分离出来。 |
| 5. | The amplitude feature and the phase feature of target highlights are acquired , and two cluster methods based on the two features are proposed . interference background is wiped out by cluster analytic methods , and distinct target image is achieved
同时，提出了基于目标亮点幅度特征和目标亮点方位特征的两种聚类方法，并用聚类分析方法从背景干扰中提取出了目标的亮点特征，得到了清晰的目标图像。 |
| 6. | Because period narrow band signals are the main part of background noises , this thesis uses hardware description language to design a multi - band finite impulse response filter ( fir ) and downloads the program into filed programmable gate array to eliminate the period narrow - band interferences in the background noises
3 )在现场环境中，背景干扰主要是周期性的窄带，本文利用硬件描述语言( vhdl )设计了一个多带fir有限冲击响应滤波器。应用到可编程逻辑器件中，消除了背景噪声中的周期性干扰，为信号的进一步处理提供尽可能干净的信号。 |
| 7. | Applying it to more than 120 color images , experiment results show that the multi - pose face with two visible eyes in color images can be detected . in facial feature extraction , it includes three aspects . ( 1 ) a multi - pose face image normalization method is presented based on two pupils and the center point of the lip
这个算法具有较强的适应性和对各种背景干扰模式的稳健性等优点，对120多幅具有复杂背景的彩色图像实验表明，可以较为理想地从具有复杂背景的彩色图像中检测出双眼可视的多姿态的人脸。 |
| 8. | Two wedge interferometers are designed that the thickness of one is higher than the other . so when the incident coherent light through the interferometers can acquire two fringe patterns which having space shift , but the incident incoherent light only result in consistent intensity signal . through a differentiating amplifier , two signals subtract which can eliminate noise of background and result in higher contrast ratio fringe signals . this method largely improves the system and the ability of detection . the spacing of line fringes is a function of incident laser wavelength , by analyzing , we can extract the wavelength of incident laser . the optical unit analyzing and results also simulated with matlab
当背景光入射时，直接穿过干涉仪，仅发生强度的衰减，在两个探测平面上产生幅度基本一致的灰度信号，通过差分放大器，相消为零，从而抑制了背景干扰。当激光信号入射，穿过干涉仪时受到调制，在探测平面上产生干涉条纹。通过所设计的存在平均厚度差的双楔形干涉仪，两路干涉条纹图案出现相对移位：在两个探测平面对应的位置上，一路出现亮纹，另一路出现暗纹。 |
| 9. | The most importat characteristics of spr sensors are its capability in real - time monitoring the reaction of biomolecules on the surface of the sensor without the need of labeling and purification . the sensing technology of spr is especially suitable for the determination of inieractions between biological molecules
利用spr传感技术进行分析时速度快、可真正实现实时分析，且分析过程中不需要预先对样品进行标记，也不需要预先对混合物进行分离：同时spr传感技术还具有灵敏度高、背景干扰小的特点。 |
