Laser interference effect evaluation method based on character of laser-spot and image feature

2016 ◽  
Author(s):  
Jianfeng Tang ◽  
Xiaolin Luo ◽  
Lingxia Wu
Keyword(s):  
Interference Effect ◽  
Evaluation Method ◽  
Image Feature ◽  
Laser Spot ◽  
Effect Evaluation ◽  
Laser Interference

scholarly journals Study on Effect Evaluation Method of Weak Gel Flooding Control in Ordinary Heavy Oil Reservoirs

2020 ◽  
Vol 213 ◽  
pp. 02020
Author(s):  
Fachao Shan ◽  
Lun Zhao ◽  
Anzhu Xu ◽  
Bing Bo ◽  
Gang Ma ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Evaluation Method ◽  
Characteristic Curve ◽  
Oil Reservoirs ◽  
Water Flooding ◽  
Effect Evaluation ◽  
Application Range ◽  
Heavy Oil Reservoirs ◽  
Single Well ◽  
Curve Method

Generally the dynamic methods are used to calculate the oil increase after flooding control in the oilfield, but the evaluation results of different methods are quite different, and the evaluation results are uncertain. Therefore, for flooding control well groups in heavy oil reservoirs, the water flooding characteristic curve method, decline method and net oil increase method are used to calculate the oil increase, and the influence of the method parameter values on the results are analyzed, and the parameter value limits and calculation errors of each method are determined. Based on this, the adaptability of each method is proposed. The results show that the effect evaluation of the whole region flooding control is suitable to use the water flooding characteristic curve method or the decline method, the effect evaluation of the single well group flooding control is more suitable to use the decline method, the net oil increase method is not recommended. The application range and parameter value limit of the effect evaluation method of flooding control are put forward, which can guide the actual production effect evaluation in the oilfield.

Study on Defogging Effect Evaluation Method in Atomization Image

2014 ◽  
Vol 672-674 ◽  
pp. 1972-1976
Author(s):  
Zhen Chen ◽  
Fan Wu
Keyword(s):  
Evaluation Method ◽  
Evaluation Methods ◽  
Image Contrast ◽  
Effect Evaluation ◽  
Edge Structure ◽  
Evaluation Result ◽  
Relative Contrast ◽  
Overall Evaluation ◽  
Edge Similarity ◽  
Human Eyes

For the problems of few current defogging effect evaluation methods and limited evaluation methods, it proposes an image clarity effect evaluation method: the method combined with relative contrast and edge similarity. This is because: the contrast degree of fog image and non-fog image is obviously different. While improving image contrast degree, it should also try to make the edge structure of recovery image and reduced image consistent to prevent the recovery image from distorting. The experiment proves that this method can effectively evaluate the clarity effect of each algorithm, and the evaluation result and the subjective feelings of the human eyes are consistent. Compared with the existing evaluation methods, it obtains overall evaluation conclusion and also has a good practicability and reliability.

A Corpus Based Method for Evaluating the Teaching Effect of Electronic Engineering English

2021 ◽  
Vol 7 (5) ◽  
pp. 1222-1229
Author(s):  
Yong LIU
Keyword(s):  
Quantitative Analysis ◽  
Evaluation Method ◽  
Evaluation Model ◽  
Evaluation Methods ◽  
Effect Evaluation ◽  
Application Performance ◽  
English Teaching ◽  
Electronic Engineering ◽  
Quantitative Analysis Method ◽  
Standard Value

The existing evaluation methods have the problem of imperfect teaching effect evaluation model, which leads to the low reliability of the evaluation index. This paper designs a corpus based quantitative analysis method for teaching effect evaluation of Electronic Engineering English. Based on the mathematical principle of radial basis function, this paper uses corpus to analyze the distribution characteristics of Electronic Engineering English courses quantitatively, and uses association rules algorithm to build an English teaching effect evaluation model to comprehensively judge the importance of each factor. Experimental results: the average reliability of the two existing evaluation methods is 1.0751 and 0.5455 respectively, and the average reliability of the evaluation method is 0.7983, which shows that the reliability of the evaluation method is closer to the standard value of 0.8, which proves that the evaluation method of Electronic Engineering English teaching effect integrated with quantitative analysis of corpus has better practical application performance good.

Dynamic Assessment of Laser-Dazzling Effects Based on the Character of Laser-Spot and Image Feature

2014 ◽  
Vol 41 (6) ◽  
pp. 0609004 ◽  
Author(s):  
钱方 Qian Fang ◽  
孙涛 Sun Tao ◽  
郭劲 Guo Jin ◽  
王挺峰 Wang Tingfeng
Keyword(s):  
Dynamic Assessment ◽  
Image Feature ◽  
Laser Spot

Image Metrics Analysis of Laser Interference Effect Based on Edge Strength Similarity

2014 ◽  
Vol 43 (10) ◽  
pp. 1010005
Author(s):  
吴云龙 WU Yun-long ◽  
孙晓泉 SUN Xiao-quan ◽  
闫飞 YAN Fei ◽  
邵立 SHAO Li ◽  
徐银 XU Yin
Keyword(s):  
Interference Effect ◽  
Laser Interference ◽  
Edge Strength ◽  
Image Metrics

scholarly journals A Comprehensive Evaluation Method of Bench Blast Performance in Open-Pit Mine

2020 ◽  
Vol 10 (16) ◽  
pp. 5398
Author(s):  
Mingqing Liu ◽  
Jun Liu ◽  
Mengyang Zhen ◽  
Futian Zhao ◽  
Zhimin Xiao ◽  
...  
Keyword(s):  
Evaluation System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Open Pit ◽  
Effect Evaluation ◽  
Empirical Methods ◽  
Blasting Operation ◽  
Comprehensive Evaluation Method ◽  
Blast Design ◽  
Blast Performance

In blasting operation, some undesirable impacts, such as fly-rock, fragmentation, and back break, are induced. If the blasting design is not optimized, these mentioned impacts would reduce the blasting efficiency. To improve and optimize the blast design, blasting effect evaluation is essential. Due to the complexity of interactions among blasting parameters, empirical methods may not be appropriate for blast design optimization. A two-level mathematical model based on fuzzy mathematics, is proposed in this work. In total, 11 typical parameters were chosen and classified into three groups. The blasting effect is evaluated from three aspects, and then the comprehensive evaluation is given. A blasting effect evaluation system was developed based on the mentioned method on the platform of VC++. Some other techniques, such as image processing, were integrated into the system, which allowed for obtaining all of the parameters rapidly and conveniently. The system was applied in practical bench blast engineering. The results obtained from the system can provide effective information for the optimization of the next blast design.

Study on the Effect Evaluation of Spinescence Application on Segregating Gratings of Expressway - Taking Wu (Ding) – Kun (Ming) Expressway as Example

2014 ◽  
Vol 937 ◽  
pp. 419-423
Author(s):  
Yi Wei Li ◽  
Yi Shen ◽  
Qiang Meng
Keyword(s):  
Evaluation System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Isolation Effect ◽  
Effect Evaluation ◽  
Comprehensive Evaluation Method ◽  
The Evaluation System

In order to evaluate the application effect of spinescence as an alternative to metal segregating gratings of expressway, the evaluation system is built. By using the methods of AHP and FCE the comprehensive isolation effect evaluation of Solanum deflexicarpum is carried out. The result shows that the comprehensive evaluation method can guide and enhance the effect of future spinescence application on segregating gratings engineering of expressway.

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