Share This Article:

Single-Phase Velocity Determination Based in Video and Sub-Images Processing: An Optical Flow Method Implemented with Support of a Programmed MatLab Structured Script

Abstract Full-Text HTML XML Download Download as PDF (Size:574KB) PP. 290-294
DOI: 10.4236/jsea.2015.86029    3,030 Downloads   3,464 Views  


Important in many different sectors of the industry, the determination of stream velocity has become more and more important due to measurements precision necessity, in order to determine the right production rates, determine the volumetric production of undesired fluid, establish automated controls based on these measurements avoiding over-flooding or over-production, guaranteeing accurate predictive maintenance, etc. Difficulties being faced have been the determination of the velocity of specific fluids embedded in some others, for example, determining the gas bubbles stream velocity flowing throughout liquid fluid phase. Although different and already applicable methods have been researched and already implemented within the industry, a non-intrusive automated way of providing those stream velocities has its importance, and may have a huge impact in projects budget. Knowing the importance of its determination, this developed script uses a methodology of breaking-down real-time videos media into frame images, analyzing by pixel correlations possible superposition matches for further gas bubbles stream velocity estimation. In raw sense, the script bases itself in functions and procedures already available in MatLab, which can be used for image processing and treatments, allowing the methodology to be implemented. Its accuracy after the running test was of around 97% (ninety-seven percent); the raw source code with comments had almost 3000 (three thousand) characters; and the hardware placed for running the code was an Intel Core Duo 2.13 [Ghz] and 2 [Gb] RAM memory capable workstation. Even showing good results, it could be stated that just the end point correlations were actually getting to the final solution. So that, making use of self-learning functions or neural network, one could surely enhance the capability of the application to be run in real-time without getting exhaust by iterative loops.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Nascimento, A. , Costa Bortoni, E. , Gonçalves, J. , Duarte, P. and Mathias, M. (2015) Single-Phase Velocity Determination Based in Video and Sub-Images Processing: An Optical Flow Method Implemented with Support of a Programmed MatLab Structured Script. Journal of Software Engineering and Applications, 8, 290-294. doi: 10.4236/jsea.2015.86029.


[1] Mehdizadeh, P. (2006) Worldwide Multiphase and Wet Gas Metering Installations. Production Technology Report 03232007, 2007.
[2] Zuzunaga, A., et al. (2013) A Survey of Non-Invasive and Semi-Invasive Flow Meters for Mining Applications: Understanding and Selecting the Right Technology for the Application. BI0497. Intern-ational Meeting on Mining Plan Maintenance (MAPLA), Santiago.
[3] Zheng, Y. and Zhang, Q. (2004) Simultaneous Measurement of Gas and Solid Holdups in Multiphase Systems Using Ultrasonic Technique. Chemical Engineering Science, 59, 3505-3514.

comments powered by Disqus

Copyright © 2018 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.