The photo-video processing application development to measure surface flow velocity

Abstract

Measuring flow velocity in natural waterway is complex, time-consuming and complicated, along with the expensive instruments. Furthermore, the operators grievously need to have expertise knowledge, including processing and analyzing the results which take a long time. The objective of this paper, is to develop the photo-video processing application to measure surface flow velocity in the Chi River as a case study. The flow velocity was measured with 3 sets of Acoustic Doppler Current Profiler for comparisons. The results showed that the surface velocity values ​​​​from the application were measured with the averages of 0.72, 0.75, and 0.69 m/sec, which the samples of the photo-video from smart phone are green and yellow weeds and a log, respectively. The surface flow velocity was measured by the Acoustic Doppler Current Profiler showed that current velocity was with the average of 0.75 m/sec. Which shows that measuring surface flow velocity with photo-video processing application is a simple method and can find surface flow velocity close to the actual measured value which is convenient, expeditious and close to standard tool.