International Journal of Applied Engineering Research, vol: 10,15 (2015)
Ultrasound computer tomography digital image processing for concrete hole inspection
Suryono S., Kusminarto K., Suparta G.B., Sugiharto A.
Abstract
Digital image processing of ultrasound computer tomography for concrete hole inspection has been done. This system is ubiquitous for testing, inspection, and assessment of concrete quality. The investigated image was generated from ultrasound tomography imaging using the 1 MHz immersion transducer. Data dimension is from the tomography acquisition 100 projection x 63 ray sum. This data was then back-projected and a cross-section tomography image was obtained. The property of the hole being imaged was figured out by processing the image using Matlab. The first step of this research is loading and cropping ultrasound tomography image for calculation of the images spatial resolution. The next step is tresholding to find out the shape of the hole being investigated. Calculation using image processing results in diameter, area, and position of the concrete hole. The results show that the investigated concrete hole diameter has a deviation of 0.06 cm or a relative error of 1.65% against standard measurements. The area of the hole has an average deviation of 0.61 cm2 or a 5.2% relative error compared to theoretical calculations. © Research India Publications.
Keyword: Image processing; Inspection; Spatial resolution; Ultrasound tomography