@book{af88a0507beb11dc910b000ea68e967b,
title = "Crack Detection by Digital Image Processing",
abstract = "It is described how digital image processing is used for measuring the length of fatigue cracks. The system is installed in a Personal, Computer equipped with image processing hardware and performs automated measuring on plane metal specimens used in fatigue testing. Normally one can not achieve a resolution better than that of the image processing equipment. To overcome this problem an extrapolation technique is used resulting in a better resolution. The system was tested on a specimen loaded with different loads. The error σa was less than 0.031 mm, which is of the same size as human measuring with a microscope.",
keywords = "Crack Detections, Fatigue Cracks, Digital Image Processing, DIP, Crack Length Measurements, Crack Detections, Fatigue Cracks, Digital Image Processing, DIP, Crack Length Measurements",
author = "Janus Lyngbye and Rune Brincker",
note = "PDF for print: 14 pp. ",
year = "1990",
language = "English",
series = "Fracture and Dynamics",
publisher = "Dept. of Building Technology and Structural Engineering, Aalborg University",
number = "23",
address = "Denmark",
}