KS B ISO 19232-5:2021 Non-destructive testing — Image quality of radiographs —Part 5: Determination of the image unsharpness and basic spatial resolution value using duplex wire-type image quality indicators
2021KS B ISO 19232-5:2021 Non-destructive testing — Image quality of radiographs —Part 5: Determination of the image unsharpness and basic spatial resolution value using duplex wire-type image quality indicators
2005KS B ISO 19232-5:2005 Non-destructive testing-Image quality of radiographs-Part 5:Image quality indicators(duplex wire type)-Determination of image unsharpness value