Application of LADAR in the Analysis of Aggregate Characteristics (2012) / Chapter Skim
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Pages 80-85
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80 1. Scope 1.1 This standard covers the determination of aggregate characteristics using gradation and shape, angularity, and texture analysis determined by means of image analysis.
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81 3.2.2 Flat and Elongated -- those particles having a ratio of longest dimension to shortest dimension greater than a specified value. Flatness Ratio (2)
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82 including a visual image taken under fluorescent light, an image taken under the infrared laser with a wavelength of 805 nm while keeping OSW switch at Port 2, and an image under the red laser with a wavelength of 675 nm while keeping OSW switch at Port 1. 7.1.4 In the interface of SXV, select "Histogram" to check for correct exposure level.
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83 and is used to remove small variations in background. Entering a value of 50 will force the program to ignore background variations smaller than 50 pixels in diameter.
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84 conf., and N calculated in the table representation in Figure D-5. If the program selected the wrong value of N, replace it with the correct one shown in Figure D-5.
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85 7.2.8 Enter the tray height as measured by micrometer in step 7.1.2. Press the "Relative Z" button to convert to relative surface height.
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