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A THRESHOLD-FREE FILTERING ALGORITHM FOR AIRBORNE LIDAR POINT CLOUDS BASED ON EXPECTATION-MAXIMIZATION
Airborne LiDAR Point clouds Filtering Ground points Expectation-maximization Intensity
2018/5/14
Filtering is a key step for most applications of airborne LiDAR point clouds. Although lots of filtering algorithms have been put forward in recent years, most of them suffer from parameters setting o...
Strong-field above-threshold photoemission from sharp metal tips
Strong-field above-threshold photoemission sharp metal tips
2010/10/20
We present energy-resolved measurements of electron emission from sharp metal tips driven with
low energy pulses from a few-cycle laser oscillator. We observe above-threshold photoemission with a pho...