The Digital Surface Model (DSM) is specifically designed to represent the heights of ground elevations and the objects above the ground that are captured by lidar data. A DSM includes both the terrain and the features upon it, such as buildings, trees, and other structures, providing a comprehensive view of the surface that reflects actual elevations as measured by the lidar system.
In the context of lidar, it is important to distinguish between the models used to represent different aspects of the Earth's surface. The DSM captures the height of all features on the surface, making it essential for various applications, including urban planning, forestry, and environmental monitoring.
While other options such as the 3D Elevation Program and Perspective View may involve elevation data, they do not specifically define a height model for ground and above-ground objects in the same way that a Digital Surface Model does. The Pseudo-3D option also does not effectively capture the precise measurements and details needed for accurate elevation representation. Thus, the Digital Surface Model is the most accurate choice for measuring heights using lidar data.