Vanishing point line that lies in the plane , which is defined by the equation . Using perspective pinhole projections, a point on projected on the image plane will have coordinates defined as, This is the parametric representation of the image of the line with as the parameter. When it stops at the point on the axis of the image plane. This is the vanishing point corresponding to all parallel lines with slope in the plane . All vanishing points associated with different lines with different slopes belonging to plane will lie on the axis, which in this case is the horizon
Point-to-point Lee model Point-to-point Lee model The Lee model for point-to-point mode is a radio propagation model that operates around 900 MHz. Built as two different modes, this model includes an adjustment factor that can be adjusted to make the model more flexible to different regions of propagation. This model is suitable for using in data collected in a specific area for point-to-point links. Frequency: 900 MHz band The Lee model for point to point mode is formally expressed as: formula_1 where, "L" = The median path loss. Unit: decibel (dB) "L" = The reference path loss along 1 km. Unit: decibel (dB)