A Modified Pinhole Camera Model For Automatic Speed Detection Of Diagonally Moving Vehicle

A Modified Pinhole Camera Model For Automatic Speed Detection Of Diagonally Moving Vehicle

A Modified Pinhole Camera Model For Automatic Speed Detection Of Diagonally Moving Vehicle

Journal of Engineering Science and Technology Vol. 13, No. 6 (2018), pp. 1722 – 1734 (SCOPUS INDEX)

Indrabayu, R.Y. Bakti, I.S. Areni

Abstract

This research applies the Pinhole (PH) Camera Model method to calculate car speed in a video sequence by taking object displacement distance in the frame. The main contribution in this paper is the new calculation method called Diagonal Pinhole (Diagonal-PH). It has a capability in measuring diagonal and zigzag movement. This research considers three scenarios, i.e. overtaking motion, lane changing path and straight-line movement. The performance of the proposed system is evaluated using Root Mean Square Error (RMSE). The results show that the diagonal-PH method provides smaller RMSE than a vertical-PH method for each scenario. This proves that the modified pinhole has better accuracy for car speed detection in all scenarios.

Keywords: Camera projection, Car speed, Intelligent transport system, Pinhole camera model.