A Surface-based Vacant Space Detection for an Intelligent Parking Lot
Ching-Chun Huang
A three-space example to illustrate the information from observation layer and scene layer for status inference.
We proposed a surface-based vacant parking space detection system. Unlike many car-oriented or space-oriented methods, the proposed system is parking-lot-oriented. In the system, we treat the whole parking lot as a structure consisting of plentiful surfaces. A surface-based hierarchical framework is then proposed to integrate the 3-D scene information with the patch-based image observation for the inference of vacant space. To be robust, the feature vector of each image patch is extracted based on the Histogram of Oriented Gradients (HOG) approach. By incorporating these texture features into the proposed probabilistic models, we could systematically infer the optimal hypothesis of parking statuses while dealing with occlusion effect, shadow effect, perspective distortion, and fluctuation of lighting condition in both day time and night time.
Results of vacant space detection.
Chingchun Huang, Yu-Shu Dai and Sheng-Jyh Wang "A Surface-based Vacant Space Detection for an Intelligent Parking Lot", IEEE International Conference on ITS Telecommunications (ITST), Sep., 2012. (EI) NSC100-2218-E-151-007.