Abstract
We present three generations of prototypes for a contactless admission control system that recognizes people from visual features while they walk towards the sensor. The system is meant to require as little interaction as possible to improve the aspect of comfort for its users. Especially for people with impairments, such a system can make a major difference. For data acquisition, we use the Microsoft Kinect 2, a low-cost depth sensor, and its SDK. We extract comprehensible geometric features and apply aggregation methods over a sequence of consecutive frames to obtain a compact and characteristic representation for each individual approaching the sensor. All three prototypes implement a data processing pipeline that transforms the acquired sensor data into a compact and characteristic representation through a sequence of small data transformations. Every single transformation takes one or more of the previously computed representations as input and computes a new representation from them. In the example models presented in this paper, we are focusing on the generation of frontal view images of peoples’ faces, which is part of the processing pipeline of our newest prototype. These frontal view images can be obtained from colour, infrared and depth data by rendering the scene from a changed viewport. This pipeline can be modelled considering the data flow between data transformations only. We show how the prototypes can be modelled using modelling frameworks and tools such as Cinco or the Cinco-Product Dime. The tools allow for modelling the data flow of the data processing pipeline in an intuitive way.
Highlights
When using today’s admission control systems some kind of interaction is required to check permission for every individual
We presented three generations of prototypes for a contactless admission control system with high potential to be modelled with available modelling frameworks and tools
In order to show our prototypes’ potential to be modelled, we introduced the reader to Cinco, Dime and our custom Cinco-Product
Summary
When using today’s admission control systems some kind of interaction is required to check permission for every individual. In cases where the prediction is possibly wrong a fall back method for identification will be used This can be a PIN, password or a check card but it is possible to redirect the person to a staff member to be identified with human capabilities. The proposed system primarily improves the aspect of comfort for everybody who uses the admission control system as they no longer have to carry check cards or keys or remember PINs or passwords. We are currently focusing on the generation of frontal view images from people’s faces, which we will use to extract comprehensible and characteristic features for individuals This will allow for recognizing them in the application of an admission control system.
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