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In this work we study the methods for pedestrian tracking in video sequences and indicate various applications of these methods ranging from surveillance systems to aiding the visually impaired persons. First, we define the general problem of object tracking that comprises the tasks of object detection, identifying the flow of object location in consecutive video images and finally analysis of the...
The paper reports the proof-of-concept tests, i.e. ergonomic, non-mobility tests with participation of blind volunteers and emphatic field trials (i.e. with the participation of sighted individuals) of a teleassistance system for the visually impaired. The system consists of two terminals connected by the GSM and Internet networks. The mobile terminal, housing a digital camera, GPS receiver and headset,...
An electronic system for correcting GPS readouts is reported in the paper. Different sources of data are acquired, i.e.: accelerometer, gyroscope, GPS receiver, raster maps of terrain, that are processed by a Monte-Carlo simulation algorithm based on particle filtering. These data are fused to estimate the most probable geographical location of the system user. A prototype was designed, build and...
The paper describes a visual odometry system based on stereovision camera and Kalman filter. A common problem of odometry is that a next pose is estimated on the base of a previous one. Once a location is measured incorrectly, the error propagates on next locations. Inaccuracies quickly accumulate, which at the end leads to significant errors. The system is most sensitive to direction estimation,...
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