Real Time Speed Estimation of Moving Vehicles from Side View Images from an Uncalibrated Video Camera
In order to estimate the speed of a moving vehicle with side view camera images, velocity vectors of a sufficient number of reference points identified on the vehicle must be found using frame images. This procedure involves two main steps. In the first step, a sufficient number of points from the v...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2010-05-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/10/5/4805/ |
| _version_ | 1798041684743815168 |
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| author | Sedat Doğan Mahir Serhan Temiz Sıtkı Külür |
| author_facet | Sedat Doğan Mahir Serhan Temiz Sıtkı Külür |
| author_sort | Sedat Doğan |
| collection | DOAJ |
| description | In order to estimate the speed of a moving vehicle with side view camera images, velocity vectors of a sufficient number of reference points identified on the vehicle must be found using frame images. This procedure involves two main steps. In the first step, a sufficient number of points from the vehicle is selected, and these points must be accurately tracked on at least two successive video frames. In the second step, by using the displacement vectors of the tracked points and passed time, the velocity vectors of those points are computed. Computed velocity vectors are defined in the video image coordinate system and displacement vectors are measured by the means of pixel units. Then the magnitudes of the computed vectors in image space should be transformed to the object space to find the absolute values of these magnitudes. This transformation requires an image to object space information in a mathematical sense that is achieved by means of the calibration and orientation parameters of the video frame images. This paper presents proposed solutions for the problems of using side view camera images mentioned here. |
| first_indexed | 2024-04-11T22:25:00Z |
| format | Article |
| id | doaj.art-ce354f312c4343debca16271ae0a83ae |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T22:25:00Z |
| publishDate | 2010-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-ce354f312c4343debca16271ae0a83ae2022-12-22T03:59:47ZengMDPI AGSensors1424-82202010-05-011054805482410.3390/s100504805Real Time Speed Estimation of Moving Vehicles from Side View Images from an Uncalibrated Video CameraSedat DoğanMahir Serhan TemizSıtkı KülürIn order to estimate the speed of a moving vehicle with side view camera images, velocity vectors of a sufficient number of reference points identified on the vehicle must be found using frame images. This procedure involves two main steps. In the first step, a sufficient number of points from the vehicle is selected, and these points must be accurately tracked on at least two successive video frames. In the second step, by using the displacement vectors of the tracked points and passed time, the velocity vectors of those points are computed. Computed velocity vectors are defined in the video image coordinate system and displacement vectors are measured by the means of pixel units. Then the magnitudes of the computed vectors in image space should be transformed to the object space to find the absolute values of these magnitudes. This transformation requires an image to object space information in a mathematical sense that is achieved by means of the calibration and orientation parameters of the video frame images. This paper presents proposed solutions for the problems of using side view camera images mentioned here.http://www.mdpi.com/1424-8220/10/5/4805/vehicle speed estimationvideotraffic monitoringoptical flow |
| spellingShingle | Sedat Doğan Mahir Serhan Temiz Sıtkı Külür Real Time Speed Estimation of Moving Vehicles from Side View Images from an Uncalibrated Video Camera Sensors vehicle speed estimation video traffic monitoring optical flow |
| title | Real Time Speed Estimation of Moving Vehicles from Side View Images from an Uncalibrated Video Camera |
| title_full | Real Time Speed Estimation of Moving Vehicles from Side View Images from an Uncalibrated Video Camera |
| title_fullStr | Real Time Speed Estimation of Moving Vehicles from Side View Images from an Uncalibrated Video Camera |
| title_full_unstemmed | Real Time Speed Estimation of Moving Vehicles from Side View Images from an Uncalibrated Video Camera |
| title_short | Real Time Speed Estimation of Moving Vehicles from Side View Images from an Uncalibrated Video Camera |
| title_sort | real time speed estimation of moving vehicles from side view images from an uncalibrated video camera |
| topic | vehicle speed estimation video traffic monitoring optical flow |
| url | http://www.mdpi.com/1424-8220/10/5/4805/ |
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