Traffic density analysis apparatus based on encoded video
First Claim
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1. A traffic density analysis apparatus comprising:
- a video decoder configured to decode encoded video data obtained by encoding a video signal corresponding to an analysis region and to output a decoded video signal and code information including mode information and vector information, the video decoder including a video memory to store at least one previously decoded video signal;
a determination unit configured to determine a moving object in units of a macroblock on the basis of the decoded video signal, the code information and the previously decoded video signal;
a macroblock analyzer configured to analyze a macroblock determined as the moving object; and
a traffic density estimator configured to set a specific region in a screen using an analysis result of the macroblock analyzer and to estimate a traffic density in the analysis region from information related to the moving object which passes through the specific region.
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Abstract
A traffic density analysis apparatus includes a video decoder configured to decode encoded video data obtained by encoding a video signal corresponding to an analysis region and to output a decoded video signal, and an analyzer configured to set a specific region in a screen using the decoded video signal output from the video decoder and to analyze a traffic density in the analysis region from information related to a moving object which passes through the specific region.
22 Citations
12 Claims
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1. A traffic density analysis apparatus comprising:
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a video decoder configured to decode encoded video data obtained by encoding a video signal corresponding to an analysis region and to output a decoded video signal and code information including mode information and vector information, the video decoder including a video memory to store at least one previously decoded video signal;
a determination unit configured to determine a moving object in units of a macroblock on the basis of the decoded video signal, the code information and the previously decoded video signal;
a macroblock analyzer configured to analyze a macroblock determined as the moving object; and
a traffic density estimator configured to set a specific region in a screen using an analysis result of the macroblock analyzer and to estimate a traffic density in the analysis region from information related to the moving object which passes through the specific region. - View Dependent Claims (2, 3, 4, 5)
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6. A traffic density analysis apparatus comprising:
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a video encoder configured to encode a video signal corresponding to an analysis region and to output encoded video data, a local decoded signal and code information including mode information and vector information, the video encoder including a video memory to store at least one previous local decoded video signal;
a determination unit configured to determine a moving object in units of a macroblock on the basis of the encoded video data, the code information and the previous local decoded video signal;
a macroblock analyzer configured to analyze a macroblock determined as the moving object; and
a traffic density estimator configured to set a specific region in a screen using the local decoded signal generated by the video encoder and to analyze a traffic density in the analysis region from information related to a moving object which passes through the specific region.
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7. A traffic information system comprising:
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at least one monitor camera unit configured to capture an image in a monitoring region to be monitored for a traffic density and to encode a video signal corresponding to the image to output encoded video data;
at least one terminal configured to request traffic information and to receive the traffic information; and
a monitor center comprising a video decoder configured to decode the encoded video data to output a decoded video signal and code information including mode information and vector information, the video decoder including a video memory to store at least one previously decoded video signal, a determination unit configured to determine a moving object in units of a macroblock on the basis of the decoded video signal, the code information and the previously decoded video signal, a macroblock analyzer configured to analyze a macroblock determined as the moving object, and a traffic density estimator configured to set a specific region in a screen using an analysis result of the macroblock analyzer and to estimate a traffic density in the analysis region from information related to the moving object which passes through the specific region, and a transmitter configured to transmit traffic information including the traffic density and video information in response to a request of the terminal. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification