Traffic density analysis method based on encoded video
First Claim
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1. A traffic density analysis method comprising:
- decoding encoded video data obtained by encoding a video signal corresponding to an analysis region to obtain a decoded video signal and code information including mode information and vector information;
determining a moving object in units of a macroblock on the basis of the decoded video signal, the code information and a previously decoded video signal;
analyzing a macroblock determined as the moving object;
setting a specific region in a screen using an analysis result of the macroblock determined as the moving object; and
estimating a traffic density in the analysis region from information related to the moving object passing through the specific region.
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Abstract
A traffic density analysis method includes decoding encoded video data corresponding to an analysis region to obtain a decoded video signal and code information, determining a moving object in units of a macroblock on the basis of the decoded video signal, the code information and a previously decoded video signal, analyzing a macroblock determined as the moving object, setting a specific region in a screen using an analysis result of the macroblock, and estimating a traffic density in the analysis region from information related to the moving object passing through the specific region.
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Citations
12 Claims
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1. A traffic density analysis method comprising:
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decoding encoded video data obtained by encoding a video signal corresponding to an analysis region to obtain a decoded video signal and code information including mode information and vector information;
determining a moving object in units of a macroblock on the basis of the decoded video signal, the code information and a previously decoded video signal;
analyzing a macroblock determined as the moving object;
setting a specific region in a screen using an analysis result of the macroblock determined as the moving object; and
estimating a traffic density in the analysis region from information related to the moving object passing through the specific region. - View Dependent Claims (4, 5)
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2-3. -3, (canceled)
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6. A traffic density analysis method comprising:
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encoding a video signal corresponding to an analysis region to output encoded video data, a local decoded signal, and code information including mode information and vector information;
determining a moving object in units of a macroblock on the basis of the encoded video signal, the code information and a previous local decoded video signal;
analyzing a macroblock determined as the moving object;
setting a specific region in a screen using the local decoded signal; and
analyzing a traffic density in the analysis region from information related to a moving object passing through the specific region.
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7. A method for transmitting traffic information, comprising:
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capturing an image in a monitoring region to be monitored for a traffic density;
encoding a video signal corresponding to the image to output encoded video data;
decoding the encoded video data to output a decoded video signal and code information including mode information and vector information;
determining a moving object in units of a macroblock on the basis of the decoded video signal, the code information and a previously decoded video signal;
analyzing a macroblock determined as the moving object;
setting a specific region in a screen using an analysis result of the macroblock determined as the moving object;
estimating a traffic density in the monitoring region from information related to the moving object passing through the specific region; and
transmitting traffic information including the traffic density and video information. - View Dependent Claims (8, 11, 12)
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9-10. -10. (canceled)
Specification