Image coding apparatus, image decoding apparatus and image processing system
First Claim
1. An image coding apparatus comprising:
- an importance level determination unit which determines, by frame, an importance level of a moving image of a person taken with a camera based on an amount of a characteristic obtained from a facial image of the person;
a coding unit which encodes frames of the moving image;
a packetization unit which transforms the frames, which have been encoded, into packets;
a tag attachment unit which attaches a priority tag reflecting the importance level to the packet header; and
a transmission unit which transmits packets with the priority tag to a network which includes a router with a packet priority control function.
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Accused Products
Abstract
An importance level determination unit receives: input from a camera of frames of moving images taken; input from a switch connected to a server which is operated manually by hand; and voice input from a microphone. Based on these it determines the importance level of each image frame. An encoder compresses and encodes the image frames obtained by the camera and generates moving picture streams. A packetizer packetizes the moving picture streams and gives them to a tag attachment unit. The tag attachment unit attaches the importance level set for the respective image frames to packet headers of the moving picture streams as a priority tag. A transmission unit transmits packets with a priority tag to a network which includes a router with a packet priority control function.
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Citations
14 Claims
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1. An image coding apparatus comprising:
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an importance level determination unit which determines, by frame, an importance level of a moving image of a person taken with a camera based on an amount of a characteristic obtained from a facial image of the person;
a coding unit which encodes frames of the moving image;
a packetization unit which transforms the frames, which have been encoded, into packets;
a tag attachment unit which attaches a priority tag reflecting the importance level to the packet header; and
a transmission unit which transmits packets with the priority tag to a network which includes a router with a packet priority control function. - View Dependent Claims (2, 3, 4)
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5. An image decoding apparatus comprising:
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a receiving unit which receives multiple moving picture streams that have been divided into packets with a priority tag attached to each header from a network which includes a router with a packet priority control function;
a priority determination unit which obtains the priority tag from each header of multiple packets received during a specified period and determines the moving picture stream whose packets have the highest priority tag received during the specified period to be a priority moving picture stream;
a decoding unit which decodes each of the multiple moving picture streams and regenerates multiple moving images; and
a synthesis unit which synthesizes the multiple moving images so that a moving image regenerated from the priority moving picture stream is highlighted when it is displayed. - View Dependent Claims (6, 7)
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8. An image processing system in which an image decoding apparatus is connected to multiple image coding apparatuses via a network, wherein
each of the multiple image coding apparatuses comprises: -
an importance level determination unit which determines, by frame, an importance level of a moving image taken with a camera;
a coding unit which encodes frames of the moving image;
a packetization unit which transforms the frames, which have been encoded, into packets;
a tag attachment unit which attaches a priority tag reflecting the importance level to the packet header; and
a transmission unit, which transmits packets with the priority tag to a network which includes a router with a packet priority control function, and the image decoding apparatus comprises;
a receiving unit which receives moving picture streams that have been divided into packets with the priority tag attached to each header from each of the multiple image coding apparatuses via the network;
a priority determination unit which obtains the priority tag from each header of multiple packets received during a specified period and determines the moving picture stream whose packets have the highest priority tag received during the specified period to be a priority moving picture stream;
a decoding unit which decodes each of the moving picture streams from the multiple image coding apparatuses and regenerates multiple moving images; and
a synthesis unit which synthesizes the multiple moving images so that a moving image regenerated from the priority moving picture stream is highlighted when it is displayed. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A computer program product comprising:
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a receiver module which receives multiple moving picture streams that have been divided into packets with a priority tag attached to each header from a network which includes a router with a packet priority control function;
a determination module which obtains the priority tag from each header of multiple packets received during a specified period and determines the moving picture stream whose packets have the highest priority tag received during the specified period to be a priority moving picture stream;
a regeneration module which decodes each of the multiple moving picture streams and regenerates multiple moving images; and
a synthesis module which synthesizes the multiple moving images so that a moving image regenerated from the priority moving picture stream is highlighted when it is displayed.
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Specification