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Picture transmission method, picture transmission method program, storage medium which stores picture transmission method program, and picture transmission apparatus

a transmission method and picture technology, applied in the field of picture transmission methods, picture transmission methods, storage media which store picture transmission methods, can solve the problems of reducing data compression rates, transmission destinations may not be able to reproduce clear pictures, and increasing data compression rates

Inactive Publication Date: 2009-05-14
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This approach ensures that users can view preferred portions of a moving picture stream at higher resolution, optimizing data transmission by reducing wasteful high-quality image transmission and addressing individual user preferences effectively.

Problems solved by technology

With such a real-time compression and transmission system in use, higher data compression rates necessarily increase the amount of the data dropped from the original moving picture data and a transmission destination may not be able to reproduce clear pictures (i.e. pictures of high qualities).
On the other hand, reduced data compression rates eventually make it impossible to transmit moving picture data over communication lines that have limited capacities.
One disadvantage of the solution above is that the specific region of each picture selected for the high-resolution transmission may differ from the one that is desired by a user.
Transmitting picture portions that are not desired by a user at high resolution may be wasteful.
Under the conventional scheme, a number of users may miss high-quality images of their preference.
The conventional method has failed to address the diverse user preferences where pictures are transmitted on a partial-region enhanced-quality basis.

Method used

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  • Picture transmission method, picture transmission method program, storage medium which stores picture transmission method program, and picture transmission apparatus
  • Picture transmission method, picture transmission method program, storage medium which stores picture transmission method program, and picture transmission apparatus
  • Picture transmission method, picture transmission method program, storage medium which stores picture transmission method program, and picture transmission apparatus

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first embodiment

(1) First Embodiment

(1-1) Structure of the First Embodiment

[0029]FIG. 1 is a block diagram of a moving picture distribution system 1 practiced as the first embodiment of this invention. In the moving picture distribution system 1, a transmitting side 3 transmits a moving picture stream over a network 2 such as the Internet for reception by a receiving side 4.

[0030]On the transmitting side 3, a camera 5 takes pictures of a desired object and outputs video data DV constituting moving pictures. A frame memory 6 holds the video data DV temporarily before output.

[0031]A region extraction device 7 forwards the video data DV unmodified from the frame memory 6 to a general view encoding device 8. The region extraction device 7 may then be notified of position information DP, as shown in FIG. 2, from a network reception device 13 regarding the video data DV destined for the general view encoding device 8. In that case, the region extraction device 7 establishes a partial picture region AR1 b...

second embodiment

(2) SECOND EMBODIMENT

[0052]FIG. 4 is a block diagram of a moving picture distribution system 31 practiced as the second embodiment of this invention. The moving picture distribution system 31 distributes moving pictures to a plurality of destinations. In the moving picture distribution system 31 of FIG. 4, the component parts with their functionally identical or equivalent counterparts already indicated in the moving picture distribution system 1 of FIG. 1 are designated by like reference numerals, and their descriptions are omitted where redundant.

[0053]In the moving picture distribution system 31, a transmitting side 33 causes a general view encoding device 8 to transmit a moving picture stream commonly to receiving sides 4A and 4B which are transmission destinations. More specifically, the transmitting side 33 first directs video data DV from a frame memory 6 through a region extraction device 37 to the general view encoding device 8. The encoding device 8 encodes the video data ...

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Abstract

A picture transmission method is disclosed which involves encoding moving picture data and transmitting the encoded data. The picture transmission method includes the steps of encoding firstly the moving picture data into a moving picture stream for transmission at a predetermined data transfer rate, and encoding secondly, based on position information acquired from a transmission destination, a part of the moving picture data which constitutes a partial picture region for transmission at a higher resolution than the first encoding step.

Description

CROSS REFERENCE[0001]This application is a continuation of and is based upon and claims the benefit of priority under 35 U.S.C. §120 for U.S. Ser. No. 10 / 133,420, filed Apr. 29, 2002, the entire contents of this application is incorporated herein by reference. U.S. Ser. No. 10 / 133,420 claims the benefit of priority under 35 U.S.C. §119 from Japanese Patent Application No. 2001-133770, filed respectively on May 1, 2001.BACKGROUND OF THE INVENTION[0002]The present invention relates to a picture transmission method, a picture transmission method program, a storage medium which stores the picture transmission method program, and a picture transmission apparatus. More particularly, the invention relates to techniques for distributing a moving picture stream over a network. According to the invention, picture data as a whole are first transmitted when compressed at a high compression rate. Based on position information acquired from a given transmission destination, part of the picture da...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04N7/26H04N7/173H04N19/115H04N19/134H04N19/167H04N19/172H04N19/189H04N19/50H04N21/2343H04N21/4728H04N21/6379
CPCH04N19/37H04N19/164H04N19/33H04N19/167H04N19/174
Inventor YASUDA, HIROYUKI
Owner SONY CORP