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Video quality estimating device, method, and program

A quality evaluation and video technology, applied in the field of video quality evaluation technology, can solve problems such as degradation and easy perception of quality

Active Publication Date: 2010-06-16
NIPPON TELEGRAPH & TELEPHONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In audio-visual communication services that transmit audio-visual media, quality degradation is easily perceived

Method used

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  • Video quality estimating device, method, and program
  • Video quality estimating device, method, and program
  • Video quality estimating device, method, and program

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0061] first reference figure 1 A video quality assessment device according to a first embodiment of the present invention will be described. figure 1 is a block diagram showing the arrangement of the video quality evaluation device according to the first embodiment of the present invention.

[0062] The video quality evaluation device 100 is constituted by an information processing device such as a computer that calculates input information. In audio-visual communication for transmitting audio-visual media encoded into a plurality of frames to an arbitrary terminal via a communication network, the video quality evaluation device 100 inputs evaluation conditions related to the audio-visual media, and by using a predetermined evaluation model, calculates the The evaluation value of the subjective video quality actually perceived by the audiovisual media on the Internet.

[0063] In this embodiment, subjective parameters corresponding to the main parameters input as the input ...

no. 2 example

[0127] Next, refer to Figure 11 with 12 A video quality assessment device according to a second embodiment of the present invention will be described. Figure 11 is a block diagram showing the arrangement of a video quality evaluation device according to a second embodiment of the present invention. exist Figure 11 Chinese and above figure 1 The same reference numerals designate the same or similar components. Figure 12 is a block diagram showing the arrangement of an evaluation model specifying unit of a video quality evaluation device according to a second embodiment of the present invention. exist Figure 12 Chinese and above figure 2 The same reference numerals designate the same or similar components.

[0128] The first embodiment takes as an example the case where the evaluation model designation parameter 132 corresponding to the input encoding bit rate is derived by referring to the evaluation model designation parameter derivation characteristic curve 131 p...

no. 3 example

[0170] First, refer to Figure 19 A video quality assessment device according to a third embodiment of the present invention will be described. Figure 19 is a block diagram showing the arrangement of a video quality evaluation device according to a third embodiment of the present invention.

[0171] The video quality evaluation device 200 is formed of an information processing device such as a computer that calculates input information. In audio-visual communication for transmitting audio-visual media encoded into a plurality of frames to an arbitrary terminal via a communication network, the video quality evaluation device 200 inputs evaluation conditions related to the audio-visual media, and calculates the viewer from the reproduction at the terminal by using a predetermined evaluation model. The evaluation value of the subjective video quality actually perceived by the audiovisual media on the Internet.

[0172] In this embodiment, in evaluating the main parameters corr...

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Abstract

When subjectively estimating a video quality for main parameters (121 / 221) by inputting an input encoded bit rate (121B / 221B) indicating an encoded bit quantity per unit time and an input frame rate (121A / 221A) indicating a frame quantity per unit time for a video medium, an estimation model specifying unit (112 / 212) specifies an estimation model (122 / 222) indicating the relationship between a video medium frame rate ( / encoded bit rate) and the subjective video quality according to the input encoding bit rate (121B / input frame rate (221A)), estimates the subjective video quality for the inputframe rate (121A / input encoded bit rate 221B) by using the specified estimation model (122 / 222), and outputs it as an estimated value (123 / 223).

Description

technical field [0001] The present invention relates to an audio-visual communication technology, and more particularly, to a video quality evaluation technology for evaluating the subjective video quality actually felt by a viewer when a terminal receives and reproduces audio-visual media encoded into multiple frames. Background technique [0002] Advances in high-speed broadband Internet access technologies have created expectations for audiovisual communication services that transmit audiovisual media including video and audio data between terminals or server terminals via the Internet. [0003] This audio-visual communication service improves audio-visual media transmission efficiency using encoded communication in which audio-visual media is encoded into multiple frames and transmitted using inter-image or intra-image autocorrelation of audio-visual media or human visual characteristics. [0004] On the other hand, best-effort networks such as the Internet for audio-vis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26H04N7/173H04N17/04H04N17/00H04N19/00H04N19/115H04N19/132H04N19/134H04N19/162H04N19/196
CPCH04N19/00781H04N19/00751H04N7/468H04N7/26196H04N19/002H04N7/50H04N7/26159H04N17/004H04L43/0894H04L43/08H04N7/26228H04N19/00127H04N7/26202H04N19/00236H04N19/00169H04N19/00206H04N19/61H04N19/132H04N19/146H04N19/154H04N19/156H04N19/164H04N19/587H04N17/00
Inventor 山岸和久林孝典
Owner NIPPON TELEGRAPH & TELEPHONE CORP
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