Evaluation method for watching comfort level caused by rolling subtitles of different speed based on EEG

A technology of scrolling subtitles and evaluation methods, which is applied in the fields of electronic digital data processing, color TV parts, TV system parts, etc. standards and specifications

Inactive Publication Date: 2017-05-24
TIANJIN UNIV
View PDF7 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Scrolling subtitles will cause parallax changes when scrolling. The playback speed of scrolling subtitles is a key factor for viewing comfort. A good scrolling speed will cause the viewer a very comfortable visual effect, while an unreasonable scrolling speed will prevent viewers from accessing the video Information and subtitle information, the viewing experience of stereoscopic content is reduced, and even cause problems such as dry eyes, dizziness, vomiting and other stereoscopic discomfort
Because the production principle of stereoscopic video subtitles is different from traditional two-dimensional subtitle production, there is no unified standard and specification for subtitle production for stereoscopic video

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Evaluation method for watching comfort level caused by rolling subtitles of different speed based on EEG
  • Evaluation method for watching comfort level caused by rolling subtitles of different speed based on EEG
  • Evaluation method for watching comfort level caused by rolling subtitles of different speed based on EEG

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] In order to make the solution of the present invention clearer and easier to implement, so as to more highlight the advantages and objectives of the present invention, the following further elaborates and describes the embodiments of the present invention in conjunction with the accompanying drawings.

[0029] 101: Production of three-dimensional materials

[0030] The visual stimulus used to study rolling captions is produced by AutodeskMaya software, such as Figure 1a , Figure 1b As shown, the character model always remains at the fixed parallax in the screen. The subtitles are placed at 0.8° in front of the screen. The subtitles scroll from the right side of the screen to the left side of the screen at different angular speeds. Figure 1a Subtitles shown Figure 1b The subtitles shown change. In order to make the stereo video material closer to the real scene, during the material production process, the camera parameters are set strictly in accordance with the real scene. ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to an evaluation method for the watching comfort level caused by rolling subtitles of different speed based on an EEG. The evaluation method comprises the steps that three-dimensional materials are made, and the rolling subtitles are enabled to roll to the other side of a screen from one side of the screen according to different angular speed; as for different angular speed of the rolling subtitles, a testee is enabled to perform subjective evaluation on the watching comfort level; the subjective experimental result of the testee is analyzed, i.e. the comfort level of the rolling subtitles under different angular speed is analyzed so that the range of the angular speed causing watching discomfort can be obtained; the rolling subtitle materials of different angular speed are selected for measuring the brain wave of the testee, and EEG signals are preprocessed; the frequency domain characteristics are extracted out of the preprocessed EEG signals; as for the subjective experimental result, the obtained data samples are marked as the comfort class and the discomfort class; and data dimension reduction is performed by using a Fisher ratio method, and a SVM classifier is established and trained.

Description

[0001] Technical field: [0002] The invention relates to the field of evaluating the quality of rolling captions in stereo videos. [0003] Background technique: [0004] With the rapid development of three-dimensional technology, three-dimensional video and products will become more and more popular in our lives, and rolling subtitles, as one of the important means of inserting information in the process of video playback, can enable people to obtain information other than the content to be watched. While watching the video, we can get news in time, such as weather forecasts, sports events, major accidents and other information. At present, three-dimensional subtitles are mainly static subtitles, and there is little research on rolling subtitles at home and abroad. Therefore, the research on rolling subtitles is helpful to add comfortable rolling subtitles to stereoscopic videos. Rolling subtitles will cause parallax changes when scrolling. The playback speed of rolling subtitles ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/278H04N13/00H04N17/00G06F17/50
CPCG06F30/20H04N5/278H04N13/183H04N17/004
Inventor 沈丽丽彭科
Owner TIANJIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap