KR20030084419A - Input description scheme and the method transforming feature of contents for adapting visual characteristic of user - Google Patents

Abstract

PURPOSE: An input information description scheme for adaptation to visual characteristic and a contents characteristic information conversion method are provided to obtain a sufficient quantity of information of digital multimedia suitable for characteristic of a disabled user. CONSTITUTION: A description scheme required for adaptation of contents includes a disability descriptor(202) for describing existence of disability, a type descriptor(203) for describing the type of disability, a grade descriptor(204) for describing a degree of disability, a surrounding environment descriptor(205) for describing environmental factors that affect disability, a sight descriptor(206) for describing the sight of a user, a conversion descriptor(207) for describing a desired conversion method, a descriptor(208) for describing a degree of conversion, and a descriptor for describing ownership related with conversion.

Description

INPUT DESCRIPTION SCHEME AND THE METHOD TRANSFORMING FEATURE OF CONTENTS FOR ADAPTING VISUAL CHARACTERISTIC OF USER}

The present invention adapts the content to the visual characteristics of the user and the surrounding environment suitable for the digital items that the visually impaired people to access (Access) by providing enough inaccessible information due to the personal characteristics of the disabled to share the digital items even the visually impaired The description relates to a description scheme and a content conversion method for an adaptive system.

MPEG, a video expert group, sets the standard for the next generation of open multimedia frameworks. MPEG-21 integrates the specifications of existing MPEG and other standards bodies, which can be found in a wide range of networks and devices in different community environments. In order to implement a multimedia framework that can use multimedia resources in a transparent and enhanced way, the standardization of digital item adaptation of MPEG-21 Section 7 is being promoted.

MPEG-21 digital item adaptation requirements focus mainly on device, protocol, network diversity, and normality preferences. However, considering the open multimedia frame, which is the basic spirit of MPEG-21, it is only simple information of normal people about age and gender of users about the characteristics of users who consume media. In particular, descriptors for the visually impaired are not yet defined.

An Open Source Library Automation System (AVANTI project) has been in Europe and the United States for the purpose of bridging the digital divide in terms of UMA (Universal Multimedia Access), but mainly for interface adaptation on various devices and the web. . Project for web-based tourism information systems AVANTI deals with the adaptation of browser design, information and screens for the disabled and the elderly, but it is limited to tourism information and user devices are limited to web browsers. Some products use optical filters to correct or improve color vision, but because of their price, they are only available to a limited number of people, which does not meet the needs of MPEG-21.

The present invention has been proposed to solve the above problems and to meet the requirements of MPEG-21, and to provide a technical structure and a method for converting feature information necessary for sufficient information acquisition of digital multimedia suitable for user disability characteristics. The purpose is.

1 is a block diagram showing the overall system configuration according to the present invention.

2 is a technical structural diagram of inputted information.

3 is a diagram illustrating a result of a conversion method for the feature information conversion unit.

4 is a flowchart of a feature information conversion method algorithm.

In order to achieve the above object, the present invention includes a method for applying a corresponding technology to a technology structure necessary for content adaptation. The present invention provides a disability descriptor that describes the presence or absence of a disability in the technical structure; Type descriptor for the type of failure; A grade descriptor describing the degree of disability; Environmental technicians who describe environmental factors affecting the failure; A vision technician describing the vision of the user; A conversion descriptor describing a desired conversion method; Changes describing the degree of conversion also include descriptors; descriptors relating to ownership rights associated with the conversion.

In addition, the present invention includes a process of transforming the feature information for obtaining the feature information of the content that the user does not normally obtain with the original content, the technician item and the process to select the process of transformation in the transformation process It includes.

The present invention includes four methods in the treatment process, that is, treatment by color contrast, treatment by texture, treatment by segmentation, and mixing of the above three elements.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram of a content conversion system configuration in consideration of user visual impairment characteristics according to an embodiment of the present invention. Referring to FIG. 1, when a user selects content to be found (100), and then enters a technical item related to a user's disability characteristics and an external environment through a failure measurement test (500) (200), Based on the conversion method selected based on the conversion process (300). Finally, the processed result is outputted and shown (400).

2 shows a description structure of a description item to be input. Referring to Fig. 2, the description structure is classified into the following seven descriptors in the user characteristic description structure 201. A failure descriptor 202 describing the presence or absence of a failure; A type descriptor 203 relating to the type of failure; A grade descriptor 204 describing the extent of the disorder; An environmental engineer 205 describing environmental factors affecting the failure; A vision technician 206 describing the vision of the user; A conversion descriptor 207 describing a desired conversion method; There is also a descriptor 208 that describes the degree of conversion.

3 is an example of conversion types for the feature information conversion unit.

301 is original content, and the content of the red weak person is difficult to distinguish because the background color and the semantic color are similar to the red color system. (302) is an example of a color contrast conversion method that increases the contrast between the color of the meaning and the background color. (303) is an example of a conversion method that hybridizes colors and textures. Is an example.

4 illustrates the overall algorithm of each conversion method, when the input description information 401 of FIG. 2 is input, and based on this information, the color and the contrast level which are obstacles are determined (402). When the selected content is input (403). The color part 404 and the color and texture of the attention are checked 405, and the selected conversion process 406-408 is entered.

When the texture and the contour shape 409 to be contrasted in each conversion process are determined, the contrast 410 is added to the final converted output 411. The extraction of color, texture, and segmentation by segmentation can be distinguished using the color, homogeneous texture, and shape descriptors of MPEG-7. In this case, these data are metadataed and delivered together with the content.

Two methods can be used for the output method as follows. 1) The converted content can be output. 2) Only the changed part, that is, the local position information and the conversion result can be delivered. This also increases the efficiency of delivery.

Anyone can freely use and recognize the media by delivering enough information to the visually impaired, without any additional equipment. It is also immediately applicable to MPEG-7 and MPEG-21.

Claims (15)

Technical structure and description of personal disability characteristic information and attention environment of the visually impaired. 2. The technical structure and descriptor of claim 1, wherein the representation of the descriptor includes a visual acuity indication. 2. The technical structure and technician of claim 1, wherein the technical descriptor includes an indication of the presence of color vision impairment. 2. The technical structure and descriptor of claim 1, comprising an indication of the type of color vision disorder in representing the descriptor. The technical structure and technician of claim 1, comprising an indication of the degree of color vision impairment in the representation of the technician. The technical structure and technician of claim 1, wherein the representation of the technician includes a light indication around the user. The technical structure and technician of claim 1, comprising a weather condition indication in the representation of the technician. The technical structure and technician of claim 1, wherein the representation of the technician comprises a vision indication. 2. The technical structure and descriptor of claim 1, wherein the representation of the descriptor includes a conversion type and a degree indication. And a method of converting feature information of content. The multimedia content description system according to claim 10, wherein the feature information is converted into texture information. The multimedia content description system according to claim 10, comprising a segmentation method by segmentation in the conversion of the feature information. 11. The multimedia content description system according to claim 10, wherein a single information transformation is fused in the transformation of the characteristic information. And a method of outputting only local information in output after conversion of feature information. 15. The system of claim 14, wherein the method for color, texture, and segmentation used in extracting and converting the feature information applies a descriptor of MPEG-7.