1、 Reference numberISO/IEC 15938-3:2002(E)ISO/IEC 2002Information technology Multimedia content description interface Part 3: Visual Technologies de linformation Interface de description du contenu multimdia Partie 3: Visuel National Standard of CanadaCAN/CSA-ISO/IEC 15938-3:04(ISO/IEC 15938-3:2002)In
2、ternational Standard ISO/IEC 15938-3:2002 (first edition, 2002-05-15) has been adopted without modification(IDT) as CSA Standard CAN/CSA-ISO/IEC 15938-3:04, which has been approved as a National Standard of Canadaby the Standards Council of Canada.ISBN 1-55397-313-5 January 2004The Canadian Standard
3、s Association (CSA), The Standards Council of Canada is theunder whose auspices this National Standard has been coordinating body of the National Standards system, produced, was chartered in 1919 and accredited by a federation of independent, autonomousthe Standards Council of Canada to the National
4、 organizations working towards the furtherStandards system in 1973. It is a not-for-profit, development and improvement of voluntarynonstatutory, voluntary membership association standardization in the national interest.engaged in standards development and certification The principal objects of the
5、Council are to foster activities. and promote voluntary standardization as a means CSA standards reflect a national consensus of of advancing the national economy, benefiting theproducers and users including manufacturers, health, safety, and welfare of the public, assisting consumers, retailers, un
6、ions and professional and protecting the consumer, facilitating domestic organizations, and governmental agencies. The and international trade, and furthering internationalstandards are used widely by industry and commerce cooperation in the field of standards.and often adopted by municipal, provinc
7、ial, and A National Standard of Canada is a standard whichfederal governments in their regulations, particularly in has been approved by the Standards Council ofthe fields of health, safety, building and construction, Canada and one which reflects a reasonableand the environment. agreement among the
8、 views of a number of capableIndividuals, companies, and associations across individuals whose collective interests provide to theCanada indicate their support for CSAs standards greatest practicable extent a balance ofdevelopment by volunteering their time and skills to representation of producers,
9、 users, consumers, andCSA Committee work and supporting the Associations others with relevant interests, as may be appropriateobjectives through sustaining memberships. The more to the subject in hand. It normally is a standardthan 7000 committee volunteers and the 2000 which is capable of making a
10、significant and timelysustaining memberships together form CSAs total contribution to the national interest.membership from which its Directors are chosen. Approval of a standard as a National Standard ofSustaining memberships represent a major source of Canada indicates that a standard conforms to
11、theincome for CSAs standards development activities. criteria and procedures established by the StandardsThe Association offers certification and testing Council of Canada. Approval does not refer to theservices in support of and as an extension to its technical content of the standard; this remains
12、 thestandards development activities. To ensure the continuing responsibility of the accreditedintegrity of its certification process, the Association standards-development organization.regularly and continually audits and inspects products Those who have a need to apply standards arethat bear the C
13、SA Mark. encouraged to use National Standards of CanadaIn addition to its head office and laboratory complex whenever practicable. These standards are subject in Toronto, CSA has regional branch offices in major to periodic review; therefore, users are cautioned centres across Canada and inspection
14、and testing to obtain the latest edition from the organizationagencies in eight countries. Since 1919, the preparing the standard.Association has developed the necessary expertise to The responsibility for approving National Standards meet its corporate mission: CSA is an independent of Canada rests
15、 with theservice organization whose mission is to provide an Standards Council of Canadaopen and effective forum for activities facilitating the 270 Albert Street, Suite 200exchange of goods and services through the use of Ottawa, Ontario, K1P 6N7standards, certification and related services to meet
16、 Canadanational and international needs.For further information on CSA services, write toCanadian Standards Association5060 Spectrum Way, Suite 100Mississauga, Ontario, L4W 5N6CanadaAlthough the intended primary application of this Standard is stated in its Scope, it is importantto note that it rema
17、ins the responsibility of the users to judge its suitability for their particular purpose.Registered trade-mark of Canadian Standards AssociationCAN/CSA-ISO/IEC 15938-3:04 description interface Part 3: VisualInformation technology Multimedia contentJanuary 2004 Canadian Standards Association CSA/1CA
18、N/CSA-ISO/IEC 15938-3:04Information technology Multimedia content descriptioninterface Part 3: VisualCSA PrefaceStandards development within the Information Technology sector is harmonized with internationalstandards development. Through the CSA Technical Committee on Information Technology (TCIT),C
19、anadians serve as the Canadian Advisory Committee (CAC) on ISO/IEC Joint Technical Committee 1 onInformation Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO memberbody for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of theInternati
20、onal Telecommunication Union (ITU), Canada participates in the International Telegraph andTelephone Consultative Committee (ITU-T).This International Standard was reviewed by the CSA TCIT under the jurisdiction of the StrategicSteering Committee on Information Technology and deemed acceptable for us
21、e in Canada. (Acommittee membership list is available on request from the CSA Project Manager.) From time to time,ISO/IEC may publish addenda, corrigenda, etc. The CSA TCIT will review these documents for approvaland publication. For a listing, refer to the CSA Information Products catalogue or CSA
22、Info Update orcontact a CSA Sales representative. This Standard has been formally approved, without modification, bythe Technical Committee and has been approved as a National Standard of Canada by the StandardsCouncil of Canada.January 2004 Canadian Standards Association 2004All rights reserved. No
23、 part of this publication may be reproduced in any form whatsoever without the prior permission ofthe publisher. ISO/IEC material is reprinted with permission. Where the words “this International Standard” appear in thetext, they should be interpreted as “this National Standard of Canada”. Inquiries
24、 regarding this National Standard of Canada should be addressed to Canadian Standards Association 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6 1-800-463-6727 416-747-4044www.csa.caICS 35.040 Ref. No. ISO/IEC 15938-3:2002/Cor.1:2004(E) ISO/IEC 2004 All rights reserved Informatio
25、n technology Multimedia content description interface Part 3: Visual TECHNICAL CORRIGENDUM 1 Technologies de linformation Interface de description du contenu multimdia Partie 3: Visuel RECTIFICATIF TECHNIQUE 1 Technical Corrigendum 1 to ISO/IEC 15938-3:2002 was prepared by Joint Technical Committee
26、ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information. In 4.1, add the following subclause at the end: 4.1.1 Wrapper of the schema The syntax of the description tools specified in this document assumes that a schema wrapper is prov
27、ided, which identifies the XML Schema namespace (XML Schema) and MPEG-7 namespace: The following tag is used to close the schema: Technical Corrigendum 1:2005 toNational Standard of CanadaCAN/CSA-ISO/IEC 15938-3:04Technical Corrigendum 1:2004 to International Standard ISO/IEC 15938-3:2002 has been a
28、dopted withoutmodification (IDT) as Technical Corrigendum 1:2005 to CAN/CSA-ISO/IEC 15938-3:04. This TechnicalCorrigendum was reviewed by the CSA Technical Committee on Information Technology (TCIT) under thejurisdiction of the Strategic Steering Committe on Information Technology and deemed accepta
29、ble for use inCanada.October 2005ISO/IEC 15938-3:2002/Cor.1:2004(E) 2 ISO/IEC 2004 All rights reservedIn 5.2.4, section “DescriptorID“, replace: The assignment of IDs to the descriptors is specified in Table 1. with: The assignment of IDs to the descriptor is specified in Table 1. The possible value
30、 of DescriptorID for GridLayout is one of 2, 4, 6, 7, 8, 12, 19, 21, and 26. In 5.2.4, replace: numOfPartX This attribute specifies the number of horizontal partitions in the grid over the image. numOfPartY This attribute specifies the number of vertical partitions in the grid over the image. with:
31、numOfPartX This attribute specifies the number of horizontal partitions in the grid over the image. The value of “0” is forbidden for this attribute. numOfPartY This attribute specifies the number of vertical partitions in the grid over the image. The value of “0” is forbidden for this attribute. In
32、 5.3.3.4 and 5.3.4.4, add the following sentence at the end of “DescriptorID“ semantics: The following values of DescriptorID are allowed: 2, 4, 6, 7, 8, 9, 12, 19, 21, and 26. In 5.3.3.4 and 5.3.4.4, add the following sentence at the end of “Descriptor“ semantics: The descriptor specified in this f
33、ield is extracted from the frame corresponding to the start of the corresponding time interval. In 6.2.3, replace: ColorTransMatjk 16 uimsbf with: ColorTransMatjk 16 simsbf In 6.5, replace all instances of “histogram”, “color histogram” and “HSV color histogram” with “normalized histogram”, “normali
34、zed color histogram” and “normalized HSV color histogram” respectively. In 6.5.4, add the following sentence at the end of first paragraph of section “Bit representation of Coefficients”: If, in the encoding process, the absolute value of the difference between amplitude and offset exceeds the maxim
35、um that can be represented using the assigned number of bits BN, the value is clipped to the maximum representable value. ISO/IEC 15938-3:2002/Cor.1:2004(E) ISO/IEC 2004 All rights reserved 3In 6.5.4, section “Bit representation of Coefficients”, replace: The input to the transform is an HSV Color H
36、istogram based on the definition of the uniform ColorQuantization descriptor with 16 bins in H, and 4 bins in each S and V (256 bins in total). with: The input to the transform is a normalized HSV Color Histogram based on the definition of the uniform ColorQuantization descriptor with 16 bins in H,
37、and 4 bins in each S and V (256 bins in total). The normalization means that after determination of the HSV Color Histogram each histogram entry has to be divided by the total number of pixels in the image. Then each normalized histogram entry has a value within the interval 0,1. Those values are su
38、bsequently uniformly quantized to 11 bits using nearest neighbour quantization. In 6.5.4, section “Bit representation of Coefficients”, remove “ (probability) ” from the third sentence after Table 15. In 6.6.4, replace: The DCT coefficients of each color component are derived from the corresponding
39、component of local representative colors. The selection algorithm of local representative colors is not normative. with: The DCT coefficients of each color component are derived from the corresponding component of resized picture, whose size is 8x8, from picture data. The original picture data shoul
40、d be divided into 64 (8x8) blocks and representative color of each block corresponds to each element of the resized picture. The selection algorithm of representative color is informative and a typical one is recommended in ISO/IEC 15938-8. In 6.6.4, replace: The 8x8 DCT coefficient matrix, c88, can
41、 be calculated from the 8x8 matrix of local representative colors, d88, as follows with: The 8x8 DCT coefficient matrix, c88, can be calculated from the resized picture d88, as follows In 6.6.4, replace: It should be noted that the invalid locations in d88 should be padded before the above process i
42、s performed using the average color of all valid representative colors. with: To apply this tool to arbitrary shaped region, the representative colors of the blocks which have no pixels inside the region should be padded with the mean value of the valid pixel of the resized picture. ISO/IEC 15938-3:
43、2002/Cor.1:2004(E) 4 ISO/IEC 2004 All rights reservedIn 7.2.1, replace Eq. 4 with: +=10360)0(2,),(),(DDPGprsPi4 and Eq. 6 with: ()()+=10360)0(22,DDiPipPGqrs6 In Table 38, 8.2.4, replace: ArtDE Reconstruction value with: MagnitudeOfART Reconstruction value In 8.3.2, replace the definition of element
44、Peak with: In 9.3.4, add the following sentence at the end of semantics of CoordCoodingLength: This field can only be set to one if the value of the attribute units is “00”, i.e. both horizontal and vertical coordinates are normalized by image size in the respective dimension. In 9.5.4, replace the
45、first sentence of SpaLocNumber semantics with: This field, which is only present in the binary representation, specifies the number of spatially localized activity parameters and the associated grid divisions of the video frames. Reference numberISO/IEC 15938-3:2002(E)ISO/IEC 2002INTERNATIONAL STAND
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