CAN CSA-ISO IEC 14496-11-07 CORR 6-2008 Information technology Coding of audio-visual objects Part 11 Scene description and application engine TECHNICAL CORRIGENDUM 6.pdf

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1、ICS 35.040 Ref. No. ISO/IEC 14496-11:2005/Cor.6:2007(E) ISO/IEC 2007 All rights reserved INTERNATIONAL STANDARD ISO/IEC 14496-11:2005 TECHNICAL CORRIGENDUM 6 Published 2007-10-15 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATIONINTERNATIONAL ELECTROTECHNICAL

2、 COMMISSION COMMISSION LECTROTECHNIQUE INTERNATIONALEInformation technology Coding of audio-visual objects Part 11: Scene description and application engine TECHNICAL CORRIGENDUM 6 Technologies de linformation Codage des objets audiovisuels Partie 11: Description de scne et moteur dapplication RECTI

3、FICATIF TECHNIQUE 6 Technical Corrigendum 6 to ISO/IEC ISO/IEC 14496-11:2005 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information. Technical Corrigendum 6:2008 toNational Standard of Canad

4、aCAN/CSA-ISO/IEC 14496-11:07Technical Corrigendum 6:2007 to International Standard ISO/IEC 14496-11:2005 has been adopted withoutmodification (IDT) as Technical Corrigendum 6:2008 to CSA Standard CAN/CSA-ISO/IEC 14496-11:07. ThisTechnical Corrigendum was reviewed by the CSA Technical Committee on In

5、formation Technology (TCIT)under the jurisdiction of the Strategic Steering Committee on Information Technology and deemed acceptablefor use in Canada.September 2008 International Organization for Standardization (ISO), 2007. All rights reserved. International Electrotechnical Commission (IEC), 2007

6、. All rights reserved. NOT FOR RESALE. ISO/IEC 14496-11:2005/Cor.6:2007(E) 2 ISO/IEC 2007 All rights reservedAfter 7.2.2.13.3.10: PROTO audioStereoBase, insert the following subclause: 7.2.2.13.3.11 PROTO audioVirtualStereo The audioVirtualStereo contains the following parameter: Data type Function

7、Default value Range Float virtualStereo 0 01 The audioVirtualStereo PROTO is used to generate a virtual stereo signal from a mono source signal, whereby virtualStereo=0 disables the effect and virtualStereo=1 enables the effect. With values between 0 and 1 the strength of the effect, measured as dec

8、orrelation between the 2 output channels, can be controlled. virtualStereo shall map to the params array as follows: virtualStereo = params 0 In 7.2.2.23 BitWrapper, replace: The type field indicates which node compression scheme must be used, 0 being the default. It is envisioned that future node c

9、ompression schemes may be developed for the same node. For this specification, AFX object code table of ISO/IEC 14496-1 defines the default schemes. with: The type field is used in the buffer mode of bitwrapper. It makes the distinction between different decoding methods for the same node. The value

10、 of the type field is specified by each tool using the bitwrapper mechanism. Insert the following subclause with respect to the alphabetic order of the nodes and renumber subsequent subclauses: 7.2.2.125 SynthesizedTexture 7.2.2.125.1 Node interface SynthesizedTexture exposedField MFVec3f Translatio

11、n exposedField MFRotation Rotation exposedField SFInt32 pixelWidth -1 exposedField SFInt32 pixelHeight -1 exposedField SFBool Loop FALSE exposedField SFFloat Speed 1.0 exposedField SFTime startTime 0 exposedField SFTime stopTime 0 exposedField MFString url eventOut SFTime duration_changed eventOut S

12、FBool isActive Technical Corrigendum 6:2008 toCAN/CSA-ISO/IEC 14496-11:07ISO/IEC 14496-11:2005/Cor.6:2007(E) ISO/IEC 2007 All rights reserved 37.2.2.125.2 Functionality and Semantics The semantics of this node are described in ISO/IEC 14496-19:2004: Information technology Coding of audio-visual obje

13、cts Part 19: Synthesized texture stream. The translation field is a sequence of N+1 vectors where N is the number of objects in the SynthesizedTexture stream. Each vector represents the initial 3D translation of a certain plane. The first vector (0) refers to the plane of the SynthesizedTextures Cam

14、era. The following pairs (n = 1N-1) refer to the plane of the nth Object appearing in the SynthesizedTexture stream. This information is combined with the respective Keyframe information of the Camera Scenario and the Object Animation. Similarly, the rotation field represents the initial 3D rotation

15、 of the respective aforementioned planes. The pixelWidth and pixelHeight fields specify the required scaled frame size of the rendered SynthesizedTexture node, in pixels. The default value 1 causes the respective dimension to preserve its authored value. The semantics of the remaining fields in the interface are identical to those of the corresponding fields in the MovieTexture node interface. Technical Corrigendum 6:2008 toCAN/CSA-ISO/IEC 14496-11:07