WO2000054512A1 - Method and apparatus for coding moving picture image - Google Patents
Method and apparatus for coding moving picture image Download PDFInfo
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- WO2000054512A1 WO2000054512A1 PCT/JP2000/001354 JP0001354W WO0054512A1 WO 2000054512 A1 WO2000054512 A1 WO 2000054512A1 JP 0001354 W JP0001354 W JP 0001354W WO 0054512 A1 WO0054512 A1 WO 0054512A1
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- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
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Definitions
- the encoded video Z is the encoded video Z
- the present invention relates to a coding Z-decoding device in an information transmission system to be used.
- moving pictures and audio are compressed to a small amount of information.
- Compression coding techniques for video signals include techniques such as motion compensation, discrete cosine transform (DCT), subordinate coding, pyramid coding, and variable-length coding. Also, a method combining them has been developed.
- the international standard for video coding is ISOMPEG-1, MPEG-2, ITU-TH.26. 1, H.262, H.263
- ISOMPEG-1 ISOMPEG-1
- MPEG-2 MPEG-2
- Is an ISOMPEG system ITU-TH.221, H.223.
- a moving picture signal is divided for each frame, and furthermore, the frame is divided
- the encoding is performed for each unit such as GOB (Group Of Bock) divided into regions, macroblocks, etc., and for each frame, GOB, and macroblock.
- GOB Group Of Bock
- header information indicating the encoding mode and the like is applied D. These header information are necessary for decrypting the entire frame, G • B, and the like.
- the header information contains errors in the transmission path / storage medium, and if the errors cannot be correctly decoded by the video encoding device, the header information is not used. Frames and GOBs with header information cannot be decoded correctly, and the quality of the reproduced moving image in the moving image decoding apparatus will be significantly degraded. become .
- the unity of the bit sequence is determined by the information that indicates what the rule S has been, and what rules have been encoded.
- the header in which the above header information is very important is, for example, the prediction type of the currently decoded frame (the code in the frame). Encoding between frames, encoding between frames, Etc.), information indicating the timing at which the frame is displayed (time reference), or the step size when performing quantization. Information.
- the prediction type of the frame is originally an encoding between frames, and it does not matter what the cause is. Then, an error is mixed in the bit system U, and the bit system is changed to a bit pattern indicating the encoding in the frame. In this case, even if the actual information after that has been transmitted correctly, the decoding side judges that the signal is the result of intra-frame encoding. As a result, it will not be decoded correctly in the end.
- Such mixing of errors can cause a moving image to be transmitted via a wireless transmission path, such as a wireless TV phone, a portable information terminal, or a wireless digital TV receiver. Occurs frequently when using an accumulating system.
- the error rate is about 100,000 to 1,000,000 times that of satellite communication. It is impossible to make a sufficient correction just by making an error correction on a column.
- the information that can be duplicated using HEC includes information necessary for encoding an arbitrary shape image. If V ⁇ P header information is lost due to transmission error when an image of an arbitrary shape is decoded in object units, decoding can be performed correctly. If not, there was a serious problem.
- the first invention is based on an encoding unit that encodes an input moving image to generate a bit sequence, and encoding information obtained by the encoding unit.
- the cohesive power of a given bit sequence S It is composed by extracting important information as information that indicates whether it is encoded or not based on rules such as The important information component and the synchronization signal that generates the synchronization signal A signal generator, and a synchronizing signal output from the synchronization generator to the bit sequence encoded by the encoder, and reconfigured by the important information composing unit.
- a video encoding device having a bit sequence reconstructing unit for reconstructing a bit sequence by adding important information.
- the second invention is important information in a normal coding system in which the important information forming unit in the first invention encodes a frame from the coded information in units of a rectangular area.
- a normal image related important information configuration part that composes certain normal image related information
- an arbitrary shape encoding method in which an image in a frame is encoded in units of an arbitrary shape image region from encoded information.
- Shape information related important information constructing the arbitrary shape image related important information, which is important information, and determine whether the encoded image is an arbitrary shape image from the encoded information.
- An arbitrary-shape encoding determining unit for determining an arbitrary-shape image when the arbitrary-shape encoding determining unit determines that the image is an arbitrary-shape image; and a switching unit for outputting important information related to the arbitrary-shape image. Multiplex information and output of switching unit That provides an image encoding device that is either found configuration and multiplexer you.
- the third invention is to encode a moving image to obtain a bit system IJ including synchronization information, and to form a group of a certain bit sequence in this encoding.
- Coded data including a bit string added as important information as header information as information indicating what kind of rule was used to encode the data.
- a decoding unit for decoding an image bit sequence from an input bit sequence, a decoding unit for decoding an image bit sequence, and a decoding unit for decoding an image bit sequence from an input bit sequence.
- a synchronization signal detector for detecting a synchronization signal from the image bit sequence and notifying the decoder of the synchronization signal, and decoding information of the decoder.
- An image decoding apparatus which comprises important information configured from header information output from a decoding unit, and notifies the decoding unit of the important information.
- the fourth invention is a normal image-related important information forming section in which the important information forming section in the third invention forms normal image-related important information from the header information.
- Arbitrary-shape coding judging unit that determines whether the image being decoded is an arbitrary-shape image from information, and arbitrary shape that constitutes arbitrary-shape image-related important information from the header information
- An image-related important information forming unit ; and a first switching unit for inputting header information to the arbitrary-shape image-related information reconstructing unit when the arbitrary shape encoding determining unit determines that the image is an arbitrary shape image.
- the arbitrary shape encoding determination unit determines that the image is an arbitrary shape image, it is composed of a second switching unit that outputs important information related to the arbitrary shape image.
- Provide equipment When the arbitrary shape encoding determination unit determines that the image is an arbitrary shape image, it is composed of a second switching unit that outputs important information related to the arbitrary shape image.
- the fifth aspect of the invention is that a coding section for coding an input moving image to obtain a bit sequence, and a certain number of bits from coding information obtained by the coding section.
- An important information component that is composed of a group of columns that is coded based on what rules and extracts important information as information that indicates
- a bit sequence division unit that divides a bit system encoded by the encoding unit, and a bucket composed of important information reconstructed by the important information construction unit.
- a header header creating section for creating a header, a bit header U divided by a bit row dividing section, and a header header generating section. The generated bucket header and To make a bucket for use.
- an image decoding apparatus having a packet configuration unit.
- the important information component of the fifth invention is an arbitrary shape image-related important information component that forms the arbitrary shape image-related important information from the encoded information.
- Extended header insertion judgment unit that determines whether to add an extended header holding important information related to the arbitrary shape image to the bucket header, and an extended header insertion Image decoding that consists of a switching unit that inputs the header information to important information related to the arbitrary shape when it is determined that the extended header is to be inserted by the judgment unit.
- a seventh aspect of the present invention is to encode a moving image to obtain a bit sequence, and to describe a certain bit sequence in this encoding.
- a moving image having a bit sequence in which important information as information indicating whether or not it is encoded based on the rule is added as bucket header information.
- a decoding device for decoding coded data comprising: a separation unit for separating image bit system IJ and a socket header information from an input bit sequence; A decoding unit for decoding the bit string; an error checking unit for determining whether or not there is no error from the decoding information of the decoding unit; . From the header information, a certain number of bits are used to indicate whether or not the IJ's cohesive force S is coded based on the rules, etc.
- An eighth invention for providing an image decoding device having a key information component for notifying important information to a decoding unit is provided by the key information component of the seventh invention.
- Bucket Arbitrary shape image related important information constructing part that constitutes arbitrary shape image related important information from header information, and extended header from packet header information is attached to the bucket header.
- the extended header insertion judgment section that determines whether or not the force D is being applied, and the extension header insertion judgment section determines that the extension header is inserted.
- an image decoding device comprising: a switching unit for inputting packet header information into important information relating to an arbitrary shape when the packet header information is input.
- the present invention is based on the assumption that, in video coding, a header is provided for the coded data, and an extended header is provided for the header.
- the extended header can also include the important information in the arbitrary shape image coding method. Therefore, even if the header is partially broken, the image can be decoded for the part having a healthy header.
- the out-of-synchronization problem of the video bucket VP can be solved, that is, the video / noise problem can be solved.
- the packet VP is a ticket that starts with the synchronization signal RM, and even if an error has occurred earlier and an out-of-synchronization has occurred, re-synchronization is performed with the synchronization signal RM. Because of these advantages, it is highly resistant to noise during transmission, and even in the case of arbitrary-shaped image encoding, it is possible to use conventional rectangular images. It is possible to provide a moving picture coding technique capable of providing the same error resistance as coding.
- FIG. 1 is a diagram showing a basic configuration of an encoding unit according to the first embodiment of the present invention.
- FIG. 2 is a diagram illustrating a detailed basic configuration of an important information configuration unit and a bit string reconfiguration unit of an encoding unit according to the first embodiment of the present invention.
- FIG. 3 is a diagram showing a basic flow of a bit string reconfiguring unit according to the first embodiment of the present invention.
- FIG. 4 is a diagram showing an extended header format of VP in the first embodiment of the present invention.
- FIG. 5 is a diagram showing a basic configuration in a decoding unit according to the first embodiment of the present invention.
- FIG. 6 is a diagram illustrating a detailed basic configuration of an important information configuration unit in the decryption unit according to the first embodiment of the present invention.
- FIG. 7 is a diagram for explaining a codeword configuration used in the present invention.
- FIG. 8 is a diagram illustrating an example explaining the effect of variable-length coding.
- FIG. 9 is a diagram showing that variable-length coding is performed on important information.
- FIG. 10 is a basic configuration diagram of an encoding unit according to the second embodiment of the present invention.
- FIG. 11 is a detailed configuration diagram of an important information configuration unit of an encoding unit according to the second embodiment of the present invention.
- FIG. 12 is a diagram showing an example of an extended packet header according to the second embodiment of the present invention.
- FIG. 13 is a diagram (with markers) showing an example of an extended bucket header according to the second embodiment of the present invention.
- FIG. 14 is a diagram showing a basic configuration of a decoding unit according to the second embodiment of the present invention.
- FIG. 15 shows the weight of the decryption unit in the second embodiment of the present invention.
- the figure which shows the detailed structure of a required information structure part.
- FIG. 16 is a diagram illustrating encoding of an arbitrary-shaped image.
- Figure 17 illustrates the decoding of an arbitrary-shaped image.
- Fig. 18 shows the VOP structure of MPEG-4.
- Figure 19 shows the VP structure of MPEG-4.
- Figure 20 is a diagram showing the VP header format of MPEG-4.
- Figure 21 is a diagram showing the problems of normal VP.
- Figure 22 shows the effect of normal VP.
- FIG. 23 is a diagram showing the effect of VP when HEC is used.
- Fig. 24 is a diagram showing necessary information when an image is synthesized and reproduced when decoding an arbitrary-shaped image.
- FIG. 25 is a diagram illustrating an example of a wireless moving image transmission system to which the encoding / decoding device according to the third embodiment of the present invention is applied.
- FIG. 26 is a diagram illustrating an encoding device according to a fourth embodiment that corresponds to the encoding device according to the first embodiment
- FIG. 27 is a diagram illustrating a decoding device according to a fourth embodiment that corresponds to the decoding device according to the first embodiment.
- FIG. 28 is a diagram illustrating a decoding device according to a fifth embodiment corresponding to the encoding device according to the second embodiment
- FIG. 29 is a diagram illustrating a decoding device according to a fifth embodiment corresponding to the decoding device according to the second embodiment
- FIG. 30 is a view showing a flowchart of the decoding apparatus according to the third embodiment.
- FIG. 1 shows a basic configuration of a video encoding device according to the first embodiment of the present invention.
- the output of the encoding unit 101 is connected to the important information forming unit 102 and the bit string reconstructing unit 104.
- the output of the important information configuration unit 102 is connected to the bit sequence reconfiguration unit 104 together with the output of the synchronization signal generation unit 103.
- the output of the bit string reconstruction unit 104 is connected to the multiplexing unit 105.
- the output of the multiplexing unit 105 is connected to the transmission line 106.
- the encoding unit 101 encodes the input image signal 131 and outputs it to the bit-sequence reconstructing unit 104, and furthermore, encodes the encoded image signal 131 when encoding. It is configured to output 33 to the important information configuration section 102.
- the important information constructing unit 102 receives the encoded information 133 when the encoding is performed by the encoding unit 101, selects only the important information necessary for decoding, and outputs it. It is configured as follows.
- the synchronizing signal generator 103 generates the synchronizing signal 135 at an arbitrary interval, and the bit string reconstructing unit 104 operates as the synchronizing signal generator 103.
- the synchronous signal 13 5 is inserted into the bit system IJ 13 2, and thereafter, if necessary, the important information 13 4 output from the important information constructing unit 10 2 Is configured to be input and output in a predetermined format.
- the multiplexing unit 105 converts the bit system U136 reconstructed by the bit string reconstructing unit 104 into other data (for example, audio data and other objects). Multiplexed together with the encoded bit sequence) This is configured to be output to the transmission path Z storage medium 106 as a conversion bit system ij 13 37.
- the input image signal 1331 of the moving image is encoded by the encoding unit 101.
- the bit system ij 132 that is coded and output by the coding unit 101 is input to the bit system reconstruction unit 104.
- the encoded information 133 when encoded by the encoding unit 101 is input to the important information forming unit 102, and only the important information 133 necessary for decoding is selected. Is output.
- the synchronization signal 135 output from the synchronization signal generation unit 103 is inserted into the bit frame IJ 132 at arbitrary intervals, and the bit sequence is reconstructed. After that, if necessary, the important information 134 output from the important information composition unit 102 is inserted in the determined format.
- the bits reconstructed by the bit string reconstructing unit 104 are input to the multiplexing unit 105, and the other data (for example, audio data, other data) is input to the multiplexing unit 105.
- a multiplexing process is performed together with a bit sequence obtained by encoding an object, etc.), and a multiplexed bit system Ij 1337 is output to the transmission path / storage medium 106.
- the synchronization signal 135 output from the synchronization signal generator 103 at any interval is provided.
- the important information 134 output from the important information constituent unit 102 is provided in accordance with the determined format, if necessary. It is inserted by the bit string reconstruction unit 104. Therefore, information necessary for image coding and decoding of an arbitrary shape in MPEG-4, for example, information of the width VW of the image size is required for image coding of an arbitrary shape.
- vop—shape—coding—type VSCT
- CCRD change—conv—ratio—disable
- the frame equivalent is called the video object plane "Video Object Plane”.
- V ⁇ P Video Object Plane
- Video Packet (hereafter called VP) starts with a sync signal (Resync Marker, hereafter called RM). This is a packet, and it is possible to re-synchronize with this sync signal even if an error has occurred earlier and an out-of-sync condition has occurred.
- VP Video Packet
- RM Sync Marker
- the VOP header information includes the video 'object * plane VOP encoding type (intra-frame encoding, inter-frame encoding, etc.) ), Time reference, step size, etc. are included. Without this information, no decoding of all video 'notes VP' was possible ( Figures 21A and 21B).
- the header extension code HEC is defined in the header of the video 'note' VP, and according to this value. After that, it was possible to re-state the important information in the V ⁇ P header.
- FIGS. 21A and 21B This format is shown in FIGS. 21A and 21B.
- the video object plane VOP starts with a V ⁇ P header followed by data.
- the video format is followed by a video format.
- the video object plan V ⁇ P will be damaged, the Even if one or two data sets are broken after the data set, the information on the VOP header and the data can be used for a normal VP header and data set. It was decryptable.
- Video 1 shows that only the header of the bucket VP and the data that is paired with it are corrupted.
- the first region of the image is the video 'object, because the plane VOP and its data portion are not broken. Since the image is decoded normally, the next second area is erroneously decoded and the degraded image is decoded, and the next third area and the subsequent areas are decoded normally. Although it was broken, most could be decoded as a beautifully reproduced image.
- the real-time transfer protocol has been attracting attention as a gateway for use in transmitting moving image / audio data. That is, in the case of a protocol such as TCP, since there is no time information attached to each bucket, the receiving side must reproduce the received data at any time. I could't know what was good. Therefore, when the data is transmitted in a bucket, if the data is moving image data or audio / sound data, the data is successfully reproduced on the receiving side. I could't do that.
- RTP is a protocol suitable for transmission of real-time data.
- an extension header can be defined for each application.
- the V ⁇ P header information is double-equipped in the VP header using HEC. Even if the VOP header is lost, if the VOP header is duplicated by the HEC in the VP header, it can be used for subsequent data. It was possible to decrypt the data correctly.
- the information that can be duplicated by using HEC does not include information necessary for image coding of an arbitrary shape. For this reason, header information is more powerful in encoding an arbitrary-shaped image than a rectangular image, even though there is no problem if it is a conventional rectangular image. A major problem was that, because of the fact that this was done, it was not possible to duplicate it.
- the width of the image size vop-width (hereinafter, referred to as VW) is set in the VOP header.
- height vop—height (hereinafter referred to as VH).
- VH height vop—height
- VHMSR horizontal—mc—spatial—ref
- VVMSR y coordinate vop—vertical—mc—spatial—ref
- VOP shape coding type “vop—shape—coding—type (hereinafter referred to as VSCT)” that indicates the coding mode of the shape information
- VSCT shape—coding—type
- CCRD change-conv-ratio-di-saposition
- the double header of the VP header by the MPEG-4 HEC does not protect this information.
- the present system can provide the same error resistance as the conventional rectangular image coding even in the case of arbitrary shape image coding.
- the important information configuration unit 102 and the bit string reconfiguration unit 104 which are important configurations of the present invention in the above configuration, will be described in detail.
- the important information forming unit 102 includes a normal image-related important information forming unit 206, an arbitrary shape image-related important information forming unit 200, an arbitrary shape encoding determining unit 208, and a multiplexing unit. It is composed of a conversion unit 210.
- the normal image-related important information forming unit 206 receives the coding information 133 from the coding unit 101 and receives the normal coding.
- information that is determined to be important for example, coding mode, time reference, etc.
- Arbitrary-shape image related important information configuration section 207 configured to output to section 210
- Select important information related to encoding for example, image size, position, encoding mode, reduction conversion mode, etc.
- the arbitrary shape encoding determination unit 208 is a unit that determines whether the encoded image is a normal rectangular image or an arbitrary shape image.
- the switching unit 209 which outputs the result as a judgment signal 240, forms a normal image-related important information according to the judgment signal 240 from the arbitrary shape coding judgment unit 208.
- the switching control as to whether or not to output the important information related to the arbitrary shape image 239 from the unit 207 to the multiplexing unit 210 is performed.
- the multiplexing unit 210 includes a normal image-related important information 238 from the normal image-related important information forming unit 206 and an arbitrary shape coding determination unit 210 in arbitrary shape image coding. It is configured so that the arbitrary information related to the arbitrary shape image output from the multiplexed information 239 is multiplexed and output as the important information 134.
- the coded information 133 from the coding unit 101 includes the normal image-related important information forming unit 20, which is a component of the important information forming unit 102. 7, and in the normal image-related important information forming unit 207, information that is determined to be important at the time of normal encoding (for example, encoding mode or data). Is selected, the selected information is output to the multiplexing unit 210 as important image-related important information 238. It is empowered. Therefore, the important information related to the normal image 238 includes the coding mode time and information that is determined to be important in normal coding, such as reference. Will be gathered.
- Important information related to arbitrary shape image coding eg, image size, position, coding mode, reduction conversion mode, etc.
- important information related to arbitrary shape image is selected, and important information related to arbitrary shape image Then, it is output to the multiplexing unit 210.
- the arbitrary shape encoding determination unit 208 determines whether the encoded image is a normal rectangular image or an arbitrary shape image. In both cases, the judgment result is output as a judgment signal 240.
- the switching unit 209 is controlled by the judgment signal 240 to output the arbitrarily-shaped image-related important information 239 from the normal image-related important information forming unit 207. Controls whether to switch between them.
- the multiplexing unit 210 multiplexes the normal image-related important information 238 and the arbitrarily-shaped image-related important information 239 in the case of arbitrarily-shaped image coding, and outputs the multiplexed information as important information 138. To force.
- the multiplexing unit 2 is used as important information 138 in which the normal image-related important information 238 and the arbitrarily-shaped image-related important information 239 are multiplexed. It can output as much as 10 bits. In the case of normal image encoding, only normal image related important information 238 can be output as important information 334.
- the bit string reconstructing section 104 is composed of the MB boundary determining section 201, the counter 202, and the synchronous signal inserting determining section 204. 3. It consists of a header information input section 205 and a power calculation section 206.
- the MB boundary determining unit 201 is provided by the encoding unit in the preceding stage. Bits to be encoded and input in 101, and the data of the bits ij in the system IJ 132 are the boundary of the macro block MB.
- the code amount counter unit 202 is encoded by the preceding encoding unit 101 and is input. This is for counting the number of bits of the system bit ijl32.
- the synchronous signal insertion determination section 203 determines that the MB boundary determination section 201 determines the MB boundary according to the bit system ij 132, and the force is also determined by the corresponding bit.
- an insertion permission signal 2 34 is output. It is a thing.
- the header information input section 205 generates header information from the input important information 134 and the synchronization signal 135, and generates a synchronization signal insertion determination section 210. If it is determined in step 3 that the insertion is permitted, the added header information 23 7 is added to the encoded bit system 13 2 in the adder 20 6. Output .
- the adder 206 receives the bit system IJ 132 that is encoded and input by the encoder 101 and the output of the header information inserter 205. This is a section for adding the result and outputting it as a reconstructed bit system ij 136 of the bit string reconstructing section 104.
- the bit string reconstructing unit 104 When the bit string reconstructing unit 104 having such a configuration is input with the bit string 1332 encoded by the encoding unit 101 in the preceding stage, the bit string reconstructing unit 104 receives the bit string. Is input to an MB boundary determination unit 201 and a code amount counter unit 202, which are one of the components of the bit sequence reconstruction unit 104. In this MB boundary determination unit 201, the input bit system 1 32 Determine if it is at the MB boundary.
- the code amount counter unit 202 counts the code amount of the bit system lj 132.
- the determination in the MB boundary determination unit 201 is determined to be the MB boundary, and the code amount in the power counter 202 is counted down. If the default value exceeds a certain value, an insertion permission signal 234 is generated, and the header information insertion section is generated.
- the header information insertion unit 205 stores the input important information 1
- the header information is created from 3 4 and the sync signal 13 5, and if the sync signal insertion determination section 203 determines that insertion is permitted, the encoded bit To add the header information 237 created in the system ij1 32, send it to the calculation unit 206. As a result, the power calculation unit 206 inserts the header information 2337 into the encoded bit system U 132, and the reconstructed bit system. U 1 3 6 is output. This bit system is the output of the bit string reconstruction unit 104.
- the bit system 13j2 of the image data which is coded and input by the coding unit is examined, and becomes the boundary position of the macroblock MB.
- an insertion permission signal 234 is generated.
- the header information based on the input important information 134 and the synchronization signal 135 created in the header information insertion unit 205 is described in the above bit pattern. It can be added to 132.
- the important information constructing unit 102 is configured such that the normal image-related important information constructing unit 206, which is one of the constituents, is normally configured based on the encoding information 133 from the encoding unit 101.
- Information that is deemed important when encoding Information (for example, coding mode, time reference, etc.) is selected and used as normal image-related important information 238.
- the arbitrarily-shaped image-related important information component 207 which is one of the constituent elements in the crucial information component 102, includes important information related to arbitrarily-shaped image coding (eg, For example, image size, position, encoding mode, reduction conversion mode, etc.) are selected, and this is set as important information relating to the arbitrary shape image.
- the header information to be inserted into the bit sequence should include important information related to normal image information and important information related to arbitrary shape images. This allows the VP header to include information necessary for image reproduction of MPEG-4 encoded data.
- Figure 3 shows a flowchart for creating header information.
- the bit sequence reconstructing unit 104 first, as the first stage (step S502), the bit input from the encoding unit 101 is input. For System IJ, let's judge whether it is the MB (macro block) boundary position or not.
- step S503 if it is determined that the input signal has been ⁇ , it is determined whether or not the synchronization signal R ⁇ should be introduced. This determination can be made by any algorithm of the user.
- an algorithm that inserts a synchronization signal R ⁇ if the number of bits exceeds a certain number of bits from the immediately preceding synchronization signal When a certain number of MBs is exceeded from the synchronization signal, various methods can be used, such as determining whether to insert an RM along the shape in the image.
- the video socket VP is a socket that starts with the synchronization signal RM. Even if an error has occurred before that and an out-of-synchronization has occurred, the video socket VP is reproduced with the synchronization signal RM. Synchronization is possible.
- step S503 If it is determined in step S503 that the synchronization signal RM is to be inserted, insert the RM, and insert the VP header following the RM (see the step in FIG. 3). Top S504). Then, the process proceeds to step S505.
- step S505 a judgment is made as to whether or not the important information of the VP header is duplicated as an extended header.
- step S507 it is determined whether or not the image is an arbitrary-shaped image.
- important information in the encoding of the arbitrary-shaped image in the VOL header is selected and output (step S508 in FIG. 3).
- the VP header is generated and inserted into the bit sequence.
- Fig. 4 shows a configuration example of the VP header for an arbitrary-shaped image.
- Figure 2 shows a configuration example of the VP header for an arbitrary-shaped image.
- the extended header EX is a ea eader power
- 26r contains important information in arbitrary shape image coding, that is, the width (VW), height (VH) of the image, the X coordinate (VHMSR) for pasting the image, and the Y coordinate (VVMSR ), A flag (CCRD) indicating whether the shape information is reduced and transformed and encoded, and a shape information encoding type (intra-frame encoding Z frame Information (VSCT) is added to the data.
- VW width
- VH height
- VHMSR X coordinate
- VVMSR Y coordinate
- a flag indicating whether the shape information is reduced and transformed and encoded
- a shape information encoding type Intra-frame encoding Z frame Information (VSCT) is added to the data.
- the important information in the arbitrary shape image coding is not limited to the above information, but may be different depending on the use of the application. It is possible to increase the amount of information, or conversely, reduce the amount of information. However, it is necessary for the transmitting side and the receiving side to have a common understanding of the header format.
- the VP header is provided with an extended header to provide important information in normal image coding, as well as synchronization signals and any shape in image coding, including synchronization signals. It is possible to include important information in the image encoding. Even if the header is partially broken, it has a healthy header. In other words, the image can be decoded. Further, since there is a synchronization signal, the problem of the video socket VP being out of synchronization can be solved. That is, the video bucket VP starts with the synchronization signal RM. This is a kit, and it is possible to perform resynchronization with the synchronization signal RM even if an error has occurred earlier and an out-of-synchronization has occurred.
- the conventional rectangular image code has high resistance to noise during transmission, and even in the case of arbitrary shape image coding. It is possible to provide a moving picture coding technique capable of providing the same error resistance as coding.
- the decoding unit will be described. According to the decoding unit according to the first embodiment shown in FIG. 5, the output of the separation unit 302 to which the coded bit sequence is input is output to the decoding unit 3. 0 3 and connected to synchronous detection section 304. The output of the synchronous detection section 304 is connected to the other input of the decoding section 303. The output of the decoding section 303 is connected to the error checking section 305. The output of the error checking section 305 is connected to the important information forming section 306 together with the output of the decoding section 303. The output of the important information configuration section 303 is connected to the decryption section 303.
- the separating unit 302 separates the bit system ij 33 1 received from the transmission path Z storage medium 106 into the image bit system IJ 33 2 and other data. It is set up to do this.
- the synchronization detection section 304 detects the synchronization signal RM from the bit system ij 332 output from the separation section 302. Further, the decoding unit 303 decodes the image bit system IJ332 that is output after being separated from the separation unit 302 and outputs the image data. Generate. At this time, the decoding unit 303 is configured to perform the decoding process while synchronizing with the synchronization signal detected by the synchronization signal detection unit 304. Yes.
- V 0 P video object play
- the checking section 300 checks the decoding information 330 output from the decoding section 303 so that no error occurs during the decoding operation. If an error is detected, the error check unit 3005 determines that the important information configuration unit 303 has an error in the decoding process. It is configured to notify the user of this fact and suppress output of important information to the decoding unit 303.
- the decoding unit 303 is configured to perform processing corresponding to the error. Further, after performing processing corresponding to the error, the decryption section 303 performs decoding work from the position of the next synchronization signal detected by the synchronization detection section 304. Go.
- the bit system 331 received from the transmission path Z storage medium 106 is transmitted to the image bit by the separation unit 302. It is separated into the system ij 332 and other data. The other data is sent to the corresponding decoding unit.
- the image bit 33j 32 separated by the separation unit 302 is input to the decoding unit 303 and subjected to decryption. At this time, the decoding process is performed while the synchronization signal is detected by the synchronization signal detection unit 304 from the middle of the bit system IJ332.
- Decoding information obtained by being decoded by the decoding unit 303 The error is detected during decoding by the error checking unit 305 from the data input unit 340. Detect if it is born or not. If an error is detected, after processing corresponding to the error is performed in the decoding section 303, the position of the next synchronization signal detected by the synchronous detection section 304 is determined. Decryption work It is.
- the decoding unit 303 determines the type of the next synchronization signal, and if the error signal 335 is true in the case of the synchronization signal RM, the important information configuration unit 3006 to VOP header is used. Obtain the information of da 3 4 3.
- VOP Video Object Plan
- the important information forming unit 303 will use that VOP header. Output information. If there is no V ⁇ P header in the VOP currently being decoded, if the VEC header has important information inserted by the HEC in the VP header, it is output. .
- the important information obtained in the important information configuration section 303 is used.
- the important information obtained by the important information constructing section 303 includes a VOP header in the VOP (video 'object. Plane) currently being decoded by the decoding section 303. If so, the information is output, and if the VOP currently being decoded does not have a VOP header, the HEC inserts important information into the VP header. If so, output it.
- the important information in arbitrary shape image coding is also included in arbitrary shape image coding.
- the data with the normal image encoding is used for the part with a healthy header. Even if the data is obtained by encoding an image of an arbitrary shape, the image can be decoded from the data.
- the problem of out-of-sync of the video packet VP is solved. That is, the video '' The bucket VP starts with the synchronization signal RM. This is a kit, and it is possible to resynchronize with this synchronization signal RM even if an error has occurred earlier and an out-of-synchronization has occurred.
- the important information in arbitrary shape image coding is also provided as header information in arbitrary shape image coding.
- the decoding section 303 By transmitting the signal, it is a technology that provides resistance to noise during transmission.
- this important information is extracted and decoded by the decoding section 303. It is important that the decoding process be able to use it for decoding.
- the characteristic point of the present embodiment lies in the important information configuration section 306. Therefore, the important information configuration section 300 will be described in detail with reference to FIG.
- the important information composing section 303 is a normal image-related important information composing section 300, an arbitrary shape coding judging section 310, a switching section 310, 311 and an arbitrary shape. It is composed of an image-related important information configuration section 310.
- the normal image-related important information forming unit 3007 encodes the encoding module in the information of the VP header. It is configured to decode and output code information, time 'reference, etc.
- Arbitrary shape encoding determination section 3 08, decoding section 3 0 3 This is a part that determines whether the image being processed is an arbitrary-shaped image or a conventional rectangular image, and the switching unit 310 according to the result of the determination. , 311 are switched and controlled.
- the switching section 309311 1 is a two-part system switching switch.
- the arbitrarily-shaped image-related important information forming unit 310 is a unit that decodes important information (for example, image size, image position, etc.) regarding the arbitrarily-shaped image, and a switching unit for an arbitrarily-shaped image. 309 and 311 are switched so as to be connected to the arbitrarily-shaped image-related important information configuration section 310, and the important information about the arbitrarily-shaped image is reconfigured.
- the important information related to the normal image by the normal image related important information forming unit 3007 the important information related to the arbitrary shape image is also given to the decoding unit 303 to perform decoding. And decoding of an arbitrary-shaped image in the decoding unit 303 is also possible.
- the related important information forming section 307 decodes the coding mode information, the time reference, and the like.
- the arbitrary shape encoding determination unit 300 determines whether the image currently decoded by the decoding unit 303 is an arbitrary shape image or a conventional rectangular image. Then, a control signal corresponding to the result of the determination is generated.
- the switching units 309 and 311 are controlled by the control signal from the arbitrary shape encoding determination unit 3108.
- the arbitrary shape image related important information configuration unit 310 restores important information (for example, image size, image position, etc.) about the arbitrary shape image.
- final important information 343 is created and given to the decoding unit 303 as an output of the important information forming unit 306.
- the decoding side can extract the information.
- the important information necessary for decoding the arbitrary shape image can be given to the decoding unit 303.
- the size of video, object, and plan VOPs is MPEG-4, in which the power S expressed in 13 bits and the case in which all 13 bits are not used are used. There are many. Therefore, a method of reducing the code amount by making the size representation variable is considered.
- the basic policy here is expressed as a set of "codeword length" + "value”.
- a header that indicates the code length And the data part following it. That is, the header “header 1" and the header “header 2” have the power, the former adopts a 1-bit configuration, and the latter adopts a 3-bit configuration.
- the value 1 is used in the range from the input value to the value 5 4 2, the value “1” and the value “2” have a code word length of 5 bits, and the value “3” to the value “6”
- the codeword length shall be 6 bits, and the codeword length shall be 7 bits up to the value "7" to the value "14". Up to the value 15 "power value” 30 ", the codeword length has an 8-bit configuration.
- the codeword length has a 9-bit configuration.
- the codeword length is composed of 10 bits.
- the code word length is composed of 11 bits up to the value "159” and the value "286”.
- the code is up to the value "287” and the value up to the value "542”.
- the word length is 12 bits.
- the header "header 1” and the header “header 2” have a 1-bit configuration and the latter has a 2-bit configuration.
- the codeword length is composed of 12 bits, and the value "1055" is the value of the value "20778".
- the codeword length has a 13-bit configuration
- the codeword length has a 14-bit configuration up to the value "2029" and the output value "4126". 4 1 2 7
- the code word length up to the value "8222 2" shall be composed of 15 bits.
- the word length is fixed at 13 bits, but is variable from 5 bits to 15 bits depending on the numerical value.
- a maximum of 18 bits is required even if the header is included, and the number of constituent bits is 34 bits compared to the conventional 52 bits. Less is needed.
- VW and VH are the maximum.
- FIG. 9 shows a basic configuration diagram of this modified example.
- 1001 is a variable length coding unit
- 1002 is a variable length code generation unit
- the variable length code generation unit 1002 receives size information. Then, this is converted into a code word.
- the variable length coding unit 1001 reads out size information from the input important information 1031, and The size information 1032 is sent to the variable-length code generation unit 1002, and the codeword 1103 obtained from the variable-length code generation unit 1002 is encoded. Output as word 103 4.
- variable-length coding unit 1031 when the important information 1031 is input, the important information 1031 is input to the variable-length coding unit 1001.
- the variable length coding unit 1001 reads out the size information from the input important information 1031, and converts the size information 10032 into a variable length code generation unit 1.
- the variable-length coding unit 1001 sends the codeword to the dataword 102 and generates the codeword 103. In this case, the code word 10334 obtained by converting the size information is output.
- the present embodiment describes MPEG-4, the same information is added to the transmission of any shape encoding other than MPEG-4, thereby improving error resilience. Is possible.
- FIG. 10 is a basic configuration diagram of a video encoding device according to the second embodiment of the present invention.
- the output of the coding unit 601 is connected to the bit sequence division unit 602 and the important information configuration unit 603.
- the output of the important information configuration section 603 is connected to the socket header generation section 604.
- the output of the bit string division unit 602 and the packet header generation unit is connected to the packet configuration unit 605. No ,.
- the output of the packet forming section 605 is connected to the transmission path 106.
- the encoding unit 601 encodes the input image signal 1331 and outputs the encoded image signal 131 to the bit-sequence division unit 602. It is configured to output the encoded information 634 to the important information component 102.
- the important information forming unit 102 receives the encoded information 634 when the encoding is performed by the encoding unit 101, selects only the important information necessary for decoding, and outputs it.
- the information necessary for encoding and decoding of arbitrary shapes in MPEG-4 for example, the image size of arbitrary shape image encoding Information of the width VW information, the height VH, and the X coordinate VHMSR information of the image position for indicating the position at which the decoded image is displayed, the y coordinate VVMSR information, and the sign of the shape information VOP system that indicates the conversion mode: — Converts the coding type “vop—shape—codng—type (VSCT)” and the size of the shape information to A flag that indicates whether or not to encode the image.
- Important information such as change—conv—ratio—disable (CCRD) is acquired as important information 635 such as change-conv-ratio-disable (CCRD).
- the important information 635 is given to the bucket header generating section 604, and the normal image-related important information is normally reflected on the packet header.
- CCRD change-conv-ratio-disable
- the important information 635 is given to the bucket header generating section 604, and the normal image-related important information is normally reflected on the packet header.
- a book with the specified format is reflected in the extension header newly installed in the bucket header.
- the packet header generating section 604 outputs the important information 635. It is incorporated in the packet header and output as the packet header 636 to the bucket constituting section 605.
- the bit frame IJ dividing section 602 is The bit system 632 output from the encoding unit 61 is output. Ke It is configured to divide the data into output sizes.
- the bucket configuration section 605 is composed of a bit string division section 633 output from the bit row division section 602 and a header header generation section 604
- the header header 636 output from the power source is multiplexed, and the obtained multiplexed data 637 is output to the transmission line / storage medium 106. It is done.
- the input image signal 13 1 of the moving image is encoded by the encoding unit 60 1.
- the encoded information 634 at the time of encoding is output from the encoding unit 601, and is input to the important information forming unit 603.
- the important information constructing unit 603 selects only important information 635 necessary for decoding from the inputted encoded information 634 and outputs it.
- the important information 635 is incorporated in the bucket header in the header header generating section 604, and is output as the socket header 636. It is done.
- the bit string dividing section 602 divides the bit system 632 output from the encoding section 601 into a socket size and outputs it.
- the output header headers 636 are multiplexed, and the multiplexed data 637 is output to the transmission line / storage medium 106.
- the important information 635 output from the important information forming unit 6002 is determined in the bit sequence obtained by encoding the moving image. No, in the format we got.
- the header is generated by the packet header generation unit 604, added to the encoded data of the moving image, packetized, and transmitted. It is what you do.
- the header has an extension header, which is usually used to store and send important information other than image-related important information. Is the part that is
- information necessary for encoding and decoding of an arbitrary shape in MPEG-4 for example, image encoding of an arbitrary shape can be used.
- image encoding of an arbitrary shape Is the information on the X-coordinate VHMSR of the image position, the information on the y-coordinate VVMSR, and V ⁇ P 'shape' coding type that indicates the coding mode of the shape information
- VSCT vop-shape-coding-type
- CCRD change-conv-ratio-disable
- the decoding unit is configured to perform the decoding process by using the information extracted from the extended header of this packet, the decoding unit is optional for each packet. Shape images can be reproduced, and even in the case of arbitrary shape image coding, the same error resistance as that of conventional rectangular image coding can be provided. Therefore, even if some VPs in the VOP header are broken, the video can be decoded.
- the important information configuration section 60 which is an important configuration of the invention, will be described in detail with reference to FIG.
- FIG. 11 shows a block diagram of the important information component 603.
- the important information configuration section 603 is an important point in this embodiment, and as shown in FIG. 11, the important information configuration section 603 is comprised of a switching section 221 and an extended section. It is composed of a header insertion determining section 222 and an arbitrary shape image-related important information forming section 222.
- the extended header insertion determination section 222 is a section for determining the mode of adding the extended header to the header, and includes a coding section 6. 0 1 Encoding information input from 6 3 4 Encoding section 6 0 1 Judging whether or not encoding unit 6 1 is performing image encoding of an arbitrary shape, determining whether or not encoding When image coding is performed, the extension header is applied to the packet header [1].
- the switching section 222 is a section opening / closing switch, and the extension header insertion determination section 2202 controls the extension header. When it is determined that the calorie is attached to the header, the switching section 222 is determined by the control signal output from the extended header insertion determining section 222. The section is closed, and the encoded information 634 from the encoding section 601 is given to the arbitrary shape image related important information forming section 222.
- the arbitrarily-shaped image-related important information forming section 2203 receives the encoded information 634 input through the switching section 2201 as input encoded information 2223, and Thus, VOP header information related to arbitrary shape coding is selected and output as important information 635.
- an important information structure is transmitted from the encoding unit 61.
- the encoded information 634 input to the component section 603 adds the extended header to the socket header by the extended header insertion judgment section 222. Make a judgment on what the power is. If it is determined that the information is to be added, the input coded information 223 is input from the switching unit 221 to the arbitrarily-shaped image-related important information forming unit 223.
- the arbitrarily-shaped image-related important information configuration section 2203 selects VOP header information related to arbitrarily-shaped encoding from the input encoding information 223, and outputs important information.
- the width (VW), height (VH), and X coordinate of the image are compared to the encoding of a rectangular image.
- VHMSR Y-coordinate
- VVMSR Y-coordinate
- CCRD encoding mode for shape information
- VCA flag
- VAV value
- VRT flag
- Figure 12 shows the format of the bucket header extension at that time.
- the numbers above represent the number of bits, and one horizontal row represents 32 bits.
- VW, VH, VHMSR, and VVMSR are represented by 13 bits each, and the remaining CCED, VSC T is one bit each.
- the bit (RV) of the reserve "Reserve” is inserted at the end in order to align to 32 bits. If there is a possibility that the same bit sequence as a synchronizing signal may appear due to the continuation of VW, VH, etc., for example, as shown in Fig. 13 Insert a marker (M) between the values to ensure that no other signal, such as a synchronization signal, can be output, or that it does not match the bit sequence.
- the position of the marker M does not need to be between each piece of information, and may be embedded anywhere if the same rules are applied on the transmitting side and the receiving side. I don't know.
- the extended header is embedded in the packet header for embedding normal image-related important information.
- the important information related to the arbitrary shape image is embedded in the extension header and the packet header and the Then, the data is attached to the calories. I'm trying to make a kid. Therefore, an image of an arbitrary shape can be reproduced for each packet, and even in the case of encoding of an arbitrary shape image, an error similar to the encoding of a conventional rectangular image is obtained.
- the VOP header and some VPs Even if the video is broken, video decoding can be performed.
- the output of the demultiplexing unit 702 that receives the coded bitstream is output from the decoding unit 703 and the important information structure. Connected to section 705.
- the output of the decoding section 703 is connected to an important information configuration section 705 via an error checking section 704.
- the output of the important information configuration unit 705 is connected to the decoding unit 703.
- the separation unit 702 separates the bit system IJ 731, which is input from the transmission path Z storage medium 106, into a bucket for image bits, and forms a bucket with the system IJ 732. It is intended to be separated into the header 735 and other data.
- the decoding section 703 decodes the separated image bits system ij 732 by using the important information from the important information forming section 705, and This is a section that obtains image data, and the error checking section 744 performs decoding during decoding from the decoding information 733 obtained by the decoding section 703. This section is used to check if a laser that has generated a laser is a serious one.
- the important information forming unit 705 is one of the separated data processed by the separating unit 720. It is configured so that important information is configured from the information card of the header 735 and supplied to the decoding unit 703.
- a bit system ij 73 1 input from the transmission line / storage medium 106 is input into the image bit by the separation unit 70 2.
- System IJ 732 and the socket header 735, and other It is separated into data.
- the other data is sent to the corresponding decoding units.
- the separated image bit system 732 is input to the decoding unit 703, where the decoding is performed.
- the decryption process in the decoding unit 703 is performed using the important information from the important information configuration unit 705 for the separated image bit system U732. U.
- the error checking section 704 outputs the decoding information from the decoding section 703 to the output section 733 when an error occurs during decoding from the output. To check . As a result of the check, if it is determined that there is an error, the important information forming part 705 forms the important information 736 existing in the bucket header 735. Then, the decoding section 703 starts decoding the coded bit sequence using the important information 736.
- an extended header can be added to the bucket header in which important information related to the normal image is embedded.
- a bucket header in which the arbitrarily-shaped image-related important information is embedded in the extension header is applied to the data. . Since the moving image is packetized for this purpose, important information related to the arbitrary shape image can be acquired from the extended header, and the arbitrary shape image can be decoded.
- the important information configuration part 705 which is an important element in the present embodiment, will be described in detail with reference to FIG.
- the important information configuration section 705 includes a switching section 2301, an extended header insertion determination section 2302, and an arbitrary shape image related important information decoding section 23. It is composed of 0 3.
- the extension header insertion judgment unit 2302 has an extension header. KET This section is used to determine the type of power that is applied to the header D.
- the separation header 70 3 In the case where the information bit No. 5 is used to determine whether or not the image bit sequence 732 performs image coding of an arbitrary shape, and performs image coding of an arbitrary shape. In addition, it is configured to determine that the extended header is applied to the socket header [1], and to output a control signal corresponding to the determination.
- the switching section 2301 is a section opening / closing switch, and the extension header insertion judging section 2302 attaches the extension header to the / header.
- the switching section 2301 is closed by a control signal output from the extension header insertion determining section 2302.
- Separating part 702 The information of the header 735 is supplied to the arbitrary shape image-related important information decoding section 2303.
- the arbitrary shape image-related important information decoding unit 2303 uses the information of the socket header 735 input via the switching unit 2301 as input information 233 3 Upon receiving the information, the information relating to the arbitrary shape encoding is restored, and the information is output as important information 636.
- the extended header 735 is applied to the extended header in the packet header information.
- the packet header is determined by decoding the packet header information.
- the extension header insertion determination unit 2302 controls the switching unit 2301 to close. More, no ,. After passing through the header 735, this is used as the header information 233 3 for important information related to the arbitrary shape image. Input to the information decoding unit 2303.
- the arbitrarily-shaped image-related important information decoding section 2303 decodes important information on encoding of the arbitrarily-shaped image based on the packet header information 233, and converts the important information into important information. 36 and output to the decoding unit 703.
- the important information related to the arbitrary shape image is extracted from the information in the extended header that is set so that the important information related to the arbitrary shape image can be embedded. It will be able to decrypt.
- the error tolerance is the same as that of the conventional rectangular image. It is possible to have Furthermore, by using the extension header of the transmission path protocol, it is possible to implement the image encoding without changing the bit sequence. Wear . This is effective when using existing standard methods.
- the code amount can be reduced by performing variable-length coding on VW, VH, VHMSRVVMSR.
- the present embodiment describes MPEG-4, the same information is added to the transmission of image coding of any shape other than MPEG-4, so that erroneous information is added. Resistance can be improved.
- a moving image signal input from a camera (not shown) provided to the PC 3001 is encoded by an encoding device incorporated in the PC 3001. (Or coding software) performs video coding.
- the video signal output from this encoding device is transmitted wirelessly by the wireless device 303 along with other audio and data information, and the other wireless device 300 4 to be received.
- a mobile phone, PHS, wireless LAN device, etc. may be used for this radio.
- the signal received by the wireless device 304 is decomposed into a moving image signal and voice and data information.
- the moving image signal is transmitted by a decryption device (or decryption software) incorporated in the notebook computer 3005. It is decrypted and displayed on the display of the Note PC 3005.
- a moving image signal input from a camera (not shown) provided on the note PC 3005 is connected to the note / computer 3
- Decoding is performed in the same manner as described above using an encoding device (or encoding software) incorporated in the 005.
- the generated video signal is multiplexed with other audio and data information, transmitted wirelessly by the wireless device 304, and received by the wireless device 303. It is done.
- the signal received by the wireless device 30 ⁇ 3 is decomposed into a moving image signal and audio and data information. Of these, the moving image signal is no.
- the data is decrypted by the decryption device (or decryption software) incorporated in the computer 3001, and the data of the computer 3001 is decrypted. Appears on the display.
- the encoding according to the present invention is applied to the moving image communication between the personal computer 3001 and the notebook computer 300 and the portable television telephone 3006. It is also possible to apply a Z decryption device. It is generated by an encoding device incorporated in the computer 3001 or the notebook computer 3005, and the radio 3003 or 3003 is generated. The moving image signal transmitted by wireless from the mobile phone is received by the wireless device incorporated in the portable videophone 300. The signal received by the radio is decomposed into a moving image signal and voice and data information. this Of these, the moving image signal is decoded by a decoding device (or decoding software) incorporated in the portable videophone 300, and The information is displayed on the display of the portable television phone 300.
- a decoding device or decoding software
- the moving image signal input from the camera 1007 incorporated in the portable videophone 300 is incorporated in the portable videophone 300.
- the coding device or coding software
- the generated moving image signal is multiplexed with other voice and data information, and is transmitted wirelessly by a wireless device incorporated in the portable television telephone 3006.
- Received by the device 3003 or 304 The signal received by the wireless device 3003 or 304 is decomposed into a moving image signal and voice and data information. Of these, the video signal is no.
- Depends on the decoding device (decryption software) built into the computer 3001 or the notebook computer. Are decoded and displayed on the display of the NORTH COMPONENT 301 or the NOTE NO.
- FIG. 26 shows an encoding device according to the fourth embodiment corresponding to the encoding device according to the first embodiment in FIG.
- the multiplexed bit sequence output from the multiplexing unit 105 is stored in the recording medium 107.
- This recording medium 107 is formatted according to the present invention. That is, the recording medium 107 stores a shape information header and a plurality of VOPs following the shape information header.
- the shape information header is a field that stores information that is commonly handled in the encoded data, and stores information higher than the V ⁇ P header. . For example, the image size of a rectangular image is stored.
- Each V ⁇ P contains multiple macroblocks, with the first macroblock containing the VOP header and the MB placed after this VOP header.
- the following block block consists of the VP header and the MB data following the VP header.
- the VP header is formatted according to Figure 4. Is performed.
- FIG. 27 shows a decoding apparatus according to the fourth embodiment corresponding to the decoding apparatus according to the first embodiment in FIG.
- This decoding device reads and decodes the multiplexed bit sequence stored in the recording medium 107 by the coding device according to the fourth embodiment.
- FIG. 28 shows a decoding device according to the fifth embodiment corresponding to the encoding device according to the second embodiment shown in FIG.
- This encoding device stores the multiplexed data output from the bucket configuration unit 605 in a recording medium 107 in accordance with the format of the present invention.
- the format includes a shape information header and multiple V VPs, and each of the multiple macroblocks of each VOP has a VP header force S It is.
- FIG. 29 shows a decoding device of the fifth embodiment corresponding to the decoding device of the second embodiment of FIG. This decoding device reads and decodes the multiplexed bit sequence stored in the recording medium 107 by the coding device according to the fifth embodiment.
- the image code sequence is sequentially read from the storage medium 107, and the synchronous code is detected first (step S11). If the detected synchronous code SVOP startcode is YES (YES in step S12), the VOP (frame) decoded immediately before is displayed in the image information. Perform processing to output to the output device (step S13).
- the decoding of the VOP header (VOP header in FIG. 29) that follows the bow I in the VOP startcode in the image code string is performed (step S14). If the VOP header power S is correctly decoded (YES in step S15), the information recorded in the temporary storage circuit in the decoding device is used.
- Step S16 the macroblock data (MB data in Fig. 29) continuing from the bow to the V ⁇ P header is decoded, and the video packet is decoded again. (Step S17).
- Step S 2 1 1 2). If the decision is SNO, jump to step 22. If the duplicated information can be decoded correctly (YES in step S22), the duplicated information and the information stored in the temporary storage circuit are stored. Are compared (step S23). If the comparison results are equal (NO in step S23), the macroblock data (Fig. 29) that follows the bow I in the video socket header The middle MB data) is decoded, and the video packet is decoded (step S17). If the comparison results are not equal (YES in step S23), this video-no. The packet contains the VO that was just restored. P is determined to belong to a different VOP, and processing for outputting the V V P decoded immediately before to the image information output device is performed (step S24). The information recorded in the temporary storage device is replaced with the decoded duplicated information (step S25). Further, the video packet is decoded (step S17).
- a code string obtained by encoding a voice signal or an audio signal, or a data control method is used instead of recording the image code string directly on the storage medium. Even if the code string multiplexed with the control information is recorded in the storage medium, it is good.
- the image encoding sequence and the audio / audio encoding are performed by the demultiplexing device. A process for demultiplexing the sequence, data, and control information is performed, and the demultiplexed image code sequence is decoded by the coding device 820.
- FIG. 29 shows an example in which information recorded in the storage medium 810 is transmitted to the decoding device 820 via the signal line 80.
- the information may be transmitted via a transmission path such as a wired Z wireless / infrared ray other than the signal line.
- the code string recorded on the storage medium is recorded with duplicated important information
- the code string is stored on the storage medium. Error occurs in the information recorded in the recorded information, or when an error occurs in the signal line or transmission line that sends the information recorded in the stored information to the playback image. Plays back images with little deterioration P
- N Integrated services Digital Network Applicable to information transmission systems that transmit data using a wired communication network such as the Internet, or a wireless communication network such as PHS or satellite communication it can .
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- Engineering & Computer Science (AREA)
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- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR0009262-2A BR0009262A (pt) | 1999-03-05 | 2000-03-06 | Aparelho de codificação de vìdeo e aparelho de decodificação de vìdeo |
EP00906734A EP1158811A4 (en) | 1999-03-05 | 2000-03-06 | METHOD AND ARRANGEMENT FOR CODING MOVING IMAGES |
CA002367055A CA2367055C (en) | 1999-03-05 | 2000-03-06 | Video coding and decoding apparatus with error correction for handling arbitrary shaped blocks |
US09/914,787 US7027517B1 (en) | 1999-03-05 | 2000-03-06 | Method and apparatus for coding moving picture image |
AU28305/00A AU758372B2 (en) | 1999-03-05 | 2000-03-06 | Method and apparatus for coding moving picture image |
MXPA01008928A MXPA01008928A (es) | 1999-03-05 | 2000-03-06 | Aparato codificador de video y aparato decodificador de video. |
NO20014284A NO20014284L (no) | 1999-03-05 | 2001-09-04 | Apparat for koding og dekoding av videosignaler |
US09/950,663 US7124429B2 (en) | 1999-03-05 | 2001-09-13 | Video coding apparatus and video decoding apparatus |
US11/218,526 US20060008012A1 (en) | 1999-03-05 | 2005-09-06 | Video coding apparatus and video decoding apparatus |
US11/354,963 US20060140281A1 (en) | 1999-03-05 | 2006-02-16 | Video coding apparatus and video decoding apparatus |
Applications Claiming Priority (2)
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JP11/58590 | 1999-03-05 | ||
JP5859099 | 1999-03-05 |
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US09/950,663 Continuation-In-Part US7124429B2 (en) | 1999-03-05 | 2001-09-13 | Video coding apparatus and video decoding apparatus |
US11/218,526 Division US20060008012A1 (en) | 1999-03-05 | 2005-09-06 | Video coding apparatus and video decoding apparatus |
US11/354,963 Division US20060140281A1 (en) | 1999-03-05 | 2006-02-16 | Video coding apparatus and video decoding apparatus |
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WO2000054512A1 true WO2000054512A1 (en) | 2000-09-14 |
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Family Applications (1)
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PCT/JP2000/001354 WO2000054512A1 (en) | 1999-03-05 | 2000-03-06 | Method and apparatus for coding moving picture image |
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US (3) | US7027517B1 (ja) |
EP (1) | EP1158811A4 (ja) |
KR (1) | KR100483814B1 (ja) |
CN (1) | CN100407797C (ja) |
AU (1) | AU758372B2 (ja) |
BR (1) | BR0009262A (ja) |
CA (1) | CA2367055C (ja) |
MX (1) | MXPA01008928A (ja) |
NO (1) | NO20014284L (ja) |
WO (1) | WO2000054512A1 (ja) |
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US6499060B1 (en) | 1999-03-12 | 2002-12-24 | Microsoft Corporation | Media coding for loss recovery with remotely predicted data units |
KR20040046540A (ko) * | 2002-11-27 | 2004-06-05 | 엘지전자 주식회사 | 동영상 디코딩 방법 |
US8230094B1 (en) * | 2003-04-29 | 2012-07-24 | Aol Inc. | Media file format, system, and method |
KR100987777B1 (ko) * | 2004-02-05 | 2010-10-13 | 삼성전자주식회사 | 에러의 전파를 방지하고 병렬 처리가 가능한 디코딩 방법및 그 디코딩 장치 |
US20060062312A1 (en) * | 2004-09-22 | 2006-03-23 | Yen-Chi Lee | Video demultiplexer and decoder with efficient data recovery |
US7818614B2 (en) * | 2004-10-25 | 2010-10-19 | Hewlett-Packard Development Company, L.P. | System and method for reintroducing a processor module to an operating system after lockstep recovery |
US8634413B2 (en) * | 2004-12-30 | 2014-01-21 | Microsoft Corporation | Use of frame caching to improve packet loss recovery |
WO2007134406A1 (en) * | 2006-05-24 | 2007-11-29 | Cohda Wireless Pty Ltd | Method and apparatus for multicarrier communications |
US8379733B2 (en) * | 2006-09-26 | 2013-02-19 | Qualcomm Incorporated | Efficient video packetization methods for packet-switched video telephony applications |
US9357233B2 (en) * | 2008-02-26 | 2016-05-31 | Qualcomm Incorporated | Video decoder error handling |
JP5791451B2 (ja) * | 2011-09-29 | 2015-10-07 | キヤノン株式会社 | 符号化装置およびプログラム |
KR20140090999A (ko) * | 2011-10-14 | 2014-07-18 | 어드밴스드 마이크로 디바이시즈, 인코포레이티드 | 영역-기반 이미지 압축 |
FR3024582A1 (fr) * | 2014-07-29 | 2016-02-05 | Orange | Gestion de la perte de trame dans un contexte de transition fd/lpd |
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Also Published As
Publication number | Publication date |
---|---|
CA2367055A1 (en) | 2000-09-14 |
NO20014284D0 (no) | 2001-09-04 |
US20060140281A1 (en) | 2006-06-29 |
EP1158811A4 (en) | 2002-01-09 |
KR20010108318A (ko) | 2001-12-07 |
CN1346574A (zh) | 2002-04-24 |
BR0009262A (pt) | 2002-02-05 |
AU2830500A (en) | 2000-09-28 |
US20060008012A1 (en) | 2006-01-12 |
KR100483814B1 (ko) | 2005-04-20 |
US7027517B1 (en) | 2006-04-11 |
EP1158811A1 (en) | 2001-11-28 |
NO20014284L (no) | 2001-10-19 |
MXPA01008928A (es) | 2003-07-21 |
CN100407797C (zh) | 2008-07-30 |
CA2367055C (en) | 2004-09-14 |
AU758372B2 (en) | 2003-03-20 |
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