JP2003264831A - Moving picture encoding/decoding system and method, encoder, decoder, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To conceal an error or missing of encoded data so as not to be conspicuous even on the occurrence of the error or missing in transmission/reception of moving picture data. <P>SOLUTION: A transmitter side converts an image comprising a plurality of image areas by applying interlace scanning to each frame of a moving picture before encoding the moving picture and transmits the converted image to a network. An encoded data correction means 302 replaces the encoded data received by a reception means 301 in a receiver side moving picture decoding section 102 with encoded data estimated from encoded data corresponding to other image area on the occurrence of an error or missing in part of the encoded data in one image area in a plurality of the image areas. An interleave conversion means 304 converts the image comprising a plurality of the images areas after decoding the encoded data obtained by the encoded data correction means 302 at a decoding means 303 into an image comprising a single image area through inverse processing to the interlace scanning. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving picture coding / decoding system for transmitting and receiving moving pictures through a network, and more particularly, a technique for concealing an error or loss of coded data that occurs during transmission and reception via a network. Regarding the improvement of.

[0002]

2. Description of the Related Art Generally, when transmitting a moving image through a network, the transmitting side compresses and encodes the moving image by an MPEG encoding method or the like, divides this encoded data stream into packets, etc., and transmits it to the network. On the receiving side, a stream of encoded data is reproduced from the received packet and the like, and this is decoded to generate a moving image. Therefore, if the packet or the like cannot be transmitted due to network congestion or the like, or the packet or the like cannot be correctly received due to a transmission error, the quality of the moving image reproduced on the receiving side is deteriorated.

Regarding an error and a loss of encoded data in moving image communication on such a network, an example of a conventional concealment technique is described in "All About MPEG-4" (Industry Research Society), page 109, edited by Shinichi Miki. It is described on page 111. As shown in FIG. 11, in this conventional concealment technique, the simplest method is the frame 1102 transmitted immediately before the frame 1101 in which an error or loss of encoded data occurs.
In the above, the encoded data 1104 in the same area as the data 1103 in which an error or omission has occurred is substituted. Another method, called data partitioning, collects important data in the front part of the packet when the encoded data is packetized and transmitted, and encodes only the important data even if an error occurs. It is possible to decode a moving image from encrypted data.

[0004]

However, the above-mentioned conventional technique has a problem that data error or omission becomes conspicuous in a moving image in which the motion of a subject is large. The reason is that in the case of such a moving image, even if the positions of the frames that make up the moving image are the same, the image data varies greatly. This is because the decoding by only the difference from other areas where there is no error or loss of data is large and the concealment effect is insufficient.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a moving picture coding / decoding system capable of concealing an error or a loss of coded data so as not to be conspicuous when transmitting and receiving moving picture data. It is in.

[0006]

A moving picture coding / decoding system according to the present invention comprises an interlace converting means in a moving picture coding unit for coding a moving picture and transmitting it to a network. The interlace conversion means converts each frame of a moving image into an image composed of a plurality of image areas by interlaced scanning before encoding.

Further, the moving picture coding / decoding system according to the present invention comprises a data correcting means and an interleave converting means in a moving picture decoding section for receiving and decoding the transmitted moving picture data. When a defective portion due to an error or a part of the encoded data is generated in an image area of the plurality of image areas, the data correcting means sets the defective portion to a corresponding portion of another image area of the same frame. Correct with normal data. The interleave conversion means converts the plurality of image areas corrected by the data correction means into an image composed of a single image area by a process reverse to the interlaced scanning.

The correction of the data by the data correction means can be carried out before the decoding or after the decoding. In the configuration to be performed before decoding, if an error or loss occurs in a part of the encoded data in a certain image area of the plurality of image areas, the encoded data is stored in another image area of the same frame. Coded data correction means for replacing the coded data estimated from the corresponding coded data is provided. Further, in the configuration to be performed after decoding, the portion corresponding to the coded data in which an error or a loss has occurred when the received coded data is decoded to generate an image composed of the plurality of image areas is modified. Decoding means for embedding arbitrary image data in the target area and image data of the correction target area in the image data decoded by the decoding means from image data of corresponding areas of other image areas of the same frame. Image data correcting means for replacing the estimated image data is provided.

[0009]

According to the present invention, the entire image of one frame is divided into a plurality of image areas having a high degree of similarity by interlace conversion, encoded, and transmitted, so that there is no error or loss of encoded data during communication. Even if it occurs, by substituting the coded data or the image data that is estimated from the corresponding coded data or the image data in the image area where there is no error or omission in the same frame, it is possible to conceal the error or omission. Has the effect.

[0010]

First Embodiment Next, a first embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, a moving picture coding / decoding system as a first embodiment of the present invention comprises a moving picture coding unit 101 and a moving picture decoding unit communicably connected by a network 103. It is composed of a part 102 and a part. The moving image coding unit 101 codes the input moving image and transmits it to the network 103, and the moving image decoding unit 102 decodes the data received from the network 103 and outputs the moving image.

Referring to FIG. 2, the moving picture coding unit 101.
Is composed of interlace conversion means 201, encoding means 202 and transmission means 203.

The interlace conversion means 201 converts each frame of the input moving image into an image composed of a plurality of image areas by interlaced scanning. The encoding means 202 performs encoding processing on the moving image data output from the interlace conversion means 201, and supplies the generated encoded data stream to the transmission means 203. The transmitting means 203 divides the encoded data stream output from the encoding means 202 into packets of a size suitable for the network 103,
A necessary header is added and transmitted to the network 103.

Referring to FIG. 3, the moving picture decoding unit 102.
Is composed of receiving means 301, encoded data correcting means 302, decoding means 303, and interleave conversion means 304.

The receiving means 301 receives a packet of encoded data from the network 103, and the encoded data correcting means 30
Supply to 2. The coded data correction unit 302 replaces the coded data with an alternative coded data when a part of the coded data has an error or a loss, and when not generated, generates a coded data stream using the data as it is. To do.
The decoding means 303 decodes the encoded data stream supplied from the encoded data correction means 302 and supplies the moving image to the interleave conversion means 304. The interleave conversion means 304 converts each frame of the moving picture output from the decoding means 303 into the interlace conversion means 201 of the moving picture coding unit 101.
The image is converted into an image composed of a single image area by the reverse processing of the interlaced scanning in and output.

The coding means 202 and the transmitting means 203 among the constituent elements of the moving picture coding section 101, and the receiving means 301 and the decoding means 303 among the constituent elements of the moving picture decoding section 102 are moving images of this kind. It is means well known to those skilled in the art in the field of image encoding / decoding, and the main characteristic parts of the present embodiment are interlace conversion means 201, encoded data correction means 302, and interleave conversion means 304. is there. Therefore, these means will be described below.

First, the interlace converting means 201 of FIG. 2 will be described with reference to FIGS. 4 and 5.

In FIG. 4, it is assumed that data for one frame of the input moving image is given to the input buffer 401. Here, one frame consists of N lines. First, a copy source line is selected by interlaced scanning starting from the first line and skipping n lines, and copying is performed in order from the first line of the output buffer 402. Here, n represents an integer of 1 or more. After that, when the copying of the data for one frame is completed in the same manner, the output buffer 402 displays (n +) as shown in FIG.
1) The image 501 is composed of one image area. When the copying is completed, the interlaced converted image 501 is supplied to the encoding means 202.

Next, the operation of the encoded data correction means 302 of FIG. 3 will be described with reference to FIG.

If no error or loss is detected in the encoded data, unnecessary information such as the header of the transmission protocol may be deleted, reassembled into a stream, and supplied to the decoding means 303. Only the operation when an error or omission is detected is shown. The correction is performed on the encoded data, but for convenience of explanation, the explanation will be given using the decoded image image.

In FIG. 6, first, the image area 602 to which the data 601 in which an error or omission has occurred belongs is specified. next,
Using the encoded data 603 and 604 at corresponding positions in the image area other than the image area 602, an estimated value of the encoded data 601 in which an error or omission is detected is generated and replaced.
For example, as shown in FIG. 6, when there are a plurality of image areas other than the image area 602, a plurality of encoded data at corresponding positions
One piece of encoded data in which no error or omission has occurred is selected from 603 and 604, and the selected encoded data is used as a substitute for the encoded data 601. Of course, the estimation may be performed using a plurality of encoded data 603 and 604 in which no error or omission has occurred. Then, unnecessary information such as the header of the transmission protocol is deleted from the replaced encoded data, reassembled into a stream, and supplied to the decoding means 303.

Next, the operation of the interleave conversion means 304 of FIG. 3 will be described with reference to FIG.

In FIG. 7, data for one frame of a moving image output from the decoding means 303 is input buffer 701.
Given to. First, each line is sequentially copied from the first image area to the first, (n + 2) th, (2n + 3) th, ... Of the output buffer 702. Next, each line is sequentially copied from the second image area to the second, (n + 3) th, (2n + 4) th, ... Of the output buffer 702. Similarly, the interleave conversion from a plurality of image areas to a single image is performed, and the image obtained on the output buffer 701 is output.

As described above, in the present embodiment, a plurality of image areas having a high degree of similarity are generated by interlace conversion, so that even if an error or loss occurs in the data in a certain image area, the data concerned is lost. Since the alternative data is generated and replaced from the data in the other image area as an alternative to the above, the concealment processing in which the occurrence of errors or omissions is less noticeable can be performed.

In the present embodiment, the interlace conversion regarding the horizontal lines of the image has been described in mind, but the same effect can be obtained by performing the interlace conversion regarding the vertical lines. Also, by combining the horizontal interlace conversion and the vertical interlace conversion,
Obviously, the object of the invention can be achieved.

[0026]

EXAMPLE An example of the first embodiment of the present invention will now be described in detail with reference to the drawings.

Referring to FIG. 8, the moving picture coding / decoding system according to the present embodiment is composed of a moving picture coding unit 800 and a moving picture decoding unit 810, both of which are 100BASE-TX local areas. Connected by network 830.

The moving picture coding unit 800 includes a general-purpose personal computer 801, a video camera 802 that outputs an NTSC signal, a video capture card 803 that captures an output signal of the video camera into the general-purpose personal computer 801, a 100BASE-TX network card. It is composed of 804.

Each means of the moving picture coding unit 101 described in the first embodiment of the present invention is realized as software operating on the general-purpose personal computer 801 in this embodiment. That is, a moving image encoding program is recorded on a computer-readable recording medium such as a magnetic disk device of a general-purpose personal computer, and the program is read by the computer and its operation is controlled so that the program can be displayed on the computer. The respective means 201, 202, 203 shown in 2 are realized. Therefore, here, FIG.
With reference to, the processing contents of each means in this embodiment will be described in detail.

First, the format of a moving image captured by the video camera 802 and captured by the video capture card 803 has a resolution of 320 dots in the horizontal direction and 240 dots in the vertical direction, and the pixel value of each pixel is represented by 8 bits of RGB each. Be present. Further, the pixel values are arranged in the horizontal direction of the screen in the order of RGB from the upper left corner of the image, and the last pixel value of one screen represents the pixel at the lower right corner.

In the interlace conversion means 201, an image of the above format is displayed in a horizontal 32
Screen area A with 0 dots and 120 dots vertically, and screen area B with 320 dots horizontally and 120 dots vertically, which consists of even-numbered lines only
It is converted into an image of horizontal 320 dots and vertical 240 dots consisting of two screen areas. Here, the screen area A is the upper half of the image,
The screen area B occupies the lower half of the image.

The encoding means 202 encodes the image sequence converted by the interlace conversion means 201 in accordance with the standard of the MPEG-4 visual simple profile. For the simple profile of MPEG-4 standard, refer to “ISO 14496-2 I
nformation Technology-Coding of Audio-Visual Obj
ects-Part 2: Visual First Edition ”, which is well known to those skilled in the art, and thus detailed description thereof will be omitted.

The transmitting means 203 divides the MPEG-4 simple profile elementary stream into packets according to the RTP payload format, and transmits the packets according to the RTP protocol. For the RTP payload format, see RFC 3016 “RTP Payload Format for IETF”.
MPEG-4 Audio / Visual Streams ”, RTP protocol is RFC1889“ RTP: A Transport Proto ”issued by IETF.
col for Real-Time Applications ”,
Details are omitted because the content is known to those skilled in the art. The packet is transmitted to the local area network 830 via the 100BASE-TX network card 804.

In FIG. 8, a moving picture decoding unit 810 is a general-purpose personal computer 811 or 100 as hardware.
Consists of a BASE-TX network card 812. The moving image of the final result of the processing is a general-purpose personal computer 811.
Displayed on the screen.

Each means of the moving picture decoding unit 102 described in the first embodiment of the present invention is realized as software operating on the general-purpose personal computer 811 in this embodiment. That is, a moving image decoding program is recorded on a computer-readable recording medium such as a magnetic disk device of a general-purpose personal computer, and the program is read by the computer and its operation is controlled to display on the computer. The respective means 301, 302, 303, 304 shown in 3 are realized. Therefore, here, with reference to FIG. 3, the processing content of each means in the present embodiment will be described in detail.

The receiving means 301 waits for the arrival of a packet from the local area network 830, and checks the RTP of the packet.
When the packet for one screen arrives with reference to the time stamp included in the header, the encoded data correction means 30
Send to 2.

The coded data correction means 302 checks whether the received packet for one screen has an error or missing.
If there is no error or omission as a result of inspection, RTP from each packet
The header is removed and an elementary stream for one screen is generated and sent to the decoding means 303. When there is an error or omission, it is first determined which of the image areas A and B the macroblock included in the corresponding packet is included in, and a substitute packet of the corresponding packet is generated. If the macroblock is included in the image area A, the image area B
The encoded data of the corresponding macroblock of is copied from the packet including them to be the alternative packet. Even when it is included in the image area B, a substitute packet is similarly generated from the encoded data of the corresponding macroblock in the image area A. However, if the corresponding packet in the image area B or the image area A that is the source of the alternative packet also has an error or missing, such processing is not performed.

After generating the alternative packet, RT from each packet
The P header is removed to generate an elementary stream for one screen, and the elementary stream is sent to the decoding means 303. In addition, MPEG-
In the 4 visual simple profile, there are two types of data for one screen: intra-coded data that is coded from only the data within one screen and inter-coded data that is coded from the data of multiple screens. Also in this case, the encoded data is in macroblock units,
The coded data correction process can be performed similarly.

The decoding means 303 decodes the elementary stream of the MPEG-4 standard simple profile sent from the encoded data correction means 302, and the resolution is 320 horizontal.
With 240 dots vertically, the pixel value of each pixel is output as an image string in the RGB 8-bit format. For details of the decryption process, refer to "ISO 14496-2 Information Te
chnology-Coding of Audio-Visual Objects-Part
2: Since it is a well-known technology in "Visual First Edition", it is omitted.

In the interleave conversion means 304, the horizontal 320 dots / vertical 240 dots, which are the screen area A of 320 dots wide / 120 vertical dots and the screen area B of 320 dots wide / 120 vertical dots, sent from the decoding means 303. From the above image, in the reverse procedure of the process of the interlace conversion means 201, an image of horizontal 320 dots / vertical 240 dots in which each line of the screen area A is arranged in an odd number and each line of the screen area B is arranged in an even number Generate and output.

[0041]

Second Embodiment of the Invention Next, a second embodiment of the present invention will be described. The moving picture coding / decoding system of the second embodiment differs from that of the first embodiment in that the moving picture decoding unit corrects the image after decoding the coded data. Other parts are the same as those in the first embodiment.

Referring to FIG. 9, the moving picture decoding unit 900 used in the present embodiment has a receiving means 901 and a decoding means 902.
And image data correction means 903 and interleave conversion means 904.

The receiving means 901 receives a packet of encoded data from the network and supplies it to the decoding means 902. The decoding means 902 decodes the encoded data supplied from the receiving means 901 to convert the moving image into image data correcting means 903.
Output to. Here, the decoding means 902 does not output significant image data to the area of the moving image (referred to as a correction target area) corresponding to the error or the omission in a part of the encoded data. Alternatively, appropriate data is embedded, and the correction location information designating the correction target area is output to the image data correction means 903. If the correction location information is output from the decoding means 902, the image data correction means 903 replaces the image data of the correction target area designated by the information with the alternative image data, and interleaves the entire image data. The conversion means 904 is supplied. Interleave conversion means 9
04 converts each frame of the moving image output from the image data correction unit 903 into an image composed of a single image area by the reverse processing of the interlaced scanning in the interlace conversion unit 201 of the moving image encoding unit 101. Output.

The receiving means 901 and the interleave conversion means 904 among the components of the moving picture decoding unit 900 are the same as the reception means 301 and the interleave conversion means 304 of FIG. 3 in the first embodiment. The decoding means 902 is the same as the decoding means 303 of FIG. 3 in the first embodiment, and when a part of the encoded data is erroneous or missing, the decoding target 902 is set as the correction target area of the moving image. This is to add a function of not outputting significant image data or embedding appropriate data, and a function of generating and outputting correction location information designating a correction target area. Image data correction means 903
Is configured as a means for performing the following processing.

FIG. 10 shows an image image output from the decoding means 902, and 1001 is a correction in which significant image data does not exist or appropriate data is embedded because the encoded data has an error or a loss. Indicates the target area. The image data correction means 903 recognizes the position of the correction target area 1001 and specifies the image area 1002 to which the correction target area 1001 belongs based on the correction location information separately output from the decoding means 902. Next, in the image area other than the image area 1002, the image data 100 at the position corresponding to the correction target area 1001.
3 and 1004 are used to generate and replace the estimated value of the correction target area 1001. For example, as shown in FIG.
When there are a plurality of image areas other than the above, one image data having no error or missing is selected from the plurality of image data 1003 and 1004 at the corresponding positions, and the selected image data is stored in the correction target area 1001. It is a substitute for image data. Of course, multiple image data 100 with no errors or omissions
The average value of 3, 1004 may be used as alternative data. And
The corrected image data is supplied to the interleave conversion means 904.

[0046]

EXAMPLES Next, examples of the second embodiment will be described. The following example is basically the same as the example of the first exemplary embodiment shown in FIG. 8, and a moving image decoding unit 810.
Is replaced by the moving picture decoding unit 900 of FIG. Therefore, the operation of the embodiment of the moving picture decoding unit 900 will be described below.

The receiving means 901 waits for the arrival of a packet from the local area network 830 and waits for the RTP of the packet.
The time stamp included in the header is referred to, and when a packet for one screen arrives, the packet is sent to the decoding means 902.

The decoding means 902 checks the received packet for one screen for errors or omissions. If there is no error or omission as a result of the inspection, the RTP header is removed from each packet and one screen of elementary stream (MPEG-4
By generating a standard simple profile elementary stream) and decoding it, the resolution is 320 dots horizontally and 240 dots vertically, and the pixel value of each pixel is 8 RGB each.
Output as an image string in bit format. On the other hand,
If the packet has an error or omission, the position on the image data of the macroblock included in the packet is specified as the correction target area, and correction location information indicating the correction target area is generated and output. Then, the RTP header is removed from each packet to generate an elementary stream for one screen, and this is decoded, and appropriate image data is embedded in the area to be corrected, so that the resolution is 320 pixels wide.
With 240 dots vertically, the pixel value of each pixel is output as an image string in the RGB 8-bit format.

In the image data correction means 903, the decoding means 9
Input the image of 320 dots horizontal and 240 dots vertical consisting of the screen area A of 320 horizontal dots and 120 vertical dots and the screen area B of 320 horizontal dots and 120 vertical dots sent from 02, and specified by the correction point information. The image data of the correction target area is corrected.
Specifically, when the correction target area is included in the image area A, the image data of the corresponding portion of the image area B is embedded in the correction target area as alternative data, and conversely, the correction target area is the image area B. , The image data of the corresponding part of the image area A is embedded in the correction target area as alternative data. However, such a process is not performed when the part used as the alternative data is also designated as the correction target region in the correction part information.

The interleave conversion means 904 is a horizontal 320 dot / vertical 240 area which is sent from the image data correction means 903 and which is composed of a horizontal 320 dot / vertical 120 dot screen area A and a horizontal 320 dot / vertical 120 dot screen area B. From the dot image, a reverse 320-dot horizontal-dot 240-dot vertical image in which each line of the screen area A is arranged in an odd number and each line of the screen area B is arranged in an even number by the reverse procedure of the process of the interlace conversion means. Generate,
Output.

[0051]

As described above, according to the present invention,
Even when a moving image in which the subject moves greatly is transmitted / received, an effect that the error or loss of the generated encoded data can be concealed in an unnoticeable manner is obtained. The reason is that an image composed of a plurality of highly similar image regions is generated from each frame of a moving image, and when an error or a loss occurs in the encoded data, the corresponding encoded data in another image region or This is for generating coded data having error or omission from image data or alternative data close to the image data.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a moving picture coding unit according to the first embodiment of the present invention.

FIG. 3 is a configuration diagram of a moving image decoding unit according to the first embodiment of the present invention.

[Fig. 4] Fig. 4 is a diagram explaining an operation of an interlace conversion means in the moving picture coding unit according to the first embodiment of the present invention.

[Fig. 5] Fig. 5 is a diagram explaining an operation of an interlace conversion means in the moving picture coding unit according to the first embodiment of the present invention.

[Fig. 6] Fig. 6 is a diagram for explaining the operation of the encoded data correction means in the moving picture decoding unit according to the first embodiment of the present invention.

FIG. 7 is a diagram illustrating an operation of an interleave conversion unit in the moving picture decoding unit according to the first embodiment of the present invention.

FIG. 8 is a configuration diagram of an example of the first exemplary embodiment of the present invention.

FIG. 9 is a configuration diagram of a moving image decoding unit according to the second embodiment of the present invention.

FIG. 10 is a diagram illustrating an operation of image data correction means in a moving image decoding unit according to the second embodiment of the present invention.

FIG. 11 is a diagram illustrating a conventional technique.

[Explanation of symbols]

101 Moving Image Encoding Unit 102 Moving Image Decoding Unit 103 Network 201 Interlace Converting Means 202 Encoding Means 203 Transmitting Means 301 Receiving Means 302 Receiving Means 302 Encoding Data Modifying Means 303 Decoding Means 304 Interleave Converting Means 401 Interlace Converting Means Buffer 402 Output buffer 501 in interlace conversion means Output result image 601 of interlace conversion means Coded data 602 with error or loss 602 Image areas 603, 604 with error or loss Error coded data with error or loss Corresponding data 701 in other image area Input buffer 702 in interleave conversion means Output buffer 800 in interleave conversion means Moving picture coding unit 801 General-purpose personal computer 802 Video camera 03 Video capture card 804 Network card 810 Moving picture decoding unit 811 General-purpose personal computer 812 Network card 830 Local area network 900 Moving picture decoding unit 901 Receiving means 902 Decoding means 903 Image data correcting means 904 Interleave converting means 1001 Error or omission Of the correction target area 1002 corresponding to the encoded data in which the error occurred or the image areas 1003 and 1004 in which the error or omission occurred Generated frame 1102 Frame 1103 immediately before the frame where the error occurred 1103 Place where the error occurred 1104 Corresponding place in the frame immediately before the place where the error occurred

Claims (12)

[Claims] 1. A moving picture coding / decoding apparatus having a moving picture coding section for coding a moving picture and transmitting it to a network, and a moving picture decoding section for receiving and decoding the transmitted moving picture data. In the system, the moving picture coding unit is provided with interlace conversion means for converting each frame of the moving picture into an image composed of a plurality of image areas by interlaced scanning, and the moving picture decoding unit is provided with one of the plurality of image areas. When a defective portion due to an error or loss of a part of the encoded data occurs in the image area, data correcting means for correcting the defective portion with normal data of a corresponding portion of another image area of the same frame; Interleaving conversion means for converting the plurality of image areas corrected by the correction means into an image composed of a single image area by the reverse processing of the interlaced scanning. And a video encoding / decoding system characterized by: 2. A moving image coding / decoding unit having a moving image coding unit for coding a moving image and transmitting it to a network, and a moving image decoding unit for receiving and decoding the transmitted moving image data. In the system, the moving picture coding unit is provided with interlace conversion means for converting each frame of the moving picture into an image composed of a plurality of image areas by interlaced scanning, and the moving picture decoding unit is provided with one of the plurality of image areas. When an error or loss occurs in a part of the coded data in the image area, the coded data correction means that replaces the coded data with the coded data estimated from the corresponding coded data in the other image area of the same frame, An image composed of a single image area by decoding the coded data obtained from the coded data correction means and performing the reverse processing of the interlaced scanning on the plurality of image areas. And a moving picture coding / decoding system, comprising: 3. A moving picture coding / decoding section having a moving picture coding section for coding a moving picture and transmitting it to a network, and a moving picture decoding section for receiving and decoding the transmitted moving picture data. In the system, the moving picture coding unit includes interlace conversion means for converting each frame of the moving picture into an image composed of a plurality of image areas by interlaced scanning,
A portion corresponding to the coded data in which an error or omission occurs when the coded data received from the video coding section is decoded in the video decoding section to generate an image composed of the plurality of image areas. Decoding means for embedding arbitrary image data in the correction target area, and image data of the correction target area in the image data decoded by the decoding means is stored in a corresponding area of another image area of the same frame. Image data correction means for replacing with image data estimated from the image data, and interleaving for converting the plurality of image areas obtained from the image data correction means into an image composed of a single image area by reverse processing of the interlaced scanning. A moving image encoding / decoding system comprising: a converting unit. 4. In a moving picture coding process for coding a moving picture and transmitting it to a network, each frame of the moving picture is converted into an image composed of a plurality of image areas by interlaced scanning before being coded. In the moving picture decoding process of receiving and decoding the moving picture, when a defective part due to an error or a part of the encoded data occurs in a certain image area among the plurality of image areas, the defective part is removed. It is possible to correct with the normal data of the corresponding portion of the other image area of the same frame, and to convert the plurality of image areas after the correction into an image composed of a single image area by the reverse processing of the interlaced scanning. A characteristic moving image encoding / decoding method. 5. In a moving picture coding process of coding a moving picture and transmitting it to a network, each frame of the moving picture is converted into an image composed of a plurality of image areas by interlaced scanning before being coded and coded. In a moving picture decoding process for receiving and decoding a moving picture, when some error or loss occurs in a part of the coded data in an image area of the plurality of image areas, the coded data of the same frame It is replaced with the coded data estimated from the corresponding coded data of the other image area, and after decoding the obtained coded data, the plurality of image areas are composed of a single image area by the reverse processing of the interlaced scanning. A moving image encoding / decoding method characterized by converting to an image. 6. In a moving picture coding process of coding a moving picture and transmitting it to a network, each frame of the moving picture is converted into an image composed of a plurality of image areas by interlaced scanning before being coded. In the moving picture decoding process of receiving and decoding the received moving picture, it corresponds to the coded data in which an error or loss occurs when the received coded data is decoded to generate an image composed of the plurality of image areas. The image data estimated from the image data of the corresponding region of the other image region of the same frame is embedded in the region to be corrected, which is the region to be corrected, and the obtained image regions are simply processed by reverse processing of the interlaced scanning. A moving image encoding / decoding method characterized by converting to an image composed of one image region. 7. An encoding device for encoding a moving image and transmitting the encoded image to a network, comprising interlace conversion means for converting each frame of the moving image into an image composed of a plurality of image areas by interlaced scanning before encoding. An encoding device characterized by the above. 8. A decoding device for receiving, via a network, encoded data of a moving image, which has been converted into an image composed of a plurality of image regions by interlaced scanning of each frame of the moving image before encoding, and decoding the same. , If a part of the coded data has an error or a loss in a certain image area of the plurality of image areas, the coded data is estimated from the corresponding coded data of another image area of the same frame. And the encoded data obtained from the encoded data correction unit are decoded, and then the plurality of image regions are converted into an image composed of a single image region by the reverse processing of the interlaced scanning. An interleaving conversion means for performing the decoding. 9. A decoding device for receiving, via a network, coded data of a moving image, which has been converted into an image composed of a plurality of image regions by interlaced scanning of each frame of the moving image before encoding, and decoding the data. Decoding by embedding arbitrary image data in the correction target area, which is a portion corresponding to the encoded data in which an error or loss has occurred when the received encoded data is decoded to generate an image composed of the plurality of image areas And image data correction means for replacing the image data of the correction target area in the image data decoded by the decoding means with the image data estimated from the image data of the corresponding area of the other image area of the same frame. ,
A decoding device, comprising: an interleave conversion unit that converts the plurality of image regions obtained from the image data correction unit into an image composed of a single image region by a process reverse to the interlaced scanning. 10. An interlace for converting a computer, which constitutes an encoding device for encoding a moving image and transmitting it to a network, into an image composed of a plurality of image areas by interlaced scanning of each frame of the moving image before encoding. A program that functions as a conversion means. 11. A decoding device for receiving, via a network, coded data of a moving image obtained by converting each frame of the moving image into an image composed of a plurality of image areas by interlaced scanning before encoding and decoding the decoded data. When a part of the coded data in an image area among the plurality of image areas has an error or loss, the coded data is inferred from the corresponding coded data of another image area of the same frame. Coded data correcting means for replacing the coded data obtained by the coded data correcting means, and the plurality of image areas after decoding the coded data obtained from the coded data correcting means are formed of a single image area by reverse processing of the interlaced scanning. A program that functions as an interleave conversion unit that converts an image. 12. A decoding device for receiving, via a network, encoded data of a moving image, which has been converted into an image composed of a plurality of image regions by interlaced scanning of each frame of the moving image before encoding, and decoding the same. An arbitrary image is included in the correction target area, which is a portion corresponding to the coded data in which an error or omission has occurred when the received computer-generated data is decoded to generate an image composed of the plurality of image areas. Decoding means for embedding data, image data for replacing image data of the correction target area in the image data decoded by the decoding means with image data estimated from image data of a corresponding area of another image area of the same frame Correction means, the plurality of image areas obtained from the image data correction means from a single image area by the reverse processing of the interlaced scanning A program that functions as an interleaved conversion means for converting to a different image.