CN100364335C - Image encoding device and image encoding method - Google Patents
Image encoding device and image encoding method Download PDFInfo
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- CN100364335C CN100364335C CNB038240637A CN03824063A CN100364335C CN 100364335 C CN100364335 C CN 100364335C CN B038240637 A CNB038240637 A CN B038240637A CN 03824063 A CN03824063 A CN 03824063A CN 100364335 C CN100364335 C CN 100364335C
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- H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
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- H04N19/46—Embedding additional information in the video signal during the compression process
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- H—ELECTRICITY
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Abstract
The present invention relates to an image encoding device for adding the intrinsic information of a frame representing scene variation information, etc. to a correct position in encoded dynamic image data, and an image encoding method thereof. An encoding processing part (1) compresses and encodes the input dynamic image data, and a first counter (2) counts the number of images generated by the encoding processing part (1). The frame information for representing the intrinsic information of the frame in the input dynamic image data corresponds to a value of the first counter (2) and is stored by a frame information storage part (4). Specified head part information is inserted into the images generated by the encoding processing part (1) by a head part information insertion part (6). A second counter (7) counts the number of the images received by the head part information insertion part (6). Frame information corresponding to the images coinciding to the first counter (2) and the second counter (7) is written into the head part information corresponding to the initial data of the images according to the frame information storage part (4) when the head part information is inserted by the head part information insertion part (6).
Description
Technical field
The present invention relates to a kind of being used for carries out image encoded code device and method for encoding images to dynamic image, particularly can the data behind coding in the picture coding device and the method for encoding images of frame intrinsic information of information etc. of additional representation such as scene change information.
Background technology
In recent years, generally use MPEG (Motion Picture Experts Group) equipressure to reduce the staff coding mode, dynamic image is handled as numerical data.Such dynamic image data is recorded on the various recording mediums, perhaps receives and dispatches by network and utilizes.In addition, for dynamic image data, during the beginning of additional representation image record and the scene change information during scene conversion.For example when playing dynamic image data, the generation of retrieval when the scene change information is applied to scene conversion and the rough image of this moment etc.
Change as in the past the scene that can from dynamic image data, detect, and in these data the image recording structure of additional scene change information, following image recording structure is arranged (for example, with reference to patent documentation 1): the storage of 2 frames that will import recently all the time is in buffer storage, utilize the scene change detecting circuit, from current frame and nearest 2 frames, detect and have or not scene to change, under the situation that detects the scene variation, utilize scene to change the adjunct circuit information that the additional representation scene changes in system information, utilize diverter switch again, according to having or not scene to change, optionally output is additional the data of the information that the expression scene changes and data of the information of additional representation scene variation not.
Patent documentation 1: the spy open the 2000-115665 communique (paragraph sequence number [0014]～[0032], Fig. 1)
In addition, recently, carry out compressed encoding, and the device that it is recorded on the recording medium such as CD popularizes just constantly, begin to consider also additional scene change information in this device to the television image that for example receives from antenna with from the picture signal of outside input.For example, using the MPEG mode to carry out in the device of compressed encoding received image signal temporarily being kept in the frame memory, utilizing encoding section 1 frame or 1 field ground successively it to be read and carry out compressed encoding.But also that video flowing that will generate thus in multiplexing unit and audio stream etc. carry out together is multiplexing, and it is recorded in the recording medium as mpeg stream.
When generating such mpeg stream, add under the situation of scene change information, following method has been proposed: according to the data in the frame memory of the leading portion that is stored in encoding section, detect and have or not scene to change, in multiplexing unit, the information that the expression scene is changed is recorded in the option area of head etc.
But owing to adopt the variable length code mode in the MPEG mode, so the data volume of the video flowing of time per unit is unfixing as a rule, and the timing of the multiplexing process in multiplexing unit neither Fixed Time Interval to each frame.Therefore, in said method, the needed time of writing of scene change information that detects that changes from scene changes brokenly, is difficult in the head of the packets of information that comprises the initial data that the target frame that scene changes has taken place and correctly writes the scene change information.
Summary of the invention
The present invention is proposed in view of the above problems, its purpose be to provide a kind of can the dynamic image data behind coding in, will append to the picture coding device of tram such as the frame intrinsic information of scene change information etc.
In addition, another object of the present invention is to provide a kind of can the dynamic image data behind coding in, will append to the method for encoding images of tram such as the frame intrinsic information of scene change information etc.
In the present invention, in order to address the above problem, provide picture coding device shown in Figure 1.This picture coding device is used for dynamic image is encoded, and it is characterized in that, has: the frame information test section, be used for from the dynamic image data of being imported, and detect the frame information of the intrinsic information of expression frame in this dynamic image data; Encoding processor 1 is used for the described dynamic image data of being imported is carried out compressed encoding; The 1st counter 2, counting is by the quantity of the image of described encoding processor 1 generation; Frame information preservation portion 4 is mapped the count value of frame information that described frame information test section detects and described the 1st counter 2 and with its preservation; Header information insertion section 6 receives image that is generated by described encoding processor 1 and the header information that inserts regulation; The 2nd counter 7, count the quantity of the image of described header information insertion section 6 receptions, described header information insertion section 6 is with reference to described frame information preservation portion 4, will the described frame information corresponding write with the image when each count value of described the 1st counter 2 and the 2nd counter 7 is consistent with the corresponding described header information of the initial data of this image in.
In such picture coding device, utilize 1 pair of dynamic image data of being imported of encoding processor to carry out compressed encoding, utilize 2 pairs of quantity of the 1st counter to count by the image of encoding processor 1 generation.At this moment, utilize frame information preservation portion 4, the count value of the frame information of the frame intrinsic information in the dynamic image that expression imports and the 1st counter 2 is mapped and its preservation.In addition, in header information insertion section 6, in the image of header information insertion with regulation, utilize the quantity of the image of 7 pairs of header information insertion sections of the 2nd counter, 6 receptions to count by encoding processor 1 generation.Herein, in header information insertion section 6, reference frame information storing section 4 when inserting header information, since will the frame information corresponding write with the image when each count value of the 1st counter 2 and the 2nd counter 7 is consistent with the corresponding header information of the initial data of this image in, therefore obtain the frame information corresponding reliably, and write correct position with the image that generates.
In addition, the invention provides a kind of being used for carries out the image encoded coding method to dynamic image, it is characterized in that, from the dynamic image data of being imported, detects the frame information of the intrinsic information of expression frame in this dynamic image data; The described dynamic image data of being imported is carried out compressed encoding, and will count as the 1st amount of images by the quantity that described compressed encoding is handled the image that generates, make the frame information that is detected corresponding with described the 1st amount of images and with its preservation, when receiving image that generates by described compressed encoding processing and the header information that inserts regulation, the quantity of the image that received is counted as the 2nd amount of images, will the described frame information corresponding write with the image when described the 1st amount of images and the 2nd amount of images are consistent with the corresponding described header information of the initial data of this image in.
In such method for encoding images, the dynamic image data of being imported is carried out compressed encoding, and will count as the 1st amount of images by the quantity that this compressed encoding is handled the image that generates.In addition, make the frame information of the frame intrinsic information in the dynamic image that expression imports corresponding with the 1st amount of images and with its preservation.And, when receiving image that generates by described compressed encoding processing and the header information that inserts regulation, the quantity of the image that received is counted as the 2nd amount of images, will the frame information corresponding write with the image when the 1st amount of images and the 2nd amount of images are consistent with the corresponding described header information of the initial data of this image in.Therefore, when inserting header information, obtain the frame information corresponding reliably, and write correct position with the image that generates.
Above-mentioned and other purpose of the present invention, feature and advantage will clearer and more definite according to expression as the accompanying drawing and the following related description of the preferred implementation of example of the present invention.
Description of drawings
Fig. 1 is the schematic diagram that is used to illustrate principle of the present invention.
Fig. 2 is the block diagram of structure of the mpeg encoded device of expression embodiment of the present invention.
Fig. 3 is the flow chart of the handling process of expression video coding portion.
Fig. 4 is the flow chart of the handling process of expression multiplexing unit.
Fig. 5 is the exemplary plot of the form of the head zone behind the expression insertion scene change information.
Embodiment
Embodiments of the present invention are described with reference to the accompanying drawings.
Fig. 1 is the schematic diagram that is used to illustrate principle of the present invention.
In the explanation of following Fig. 1, to using situation of the present invention to describe in following picture coding device: this picture coding device can be encoded to the dynamic image data of being imported, generation dynamic image stream, and with this dynamic image stream is example, sound stream is carried out multiplexing, and with its output.This picture coding device shown in Figure 1 has encoding processor the 1, the 1st counter 2, frame information test section 3, frame information preservation portion 4 and multiplexing processing section 5.In addition, in multiplexing processing section 5, be provided with header information insertion section 6 and the 2nd counter 7.
Encoding processor 1 is carried out compressed encoding with the coded system of regulation to the dynamic image data of being imported, and generates dynamic image stream.In dynamic image stream, frame by frame or word for word section ground generates data behind the compressed encoding as image.
The quantity of the image that the 1st counter 2 countings generate in encoding processor 1.The count value of this moment is outputed in the frame information preservation portion 4.
Frame information test section 3 detects frame information from the dynamic image data of being imported.Wherein, frame information is represented the frame intrinsic information in the dynamic image data.For example, can comprise and be illustrated in the information that changes as occurrence scene in the frame of object and at vertical blanking interval (VBI: the VBI information of Bao Cuning etc. vertical blanking interval).For example in the input section of encoding processor 1, be provided with under the situation of frame memory of the dynamic image data that temporary transient storage imports, can utilize the data that are stored in this frame memory to detect this frame information.
In frame information preservation portion 4, this moment detected frame information in frame information test section 3 is associated with count value from the 1st counter 2, and with its preservation.
Dynamic image after multiplexing processing section 5 will be encoded in encoding processor stream and the sound stream behind the voice data coding is carried out multiplexing generates multiplex stream.In this multiplexing processing section 5, header information insertion section 6 is inserted into the header information of regulation from the dynamic image stream that encoding processor 1 receives.
The quantity of the image in the dynamic image stream that the 2nd counter 7 counting header information insertion sections 6 receive, and export to header information insertion section 6.
Herein, header information insertion section 6 is when carrying out the insertion of header information, and reference frame information storing section 4 is obtained the frame information corresponding to the count value identical with the count value of the 2nd counter 7.And, this frame information is write in the header information corresponding with the initial data of the image that receives at this moment.For example, be written in the packets of information head of the packets of information that comprises this initial data.
In such picture coding device, in encoding processor 1, the dynamic image data of being imported is carried out compressed encoding, it is offered multiplexing processing section 5 as dynamic image stream.In multiplexing processing section 5, in header information insertion section 6, it is inserted header information, and it is carried out multiplexing with sound stream, and export as multiplex stream.
In addition, utilize in the dynamic image data of frame information test section 3 from be input to encoding processor 1 and detect frame information, in frame information preservation portion 4, the count value of this frame information and the 1st counter 2 is mapped and preserves.Thus, frame information and the image corresponding with the frame that becomes its detection resources are mapped.
At this, because the quantity of 2 pairs of images that generate in encoding processor 1 of the 1st counter is counted, the quantity of the image that 7 pairs of header information insertion sections of the 2nd counter 6 receive is counted, therefore, when the 1st counter 2 and the 2nd counter 7 were identical count value, the image that becomes the counting object was identical.So header information insertion section 6 by obtaining the frame information corresponding to the count value of 1st counter 2 identical with the count value of the 2nd counter 7 at this moment, can obtain the frame information corresponding with the image that is received reliably when receiving image.
In header information insertion section 6, for example, when the image that receives from encoding processor 1, the initial part of recognition image, the 2nd counter 7 of this moment is increased progressively, utilize this count value to obtain frame information, can easily the frame information that is obtained be written in the header information corresponding with the initial data of image thus.So, in multiplex stream, each writing position of the data of frame information and the image corresponding with it correctly is consistent, when playing this multiplex stream, can be to extract and to utilize frame information with the synchronous correct timing of playing image.
Next, embodiments of the invention are elaborated.In the following description, suppose and using situation of the present invention in to the device of the encoding video signal imported in the MPEG-2 mode.In addition, as frame information, be the information that the expression scene of being added changes the information that takes place.
Fig. 2 is the block diagram of structure of the mpeg encoded device of expression embodiment of the present invention.
The represented mpeg encoded device of Fig. 2 is in the MPEG-2 mode video data and the voice data of being imported to be carried out the device that compressed encoding generates mpeg stream.This mpeg encoded device has frame memory 10, scene change detecting circuit 20, video coding portion 30, audio coder 40 and multiplexing unit 50.
The video and audio signal that is input to this mpeg encoded device is for example imported as analog signal from external equipments such as TV tuner.Vision signal is for example imported as composite signal, after in not shown Y/C separator, it being separated into luminance signal and color difference signal, utilize not shown NTSC (national television systems committee) decoder to carry out A/D conversion and chroma coder processing again, and be input in the frame memory 10 as numerical data.
When by video encoder 31 when frame memory 10 is read the video data of a frame, scene change detecting circuit 20 is read becomes frame and its previous frame that is stored in the frame memory 10 of reading object, carries out the detection that scene changes.In the detection that scene changes, for example statistical disposition is included in 2 pixel values in the frame, can use the method for obtaining the difference between the frame or obtain the method etc. of the coefficient correlation between the frame.In these detect, for example can only use luminance signal or only use color difference signal as pixel value.In addition, scene change detecting circuit 20 possesses register 21, and according to testing result, the information that has or not occurrence scene to change expression is kept in the register 21.
In video coding portion 30, be provided with video encoder 31, counter 32 and scene change information treatment circuit 33.Video encoder 31 frame by frames are read the video data that is stored in the frame memory 10, carry out compressed encoding in the MPEG-2 mode and generate image, and export it to multiplexing unit 50 as video ES (basic stream).In addition, 1 image of video encoder 31 every generations increases progressively with regard to the count value that makes counter 32, and the generation of image is notified to scene change information treatment circuit 33.
The quantity of 32 pairs of images that generate in video encoder 31 of counter is counted, and count value is exported to scene change information treatment circuit 33.When scene change information treatment circuit 33 when video encoder 31 is received the notice that image generates, obtain the count value of the counter 32 after increasing progressively, and with reference to the register 21 of scene change detecting circuit 20, judge to have or not scene to change, the information that has or not scene to change expression stores in the memory 34 with the count value of being obtained.In memory 34, for example store the form that is mapped with count value that has or not with the scene variation.Perhaps, the count value in the time of also can only sequentially storing the occurrence scene variation.
On the other hand, the simulated audio signal of input is input in the audio coder 40 after converting numerical data to by not shown A/D converter.Audio coder 40 carries out compressed encoding in mpeg audio mode etc. to the voice data of input, outputs to multiplexing unit as audio ES.
In multiplexing unit 50, be provided with video ES buffer 51, audio ES buffer 52, MUX (multiplexer) 53, counter 54 and collation process circuit 55.
MUX 53 calls over data from video ES buffer 51 and audio ES buffer 52, carries out when writing head zone multiplexingly in system information that will regulation, generates mpeg stream.In addition, when MUX 53 when video ES buffer 51 is read the initial part of image, count-up counter 54 also is notified to the collation process circuit with reading of image.Then, be received in this image the judged result whether occurrence scene changes, in the head of the packets of information of the initial data of preserving image, write scene change information corresponding to judged result from collation process circuit 55.
The quantity of the image that counter 54 counting MUX 53 read from video ES buffer 51 is exported to collation process circuit 55 with count value.When collation process circuit 55 when MUX 53 receives the control signal of reading of notice image, the count value of usage counter 54 with reference to memory 34, judges that to same count value whether occurrence scene changes, and its result of determination is notified to MUX 53.
The elemental motion of this mpeg encoded device is as described below.The video data of input is saved in the frame memory 10 in proper order.In frame memory 10, each frame of the video data preserved is distributed image type, call over the data of each frame according to encoding process corresponding to image type by video encoder 31.1 frame data that 31 pairs of video encoders the are read generation image of encoding is saved in the data of image in the packets of information and exports in proper order as video ES.
The video ES that generates temporarily is kept in the video ES buffer 51, and from MUX 53, calls over.In addition, the audio ES that will generate in audio coder 40 also temporarily is kept in the audio ES buffer 52, and calls over from MUX 53.MUX 53 carries out multiplexing when the system information with necessity is inserted in the video ES that reads and the audio ES, generates mpeg stream and output.At this moment, the scene change information of additional result of determination based on collation process circuit 55 on the option area of the head of video information packets.
Next, describe in the processing of mpeg stream insertion scene change information being used for.
At first, to be kept at the video data in the frame memory 10, detect the generation that scene changes by the scene change detecting circuit.As mentioned above; From frame memory 10, read the data of each frame by video encoder 31 according to the encoding process order.Scene change detecting circuit 20 is whenever read 1 frame data from video encoder 31, just has or not scene to change according to the data of this frame and the Data Detection of its former frame, and testing result is kept in the register 21.
In video coding portion 30, video encoder 31 is whenever read 1 frame data and is generated 1 image from frame memory, with regard to the count value of count-up counter 32, and scene change information treatment circuit 33 judges with reference to register 21 and has or not scene to change, and carries out writing to memory 34.
Fig. 3 is the flow chart of the handling process in the expression video coding portion 30.Below, use this flow chart the processing in video coding portion 30 to be described along step number.
At step S301, video encoder 31 is read 1 frame video data from frame memory 10.Then,, according to the MPEG-2 mode data of being read are carried out compressed encoding and handle, generate 1 image at step S302.In addition, temporarily store the data of generation image into not shown output buffer after, it is outputed to the video ES buffer 51 of multiplexing unit 50.
At step S303, according to control signal from video encoder 31, the count value of count-up counter 32.Meanwhile, at step S304, scene change information treatment circuit 33 is judged to have or not scene to change with reference to register 21.At step S305, scene change information treatment circuit 33 count values with result of determination sum counter 32 are mapped and are kept in the memory 34.
At step S306, whether determination processing finishes, and returns step S301 under situation about proceeding, and reads the next frame video data, carries out compressed encoding.
By above processing, in memory 34, preserve the count value of distributing to each image that generates by video encoder 31 and be illustrated in whether the information that scene changes has taken place in each image.On the other hand, in multiplexing unit 50, utilize the quantity of the image that 54 couples of MUX 53 of counter read from video ES buffer 51 to count, by this count value and the count value that is kept in the memory 34 are checked, can be identified in easily whether the scene variation has taken place in the image of reading.
Fig. 4 is the flow chart of the handling process in the expression multiplexing unit 50.Below, utilize this flow chart to describe according to the processing of step number to multiplexing unit 50.
At step S401, MUX 53 reads the data that are stored in the video ES buffer 51.At this moment, for example reading with PES (Packetized Elementary Stream: grouping is stream substantially) packets of information is the unit data of unit.At step S402, MUX 53 judges the initial part that whether comprises image in the data of reading.This judgement is to begin code (Picture Start Code) by the image of being recorded and narrated in the head of reading image layer to carry out.Enter step S403 under the situation of initial part comprising, under situation about not comprising, enter step S406.
At step S403,, counter 54 is increased progressively according to control signal from MUX 53.At step S404, collation process circuit 55 is with reference to the storage data of memory 34, read corresponding to increase progressively after the information of the identical numerical value of the count value of counter 54, judge to have or not scene to change and notice MUX 53.At step S405, MUX 53 is according to the result of determination of collation process circuit 55, the scene change information is inserted in the option area in the head of PES packets of information.In addition, the insertion position about the scene change information will illustrate in Fig. 5 of back.
At step S406, MUX 53 utilizes the data of reading from audio ES buffer 52, generates the audio-frequency information bag, and it is multiplexed with output signal.At step S407, MUX 53 generates the video information packets in the head zone that system information with other necessity is inserted into regulation, and it is multiplexed with output signal.
At step S408, whether judge end process under situation about proceeding, to be back to step S401, in MUX 53, handle the data of reading from video ES buffer 51.By above processing, added the system flow of the MPEG-2 mode of scene change information from MUX 53 order outputs.
Fig. 5 is the exemplary plot of the form of the expression head zone of inserting the scene change information.
By the multiplexing process of MUX 53, will be saved in the PES packets of information from the data that video ES buffer 51 is read.In addition, in the initial data of frame was included in PES packets of information in the payload (pay load), head zone was expanded, and is provided with the storage area of timestamp etc. in this extended area, and the option area that is called as 16 bytes of PES exclusive data.So, by in this option area, inserting the scene change information, can be regularly synchronous when playing with the broadcast of image, correctly take out the scene change information.
In the present embodiment, in this PES exclusive data zone, writing down the quantity of the image that has or not scene to change and counted by counter 54.For example, in the 1st byte, the information of record about having or not scene to change.In this zone, under the situation that occurrence scene changes, write " 1 ", under the situation that occurrence scene does not change, write " 0 ".Then, in the zone of the 2nd byte～the 5th byte, represent that with 32 data record image becomes the information what are opened from encoding at first.The count value of these value usage counters 54.
In above mpeg encoded device, each image that will generate in video encoder 31 is mapped with the information that expression has or not scene to change, and is kept in the memory 34.And, in multiplexing unit 50,,, check count value with reference to memory 34 by the quantity of image being counted when the multiplexing process, judge in this image, to have or not scene to change, will be inserted in the multiplex stream corresponding to the scene change information of result of determination.
Like this, be that unit discerns and has or not scene to change by quantity with image, in MUX 53, can with the multiplexing process of view data synchronously and correctly insert the scene change information, the original position that its insertion position can the slip chart picture.And, by being inserted into the position as PES exclusive data zone, can be correctly and easily guarantee image and scene change information synchronously.Therefore, can when the mpeg stream that play to generate, correctly extract generation that scene changes regularly, for example can correctly carry out synchronously with playing image to the visit of the start-up portion of each scene and the generation of rough image etc.
In addition, in the above-described embodiment, be illustrated, but also can be applied in the situation of encoding according to field to come the situation of coding video frequency data according to frame.In this case, the scene change detecting circuit also can and detect scene in two fields that store into the frame memory in its front according to the field of being read from frame memory by video encoder and changes.
In addition, in the above description, be that unit discerns and has or not scene to change with the quantity of image, but also can be with GOP (Group Of Picture: be that unit discerns image sets).In this case, in video encoder 31, when generating the start image of GOP, count, this count value and expression are had or not the information write-in memory of scene variation.And, in multiplexing unit too, when the start image of multiplexing GOP, have or not scene to change with reference to above-mentioned memory judgement.In addition, the scene change information is inserted in the PES packets of information that comprises the GOP head.In this case, the writing position of scene change information only postpones the number frame from the position that actual occurrence scene changes sometimes, but can generally be located at the start-up portion positioning function in the playing device of MPEG-2 mode usually, determines the occurrence positions that scene changes.
In addition, perhaps inferior by the beginning of user's repeated video/stop action in the situation of a plurality of programs being carried out the timer video recording, newly begin the timing of recording a video by inserting the scene change information when the video recording beginning, can from played data, extracting out.Be used under the situation of this purposes, the scene change information for example can be inserted in the user data area of adjacency of sequence header back.
In addition, under the situation of the code device that utilizes the MPEG-1 mode to encode, for example, by before the position of the initial data of multiplexed frame, the specific information bag of scene change information has been preserved in insertion, can correctly extract the occurrence positions that scene changes when playing out.
As mentioned above, according to picture coding device of the present invention, in the time of in the data after header information is inserted into coding,, can obtain the frame information corresponding with the image that generates by the reference frame information storing section.So, can frame information be write in the header information corresponding reliably with the initial data of this image, can prevent that writing position is offset.
In addition, according to method for encoding images of the present invention, frame information and the 1st amount of images are being mapped and are preserving, when inserting header information in the data behind the coding, check by image that will be received and the 2nd amount of images that counts out, can obtain the frame information corresponding with the image that generates.Therefore, can frame information be write in the header information corresponding reliably, can prevent that writing position is offset with the initial data of this image.
Above-mentionedly only represent principle of the present invention.And, for industry personnel, can carry out various deformation, change, the present invention do not limit with above-mentioned shown in, illustrated correct structure and application examples, corresponding all variation and equivalent are all thought in the scope of the present invention of claims and its equivalent.
Claims (8)
1. a picture coding device is used for dynamic image is encoded, and it is characterized in that having:
The frame information test section is used for from the dynamic image data of being imported, and detects the frame information of the intrinsic information of expression frame in this dynamic image data;
Encoding processor is carried out compressed encoding to the described dynamic image data of being imported;
The 1st counter is counted the quantity of the image that generated by described encoding processor;
Frame information preservation portion is mapped the count value of frame information that described frame information test section detects and described the 1st counter and with its preservation;
The header information insertion section receives image that is generated by described encoding processor and the header information that inserts regulation;
The 2nd counter, the quantity of the image that described header information insertion section is received is counted,
Described header information insertion section is with reference to described frame information preservation portion, will the described frame information corresponding write with the image when each count value of described the 1st counter (2) and the 2nd counter (7) is consistent with the corresponding described header information of the initial data of this image in.
2. picture coding device according to claim 1 is characterized in that, described header information insertion section is located in the multiplexing processing section, and the dynamic image stream that this multiplexing processing section will comprise the described image that is generated by described encoding processor carries out multiplexing with sound stream.
3. picture coding device according to claim 1 is characterized in that, described frame information comprises the information that the expression occurrence scene changes in the corresponding frame.
4. picture coding device according to claim 3 is characterized in that, described frame information test section also has:
Memory, the described dynamic image data that temporary transient storage is imported;
Scene change-detection portion according to the frame or field data and former frame or the field data that are stored in the described memory, detects and has or not described scene to change.
5. picture coding device according to claim 4 is characterized in that,
When described encoding processor is read frame or field data from described memory at every turn, all carry out compressed encoding and handle, generate described image,
When the frame of being read described compressed encoding process object by described encoding processor from described memory or field data, described scene change-detection portion carries out the detection that described scene changes to this frame or this field data.
6. picture coding device according to claim 1 is characterized in that, described frame information comprises: the vertical blanking interval canned data of each frame in the described dynamic image data of being imported.
7. a picture coding device is used for dynamic image is encoded, and it is characterized in that having:
The frame information test section is used for from the dynamic image data of being imported, and detects the frame information of the intrinsic information of expression frame in this dynamic image data;
Encoding processor is carried out compressed encoding to the described dynamic image data of being imported;
The 1st counter is a unit with the group after many images are divided into groups, and comes the image that is generated by described encoding processor is counted;
Frame information preservation portion is mapped the count value of frame information that described frame information test section detects and described the 1st counter and with its preservation;
The header information insertion section receives image that is generated by described encoding processor and the header information that inserts regulation;
The 2nd counter is that unit comes the image that described header information insertion section receives is counted with described group,
Described header information insertion section is with reference to described frame information preservation portion, described group of corresponding described frame information in the time of will be consistent with each count value of described the 1st counter and the 2nd counter write with the corresponding described header information of the initial data of this group in.
8. a method for encoding images is used for dynamic image is encoded, it is characterized in that,
From the dynamic image data of being imported, detect the frame information of the intrinsic information of expression frame in this dynamic image data;
The described dynamic image data of being imported is carried out compressed encoding, and will count as the 1st amount of images by the quantity that described compressed encoding is handled the image that generates;
Make the frame information that is detected and described the 1st amount of images is mapped and with its preservation;
When receiving image that generates by described compressed encoding processing and the header information that inserts regulation, the quantity of the image that received is counted as the 2nd amount of images, will the described frame information corresponding write with the image when described the 1st amount of images and the 2nd amount of images are consistent with the corresponding described header information of the initial data of this image in.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2003/005311 WO2004095844A1 (en) | 2003-04-24 | 2003-04-24 | Image encoding device and image encoding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1689331A CN1689331A (en) | 2005-10-26 |
| CN100364335C true CN100364335C (en) | 2008-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB038240637A Expired - Fee Related CN100364335C (en) | 2003-04-24 | 2003-04-24 | Image encoding device and image encoding method |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3923498B2 (en) |
| CN (1) | CN100364335C (en) |
| AU (1) | AU2003231503A1 (en) |
| WO (1) | WO2004095844A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101742286B (en) * | 2008-11-11 | 2013-07-24 | 北京中星微电子有限公司 | Video coding and decoding methods and video coding and decoding devices |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08241217A (en) * | 1995-03-07 | 1996-09-17 | Hitachi Ltd | Information processor |
| JPH11262005A (en) * | 1998-03-06 | 1999-09-24 | Nec Corp | System for encoding image |
| JP2000115665A (en) * | 1998-10-06 | 2000-04-21 | Canon Inc | Image recording device and method and storage medium |
| CN1293516A (en) * | 1999-10-19 | 2001-05-02 | 三星电子株式会社 | Equipment and method of utilizing key frame record and/or recurrence of moving picture |
| JP2002033712A (en) * | 2000-07-17 | 2002-01-31 | Matsushita Electric Ind Co Ltd | Packet processor and packet output method therefor |
-
2003
- 2003-04-24 AU AU2003231503A patent/AU2003231503A1/en not_active Abandoned
- 2003-04-24 WO PCT/JP2003/005311 patent/WO2004095844A1/en active Application Filing
- 2003-04-24 CN CNB038240637A patent/CN100364335C/en not_active Expired - Fee Related
- 2003-04-24 JP JP2004571101A patent/JP3923498B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08241217A (en) * | 1995-03-07 | 1996-09-17 | Hitachi Ltd | Information processor |
| JPH11262005A (en) * | 1998-03-06 | 1999-09-24 | Nec Corp | System for encoding image |
| JP2000115665A (en) * | 1998-10-06 | 2000-04-21 | Canon Inc | Image recording device and method and storage medium |
| CN1293516A (en) * | 1999-10-19 | 2001-05-02 | 三星电子株式会社 | Equipment and method of utilizing key frame record and/or recurrence of moving picture |
| JP2002033712A (en) * | 2000-07-17 | 2002-01-31 | Matsushita Electric Ind Co Ltd | Packet processor and packet output method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3923498B2 (en) | 2007-05-30 |
| WO2004095844A1 (en) | 2004-11-04 |
| AU2003231503A1 (en) | 2004-11-19 |
| CN1689331A (en) | 2005-10-26 |
| JPWO2004095844A1 (en) | 2006-07-13 |
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