CN107710760A - Method for encoding images, device and image processing equipment - Google Patents

Method for encoding images, device and image processing equipment Download PDF

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Publication number
CN107710760A
CN107710760A CN201580080762.XA CN201580080762A CN107710760A CN 107710760 A CN107710760 A CN 107710760A CN 201580080762 A CN201580080762 A CN 201580080762A CN 107710760 A CN107710760 A CN 107710760A
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color component
number information
bit
coding
described image
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叶姜莉
朱建清
王争
数井君彦
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Fujitsu Ltd
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Fujitsu Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • H04N19/463—Embedding additional information in the video signal during the compression process by compressing encoding parameters before transmission

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

A kind of method for encoding images, device and image processing equipment.Described image coding method includes：Determine color component number information and color component used in bit number information；And bit number information used in each color component is not encoded to the PPS corresponding to described image frame when the parameter to picture frame encodes.It is possible thereby to reduce redundancy, the bit cost of coding is further reduced, and HEVC syntactic structure can be optimized.

Description

Image encoding method, device and image processing equipment Technical field
The present invention relates to graphics technology field, in particular to a kind of image encoding method, device and image processing equipment.
Background technique
In current efficient video coding (HEVC, High Efficiency Video Coding) in standard JCTVC-U1005, image coding can be carried out to a stream or multiple streams (alternatively referred to as sequence), each stream can have a sequence parameter set (SPS, Sequence Parameter Set), such as SPS can be placed on region header file (header) of stream.Each stream can correspond to one or more picture frames, and each picture frame has an image parameters collection (PPS, Picture Parameter Set), such as PPS can be placed on the header file region of picture frame.
Palette fallout predictor (Palette Predictor) can be used in image coding.Carry out color component when palette prediction number information (there are how many a color components, for example, it is monochromatic when there was only luminance component, then color component only one；It may include luminance component and chromatic component when multiple colors, then color component is, for example, three) it can be defined in the chroma_format_idc of SPS, and bit number information used in color component (can be described as bit-depth, such as each color component is indicated using several bits) can be defined in the seq_parameter_set_rbsp () of SPS.
In addition, the number information of color component can also be defined in the pps_scc_extension () of PPS, such as it is defined as monochrome_palette_flag；And bit number information used in color component can also be defined in the pps_scc_extension () of PPS, such as be defined as luma_bit_depth_entry_minus8 and chroma_bit_depth_entry_minus8.
It should be noted that the above description of the technical background is intended merely to conveniently carry out clear, complete explanation to technical solution of the present invention, and facilitates the understanding of those skilled in the art and illustrate.It cannot be merely because these schemes be expounded in background technology part of the invention and think that above-mentioned technical proposal is known to those skilled in the art.
Summary of the invention
But, inventor's discovery, the case where multiple PPS are corresponded to for a SPS, as bit stream coherence request and make SPS and PPS contain color component number information and color component used in bit number information, i.e. bit number information used in the number information of color component and color component occurs superfluous in encoding and decoding It is remaining.
The embodiment of the present invention provides a kind of image encoding method, device and image processing equipment.Purpose be reduce color component number information and color component used in bit number information redundancy, to reduce the bit cost of coding, and optimize the syntactic structure of HEVC.
First aspect according to an embodiment of the present invention provides a kind of image encoding method, comprising:
Determine color component number information and color component used in bit number information；And
When the parameter to picture frame encodes not by image parameters collection corresponding to bit number information coding to described image frame used in the color component.
The second aspect according to an embodiment of the present invention provides a kind of picture coding device, comprising:
Information determination unit, determine color component number information and color component used in bit number information；
Coding unit, when the parameter to picture frame encodes not by image parameters collection corresponding to bit number information coding to described image frame used in the color component.
In terms of third according to an embodiment of the present invention, a kind of image processing equipment is provided, comprising:
Image encoder, determine color component number information and color component used in bit number information；And when the parameter to picture frame encodes not by image parameters collection corresponding to bit number information coding to described image frame used in the color component；And/or
Image decoder, according to sequence parameter set corresponding to the stream where described image frame determine the color component used in bit number information, and described image frame is decoded.
Another aspect according to an embodiment of the present invention, a kind of computer-readable program is provided, wherein when executing described program in image processing equipment, described program makes computer execute image encoding method as described above and/or corresponding picture decoding method in described image processing equipment.
Another aspect according to an embodiment of the present invention, a kind of storage medium for being stored with computer-readable program is provided, wherein the computer-readable program makes computer execute image encoding method as described above and/or corresponding picture decoding method in image processing equipment.
The beneficial effect of the embodiment of the present invention is, will not be in PPS corresponding to bit number information coding to picture frame used in color component when encoding to picture frame.Thus redundancy can be not only reduced, the bit cost of coding is further decreased, and the syntactic structure of HEVC can be optimized.
Referring to following description and accompanying drawings, only certain exemplary embodiments of this invention is disclosed in detail, specifying the principle of the present invention can be in a manner of adopted.It should be understood that embodiments of the present invention are not so limited in range.? In the range of the spirit and terms of appended claims, embodiments of the present invention include many changes, modifications and are equal.
The feature for describing and/or showing for a kind of embodiment can be used in one or more other embodiments in a manner of same or similar, be combined with the feature in other embodiment, or the feature in substitution other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when using herein, but the presence or additional of one or more other features, one integral piece, step or component is not precluded.
Detailed description of the invention
Many aspects of the invention may be better understood referring to attached drawing below.Component in attached drawing is not proportional drafting, and is intended merely to show the principle of the present invention.For the ease of showing and describing some parts of the invention, corresponding part may be exaggerated or minimized in attached drawing.
It can be combined with elements and features shown in one or more other attached drawings or embodiment in elements and features described in one drawing or one embodiment of the invention.In addition, in the accompanying drawings, similar label indicates corresponding component in several attached drawings, and may be used to indicate corresponding component used in more than one embodiment.
Fig. 1 is a schematic diagram of the image encoding method of the embodiment of the present invention 1；
Fig. 2 is another schematic diagram of the image encoding method of the embodiment of the present invention 1；
Fig. 3 is another schematic diagram of the image encoding method of the embodiment of the present invention 1；
Fig. 4 is a schematic diagram of the picture coding device of the embodiment of the present invention 2；
Fig. 5 is a composition schematic diagram of the image encoder of the embodiment of the present invention 2；
Fig. 6 is a schematic diagram of the image processing equipment of the embodiment of the present invention 3.
Specific embodiment
Referring to attached drawing, by following specification, aforementioned and other feature of the invention be will be apparent.In the specification and illustrated in the drawings, specifically disclose only certain exemplary embodiments of this invention, which show some embodiments that can wherein use principle of the invention, it will be appreciated that, the present invention is not limited to described embodiments, on the contrary, the present invention includes whole modifications, modification and the equivalent fallen within the scope of the appended claims.
In JCTVC-U1005, screen content coding (SCC, Screen Content Coding) SPS in palette initialization section define color component number information and color component used in bit number information.
Table 1 shows a part of grammer of SPS.
Table 1
As shown in table 1, the number information of the color component of palette prediction initialization can be obtained according to chroma_format_idc in SPS.In addition, bit number information used in color component adds 8 to obtain by the Bit Syntax Element decoded in SPS, such as syntactic element bit_depth_luma_minus8 and bit_depth_chroma_minus8 in following table 2.
Table 2 shows another part grammer of SPS.
Table 2
In JCTVC-U1005, in the PPS of SCC palette initialization section also define color component number information and color component used in bit number information.
Table 3 shows a part of grammer of PPS.
Table 3
As shown in table 3, the number information of the color component of palette prediction initialization can be obtained according to monochrome_palette_flag in PPS.In addition, bit number information used in color component can according in PPS luma_bit_depth_entry_minus8 and chroma_bit_depth_entry_minus8 obtain.
Due to the coherence request of encoding abit stream, when the monochrome_palette_flag in PPS is equal to 1, the chroma_format_idc in SPS should be 0；When the monochrome_palette_flag in PPS is equal to 0, chroma_format_idc in SPS should be the value (such as 1,2 or 3) greater than 0.
Furthermore, the information BitDepthEntryY (wherein, BitDepthEntryY=8+luma_bit_depth_entry_minus8) relevant to bit-depth of luminance component should be equal to the information BitDepthY relevant to bit-depth of luminance component in SPS in PPS；The bit-depth relevant information BitDepthEntryC of chromatic component in PPS (wherein, BitDepthEntryC=8+chroma_bit_depth_entry_minus8) should be equal to the information BitDepthC relevant to bit-depth of luminance component in SPS.
Therefore, bit number information used in the number information of color component and color component is not only encoded in the part SPS, but also is also encoded in the part PPS.Such as the monochrome_palette_flag in PPS, luma_bit_depth_entry_minus8, chroma_bit_depth_entry_minus8 can be obtained from the relevant information in SPS.Current coding mode not only results in redundancy, and syntactic structure is not clear enough.
The embodiment of the present invention is described in detail below.
Embodiment 1
The embodiment of the present invention provides a kind of image encoding method.Fig. 1 is a schematic diagram of the image encoding method of the embodiment of the present invention, as shown in Figure 1, described image coding method includes:
Step 101, determine color component number information and color component used in bit number information；And
Step 102, when the parameter to picture frame encodes, not by PPS corresponding to bit number information coding to picture frame used in color component.
In the present embodiment, video image can be divided into one or more streams and be encoded, and each stream has SPS and may include one or more picture frames；Each picture frame has PPS.In addition, bit number information used in the number information and color component of color component can predefine before encoding to picture frame, existing any way can be used.
When encoding to a certain picture frame, the SPS of stream corresponding to the possible picture frame is encoded；In such a case, it is possible to not by PPS corresponding to bit number information coding to the picture frame used in color component, and these information can be obtained according to SPS.
Fig. 2 is another schematic diagram of the image encoding method of the embodiment of the present invention, shows an embodiment of the invention.As shown in Fig. 2, described image coding method includes:
Step 201, determined when the parameter of convection current is encoded color component number information and color component used in bit number information；
In the present embodiment, it may be determined that bit_depth_luma_minus8 and bit_depth_chroma_minus8 in the chroma_format_idc and seq_parameter_set_rbsp () of SPS；It specifically can be as described in existing standard.
Step 202, bit number information coding used in the number information and color component when the parameter of convection current is encoded by color component is into the corresponding SPS of stream；
It in the present embodiment, can be by the bit_depth_luma_minus8 and bit_depth_chroma_minus8 progress encoding abit stream in the chroma_format_idc of SPS and seq_parameter_set_rbsp ()；It specifically can be as described in existing standard.
Step 203, determined when the parameter to picture frame encodes color component number information and color component used in bit number information；
In the present embodiment, it may be determined that the monochrome_palette_flag of PPS, luma_bit_depth_entry_minus8, chroma_bit_depth_entry_minus8；It specifically can be as described in existing standard.
Step 204, PPS corresponding to the number information coding to picture frame when the parameter to picture frame is encoded by color component, and not by PPS corresponding to bit number information coding to picture frame used in color component.
In the present embodiment, the coding of SPS parameter can be remained unchanged, and bit number information used in color component can be deleted for the coding of PPS parameter.
Table 4 diagrammatically illustrates a part of grammer of the PPS of present embodiment.Such as the relevant information of bit-depth is deleted in PPS.
Table 4
It is assumed that a SPS corresponds to N number of PPS, if assuming that SPS needs SPS_org bit in coding, N number of PPS is respectively necessary for PPS_org1, PPS_org2 ... PPS_orgN bit using existing standard；The bit-depth of luminance component and chromatic component is 8bit.
For using most short bit sequence, SPS and PPS need the bit of following quantity to be encoded altogether:
Total_org=SPS_org+PPS_org1+PPS_org2+ ...+PPS_orgN.
And after using coding mode as shown in table 4, SPS and PPS need the bit of following quantity to be encoded altogether:
Total_new=SPS_org+PPS_org1-2+PPS_org2-2+ ...+PPS_orgN-2=Total_org -2*N.
The embodiment of the present invention can not only reduce redundancy as a result, further decrease the bit cost of coding, and can optimize the syntactic structure of HEVC.
It is worth noting that, Fig. 2 only diagrammatically illustrates the case where present embodiment, however, the present invention is not limited thereto.Such as step 201 and step 203 can be merged progress or step 203 and can be omitted.The step of executing sequence, other can also be increased of each step can be changed according to the actual situation, or omit or merge one or more of steps.In addition, the relevant technologies can be referred to about specifically how to carry out the contents such as encoding abit stream.
It in other embodiments, can not also PPS corresponding to the number information coding to picture frame by color component in step 203；Monochrome_palette_flag i.e. in table 4 can also be deleted.
Fig. 3 is another schematic diagram of the image encoding method of the embodiment of the present invention, shows another embodiment of the invention.As shown in figure 3, described image coding method includes:
Step 301, determined when the parameter of convection current is encoded color component number information and color component used in bit number information；
In the present embodiment, it may be determined that bit_depth_luma_minus8 and bit_depth_chroma_minus8 in the chroma_format_idc and seq_parameter_set_rbsp () of SPS；It specifically can be as described in existing standard.Further, it is also possible to monochrome_palette_flag is determined when the parameter of convection current is encoded, luma_bit_depth_entry_minus8, chroma_bit_depth_entry_minus8.
Step 302, bit number information coding used in the number information and color component when the parameter of convection current is encoded by color component is into the corresponding SPS of stream；
It in the present embodiment, can be by the bit_depth_luma_minus8 and bit_depth_chroma_minus8 progress encoding abit stream in the chroma_format_idc of SPS and seq_parameter_set_rbsp ()；It specifically can be as described in existing standard.Further, it is also possible to which luma_bit_depth_entry_minus8, chroma_bit_depth_entry_minus8 is encoded in SPS by monochrome_palette_flag.
Table 5 diagrammatically illustrates a part of grammer of the SPS of present embodiment.Such as the number information of color component and the relevant information of bit-depth are increased in SPS.
Table 5
Step 303, the not PPS corresponding to the number information coding to picture frame by color component when the parameter to picture frame encodes, and not by PPS corresponding to bit number information coding to picture frame used in color component.
Table 6 diagrammatically illustrates a part of grammer of the PPS of present embodiment.Such as the number information of color component and the relevant information of bit-depth are deleted in PPS.
Table 6
It is assumed that a SPS corresponds to N number of PPS, if assuming that SPS needs SPS_org bit in coding, N number of PPS is respectively necessary for PPS_org1, PPS_org2 ... PPS_orgN bit using existing standard；The bit-depth of luminance component and chromatic component is 8bit.
For using most short bit sequence, SPS and PPS need the bit of following quantity to be encoded altogether:
Total_org=SPS_org+PPS_org1+PPS_org2+ ...+PPS_orgN.
And after using coding mode as shown in table 5 and table 6, SPS and PPS need the bit of following quantity to be encoded altogether:
Total_new=SPS_org+3+PPS_org1-3+PPS_org2-3+ ...+PPS_orgN-3=Total_org+3-3*N.
The embodiment of the present invention can not only reduce redundancy as a result, further decrease the bit cost of coding, and can optimize the syntactic structure of HEVC.
It is worth noting that, Fig. 3 only diagrammatically illustrates the case where present embodiment, however, the present invention is not limited thereto.The step of executing sequence, other can also be increased of each step can be changed according to the actual situation, or omit or merge one or more of steps.In addition, the relevant technologies can be referred to about specifically how to carry out the contents such as encoding abit stream.
It as can be seen from the above embodiments, can not will be in PPS corresponding to bit number information coding to picture frame used in color component when being encoded to picture frame；It is possible to further in PPS corresponding to the number information coding to picture frame not by color component.Thus redundancy can be not only reduced, the bit cost of coding is further decreased, and the syntactic structure of HEVC can be optimized.
Embodiment 2
The embodiment of the present invention provides a kind of picture coding device, and corresponding to the image encoding method in embodiment 1, identical content is repeated no more.
Fig. 4 is a schematic diagram of the picture coding device of the embodiment of the present invention, as shown in figure 4, picture coding device 400 includes:
Information determination unit 401, determine color component number information and color component used in bit number information；
Coding unit 402, when the parameter to picture frame encodes not by PPS corresponding to bit number information coding to picture frame used in color component.
It is worth noting that, Fig. 4 only diagrammatically illustrates part related to the embodiment of the present invention in picture coding device Unit, however, the present invention is not limited thereto.Other units (such as the unit etc. for determining palette) about image coding can refer to the prior art, and details are not described herein again.
In one embodiment, coding unit 402 can be also used for: not PPS corresponding to the number information coding to described image frame by color component.
In another embodiment, coding unit 402 can be also used for: when the parameter to the stream where picture frame encodes, SPS corresponding to bit number information coding to the stream used in the number information and color component by color component.
In another embodiment, coding unit 402 can be also used for: PPS corresponding to the number information coding to picture frame by color component.
In the present embodiment, the number information of color component can be expressed as monochrome_palette_flag；
In the case where color component is luminance component, bit number information used in color component can be expressed as luma_bit_depth_entry_minus8；In the case where color component includes luminance component and chromatic component, bit number information used in color component can be expressed as luma_bit_depth_entry_minus8 and chroma_bit_depth_entry_minus8.
The embodiment of the present invention also provides a kind of image encoder, including picture coding device as described above 400.
Fig. 5 is a composition schematic diagram of the image encoder of the embodiment of the present invention.As shown in figure 5, image encoder 500 may include: central processing unit (CPU) 100 and memory 110；Memory 110 is coupled to central processing unit 100.Wherein the memory 110 can store various data；The program of information processing is additionally stored, and executes the program under the control of central processing unit 100.
In one embodiment, the function of picture coding device 400 can be integrated into central processing unit 100.Wherein, central processing unit 100, which can be configured as, realizes image encoding method as described in Example 1.
In another embodiment, picture coding device 400 can be with central processing unit separate configuration, such as the chip connecting with central processing unit 100 can be configured by picture coding device 400, the function of picture coding device 400 is realized by the control of central processing unit.
In addition, as shown in figure 5, image encoder 500 can also include: input-output unit 120 and display unit 130 etc.；Wherein, similarly to the prior art, details are not described herein again for the function of above-mentioned component.It is worth noting that, image encoder 500 is also not necessary to include all components shown in Fig. 5；In addition, image encoder 500 can also include the component being not shown in Fig. 5, the prior art can be referred to.
As can be seen from the above embodiments, bit number used in color component can not be believed when being encoded to picture frame Breath is encoded in PPS corresponding to picture frame；It is possible to further in PPS corresponding to the number information coding to picture frame not by color component.Redundancy can be not only reduced as a result, further decreases the bit cost of coding, and can optimize the syntactic structure of HEVC.
Embodiment 3
The embodiment of the present invention provides a kind of image processing equipment, and it additionally may include corresponding image decoder that described image processing equipment, which includes: image encoder as described in Example 2,.Content identical with Examples 1 and 2 of the embodiment of the present invention repeats no more.
Fig. 6 is a schematic diagram of the image processing equipment of the embodiment of the present invention, as shown in fig. 6, image processing equipment 600 includes:
Image encoder 601, determine color component number information and color component used in bit number information；And when the parameter to picture frame encodes not by PPS corresponding to bit number information coding to described image frame used in color component；And/or
Image decoder 602 determines bit number information used in color component according to SPS corresponding to the stream where described image frame, and is decoded to described image frame.
In one embodiment, image encoder 601 can not also PPS corresponding to the number information coding to described image frame by color component；And image decoder 602 can the SPS according to corresponding to the stream where picture frame determine the number information of color component.
In another embodiment, image encoder 601 can be when the parameter to the stream where picture frame encodes, SPS corresponding to bit number information coding to the stream used in the number information and color component by color component.
In another embodiment, image encoder 601 can also PPS corresponding to the number information coding to described image frame by color component.
In the present embodiment, the composition of image encoder 601 and/or image decoder 602 can refer to Fig. 5；The framework of Memory can be added to realize using CPU.Image encoding method described in embodiment 1 may be implemented in image encoder 601, and picture decoding method corresponding with the image encoding method of embodiment 1 may be implemented in image decoder 602.
The embodiment of the present invention also provides a kind of computer-readable program, wherein when executing described program in image processing equipment, described program makes computer execute image encoding method as described in Example 1 and/or corresponding picture decoding method in described image processing equipment.
The embodiment of the present invention also provides a kind of storage medium for being stored with computer-readable program, wherein the computer-readable program makes computer execute image encoding method as described in Example 1 and/or corresponding picture decoding method in image processing equipment.
The device and method more than present invention can be by hardware realization, can also be by combination of hardware software realization.The present invention relates to such computer-readable programs, when the program is performed by logical block, the logical block can be made to realize devices described above or component parts, or the logical block is made to realize various method or steps described above.The invention further relates to the storage mediums for storing procedure above, such as hard disk, disk, CD, DVD, flash memory.
For one or more combinations of one or more of function box described in attached drawing and/or function box, it can be implemented as general processor for executing function described herein, digital signal processor (DSP), specific integrated circuit (ASIC), field programmable gate array (FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware components or it is any appropriately combined.One or more combinations of one or more of function box for attached drawing description and/or function box, it is also implemented as calculating the combination of equipment, for example, the combination of DSP and microprocessor, multi-microprocessor, the one or more microprocessors or any other this configuration combined with DSP communication.
Combining specific embodiment above, invention has been described, it will be appreciated by those skilled in the art that these descriptions are all exemplary, it is not limiting the scope of the invention.Those skilled in the art can make various variants and modifications to the present invention with spirit according to the present invention and principle, these variants and modifications are also within the scope of the invention.

Claims (14)

  1. A kind of image encoding method, described image coding method include:
    Determine color component number information and color component used in bit number information；And
    When the parameter to picture frame encodes not by image parameters collection corresponding to bit number information coding to described image frame used in the color component.
  2. Image encoding method according to claim 1, wherein the method also includes:
    Not image parameters collection corresponding to the number information coding to described image frame by the color component.
  3. Image encoding method according to claim 2, wherein the method also includes:
    When the parameter to the stream where described image frame encodes, by sequence parameter set corresponding to bit number information coding to the stream used in the number information of the color component and the color component.
  4. Image encoding method according to claim 1, wherein the method also includes:
    Image parameters collection corresponding to number information coding to described image frame by the color component.
  5. Image encoding method according to claim 1, wherein the number information of the color component is expressed as monochrome_palette_flag；
    In the case where the color component is luminance component, bit number information used in the color component is expressed as luma_bit_depth_entry_minus8；In the case where the color component includes luminance component and chromatic component, bit number information used in the color component is expressed as luma_bit_depth_entry_minus8 and chroma_bit_depth_entry_minus8.
  6. A kind of picture coding device, described image code device include:
    Information determination unit, determine color component number information and color component used in bit number information；
    Coding unit, when the parameter to picture frame encodes not by image parameters collection corresponding to bit number information coding to described image frame used in the color component.
  7. Picture coding device according to claim 6, wherein the coding unit is also used to: not image parameters collection corresponding to the number information coding to described image frame by the color component.
  8. Picture coding device according to claim 7, wherein, the coding unit is also used to: when the parameter to the stream where described image frame encodes, by sequence parameter set corresponding to bit number information coding to the stream used in the number information of the color component and the color component.
  9. Picture coding device according to claim 6, wherein the coding unit is also used to: will be described Image parameters collection corresponding to the number information coding to described image frame of color component.
  10. Picture coding device according to claim 6, wherein the number information of the color component is expressed as monochrome_palette_flag；
    In the case where the color component is luminance component, bit number information used in the color component is expressed as luma_bit_depth_entry_minus8；In the case where the color component includes luminance component and chromatic component, bit number information used in the color component is expressed as luma_bit_depth_entry_minus8 and chroma_bit_depth_entry_minus8.
  11. A kind of image processing equipment, described image processing equipment include:
    Image encoder, determine color component number information and color component used in bit number information；And when the parameter to picture frame encodes not by image parameters collection corresponding to bit number information coding to described image frame used in the color component；And/or
    Image decoder, according to sequence parameter set corresponding to the stream where described image frame determine the color component used in bit number information, and described image frame is decoded.
  12. Image processing equipment according to claim 11, wherein described image encoder not image parameters collection corresponding to the number information coding to described image frame by the color component；And
    Described image decoder sequence parameter set according to corresponding to the stream where described image frame determines the number information of the color component.
  13. Picture coding device according to claim 12, wherein, described image encoder is when the parameter to the stream where described image frame encodes, by sequence parameter set corresponding to bit number information coding to the stream used in the number information of the color component and the color component.
  14. Picture coding device according to claim 11, wherein image parameters collection corresponding to number information coding to described image frame of the described image encoder by the color component.
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US20220159241A1 (en) 2019-07-29 2022-05-19 Beijing Bytedance Network Technology Co., Ltd. Palette mode coding in prediction process
US11611753B2 (en) 2019-07-20 2023-03-21 Beijing Bytedance Network Technology Co., Ltd. Quantization process for palette mode
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US11677953B2 (en) 2019-02-24 2023-06-13 Beijing Bytedance Network Technology Co., Ltd. Independent coding of palette mode usage indication
US12132884B2 (en) 2019-07-29 2024-10-29 Beijing Bytedance Network Technology Co., Ltd Palette mode coding in prediction process

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