US5162923A
Expired / Lapsed
US
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Method and apparatus for encoding frequency components of image information
Assignee: Canon Inc
•
Filing: 1989-02-21
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Granted: 1992-11-10
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Expires: 2009-02-21
Abstract
Abstract An image encoding method, and an apparatus therefor, enabling rapid comprehension of the outline of the entire image promptly, at the decoding of the encoded image information, and also an image encoding method, and an apparatus therefor, capable of efficient encoding adapted for the state of the image to be encoded. Image information is divided into plural block, each consisting of plural pixels, the frequency of the image in each block is analyzed, the frequency components of the image in each block are separated into plural bands, and the frequency components contained in each of said plural bands are encoded.
Inventors
- 👤 Tadashi Yoshida
- 👤 Naoto Kawamura
- 👤 Yoshihiro Ishida
- 👤 Yasuji Hirabayashi
- 👤 Mitsuru Maeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:25
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/41
Claims Analysis
Total Claims: 113
Claim 1
Independent Claim
58 words
An image encoding method comprising the steps of: dividing image information into plural blocks, each consisting of plural pixels; analyzing image frequency in each block; separating frequency components of the image in each block into plural bands; and encoding the frequency components contained in said plural bands to mutually different predetermined length of codes on each band, respectively.
Claim 2
Dependent Claim
58 words
An image encoding method comprising the steps of: dividing image information into plural blocks, each consisting of plural pixels; analyzing image frequency in each block; separating frequency components of the image in each block into plural bands; and encoding the frequency components contained in said plural bands to mutually different predetermined length of codes on each band, respectively.
Claim 3
Dependent Claim
23 words
A method according to claim 1, wherein said separating step performs different separating operations in accordance with the image frequency in each block.
Claim 4
Dependent Claim
20 words
A method according to claim 1, wherein said analyzing step performs an orthogonal transformation of the image in each block.
Claim 5
Dependent Claim
23 words
A method according to claim 1, wherein said encoding step performs different encoding operations in accordance with the image frequency in each block.
Claim 6
Dependent Claim
30 words
A method according to claim 4, wherein said encoding step varies the number of bands of encoded data representing each block, in accordance with the image frequency in each block.
Claim 7
Dependent Claim
24 words
A method according to claim 1, further comprising a step of: transmitting encoded data, representing the image information of a frame, for each band.
Claim 8
Dependent Claim
28 words
A method according to claim 6, wherein said transmitting step starts transmission from encoded data of a band selected in accordance with the image frequency in each block.
Claim 9
Dependent Claim
65 words
An image encoding apparatus comprising: analyzing means for dividing image information into plural blocks, each consisting of plural pixels, and analyzing image frequency in each block; and encoding means for separating frequency components of the image frequency in each block into plural bands, and respectively encoding the frequency components contained in said plural bands to mutually different predetermined length of codes on each band, respectively.
Claim 10
Dependent Claim
65 words
An image encoding apparatus comprising: analyzing means for dividing image information into plural blocks, each consisting of plural pixels, and analyzing image frequency in each block; and encoding means for separating frequency components of the image frequency in each block into plural bands, and respectively encoding the frequency components contained in said plural bands to mutually different predetermined length of codes on each band, respectively.
Claim 11
Dependent Claim
32 words
An apparatus according to claim 8, wherein said encoding means is adapted to separate the image information into plural bands in different manners in accordance with the image frequency in each block.
Claim 12
Dependent Claim
26 words
An apparatus according to claim 8, wherein said analyzing means is adapted to effect frequency analysis by an orthogonal transformation of the image in each block.
Claim 13
Dependent Claim
26 words
An apparatus according to claim 8, wherein said encoding means is adapted to perform different encoding operations, in accordance with the image frequency in each block.
Claim 14
Dependent Claim
34 words
An apparatus according to claim 11, wherein said encoding means is adapted to vary the number of bands of the encoded data representing each block, in accordance with the image frequency in each block.
Claim 15
Dependent Claim
24 words
An apparatus according to claim 8, further comprising transmitting means for transmitting, for each band, encoded data representing the image information of a frame.
Claim 16
Dependent Claim
32 words
An apparatus according to claim 13, wherein said transmitting means is adapted to effect transmission starting from encoded data of a band selected in accordance with the image frequency in each block.
Claim 17
Dependent Claim
74 words
An image encoding method comprising the steps of: dividing image information into plural blocks, each consisting of plural pixels; analyzing image frequency in each block; classifying each block into one of plural classes in accordance with the image frequency therein; separating frequency components of the image frequency in each block into plural bands in accordance with the class classified in said classifying step; and encoding the frequency components contained in said plural bands, respectively.
Claim 18
Dependent Claim
74 words
An image encoding method comprising the steps of: dividing image information into plural blocks, each consisting of plural pixels; analyzing image frequency in each block; classifying each block into one of plural classes in accordance with the image frequency therein; separating frequency components of the image frequency in each block into plural bands in accordance with the class classified in said classifying step; and encoding the frequency components contained in said plural bands, respectively.
Claim 19
Dependent Claim
31 words
A method according to claim 15, wherein said encoding step is adapted to vary the number of encoded data representing each block, in accordance with the class classified by the classifying.
Claim 20
Dependent Claim
23 words
A method according to claim 15, wherein said analyzing step includes performance of an orthogonal transformation of the image frequency in each block.
Claim 21
Dependent Claim
29 words
A method according to claim 15, wherein said encoding step is adapted to encode the image in each block into plural encoded data respectively corresponding to different frequency components.
Claim 22
Dependent Claim
29 words
A method according to claim 18, further comprising the step of transmitting the encoded data, representing the image information of a frame, on a serial basis in each band.
Claim 23
Dependent Claim
82 words
An image encoding apparatus comprising: analyzing means for dividing image information into plural blocks, each consisting of plural pixels, and analyzing image frequency in each block; classifying means for classifying each block into one of plural classes in accordance with the image frequency therein; and encoding means for separating frequency components of the image frequency in each block into plural bands in accordance with the class classified by said classifying means, and encoding the frequency components contained in said plural bands, respectively.
Claim 24
Dependent Claim
82 words
An image encoding apparatus comprising: analyzing means for dividing image information into plural blocks, each consisting of plural pixels, and analyzing image frequency in each block; classifying means for classifying each block into one of plural classes in accordance with the image frequency therein; and encoding means for separating frequency components of the image frequency in each block into plural bands in accordance with the class classified by said classifying means, and encoding the frequency components contained in said plural bands, respectively.
Claim 25
Dependent Claim
32 words
An apparatus according to claim 20, wherein said encoding means is adapted to vary the number of encoded data representing each block, in accordance with said class classified by the classifying means.
Claim 26
Dependent Claim
27 words
An apparatus according to claim 20, wherein said analyzing means is adapted to effect frequency analysis by an orthogonal transformation of the image frequency in each block.
Claim 27
Dependent Claim
29 words
An apparatus according to claim 20, wherein said encoding means is adapted to encode the image frequency in each block into plural encoded data corresponding to different frequency components.
Claim 28
Dependent Claim
29 words
An apparatus according to claim 23, further comprising transmitting means for transmitting the encoded data, representing the image information of a frame, on a serial basis in each band.
Claim 29
Dependent Claim
85 words
An image encoding method comprising the steps of: dividing image information into plural blocks, each block having a fixed size and consisting of plural pixels; discriminating a presence/absence of an edge portion of the image in each block; classifying each block into one of plural classes in accordance with the presence/absence of an edge portion; separating the image information in each block into plural sub-blocks in accordance with the class classified in said classifying step; and encoding the image contained in said plural sub-blocks, respectively.
Claim 30
Dependent Claim
85 words
An image encoding method comprising the steps of: dividing image information into plural blocks, each block having a fixed size and consisting of plural pixels; discriminating a presence/absence of an edge portion of the image in each block; classifying each block into one of plural classes in accordance with the presence/absence of an edge portion; separating the image information in each block into plural sub-blocks in accordance with the class classified in said classifying step; and encoding the image contained in said plural sub-blocks, respectively.
Claim 31
Dependent Claim
27 words
A method according to claim 25, wherein, in said encoding step, the number of the encoded data representing plural sub-blocks is varied, in accordance with the class.
Claim 32
Dependent Claim
29 words
A method according to claim 25, wherein, in said discriminating step, edge information in the image in each block is discriminated, by analyzing the frequency of the image information.
Claim 33
Dependent Claim
25 words
A method according to claim 27, wherein, in said discriminating step, frequency analysis of the image in each block is effected by an orthogonal transformation.
Claim 34
Dependent Claim
28 words
A method according to claim 25, wherein, in said encoding step, the image in plural sub-blocks is encoded into plural encoded data respectively corresponding to different frequency components.
Claim 35
Dependent Claim
95 words
An image encoding apparatus comprising: discriminating means for dividing image information into plural blocks, each block having a fixed size and consisting of plural pixels, and discriminating a presence/absence of an edge portion of the image in each block; classifying means for classifying each block into one of plural classes in accordance with the presence/absence of an edge portion; and encoding means for separating the image information in each block into plural sub-blocks in accordance with the class classified by said classifying means, and for encoding the image information contained in said plural sub-blocks, respectively.
Claim 36
Dependent Claim
95 words
An image encoding apparatus comprising: discriminating means for dividing image information into plural blocks, each block having a fixed size and consisting of plural pixels, and discriminating a presence/absence of an edge portion of the image in each block; classifying means for classifying each block into one of plural classes in accordance with the presence/absence of an edge portion; and encoding means for separating the image information in each block into plural sub-blocks in accordance with the class classified by said classifying means, and for encoding the image information contained in said plural sub-blocks, respectively.
Claim 37
Dependent Claim
27 words
An apparatus according to claim 30, wherein said encoding means is adapted to vary the number of encoded data representing plural sub-blocks, in accordance with said class.
Claim 38
Dependent Claim
26 words
An apparatus according to claim 30, wherein said discriminating means is adapted to discriminate the edge information, by frequency analysis of the image in each block.
Claim 39
Dependent Claim
26 words
An apparatus according to claim 32, wherein said discriminating means is adapted to effect frequency analysis by an orthogonal transformation of the image in each block.
Claim 40
Dependent Claim
28 words
An apparatus according to claim 30, wherein said encoding means is adapted to encode the image in each block into plural encoded data corresponding to different frequency components.
Claim 41
Dependent Claim
60 words
An image encoding method comprising the steps of: dividing image information into plural blocks, each consisting of plural pixels; separating frequency components of the image in each block into plural bands; encoding the frequency components contained in said plural bands, respectively; and transmitting, on a serial basis in each band, the encoded data representing the image information of a frame.
Claim 42
Dependent Claim
60 words
An image encoding method comprising the steps of: dividing image information into plural blocks, each consisting of plural pixels; separating frequency components of the image in each block into plural bands; encoding the frequency components contained in said plural bands, respectively; and transmitting, on a serial basis in each band, the encoded data representing the image information of a frame.
Claim 43
Dependent Claim
25 words
A method according to claim 35, wherein, in said separating step, the separating operation is performed differently in accordance with image frequency in each block.
Claim 44
Dependent Claim
21 words
A method according to claim 35, wherein said separating step further comprises the step of analyzing image frequency in each block.
Claim 45
Dependent Claim
22 words
A method according to claim 37, wherein, in said analyzing step, an orthogonal transformation of the image in each block is performed.
Claim 46
Dependent Claim
23 words
A method according to claim 35, wherein, in said encoding step, encoding is performed differently in accordance with image frequency in each block.
Claim 47
Dependent Claim
33 words
A method according to claim 39, wherein, in said encoding step, the number of bands of the encoded data representing each block is varied, in accordance with the image frequency in each block.
Claim 48
Dependent Claim
29 words
A method according to claim 35, wherein, in said transmitting step, transmission is started from encoded data of a selected band in accordance with the image in each block.
Claim 49
Dependent Claim
74 words
An image encoding apparatus comprising: analyzing means for dividing image information into plural blocks, each consisting of plural pixels, and analyzing image frequency in each block; encoding means for separating frequency components of the image in each block into plural bands, and encoding the frequency components contained in said plural bands, respectively; and transmitting means for transmitting, on a serial basis in each band, the encoded data representing the image information of a frame.
Claim 50
Dependent Claim
74 words
An image encoding apparatus comprising: analyzing means for dividing image information into plural blocks, each consisting of plural pixels, and analyzing image frequency in each block; encoding means for separating frequency components of the image in each block into plural bands, and encoding the frequency components contained in said plural bands, respectively; and transmitting means for transmitting, on a serial basis in each band, the encoded data representing the image information of a frame.
Claim 51
Dependent Claim
32 words
An apparatus according to claim 42, wherein said encoding means is adapted to separate the image information into plural bands in different manners in accordance with the image frequency in each block.
Claim 52
Dependent Claim
26 words
An apparatus according to claim 42, wherein said analyzing means is adapted to effect frequency analysis by an orthogonal transformation of the image in each block.
Claim 53
Dependent Claim
26 words
An apparatus according to claim 42, wherein said encoding means is adapted to perform different encoding operations, in accordance with the image frequency in each block.
Claim 54
Dependent Claim
34 words
An apparatus according to claim 45, wherein said encoding means is adapted to vary the number of bands of the encoded data representing each block, in accordance with the image frequency in each block.
Claim 55
Dependent Claim
31 words
An apparatus according to claim 42, wherein said transmitting means is adapted to effect transmission starting from encoded data of a band selected in accordance with the image in each block.
Claim 56
Dependent Claim
67 words
An image encoding method comprising the steps of: dividing image information into plural blocks, each consisting of plural pixels; separating frequency components of the image in each block into plural bands; encoding the frequency components contained in each of said plural bands; and transmitting the image information of a frame, starting from the encoded data of a band selected in accordance with the image in each block.
Claim 57
Dependent Claim
67 words
An image encoding method comprising the steps of: dividing image information into plural blocks, each consisting of plural pixels; separating frequency components of the image in each block into plural bands; encoding the frequency components contained in each of said plural bands; and transmitting the image information of a frame, starting from the encoded data of a band selected in accordance with the image in each block.
Claim 58
Dependent Claim
25 words
A method according to claim 48, wherein, in said separating step, the separation operation is performed differently in accordance with image frequency in each block.
Claim 59
Dependent Claim
21 words
A method according to claim 48, wherein said separating step further comprises the step of analyzing image frequency in each block.
Claim 60
Dependent Claim
22 words
A method according to claim 50, wherein, in said analyzing step, an orthogonal transformation of the image in each block is performed.
Claim 61
Dependent Claim
23 words
A method according to claim 48, wherein, in said encoding step, encoding is performed differently in accordance with image frequency in each block.
Claim 62
Dependent Claim
33 words
A method according to claim 52, wherein, in said encoding step, the number of bands of the encoded data representing each block is varied, in accordance with the image frequency in each block.
Claim 63
Dependent Claim
81 words
An image encoding apparatus comprising: analyzing means for dividing image information into plural blocks, each consisting of plural pixels, and analyzing image frequency in each block; encoding means for separating frequency components of the image in each block into plural bands, and encoding the frequency components contained in each of said plural bands; and transmitting means for transmitting the image information of a frame starting from the encoded data of a band selected in accordance with the image in each block.
Claim 64
Dependent Claim
81 words
An image encoding apparatus comprising: analyzing means for dividing image information into plural blocks, each consisting of plural pixels, and analyzing image frequency in each block; encoding means for separating frequency components of the image in each block into plural bands, and encoding the frequency components contained in each of said plural bands; and transmitting means for transmitting the image information of a frame starting from the encoded data of a band selected in accordance with the image in each block.
Claim 65
Dependent Claim
32 words
An apparatus according to claim 54, wherein said encoding means is adapted to separate the image information into plural bands in different manners in accordance with the image frequency in each block.
Claim 66
Dependent Claim
26 words
An apparatus according to claim 54, wherein said analyzing means is adapted to effect frequency analysis by an orthogonal transformation of the image in each block.
Claim 67
Dependent Claim
26 words
An apparatus according to claim 54, wherein said encoding means is adapted to perform different encoding operations, in accordance with the image frequency in each block.
Claim 68
Dependent Claim
34 words
An apparatus according to claim 57, wherein said encoding means is adapted to vary the number of bands of the encoded data representing each block, in accordance with the image frequency in each block.
Claim 69
Dependent Claim
87 words
An image encoding method comprising the steps of: dividing image information into plural blocks, each block having a fixed size and consisting of plural pixels; transforming the plural pixels into a plurality of frequency components; extracting first and second set of frequency components from the frequency components of each block; encoding each of said first and second sets of frequency components; adding a parameter relating to said first or second set of frequency components to the encoded data of said first or second set of frequency components.
Claim 70
Dependent Claim
87 words
An image encoding method comprising the steps of: dividing image information into plural blocks, each block having a fixed size and consisting of plural pixels; transforming the plural pixels into a plurality of frequency components; extracting first and second set of frequency components from the frequency components of each block; encoding each of said first and second sets of frequency components; adding a parameter relating to said first or second set of frequency components to the encoded data of said first or second set of frequency components.
Claim 71
Dependent Claim
24 words
A method according to claim 59, wherein, in said extracting step, frequency components of the image in each block are separated into plural sub-blocks.
Claim 72
Dependent Claim
18 words
A method according to claim 59, wherein, in said adding step, a parameter for image transformation is added.
Claim 73
Dependent Claim
21 words
A method according to claim 59, wherein said extracting step further comprises the step of analyzing image frequency in each block.
Claim 74
Dependent Claim
22 words
A method according to claim 62, wherein, in said transforming step, an orthogonal transformation of the image in each block is performed.
Claim 75
Dependent Claim
23 words
A method according to claim 59, wherein, in said encoding step, encoding is performed differently in accordance with image frequency in each block.
Claim 76
Dependent Claim
99 words
An image encoding apparatus comprising: dividing means for dividing image information into plural blocks, each block having a fixed size and consisting of plural pixels; transforming means for transforming the plural pixels into a plurality of frequency components; extracting means for extracting first and second sets of frequency components from the frequency components of each block; encoding means for encoding each of said first and second sets of frequency components; adding means for adding a parameter relating to said first or second set of frequency components to the encoded data of said first or second set of frequency components.
Claim 77
Dependent Claim
99 words
An image encoding apparatus comprising: dividing means for dividing image information into plural blocks, each block having a fixed size and consisting of plural pixels; transforming means for transforming the plural pixels into a plurality of frequency components; extracting means for extracting first and second sets of frequency components from the frequency components of each block; encoding means for encoding each of said first and second sets of frequency components; adding means for adding a parameter relating to said first or second set of frequency components to the encoded data of said first or second set of frequency components.
Claim 78
Dependent Claim
19 words
An apparatus according to claim 65, wherein said adding means is adapted to add a parameter for image transformation.
Claim 79
Dependent Claim
26 words
An apparatus according to claim 65, wherein said encoding means is adapted to encode the first and second set of frequency components by different methods, respectively.
Claim 80
Dependent Claim
26 words
An apparatus according to claim 65, wherein said transforming means is adapted to effect frequency analysis by an orthogonal transformation of the image in each block.
Claim 81
Dependent Claim
26 words
An apparatus according to claim 65, wherein said encoding means is adapted to perform different encoding operations, in accordance with the image frequency in each block.
Claim 82
Dependent Claim
63 words
The image decoding method comprising steps of: entering plural encoded data obtained by encoding image information of different frequency components; storing first image information obtained by decoding of the encoded data of a first frequency component; and adding second image information, obtained by decoding of the encoded data of a second frequency component, to said first image information in a real image space.
Claim 83
Dependent Claim
63 words
The image decoding method comprising steps of: entering plural encoded data obtained by encoding image information of different frequency components; storing first image information obtained by decoding of the encoded data of a first frequency component; and adding second image information, obtained by decoding of the encoded data of a second frequency component, to said first image information in a real image space.
Claim 84
Dependent Claim
23 words
A method according to claim 70, wherein, in said entering step, data encoded for plural blocks each consisting of plural pixels is entered.
Claim 85
Dependent Claim
21 words
A method according to claim 70, further comprising the step of displaying the first image information stored in said storing step.
Claim 86
Dependent Claim
20 words
A method according to claim 70, further comprising the step of storing the image information obtained in said adding step.
Claim 87
Dependent Claim
86 words
An image decoding apparatus comprising: input means for entering plural encoded data obtained by encoding image information for different frequency components; decoding means for decoding the encoded data to obtain decoded image data; memory means for storing the decoded image information; and adding means for adding first image information obtained by decoding the encoded data of a first frequency component and stored in said memory means, to second image information obtained by decoding the encoded data of a second frequency component, in a real image space.
Claim 88
Dependent Claim
86 words
An image decoding apparatus comprising: input means for entering plural encoded data obtained by encoding image information for different frequency components; decoding means for decoding the encoded data to obtain decoded image data; memory means for storing the decoded image information; and adding means for adding first image information obtained by decoding the encoded data of a first frequency component and stored in said memory means, to second image information obtained by decoding the encoded data of a second frequency component, in a real image space.
Claim 89
Dependent Claim
21 words
An apparatus according to claim 74, further comprising display means for displaying the first image information stored in said memory means.
Claim 90
Dependent Claim
25 words
An apparatus according to claim 74, wherein said memory means is further adapted to store the image information obtained by addition in said adding means.
Claim 91
Dependent Claim
88 words
An image encoding method comprising the steps of: dividing image information into plural blocks, each consisting of plural pixels; analyzing image frequency in each block; classifying each block into one of plural classes in accordance with a frequency of the image therein; separating frequency components of the image in each block into a band or bands the number of which is in accordance with the class classified in said classifying step; and encoding the frequency components contained in said band or bands separated in said separating step, respectively.
Claim 92
Dependent Claim
88 words
An image encoding method comprising the steps of: dividing image information into plural blocks, each consisting of plural pixels; analyzing image frequency in each block; classifying each block into one of plural classes in accordance with a frequency of the image therein; separating frequency components of the image in each block into a band or bands the number of which is in accordance with the class classified in said classifying step; and encoding the frequency components contained in said band or bands separated in said separating step, respectively.
Claim 93
Dependent Claim
27 words
An image encoding method according to claim 77, wherein, in said encoding step, the number of encoded data representing each block is varied in accordance with class.
Claim 94
Dependent Claim
23 words
An image encoding method according to claim 77, wherein said analyzing step includes performing an orthogonal transformation of the image in each block.
Claim 95
Dependent Claim
29 words
An image encoding method according to claim 77, wherein said encoding step includes encoding the image in each block into plural encoded data respectively corresponding to different frequency components.
Claim 96
Dependent Claim
28 words
An image encoding method according to claim 80, further comprising the step of transmitting on each frequency component the encoded data representing the image information of a frame.
Claim 97
Dependent Claim
93 words
An image encoding apparatus comprising: analyzing means for dividing image information into plural blocks, each consisting of plural pixels, and analyzing image frequency in each block; classifying for classifying each block into one of plural classes in accordance with the image frequency therein; separating means for separating frequency components of the image in each block into a band or bands the number of which is in accordance with the class classified by said classifying means; and encoding means encoding the frequency components contained in said band or bands separated by said separating means.
Claim 98
Dependent Claim
93 words
An image encoding apparatus comprising: analyzing means for dividing image information into plural blocks, each consisting of plural pixels, and analyzing image frequency in each block; classifying for classifying each block into one of plural classes in accordance with the image frequency therein; separating means for separating frequency components of the image in each block into a band or bands the number of which is in accordance with the class classified by said classifying means; and encoding means encoding the frequency components contained in said band or bands separated by said separating means.
Claim 99
Dependent Claim
28 words
An image encoding apparatus according to claim 82, wherein said encoding means is adapted to vary the number of encoded data representing each block in accordance with class.
Claim 100
Dependent Claim
28 words
An image encoding apparatus according to claim 82, wherein said analyzing means is adapted to effect frequency analysis by an orthogonal transformation of the image in each block.
Claim 101
Dependent Claim
31 words
An image encoding apparatus according to claim 82, wherein said encoding means is adapted to encode the image in each block into plural encoded data respectively corresponding to different frequency components.
Claim 102
Dependent Claim
28 words
An image encoding apparatus according to claim 82, further comprising transmitting means for transmitting on each frequency component the encoded data representing the image information of a frame.
Claim 103
Dependent Claim
152 words
An image encoding apparatus comprising: dividing means for dividing image data into plural blocks, each block having a fixed size and consisting of plural pixels; transformation means for performing an orthogonal transformation of the image data in said plural blocks and outputting plural frequency components; first encoding means for encoding a first frequency component among the plural frequency components and outputting first coded data; second encoding means for encoding a second frequency component, the frequency of which is higher than the first frequency component, and outputting second coded data; and transmission means for transmitting the first coded data of plural blocks of a picture and the second coded data of plural blocks of the picture; wherein said transmission means adds boundary information between the first coded data and the second coded data, and transmits the first coded data of plural blocks, the boundary information and the second coded data of plural blocks.
Claim 104
Dependent Claim
152 words
An image encoding apparatus comprising: dividing means for dividing image data into plural blocks, each block having a fixed size and consisting of plural pixels; transformation means for performing an orthogonal transformation of the image data in said plural blocks and outputting plural frequency components; first encoding means for encoding a first frequency component among the plural frequency components and outputting first coded data; second encoding means for encoding a second frequency component, the frequency of which is higher than the first frequency component, and outputting second coded data; and transmission means for transmitting the first coded data of plural blocks of a picture and the second coded data of plural blocks of the picture; wherein said transmission means adds boundary information between the first coded data and the second coded data, and transmits the first coded data of plural blocks, the boundary information and the second coded data of plural blocks.
Claim 105
Dependent Claim
29 words
An image encoding apparatus according to claim 87, wherein said transmission means is further adapted to transmit data representing image type of an image represented by the image data.
Claim 106
Dependent Claim
35 words
An image encoding apparatus according to claim 87, wherein said first and second encoding means is adapted to perform different encodings in accordance with a frequency of the image data transmitted by said transmission means.
Claim 107
Dependent Claim
21 words
An image encoding apparatus according to claim 89, wherein said boundary information represents an information for decoding the second coded data.
Claim 108
Dependent Claim
138 words
An image encoding method comprising the steps of: dividing image information into plural blocks, each block having a fixed size and consisting of plural pixels; transforming the image information into plural frequency components; encoding a first frequency component among the plural frequency components in a block and outputting first coded data; encoding a second frequency component, the frequency of which is higher than the first frequency component in the block, and outputting second coded data; repeating said transforming step and plural encoding steps for plural blocks; and transmitting the first coded data of plural blocks and the second coded data of plural blocks; wherein in said transmitting step, the first coded data of plural blocks, boundary information between the first and the second coded data and the second coded data of plural blocks, are transmitted in this order.
Claim 109
Dependent Claim
138 words
An image encoding method comprising the steps of: dividing image information into plural blocks, each block having a fixed size and consisting of plural pixels; transforming the image information into plural frequency components; encoding a first frequency component among the plural frequency components in a block and outputting first coded data; encoding a second frequency component, the frequency of which is higher than the first frequency component in the block, and outputting second coded data; repeating said transforming step and plural encoding steps for plural blocks; and transmitting the first coded data of plural blocks and the second coded data of plural blocks; wherein in said transmitting step, the first coded data of plural blocks, boundary information between the first and the second coded data and the second coded data of plural blocks, are transmitted in this order.
Claim 110
Dependent Claim
23 words
An image encoding method according to claim 91, wherein said transforming step includes performing an orthogonal transformation of an image in each block.
Claim 111
Dependent Claim
26 words
An image encoding method according to claim 91, wherein said encoding step includes performing different encoding operations in accordance with a frequency component in each block.
Claim 112
Dependent Claim
28 words
An image encoding method according to claim 91, wherein, in said encoding step, different encodings are performed in accordance with a frequency component transmitted in said transmitting step.
Claim 113
Dependent Claim
26 words
An image encoding method according to claim 94, wherein said encoding step includes performing different encodings in a code length in accordance with a frequency component.
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