# US 5,703,967 A · Color image transmitting method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,703,967 A - Document ID: US5703967A - Status: Granted - Kind: A - Application number: 08/763,632 - Filed: 1996-12-04 - Granted: 1997-12-30 - Earliest claimed: 1989-12-29 - Assignees: Canon Kabushiki Kaisha - Inventors: Makoto Takaoka - Web page: https://patentgrep.com/patent/US5703967A ## CPC - H04N 1/41: Bandwidth or redundancy reduction (by scanning H04N1/17 {; methods or arrangements for coding, decoding, compressing or decompressing digital video signals H04N19/00}) - H04N 1/642: {Adapting to different types of images, e.g. characters, graphs, black and white image portions} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A color image transmitting method for transmitting a color image composed of a color image portion and a binary image portion is disclosed. Data about the color image portion and data about the binary portion are separated from each other by the positional data so as properly to be compressed or encoded respectively. The data about the color image portion, data about the binary image portion and positional data about one or both of the two image portions are successively transmitted so that the color image can efficiently be transmitted. ## Claims ### Claim 1 An image transmitting method for transmitting an original image composed of a multi-level image portion having multiple levels and a binary-level image portion having binary levels, comprising steps of: manually designating a portion of the original image corresponding to the multi-level image portion; replacing the designated portion designated by said designating step with a flat image portion having one of the binary levels to create a created image which is composed of the flat image portion and the other portion than the designated portion and has the same size as the original image; encoding the created image to generate first coded data; encoding the designated portion to generate second coded data; generating positional data which indicates a position of the designated portion in the original image; and sequentially transmitting the first coded data, the second coded data and the positional data. ### Claim 2 (depends on 1) An image transmitting method according to claim 1, wherein the positional data is transmitted before the first and second coded data. ### Claim 3 (depends on 1) An image transmitting method according to claim 1, wherein the second coded data is encoded by using a method using an orthogonal transformation. ### Claim 4 (depends on 3) An image transmitting method according to claim 3, wherein the first coded data is encoded by using an arithmetic-coded method. ### Claim 5 (depends on 3) An image transmitting method according to claim 3, wherein the first coded data is encoded by an MMR method and the second coded data is encoded by an ADCT method. ### Claim 6 (depends on 1) An image transmitting method according to claim 1, wherein the created image corresponds to a low density image. ### Claim 7 (depends on 1) An image transmitting method according to claim 1, wherein the positional data is vector data. ### Claim 8 (depends on 1) An image transmitting method according to claim 1, wherein the positional data is expressed by means of a page description language. ### Claim 9 An image transmitting method for transmitting an original image composed of a first image portion having a color image and a second image portion having a monochromatic image, comprising the steps of: manually designating the first image portion; replacing the first image portion manually designated by said designating step with a flat image portion having a monochromatic image to create a created image which is composed of the flat image portion and the second image portion and has the same size as the original image; encoding the created image to generate first coded data; encoding the first image portion to generate second coded data; generating positional data which indicates a position of the first image portion in the original image; and sequentially transmitting the first coded data, the second coded data and the positional data. ### Claim 10 (depends on 9) An image transmitting method according to claim 9, wherein the positional data is transmitted before the first and second coded data. ### Claim 11 (depends on 9) An image transmitting method according to claim 9, wherein the second coded data is encoded by using an ADCT method. ### Claim 12 (depends on 11) An image transmitting method according to claim 11, wherein the first coded data is encoded by using an MMR method. ### Claim 13 An image transmitting method for transmitting an original image composed of a multi-level image portion having multiple levels and a binary-level image portion having binary levels, comprising the steps of: at a transmitting side; manually designating a portion of the original image corresponding to the multi-level image portion; replacing the designated portion designated by said designating step with a flat image portion having one of the binary levels to create a created image which is composed of the flat image portion and the other portion than the designated portion and has the same size as the original image; compressing the created image to generate first compressed data; compressing the designated portion to generate second compressed data; generating positional data which indicates a position of the designated portion in the original image; and sequentially transmitting the first compressed data, the second compressed data and the positional data; at a receiving side; sequentially receiving the first compressed data, the second compressed data and the positional data; expanding the first compressed data to restore the created image; expanding the second compressed data to restore the designated portion; and setting the designated portion into the created image to restore the original image. ### Claim 14 An image transmitting apparatus for transmitting an original image composed of a multi-level image having multiple levels and a binary image having binary levels, comprising: manually operable means for designating a multi-level portion having the multi-level image; replacing means for replacing the multi-level portion with a flat image portion having one of the binary levels to create a created image which comprises the flat image portion and the binary image of the original and has the same size as the original image; encoding means for encoding the multi-level image and the created image by using different coding schemes; and transmitting means for transmitting encoded data encoded by said encoding means. ### Claim 15 (depends on 14) An image transmitting apparatus according to claim 14, wherein said encoding means encodes the multi-level portion by using an orthogonal transformation. ### Claim 16 (depends on 15) An image transmitting apparatus according to claim 15, wherein said encoding means encodes the multi-level portion by using an ADCT method. ### Claim 17 (depends on 15) An image transmitting apparatus according to claim 15, wherein said encoding means encodes the created image by using an MMR method. ### Claim 18 An image transmitting method for transmitting an original image composed of a multi-level image having multiple levels and a binary image having binary levels, comprising the steps of: manually designating a multi-level portion having the multi-level image; replacing the multi-level portion with a flat image portion having one of the binary levels to create a created image which comprises the flat image portion and the binary image of the original and has the same size as the original image; encoding the multi-level image and the created image by using different coding schemes; and transmitting encoded data encoded by said encoding means. ### Claim 19 An image transmitting apparatus for transmitting an original image composed of a multi-level image having multiple levels and a binary image having binary levels, comprising: designating means for designating a multi-level portion having the multi-level image; replacing means for replacing the multi-level portion with a flat image portion having one of the binary levels to create a created image which comprises the flat image portion and the binary image of the original and has the same size as the original image; encoding means for encoding the multi-level image and the created image in a unit of an area extending in a predetermined direction by using different coding schemes; and transmitting means for transmitting encoded data encoded by said encoding means. ### Claim 20 (depends on 19) An image transmitting apparatus according to claim 19, wherein said encoding means encodes the multi-level portion by using an orthogonal transformation. ### Claim 21 (depends on 20) An image transmitting apparatus according to claim 20, wherein said encoding means encodes the multi-level portion by using an ADCT method. ### Claim 22 (depends on 20) An image transmitting apparatus according to claim 20, wherein said encoding means encodes the created image by using an MMR method. ### Claim 23 (depends on 19) An image transmitting apparatus according to claim 19, wherein the predetermined direction corresponds to a direction in which the original image has been scanned. ### Claim 24 (depends on 23) An image transmitting apparatus according to claim 23, wherein the area corresponds to one line of the original image. ### Claim 25 (depends on 19) An image transmitting apparatus according to claim 19, wherein said designating means includes a manually operable means for designating position on the original image. ### Claim 26 An image encoding method for encoding an original image composed of a multi-level image having multiple levels and a binary image having binary levels, comprising the step of: designating a multi-level portion having the multi-level image; replacing the multi-level portion with a flat image portion having one of the binary levels to create a created image which comprises the flat image portion and the binary image of the original and has the same size as the original image; and encoding the multi-level image and the created image in a unit of an area extending in a predetermined direction by using different coding schemes. ### Claim 27 (depends on 26) An image encoding method according to claim 26, wherein the multi-level portion is encoded by using an orthogonal transformation. ### Claim 28 (depends on 27) An image encoding method according to claim 27, wherein the multi-level portion is encoded by using an ADCT method. ### Claim 29 (depends on 27) An image encoding method according to claim 27, wherein the created image is encoded by using an MMR method.