Color image transmitting method
AssigneeCanon Kabushiki Kaisha
InventorMakoto Takaoka
Life of this patent
Estimating the term…
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.
Claims29
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.
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.
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.
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.
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.
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.
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.
Dependencies are inferred from the claim text.