Back to results
US 4,958,236 AGranted
Image processing method and apparatus therefor
AssigneeCanon Kabushiki Kaisha
InventorsNao Nagashima, Hiroyuki Ichikawa, Akihiro Katayama
Life of this patent
Estimating the term…
Abstract
In a method of reading an image by dividing it into plural areas and reading these divided areas in succession, continuity is given to the data of plural areas by conducting digitization in overlapping manner over the neighboring areas, in order to avoid formation of a streak at the boundary of the divided areas.
Claims70
An image processing apparatus comprising:
- reading means for reading an image by dividing the image into plural areas, and for providing image data;
- and
- process means for performing a quantization process on the image data obtained from said reading means to obtain record data to be used in a recording,
- wherein said process means performs, in the recording, a quantization process of the image data to give continuity to the plural areas read by said reading means.
1 more element
An image processing apparatus comprising:
- reading means for reading an image by dividing the image into plural areas, and for providing image data;
- process means for performing a quantization process on the image data obtained by said reading means to obtain record data to be used in a recording;
- and
- memory means for storing information of a jointing portion of the plural areas,
- wherein said process means performs the quantization process to obtain the record data from the information stored in said memory means and the image data at the jointing portion.
2 more elements
An image processing apparatus comprising:
- reading means for reading an image by dividing the image into plural areas, and for providing image data;
- and
- process means for performing a quantization process on the image data obtained from said reading means to obtain record data to be used in a recording;
- wherein said reading means reads the image data of an area neighboring an object area to be processed by said process means, in an overlapping manner, and
- wherein said process means performs the quantization process of the image data read by said reading means in the overlapping manner to obtain the record data.
2 more elements
An image processing apparatus comprising:
- reading means for reading an image by dividing the image into plural areas, and for providing image data;
- process means for performing a quantization process on the image data obtained from said reading means to obtain record data to be used in a recording;
- and
- memory means for storing information of a jointing portion of the plural areas,
- wherein said reading means reads the image data of an area neighboring an object area to be processed by said process means, in an overlapping manner, and
- wherein said process means performs the quantization process on the information stored in said memory means and the image data read by said reading means in the overlapping manner, into the record data.
3 more elements
An image processing apparatus comprising:
- reading means for reading an image by dividing the image into plural areas, and for providing image data;
- and
- process means for digitizing the image data from said reading means,
- wherein said process means is adapted, in digitizing of the image data, to give continuity to the plural areas read by said reading means, and
- wherein said process means is adapted to digitize the image data into binary data by an error dispersion method.
2 more elements
An image processing apparatus comprising:
- reading means for reading an image by dividing the image into plural areas, and for providing image data;
- and
- process means for digitizing the image data from said reading means,
- wherein said process means is adapted, in digitizing of the image data, to give continuity to the plural areas read by said reading means;
- and
- wherein said process means is adapted, in digitizing the image data of an object area, to digitize image data of preceding and succeeding areas in an overlapping manner.
3 more elements
An image processing apparatus comprising:
- reading means for reading an image by dividing the image into plural areas, and for providing image data;
- process means for digitizing the image data from said reading means;
- and
- memory means for storing information of a jointing portion of the plural areas,
- wherein said process means is adapted, in the jointing portion of the plural areas, to conduct the digitizing based on the information stored in said memory means and on the image data, and
- wherein said process means is adapted to digitize the image data into binary data by an error dispersion method.
3 more elements
An image processing apparatus comprising:
- reading means for reading an image by dividing the image into plural areas, and for providing image data;
- process means for digitizing the image data from said reading means;
- and
- memory means for storing information of a jointing portion of the plural areas,
- wherein said process means is adapted, in the jointing portion of the plural areas, to conduct the digitizing based on the information stored in said memory means and on the image data, and
- wherein said memory means is adapted to store the information of an area preceding an object area to be processed by said process means, and the information stored in said memory means is error data generated by digitizing the image data using an error dispersion method.
3 more elements
An image processing apparatus comprising:
- reading means for reading an image by dividing the image into plural areas, and for providing image data;
- and
- process means for digitizing the image data from said reading means,
- wherein said reading means is adapted to read the image data of an area neighboring an object area to be processed by said process means in an overlapping manner, and
- wherein said process means is adapted to digitize the image data read in the overlapping manner, and
- wherein said process means is adapted to digitize the image data into binary data using an error dispersion method.
3 more elements
An image processing apparatus comprising:
- reading means for reading an image by dividing the image into plural areas, and for providing image data;
- process means for digitizing the image data from said reading means;
- and
- memory means for storing information of a jointing portion of the plural areas;
- wherein said reading means is adapted to read, in an overlapping manner, the image data of an area neighboring the object area to be processed by said process means, and
- wherein said process means is adapted to conduct digitizing based on the information stored in said memory means and the image data in the overlapping manner, and
- wherein said process means is adapted to digitize the image data into binary data by an error dispersion method.
4 more elements
An image processing apparatus comprising:
- reading means for reading an image by dividing the image into plural area, and for providing image data;
- a memory for storing the image data of the plural areas obtained from said reading means;
- means for reading the image data stored in said memory in a sequence different from a sequence of storage in said memory;
- and
- process means for digitizing the image data read from said memory,
- wherein said process means is adapted to digitize the image data into binary data by an error dispersion method.
3 more elements
An image processing method comprising:
- a reading step of reading an image by dividing the image into plural areas, and providing image data;
- and
- a process step of digitizing the image data obtained in said reading step,
- wherein said process step is adapted, in the digitizing of the image data, to give continuity to the plural areas read in said reading step, and
- wherein said process step is adapted to digitize the image data into binary data by an error dispersion method.
2 more elements
An image processing apparatus comprising:
- reading means for reading an image by dividing the image into plural areas, and for providing image data;
- process means for performing a quantizing of the image data obtained from said reading means into record data to be used in an image recording;
- and
- record means for performing image recording in an ink-jet manner, based on the record data obtained by said process means,
- wherein said process means performs, in a case where the image recording is performed by said record means, the quantizing of image data so as to give continuity to the plural areas by said reading means.
2 more elements
Dependencies are inferred from the claim text.