Image processing apparatus for performing image processing for recording text and images, and image processing method for performing image processing for recording text and images
AssigneeCanon Kabushiki Kaisha
InventorsHiromitsu Akiba, Nobutaka Miyake, Shinjiro Hori, Akitoshi Yamada, Fumitaka Goto, Ryosuke Iguchi, Hidetsugu Kagawa, Tomokazu Ishikawa, Kouta Murasawa, Junichi Nakagawa, Senichi Saito
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Abstract
Image ink data is generated which represents the absence of ejection of ink corresponding to pixels for which text ink data represents the ejection of ink.
Claims21
An image processing method to record images on a recording medium using a recording head that ejects ink, the image processing method comprising:
- generating N-value (N is an integer of 3 or more) text data and M-value (M is an integer of 3 or more) image data on the basis of input data;
- generating text record data of L values (L is an integer of 2 or more that is less than N) representing the ejection or absence of ejection of ink by quantizing the N-value text data;
- and
- generating image record data of K values (K is an integer of 2 or more that is less than M) representing the ejection or absence of ejection of ink by quantizing the M-value image data;
- wherein the text record data and the image record data are generated so that the image record data indicates no ejection of ink for pixels corresponding to pixels for which the text record data indicates an ejection of ink.
An image processing apparatus configured to perform image processing to record images on a recording medium using a recording head that ejects ink, the image processing apparatus comprising:
- a generating unit configured to generate N-value (N is an integer of 3 or more) text data and M-value (M is an integer of 3 or more) image data on the basis of input data, generate text record data of L values (L is an integer of 2 or more that is less than N) representing the ejection or absence of ejection of ink by quantizing the N-value text data, and generate image record data of K values (K is an integer of 2 or more that is less than M) representing the ejection or absence of ejection of ink by quantizing the M-value image data,
- wherein the generating unit generates the text record data and the image record data so that the image record data indicates no ejection of ink for pixels corresponding to pixels for which the text record data indicates an ejection of ink.
A recording system including an image processing apparatus and a recording apparatus,
- wherein the image processing apparatus includes
- a first generating unit configured to generate N-value (N is an integer of 3 or more) text data and M-value (M is an integer of 3 or more) image data on the basis of input data,
- a compression unit configured to compress the N-value text data and the M-value image data,
- a transfer unit configured to transfer the compressed N-value text data and the M-value image data,
- wherein the recording apparatus includes
- a receiving unit configured to receive the compressed N-value text data and the M-value image data,
- a rendering unit configured to render the compressed N-value text data and the M-value image data,
- a second generating unit configured to generate text record data of L values (L is an integer of 2 or more that is less than N) representing the ejection or absence of ejection of ink by quantizing the N-value text data, and generate image record data of K values (K is an integer of 2 or more that is less than M) representing the ejection or absence of ejection of ink by quantizing the M-value image data, and
- a recording unit configured to record images onto a recording medium on the basis of the text record data and the image record data,
- and wherein the second generating unit generates the text record data and the image record data so that the image record data indicates no ejection for pixels corresponding to pixels for which the text record data indicates an ejection.
An image processing method to perform image processing to record images on a recording medium using a recording head that ejects ink, the image processing method comprising:
- receiving two-value text data representing the ejection or absence of ejection of ink and multi-value value image data;
- and
- generating two-value image data that represents the absence of ejection of ink corresponding to pixels for which the two-value text data represents the ejection of ink on the basis of the two-value text data and the multi-value image data.
Dependencies are inferred from the claim text.