CN101150653B - Image processing apparatus and image processing method - Google Patents
Image processing apparatus and image processing method Download PDFInfo
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- CN101150653B CN101150653B CN2007101530109A CN200710153010A CN101150653B CN 101150653 B CN101150653 B CN 101150653B CN 2007101530109 A CN2007101530109 A CN 2007101530109A CN 200710153010 A CN200710153010 A CN 200710153010A CN 101150653 B CN101150653 B CN 101150653B
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Abstract
An image processing apparatus includes a color table and a black and white (monochrome) table stored in a table storage unit. Image data is inputted to a data input unit. A table processing unit replaces a density value in at least a part of the three primary colors of the color table with a density value of the black and white table, and generates a temporary table by replacing all density values in other parts of the three primary colors and black with zero. A table retaining unit temporarily retains the temporary table. A data conversion unit converts the inputted image data into print data using the temporarily-retained temporary table. A data output unit outputs the converted print data.
Description
Technical field
The present invention relates to view data is converted to the image processing apparatus of print data, particularly utilize look-up table (lookup table) view data of full color to be converted to the image processing apparatus of the print data of full color or black and white.
The application advocates Japanese patent application 2006-253794 number and Japanese patent application 2006-253795 number the priority that proposed on September 20th, 2006 in proposition on September 20th, 2006.
Background technology
Up to the present, the existing image processing apparatus that view data is converted to print data.Such image processing apparatus is conduct: for example, as application software be installed to the printer driver in the PC function, be equipped on the printer driver of PC, be installed on the printer controller of print apparatus and wait through software and implement as hardware as printer controller that hardware is equipped on print apparatus.
The image processing apparatus of above-mentioned that kind for example has: the table storage part that stores a plurality of look-up tables; The interim table maintaining part that keeps look-up table; The data input part of input image data; Utilization is converted to the view data of being imported by the look-up table of interim maintenance the data transaction portion of print data; The data output section of the print data after the output conversion; At least optionally the indication input part of the printing of input color image and black and white image indication; And obtain look-up table and it is stored in the list processing portion of table maintaining part from the table storage part accordingly with the printing imported indication.
The view data of full color is made up of a brightness value and a plurality of value of color.The view data of such full color is for example to have utilized and be expressed as that (color space that b) waits generates for L, a.
The print data of full color is made up of the concentration value of three primary colors and black.The print data of such full color is to have utilized the color space that is expressed as CMYk (Cyan Magenta Yellow black) to generate.In addition, the print data of black and white is made up of the concentration value of black.
At this, list processing portion obtains color table and it is kept at the table maintaining part from the table storage part when the printing indication of having imported coloured image, in addition, when the printing indication of having imported black and white image, obtains the black and white table and it is stored in the table maintaining part from the table storage part.
In the image processing apparatus of above-mentioned that kind,, generate the print data of full color from the view data of full color when user printing when indication of input color image as required.In addition, when the user imports the printing indication of black and white image as required, generate the print data of black and white from the view data of full color.So, through sending this print data, this coloured image of printable output or black and white image to color printer from image processing apparatus.
In addition, in above-mentioned image processing apparatus, through utilizing look-up table, can be accurately and simply the view data of full color is converted to the print data of full color or black and white.
The image processing apparatus of above-mentioned that kind can generate the print data of full color or black and white from the view data of full color through utilizing look-up table.But, now,, have various demands as the way of output of print data.
For example, have the demand that generates the print data of the monochrome beyond the black and white from the view data of full color.At this, the image processing apparatus that known existence is such:, have the special table that is used for the view data of full color is converted to monochromatic print data as one of look-up table.
But, in this case,, need the special-purpose look-up table of storage in order to carry out the monochromatic image printing of printing or using special color.Because the capacity of look-up table is bigger, so do not hope to increase its number.
For example, as monochrome image, can imagine with one in cyan, magenta, yellow, cyan+magenta, cyan+yellow, magenta+yellow, the cyan+magenta+yellow and generate print data.At this moment, because a plurality of jumbo look-up tables are arranged, the data capacity of storage further increases.
In addition, in order to select any color as special color, need the look-up table corresponding with number of colors.At this moment, because the enormous amount of jumbo look-up table, so be unpractical.
In addition, also there is the demand that generates double-colored print data from the view data of full color.For example, can be that (view data of full color Blue) converts double-colored print data to RGB for Red, Green with color space.
In more detail, for example, when the particular image of printout black and magenta, convert rgb image data to the CMYk print data, and the print data of special color such as only export redness and black.
And also known have a following method: convert rgb image data to the CMYk print data, and special color print data such as export redness, and with the print data beyond this special color of second special colors such as black output.
In above-mentioned image processing apparatus, for example, when duplicating the original copy of printing with special color, can get rid of the waste that the view data of this special color is handled as the view data of full color.But in this case, the color composition beyond the selected special color is not reflected in the print data.Therefore, the reproducibility extreme difference of coloured image.
In addition, the view data of full color is to wait with black and white text and full color pattern to form in fact mostly.For such view data, for example, have black and white and partly use the black printout, chrominance section is with the demand of special color printout.But, such thing, above-mentioned image processing apparatus can't be accomplished.
Summary of the invention
The present invention makes in view of above-mentioned problem, and its first purpose provides a kind of image processing apparatus or image processing method, and it can be from existing color table and black and white table, and generation can convert the view data of full color to the look-up table of monochromatic print data.
The present invention makes in view of above-mentioned problem; Its second purpose provides a kind of image processing apparatus or image processing method; It can be from existing look-up table, and generation can be with the chrominance section of the view data of full color or look-up table of the print data that black partly converts special color to etc.
In order to reach first purpose, image processing apparatus of the present invention has table storage part, data input part, list processing portion, table maintaining part, data transaction portion and data output section.The table storage portion stores has: be used for black and white table that the full-color image data transaction that is made up of a brightness value and a plurality of value of colors is become the color table of the full color print data that the concentration value by three primary colors and black constitutes and the above-mentioned view data of full color converted to the black and white print data that the concentration value by black constitutes.Data input part is imported above-mentioned view data.List processing portion is replaced as the concentration value of above-mentioned black and white table with the concentration value of above-mentioned trichromatic at least a portion color of above-mentioned color table, and the concentration value of above-mentioned trichromatic other part colors and black all is replaced as 0, generates temporary table thus.The above-mentioned temporary table of the interim maintenance of table maintaining part.Data transaction portion utilizes by the interim above-mentioned temporary table that keeps, and converts the above-mentioned view data of being imported to above-mentioned print data.Above-mentioned print data after the data output section output conversion.
In addition, in order to reach first purpose, image processing apparatus of the present invention has table storage part, table maintaining part, data input part, data transaction portion, data output section, indication input part and list processing portion.The table storage portion stores has a plurality of look-up tables that comprise color table and black and white table.The table maintaining part keeps data transaction to use look-up table temporarily.The data input part input image data.Data transaction portion utilizes and is converted the above-mentioned view data of being imported to above-mentioned print data by the above-mentioned look-up table of interim maintenance.Above-mentioned print data after the data output section output conversion.The indication input part is the printing indication of input color image, black and white image and monochrome image at least optionally.In printing when indication of having imported above-mentioned coloured image, list processing portion obtains above-mentioned color table and it is kept at the above-mentioned table maintaining part from above-mentioned table storage part.In addition, in printing when indication of having imported above-mentioned black and white image, list processing portion obtains above-mentioned black and white table and it is kept at the above-mentioned table maintaining part from above-mentioned table storage part.In addition, when the printing indication of having imported above-mentioned monochrome image, list processing portion obtains above-mentioned color table and above-mentioned black and white table from above-mentioned table storage part, generates above-mentioned temporary table, and the above-mentioned temporary table that is generated is kept in the above-mentioned table maintaining part.
Therefore, in image processing apparatus of the present invention, can generate temporary table from existing and necessary color table and black and white table in real time and exactly, this temporary table is used for the full-color image data transaction is become the print data of the monochrome image beyond the black.
In addition, the said monochrome of the present invention is meant the color beyond the black, specifically, is exactly cyan, magenta, yellow, cyan+magenta, cyan+yellow, magenta+yellow, cyan+magenta+yellow.
In order to reach second purpose, image processing apparatus of the present invention has table storage part, data input part, list processing portion, table maintaining part, data transaction portion and data output section.The table storage portion stores has: the black and white table that will be become the color table of the full color print data that the concentration value by three primary colors and black constitutes by the full-color image data transaction that a brightness value and a plurality of value of colors constitute and the above-mentioned view data of full color converted to the black and white print data that the concentration value by black constitutes.Data input part is imported above-mentioned view data.List processing portion is not 0 chrominance section in a plurality of above-mentioned value of color of above-mentioned color table at least one and all is the side in 0 the black and white part; Convert the concentration value of three primary colors and black the concentration value of special color to by each above-mentioned brightness value, generate temporary table thus.The above-mentioned temporary table of the interim maintenance of table maintaining part.Data transaction portion utilizes by the interim above-mentioned temporary table that keeps, and converts the above-mentioned view data of being imported to above-mentioned print data.Above-mentioned print data after the data output section output conversion.
In addition, in order to reach second purpose, image processing apparatus of the present invention has table storage part, table maintaining part, data input part, data transaction portion, data output section, indication input part and list processing portion.The table storage portion stores has a plurality of look-up tables that comprise color table and black and white table.The table maintaining part keeps data transaction to use look-up table temporarily.The data input part input image data.Data transaction portion utilizes and is converted the above-mentioned view data of being imported to above-mentioned print data by the above-mentioned look-up table of interim maintenance.Above-mentioned print data after the data output section output conversion.The indication input part is the printing indication of input color image, black and white image and monochrome image at least optionally.In printing when indication of having imported above-mentioned coloured image, list processing portion obtains above-mentioned color table and it is kept at the above-mentioned table maintaining part from above-mentioned table storage part.In addition, in printing when indication of having imported above-mentioned black and white image, list processing portion obtains above-mentioned black and white table and it is kept at the above-mentioned table maintaining part from above-mentioned table storage part.In addition, when the printing indication of having imported above-mentioned particular image, list processing portion obtains above-mentioned color table and above-mentioned black and white table from above-mentioned table storage part, generates above-mentioned temporary table, and the above-mentioned temporary table that is generated is kept in the above-mentioned table maintaining part.
Therefore, in image processing apparatus of the present invention, can generate temporary table from existing and necessary color table and black and white table in real time and exactly, the print data that this temporary table can convert the chrominance section and a black and white side partly of full-color image data to special color.
In addition; The said various inscapes of the present invention are so long as get final product with what the mode that realizes its function formed; For example, can be used as the performance predetermined function specialized hardware, by computer program paid the image processing apparatus of predetermined function, the predetermined function that in image processing apparatus, realizes through computer program, their combination in any wait and realize.
In addition; Various inscape of the present invention need not separately independent the existence, can be a plurality of inscapes as parts form, inscape by a plurality of parts forms, certain inscape is the part of other inscapes, a part and the part of other inscapes of certain inscape repeats mutually etc.
In addition, in the present invention, make image processing apparatus carry out the exercises corresponding and refer to, make image processing apparatus move control various devices with computer program.For example, make the image processing apparatus store various kinds of data be: it is medium that CPU is kept at various data in the RAM information storage mediums such as (Random Access Memory) that is fixed in image processing apparatus, CPU utilizes FDD (FD Drive) that various data are kept at the FD information storage mediums such as (Flexible Disc-cartridge) that can be installed on image processing apparatus with freely changing.
In addition, the present invention's said " storing data " is meant when using device of the present invention, is in the state of " storing data ".Therefore, allow when device of the present invention dispatches from the factory, not store data, and be set to store the state of data before use.
In image processing apparatus of the present invention, can generate the temporary table that is used for the full-color image data transaction is become the print data of the monochrome image beyond the black from existing and necessary color table with the black and white table in real time and exactly.Therefore, need not to increase the memory span that is used for store look-up tables, can generate the print data of monochrome image from the full-color image data.
In image processing apparatus of the present invention, can generate the temporary table that can convert the chrominance section and a black and white side partly of full-color image data the print data of special color to from existing and necessary color table and black and white table in real time and exactly.Therefore, need not to increase the memory span that is used for store look-up tables, can generate the print data of particular image from the full-color image data.
Through following detailed description of preferred implementation of the present invention being carried out with reference to accompanying drawing, it is clearer that further feature of the present invention, member, process, step, characteristic and advantage can become.
Description of drawings
Fig. 1 is the sketch map of logical construct of the image processing apparatus of expression first embodiment of the invention.
Fig. 2 is the sketch map of the setting content of expression color table and black and white table.
Fig. 3 is the sketch map of the logical construct of expression look-up table.
Fig. 4 is the flow chart of the data processing method of presentation video processing unit.
Fig. 5 is the sketch map of the setting content of the monochromatic table of expression.
Fig. 6 is the sketch map of setting content of the monochrome table of a variation of expression.
Fig. 7 is the sketch map of logical construct of the image processing apparatus of expression second embodiment of the invention.
Fig. 8 is the sketch map of the setting content of expression color table and black and white table.
Fig. 9 is the sketch map of the logical construct of expression look-up table.
Figure 10 is the flow chart of the data processing method of presentation video processing unit.
Figure 11 is the sketch map of the setting content of the double-colored table of expression.
Figure 12 is the sketch map of the logical construct of the double-colored table of expression.
Embodiment
[the 1st execution mode]
Below, with reference to accompanying drawing first execution mode of the present invention is described.The image processing apparatus 100 of this execution mode has the black and white table shown in the color table shown in Fig. 2 (a) and Fig. 2 (b), and promptly, have a plurality of look-up tables, and it is selected one and converts view data to print data from a plurality of look-up tables; Wherein, color table be used for by a brightness value (L) and a plurality of value of color (a, the full-color image data transaction that b) constitutes becomes the full color print data by the concentration value formation of three primary colors (CMY) and black (k); The black and white table is used for converting the view data of full color to by the concentration value formation of black (k) black and white print data.
And; The image processing apparatus 100 of this execution mode also has following list processing portion 110; Promptly, be replaced as the concentration value of black and white table through concentration value with at least a portion color of the three primary colors (CMY) of color table; And other part colors of three primary colors (CMY) and the concentration value of black (k) all are replaced as 0, generate the monochrome table as one of look-up table, this monochrome table is a temporary table.
More particularly; The image processing apparatus 100 of this execution mode is equivalent to so-called PC; Be to constitute, can read computer program and carry out corresponding data processing with general-purpose devices such as CPU, ROM (Read Only Memory), RAM, I/F (Interface) unit.
As shown in Figure 1, the image processing apparatus 100 of this execution mode is connected with color printer 200.This color printer 200 generates print image with pairing CMYk color ink after receiving three primary colors and black from image processing apparatus 100, being the CMYk print data.
The application software of the printer controller corresponding with this color printer 200 is installed in image processing apparatus 100 in addition.In image processing apparatus 100, as the various functions of above-mentioned application software, constructed to logicality above-mentioned data processing division 110 and following each several part 120～etc.
Therefore; The image processing apparatus 100 of this execution mode also has: store the table storage part 120 of a plurality of three dimensional lookup table, temporarily keep table maintaining part 130, the input image data of look-up table data input part 140, utilize by the interim look-up table that keeps (with additional computing etc.) and convert the view data of being imported to the data transaction portion 150 of print data, the data output section 160 and the indication input part 170 of print data after the output conversion, this indication input part 170 is the printing indication of input color image, black and white image and monochrome image at least optionally.
When the printing indication of having imported above-mentioned coloured image, list processing portion 110 obtains the color table shown in Fig. 2 (a) from table storage part 120, and it is kept in the table maintaining part 130.In addition, when the printing indication of having imported black and white image, list processing portion 110 obtains the black and white table shown in Fig. 2 (b) from table storage part 120, and it is kept in the table maintaining part 130.
In addition, when the printing indication of having imported monochrome image, obtain color table and black and white table from table storage part 120, and the monochrome table is kept in the table maintaining part 130.At this moment; List processing portion 110 is as above-mentioned; The concentration value of at least a portion color of the three primary colors (CMY) of color table is replaced as the concentration value of black and white table, and other part colors of three primary colors (CMY) and the concentration value of black (k) all are replaced as 0, generate monochromatic table thus.
In addition, image processing apparatus 100 also has the input part 180 of appointment, and this appointment input part 180 is imported the specific data of trichromatic at least a portion color of the concentration value that will be replaced as the black and white table.For this reason, list processing portion 110 is replaced as the concentration value of trichromatic at least a portion color the concentration value of black and white table accordingly with the specific data of being imported.
The each several part of the image processing apparatus 100 of above-mentioned that kind is as required, utilizes hardware such as I/F unit to realize.But its main body is through working accordingly with the computer program that is kept in the information storage medium such as RAM as the CPU of hardware, realizing.
Such computer program is to be stored in as the software that executions such as CPU moved with inferior processing in the information storage medium such as RAM for example.This processing action is: as a plurality of look-up tables, and storage color table and black and white table; At least optionally accept the printing indication of coloured image, black and white image and monochrome image; Acceptance will be replaced as the specific data of trichromatic at least a portion color of the concentration value of black and white table; Wait the input of accepting view data accordingly with the printing indication; When the printing indication of having imported coloured image, utilize color table to convert view data to print data; When the printing indication of having imported black and white image, utilize the black and white table to convert view data to print data; When the printing indication of having imported monochrome image; Accordingly the concentration value of trichromatic at least a portion color of color table is replaced as the concentration value of black and white table with specific data; And, the concentration value of trichromatic other part colors and black all is replaced as 0, thus as one of look-up table; Generate monochromatic table, and utilize and to convert view data to print data by the monochrome table; And the print data after color printer 200 output conversions.
Below to above-mentioned such structure, the data processing method of the image processing apparatus 100 of this execution mode is described.In the image processing apparatus 100 of this execution mode; As three dimensional lookup table, also register just like color table shown in Fig. 2 (a) and the black and white table shown in Fig. 2 (b), wherein; Color table is used for (L; A, b) view data converts the print data of the coloured image that is made up of CMYk to, and the black and white table is used to convert to the print data of black and white image.For this black and white table, effective in order only to make k, the CMY of CMYk is 0.
If with three-dimensional schematically show (L, a, look-up table b), then as shown in Figure 3, for: in the space of (0-8) * (0-8) * (0-8), be arranged with the state of whole colors of print data.
In such three dimensions, above-below direction is a lightness, and at center all around, chroma is 0.Therefore, shown in Fig. 3 (b), (L, a, b)=(
*, 4,4) be do not have chroma and have only lightness netrual colour (black and white) (
*Be 0～8 any number).
In addition; The operator according to demand; Utilize image processing apparatus 100 to convert view data to print data and when making color printer 200 output; Under the state of having selected view data, carry out operation to the printing indication of image processing apparatus 100 input color images or black and white image or monochrome image.
Promptly, import printing when indication (step S1) of coloured image, image processing apparatus 100 is for example read color table and it is remained on the working region (step S4) of RAM temporarily from ROM.
Then, utilize by the interim color table that keeps, will be by (view data that b) constitutes converts the full color print data (step S9) that is made up of CMYk to, and it is outputed to color printer 200 (step S10) for L, a.Thus, color printer 200 is according to the print data of being imported, the coloured image of printout CMYk.
In addition, when the printing indication of image processing apparatus 100 having been imported black and white image (step S2), read black and white table (step S5).Utilize this black and white table will be by (view data that b) constitutes converts black and white print data (step S9) to, and it is outputed to color printer 200 (step S10) for L, a.Thus, color printer 200 is according to the print data of being imported, the printout black and white image.
In addition, when the printing indication of image processing apparatus 100 having been imported monochrome image (step S3), image processing apparatus 100 is waited for the input operation (step S6) of monochromatic specific data.At this moment, for example, on the display (not shown) of image processing apparatus 100, show following prompting message: " the monochrome that please selection will be printed from following color.Cyan, magenta, yellow, cyan+magenta, cyan+yellow, magenta+yellow, cyan+magenta+yellow " etc.
At this, after the operator after this having been carried out confirm has specified required monochrome, read color table and black and white table, generate monochromatic show (step S7, S8).At this moment; The color table of being read is kept in the working region; To convert the concentration value of black and white table with the concentration value of a part of color of specified monochromatic corresponding three primary colors (CMY) to, other part colors of three primary colors (CMY) and the concentration value of black (k) all will be replaced as 0.
For example, as shown in Figure 5 when having selected as monochrome when yellow, be replaced as the concentration value of black and white table as the concentration value of trichromatic a part of color Y, all be replaced as 0 as the concentration value of the CMk of trichromatic other part colors and black.
After having generated monochromatic table like this, utilization should the monochrome table will be by (view data that b) constitutes converts monochromatic print data (step S9) to for L, a.Because this print data outputed to color printer 200 (step S10), thus color printer 200 according to the print data of being imported, the printout monochrome image.
In image processing apparatus 100 of the present invention, as stated, can be in real time and exactly from existing and necessary color table and black and white hypergene monochromatizing table, this monochrome table is used for the full-color image data transaction is become the print data of black monochrome image in addition.Thus, need not to increase the memory span that is used for store look-up tables, can generate the print data of monochrome image from the full-color image data.
And acceptance will be replaced as the monochromatic specific data of the concentration value of black and white table, and accordingly the concentration value of trichromatic at least a portion color is replaced as the concentration value of black and white table with this specific data.Therefore, can be used as the required monochromatic printing out image data of dealer.
In addition, the present invention is not limited to this execution mode, in the scope that does not break away from its aim, allows to carry out various distortion.For example, in aforesaid way, enumerated the example that the concentration value trichromatic of the same colour of color table is replaced as the concentration value of black and white table.But, also can be as shown in Figure 6, the concentration value of trichromatic a plurality of colors of color table is replaced as the concentration value of black and white table.
In addition, in aforesaid way, enumerated the example that the concentration value direct replacement of color table is become the concentration value of black and white table.But, also can be as shown in Figure 6, the concentration value of black and white table is multiplied by 0.8 coefficient such as grade, then with the concentration value of its displacement color table.
In general, for the printing that utilizes black ink with utilize the printing of color ink, it is not fully synchronous that the lightness that eyes are seen changes ratio.Therefore, when the concentration value direct replacement with color table becomes the concentration value of black and white table, with the situation that concentration progression that monochrome that eyes see prints reduces takes place.
But, as above-mentioned, the concentration value of black and white table is being multiplied by 0.8 coefficient such as grade, behind the concentration value with its displacement color table, the concentration progression that the monochrome that eyes are seen is printed equates with the black and white printing then.
In addition, when specified color can be used trichromatic a part of color (for example, only C and M) performance of color table, the concentration value of trichromatic a part of color (for example, C and M) of color table is converted to the concentration value of black and white table.Trichromatic whole colors (whole colors of CMY) of not using color table in specified color are in the time of just can't showing; Promptly; In order to show specified color; When need using the trichromatic whole color of color table, the concentration value of trichromatic whole colors (whole colors of CMY) of color table is converted to the concentration value of black and white table.When the concentration value with trichromatic whole colors of color table is replaced as the concentration value of black and white table, if above-mentioned coefficient is identical for three primary colors, then because CMY carries out colour mixture with identical ratio, so the monochrome that is generated is doubtful netrual colour.
At this, when the concentration value with trichromatic whole colors of color table is replaced as the concentration value of black and white table, can be directed against three primary colors, make at least one coefficient different, generate the monochrome that is not netrual colour.
In addition, in aforesaid way, enumerated: image processing apparatus 100 is always waited for the input operation of input color image or black and white image or monochrome image, after detecting an input operation, and the action of beginning corresponding processing.But for example, but also default setting is the printing color image, and black and white is printed and only execution when designated of monochromatic printing.
In addition, in this execution mode, enumerated: CPU moves with the computer program that is kept among the RAM etc. accordingly, makes each several part logically realize the various functions of image processing apparatus 100.
But, also can each of such each several part be formed intrinsic hardware, can also a part be kept among RAM etc. as software, and a part is formed hardware.
[the 2nd execution mode]
Below, with reference to accompanying drawing, second execution mode of the present invention is described.The image processing apparatus 300 of this execution mode has color table and the black and white table shown in Fig. 8 (b) shown in Fig. 8 (a), and promptly, have a plurality of look-up tables, it is selected one and converts view data to print data from a plurality of look-up tables; Wherein, Color table is used for by a brightness value (L) and a plurality of value of color (a; B) the full-color image data transaction that constitutes becomes the full color print data by the concentration value formation of three primary colors (CMY) and black (k), and the black and white table is used for converting the view data of full color to by the concentration value formation of black (k) black and white print data.
In addition; Image processing apparatus 300 has list processing portion 310; This list processing portion 310 to a plurality of value of colors of color table (a, at least one in b) is not 0 chrominance section and all is the side in 0 the black and white part, the concentration value of three primary colors (CMY) and black (k) be replaced as the concentration value of special color by each brightness value (L); Generate the double-colored table as one of look-up table thus, this double-colored table is a temporary table.
In more detail; The image processing apparatus 300 of this execution mode is equivalent to so-called PC; Be to constitute, can read computer program and carry out corresponding data processing with general-purpose devices such as CPU, ROM (Read Only Memory), RAM, I/F (Interface) unit.
As shown in Figure 7, the image processing apparatus 300 of this execution mode is connected with color printer 400.This color printer 400 is after receiving three primary colors and black from image processing apparatus 300, being the CMYk print data, with the color ink generation print image of pairing CMYk.
The application software of the printer controller corresponding with this color printer 400 is installed in image processing apparatus 300 in addition.In image processing apparatus 300, as the various functions of above-mentioned application software, constructed to logicality above-mentioned data processing division 310 and following each several part 320～etc.
Therefore; The image processing apparatus 300 of this execution mode also has: store the table storage part 320 of a plurality of three dimensional lookup table, temporarily keep table maintaining part 330, the input image data of look-up table data input part 340, utilize by the interim look-up table that keeps (with additional computing etc.) and convert the view data of being imported to the data transaction portion 350 of print data, the data output section 360 and the indication input part 370 of print data after the output conversion, this indication input part 370 is input color image, black and white image and as the printing indication of the two tone image of particular image at least optionally.
When the printing indication of having imported coloured image, list processing portion 310 obtains the color table shown in Fig. 8 (a) from table storage part 320, and it is kept in the table maintaining part 330.In addition, when the printing indication of having imported black and white image, list processing portion 310 obtains the black and white table shown in Fig. 8 (b) from table storage part 320, and it is kept in the table maintaining part 330.On the other hand, when the printing indication of having imported two tone image, list processing portion 310 obtains color table and black and white table from table storage part 320, and double-colored table is kept in the table maintaining part 330.
At this moment, list processing portion 310 is shown in Figure 11 (a), to a plurality of value of color (a of color table; B) at least one is not 0 chrominance section; By each brightness value (L) concentration value of three primary colors (CMY) is replaced as the concentration value of first special color, and, the concentration value of black (k) is replaced as 0; Relevant its details is narrated in the back.
In addition, shown in Figure 11 (b), (a, b) whole are 0 black and white part, by each brightness value (L) concentration value of three primary colors (CMY) and black (k) are replaced as the concentration value as the black and white table of the concentration value of second special color to a plurality of value of colors of color table.
In addition, image processing apparatus 300 also has the appointment input part 380 of the specific data of above-mentioned first special color of input.For this reason, list processing portion 310, with the specific data of being imported accordingly with the trichromatic concentration value of chrominance section by each brightness value, be replaced as the concentration value of special color.
The each several part of the image processing apparatus 300 of above-mentioned that kind is as required, utilizes hardware such as I/F unit to realize.But its main body is through working accordingly with the computer program that is kept in the information storage medium such as RAM as the CPU of hardware, realizing.
Such computer program is as executions such as CPU is stored in the software of inferior processing action in the information storage medium such as RAM for example, and this processing is moved and is: as a plurality of look-up tables, and storage color table and black and white table; At least optionally accept the printing indication of coloured image, black and white image and two tone image; Accept the specific data of first special color; Wait the input of accepting view data accordingly with the printing indication; When the printing indication of having imported coloured image, utilize color table to convert view data to print data; When the printing indication of having imported black and white image, utilize the black and white table to convert view data to print data; When the printing indication of having imported two tone image; Accordingly the trichromatic concentration value of the chrominance section of color table is replaced as the concentration value of first special color by each brightness value with specific data; And; The concentration value of black is replaced as 0, and the black and white concentration value partly of color table is replaced as the concentration value of black and white table and generates double-colored table by each lightness, and utilize this double-colored table to convert view data to print data; And the print data after color printer 400 output conversions.
Below to above-mentioned such structure, the data processing method of the image processing apparatus 300 of this execution mode is described.In the image processing apparatus 300 of this execution mode; As three dimensional lookup table, also register just like color table shown in Fig. 8 (a) and the black and white table shown in Fig. 8 (b), wherein; Color table is used for (L; A, b) view data converts the print data of the coloured image that is made up of CMYk to, and the black and white table is used to convert to the print data of black and white image.For this black and white table, effective in order only to make k, the CMY of CMYk is 0.
If with three-dimensional schematically show (L, a, look-up table b), then as shown in Figure 9, for: in the space of (0-8) * (0-8) * (0-8), be arranged with the state of whole colors of print data.
In such three dimensions, above-below direction is a lightness, and at center all around, chroma is 0.Therefore, shown in Fig. 9 (b), (L, a, b)=(
*, 4,4) be do not have chroma and have only lightness netrual colour (black and white) (
*Be 0～8 any number).That is, in this execution mode, in that (a, in the time of b)=(4,4), in view data and color table, its value of color is 0.
In addition; The operator as required; When utilizing image processing apparatus 300 that view data is converted to print data and makes it output to color printer 400; Under the state of having selected view data, carry out operation to the printing indication of image processing apparatus 300 input color images or black and white image or two tone image.
Image processing apparatus 300 is shown in figure 10; Because any one input operation (step S1～step S3) in waiting for input color image or black and white image or two tone image always; So; After detecting above-mentioned input operation, promptly begin corresponding processing action (step S4, S5, S6).
Promptly, import printing when indication (step S1) of coloured image, image processing apparatus 300 is for example read color table and it is remained on the working region (step S4) of RAM temporarily from ROM.
Then, utilize by the interim color table that keeps, will be by (view data that b) constitutes converts the full color print data (step S9) that is made up of CMYk to, and it is outputed to color printer 400 (step S10) for L, a.Therefore, color printer 400 is according to the print data of being imported, the coloured image of printout CMYk.
In addition, when the printing indication of image processing apparatus 300 having been imported black and white image (step S2), read black and white table (step S5).Utilize this black and white table will be by (view data that b) constitutes converts black and white print data (step S9) to, and it is outputed to color printer 400 (step S10) for L, a.Thus, color printer 400 is according to the print data of being imported, the printout black and white image.
In addition, when the printing indication of image processing apparatus 300 having been imported two tone image (step S3), image processing apparatus 300 is waited for the input operation (step S6) of the specific data of special color.
At this moment, for example, on the display (not shown) of image processing apparatus 300, show below prompting message: " please point out to be used for the special color of double-colored printing " etc., and show and arranged versicolor rectangular image (not shown) two-dimentionally.
This rectangular image is equivalent to be positioned at lightness L and is 4 height of level cross section in three dimensional lookup table shown in Figure 9.For example, specified (L, a, b)=(
*, 7,7) etc. during special color, shown in figure 12, as these two value of colors (a, b) be respectively certain value part concentration value (L, a b)=(0,7,7)～(8,7,7), become the concentration value of special color.
At this, as stated, after the operator has specified required special color, in image processing apparatus 300, read color table and black and white table, and generate double-colored table (step S7, S8).
At this moment, the color table of being read is kept in the working region, such shown in Figure 11 (a), the concentration value of the three primary colors (CMY) of the chrominance section of color table is replaced as the concentration value of specified special color, and the concentration value of black (k) is replaced as 0.In addition, the chrominance section of color table is meant that a as the value of color among the Lab, at least one of b are not the part of 0 (coordinate is 4 in embodiment illustrated).That is, at least one of a, b is that the part of 0 value is equivalent to chrominance section.In addition, the black and white of color table is meant that partly a, b both sides are the part of 0 (coordinate is 4 in embodiment illustrated).That is, a, b both sides are that 0 part is equivalent to the black and white part.
In addition, shown in Figure 11 (b), the three primary colors (CMY) of the black and white of color table part and the concentration value of black (k) are replaced as the concentration value of black and white table by each brightness value (L).That is, use black and white table (Fig. 8 (b)) to become black and white three primary colors and the concentration value of black partly of the color table of double-colored table.At this moment, certainly, the concentration value of the three primary colors (CMY) of black and white part is replaced as 0.
The chrominance section of the double-colored table that is generated is shown in Figure 11 (a), and the black and white part is shown in Figure 11 (b).After having generated double-colored table like this, utilize this double-colored table will be by (view data that b) constitutes converts the print data (step S9) of special color and black (k) to for L, a.Because this print data is outputed to color printer 400 (step S10), thus color printer 400 according to the print data of being imported, the printout two tone image.
Like this two tone image of printout in the view data of full color, has the chrominance section of chroma to carry out contrast with special color and prints, and the black and white part of not having a chroma is carried out contrast with black and printed.
In image processing apparatus 300 of the present invention, as stated, can generate double-colored table from existing and necessary color table and black and white table in real time and exactly, this double-colored table is used for the full-color image data transaction is become the print data of two tone image.Therefore, need not to increase the memory span that is used for store look-up tables, can generate the print data of two tone image from the full-color image data.
And the specific data of special color is imported in acceptance, and the chrominance section (output valve) of color table is replaced, and makes it to become this special color.Therefore, only, promptly utilize required special color, the chrominance section of view data that just can contrast printing full color through specifying a special color.
And, the black and white of color table partly automatically is replaced as the black and white table.That is, the black and white as the color table of double-colored table is partly replaced, make it to become the value of the black and white table shown in Fig. 8 (b).Therefore, black capable of using automatically partly carries out contrast to the black and white of the view data of full color to be printed, thereby, only specify a special color, can realize the double-colored printing of special color and black simply.
In addition, the present invention is not limited to this execution mode, in the scope that does not break away from its aim, allows to carry out various distortion.For example, in aforesaid way, enumerated the input of the specific data of accepting special color, and the chrominance section of color table has been replaced as the example of this special color.But, but also default setting special color.At this moment, the special color of default setting, for example also can be set at the user can select from three primary colors etc. in advance.
In addition, in aforesaid way, enumerated: the concentration value of the chrominance section of color table is replaced as the concentration value of special color, and, the concentration value of black and white part is replaced as the concentration value as the black and white table of second special color.
But, also can the concentration value of chrominance section be replaced as the concentration value of black and white table, and the concentration value of black and white part is replaced as the concentration value of special color.This occasion in the view data of full color, is carried out contrast with black to the chrominance section that chroma is arranged and is printed, and with special color the black and white of no chroma is partly carried out contrast and prints.
In addition, also can the concentration value of chrominance section be replaced as the concentration value of first special color, and the concentration value of black and white part is replaced as the concentration value of second special color.At this moment, with first special color chrominance section of the view data of full color is carried out contrast and print, black and white is partly carried out the contrast printing with second special color.
And, also can the concentration value of chrominance section be replaced as the concentration value of special color, and the concentration value of black and white part is replaced as 0.This occasion is carried out contrast with special color to the chrominance section of the view data of full color and is printed, and do not print the black and white part.
On the contrary, also can the concentration value of chrominance section be replaced as 0, and the concentration value of black and white part is replaced as the concentration value of special color.This occasion is not printed the chrominance section of the view data of full color, and with special color black and white is partly carried out the contrast printing.
In addition, in aforesaid way, enumerated: shown in figure 12 as the concentration value of special color, utilize the concentration value of two value of colors for the part of certain value.But, if the such concentration value of actual use then is inappropriate for monochromatic contrast and prints.
This is because three dimensional lookup table synthetically is adjusted into the appreciable optimum state of eyes.Therefore, when it goes wrong, as long as will be the concentration value that the concentration value of color table of the part at center is defined as special color in advance with the part that a plurality of value of colors are respectively certain.That is, can use the concentration value that extracts in the certain prescribed limit of part from being respectively, rather than a plurality of value of color is respectively the concentration value of certain part as the center with a plurality of value of colors.
At this moment, by this special color, select and register the data of concentration value.But, even like this, because registration data also only is the coordinate of concentration value, so data capacity can significantly not increase.
In addition, in aforesaid way, enumerated: image processing apparatus 300 is always waited for the input operation of input color image or black and white image or two tone image, after detecting an input operation, promptly begins the corresponding processing action.But, for example, can default setting be the printing color image also, print and double-colored printing and only when specifying, carry out black and white.
In addition, in this execution mode, enumerated: CPU moves with the computer program that is kept among the RAM etc. accordingly, makes each several part logically realize the various functions of image processing apparatus 300.
But, also can such each several part be formed intrinsic hardware, can also a part be kept among RAM etc. as software, and, a part is formed hardware.
Though described the present invention with reference to preferred implementation; But can improve the present invention with several different methods; And can know the numerous embodiments different with the execution mode of top proposition and description by inference, this is conspicuous as far as those skilled in the art.Therefore, appended claims be intended to contain of the present invention all fall into the improvement project in purport of the present invention and the scope.
Claims (8)
1. image processing apparatus, it has:
Store the table storage part of color table and black and white table; This color table is used for the full color print data that becomes the concentration value by three primary colors and black to constitute the full-color image data transaction that is made up of a brightness value and a plurality of value of colors, and this black and white table is used for above-mentioned view data with full color and converts the black and white print data that the concentration value by black constitutes to;
Import the data input part of above-mentioned view data;
The interim table maintaining part that keeps data transaction with table;
Utilize by the interim table that keeps, the above-mentioned view data of being imported is converted to the data transaction portion of above-mentioned print data; And
The data output section of the above-mentioned print data after the output conversion;
It is characterized in that:
Has list processing portion; This list processing portion is replaced as the concentration value of above-mentioned trichromatic at least a portion color of above-mentioned color table the concentration value of above-mentioned black and white table; And above-mentioned trichromatic other part colors of above-mentioned color table and the concentration value of black all are replaced as 0; Generate temporary table thus, and the temporary table that is generated is kept in the above-mentioned table maintaining part.
2. image processing apparatus according to claim 1 is characterized in that: the coefficient that above-mentioned list processing portion is multiplied by regulation with the concentration value in the above-mentioned black and white table is replaced the concentration value of the above-mentioned trichromatic at least a portion color in the above-mentioned color table.
3. image processing apparatus according to claim 2; It is characterized in that: when above-mentioned list processing portion is replaced as the concentration value of above-mentioned black and white table at the concentration value with above-mentioned trichromatic whole colors of above-mentioned color table; For above-mentioned three primary colors, make an above-mentioned coefficient different at least.
4. image processing apparatus, it has:
Store the table storage part of a plurality of look-up tables that comprise color table and black and white table; This color table is used for the full color print data that becomes the concentration value by three primary colors and black to constitute the full-color image data transaction that is made up of a brightness value and a plurality of value of colors, and this black and white table is used for above-mentioned view data with full color and converts the black and white print data that the concentration value by black constitutes to;
The interim table maintaining part that keeps data transaction with look-up table;
The data input part of input image data;
Utilize by the interim above-mentioned look-up table that keeps, the above-mentioned view data of being imported is converted to the data transaction portion of print data; And
The data output section of the print data after the output conversion;
It is characterized in that having:
The indication input part, at least optionally printing of input color image, black and white image and monochrome image indication; And
List processing portion; When the printing indication of having imported above-mentioned coloured image; Obtain above-mentioned color table and it is kept at the above-mentioned table maintaining part from above-mentioned table storage part, when the printing indication of having imported above-mentioned black and white image, obtain above-mentioned black and white table and it is kept at the above-mentioned table maintaining part from above-mentioned table storage part; When the printing indication of having imported above-mentioned monochrome image; Obtain above-mentioned color table and above-mentioned black and white table from above-mentioned table storage part, and the concentration value of above-mentioned trichromatic at least a portion color of above-mentioned color table is replaced as the concentration value of above-mentioned black and white table, and above-mentioned trichromatic other part colors of above-mentioned color table and the concentration value of black all are replaced as 0; Generate temporary table thus, and the above-mentioned temporary table that is generated is kept in the above-mentioned table maintaining part.
5. image processing apparatus according to claim 4 is characterized in that: also have the appointment input part, the input of this appointment input part will convert the specific data of above-mentioned trichromatic at least a portion color of the concentration value of above-mentioned black and white table to,
Above-mentioned list processing portion is replaced as the concentration value of above-mentioned trichromatic at least a portion color the concentration value of above-mentioned black and white table accordingly with the above-mentioned specific data of being imported.
6. image processing method, it has:
The table storing step of storage color table and black and white table; This color table is used for the full color print data that becomes the concentration value by three primary colors and black to constitute the full-color image data transaction that is made up of a brightness value and a plurality of value of colors, and this black and white table is used for above-mentioned view data with full color and converts the black and white print data that the concentration value by black constitutes to;
Import the data input step of above-mentioned view data;
Data transaction is kept step with the table that table remains in the table maintaining part temporarily;
Utilize by the interim table that keeps, the above-mentioned view data of being imported is converted to the data transaction step of above-mentioned print data; And
The data output step of the above-mentioned print data after the output conversion;
It is characterized in that:
Has the list processing step; In this list processing step; The concentration value of above-mentioned trichromatic at least a portion color of above-mentioned color table is replaced as the concentration value of above-mentioned black and white table; And above-mentioned trichromatic other part colors of above-mentioned color table and the concentration value of black all are replaced as 0, generate temporary table thus, and the temporary table that is generated is kept in the above-mentioned table maintaining part.
7. image processing method, it has:
A plurality of look-up table stores that will comprise color table and black and white table are in the table storing step of table storage part; This color table is used for the full color print data that becomes the concentration value by three primary colors and black to constitute the full-color image data transaction that is made up of a brightness value and a plurality of value of colors, and this black and white table is used for above-mentioned view data with full color and converts the black and white print data that the concentration value by black constitutes to;
Data transaction is kept step with the table that look-up table remains in the table maintaining part temporarily;
The data input step of input image data;
Utilize by the interim above-mentioned look-up table that keeps, the above-mentioned view data of being imported is converted to the data transaction step of print data; And
The data output step of the print data after the output conversion;
It is characterized in that having:
The indication input step, at least optionally printing of input color image, black and white image and monochrome image indication; And
The list processing step; In printing when indication of having imported above-mentioned coloured image, keep in the step at above-mentioned table, obtain above-mentioned color table and it is kept at the above-mentioned table maintaining part from above-mentioned table storage part; When the printing indication of having imported above-mentioned black and white image; Keep in the step at above-mentioned table, obtain above-mentioned black and white table and it is kept at the above-mentioned table maintaining part from above-mentioned table storage part, when the printing indication of having imported above-mentioned monochrome image; Keep in the step at above-mentioned table; Obtain above-mentioned color table and above-mentioned black and white table from above-mentioned table storage part, and the concentration value of above-mentioned trichromatic at least a portion color of above-mentioned color table is replaced as the concentration value of above-mentioned black and white table, and above-mentioned trichromatic other part colors of above-mentioned color table and the concentration value of black all are replaced as 0; Generate temporary table thus, and the above-mentioned temporary table that is generated is kept in the above-mentioned table maintaining part.
8. image processing method according to claim 7 is characterized in that: also have the appointment input step, in this specified input step, input will convert the specific data of above-mentioned trichromatic at least a portion color of the concentration value of above-mentioned black and white table to,
In above-mentioned list processing step, accordingly the concentration value of above-mentioned trichromatic at least a portion color is replaced as the concentration value of above-mentioned black and white table with the above-mentioned specific data of being imported.
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| JP2006253794A JP4333718B2 (en) | 2006-09-20 | 2006-09-20 | Image processing device |
| JP2006253795A JP4333719B2 (en) | 2006-09-20 | 2006-09-20 | Image processing device |
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| CN108304147B (en) * | 2018-01-30 | 2021-02-19 | 珠海奔图电子有限公司 | Method and apparatus for generating a bi-color image |
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| US6512595B1 (en) * | 1998-04-27 | 2003-01-28 | Canon Kabushiki Kaisha | Data processing apparatus, data processing method, and medium |
| CN1855998A (en) * | 2005-04-15 | 2006-11-01 | 佳能株式会社 | Image processing apparatus, printing apparatus and image processing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6512595B1 (en) * | 1998-04-27 | 2003-01-28 | Canon Kabushiki Kaisha | Data processing apparatus, data processing method, and medium |
| CN1855998A (en) * | 2005-04-15 | 2006-11-01 | 佳能株式会社 | Image processing apparatus, printing apparatus and image processing method |
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