WO2003032256A1 - Procede de formation d'un topogramme binaire - Google Patents
Procede de formation d'un topogramme binaire Download PDFInfo
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- WO2003032256A1 WO2003032256A1 PCT/JP2002/009667 JP0209667W WO03032256A1 WO 2003032256 A1 WO2003032256 A1 WO 2003032256A1 JP 0209667 W JP0209667 W JP 0209667W WO 03032256 A1 WO03032256 A1 WO 03032256A1
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- edges
- edge
- bitmap
- pixels
- detection
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/20—Function-generator circuits, e.g. circle generators line or curve smoothing circuits
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
- G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformation in the plane of the image
- G06T3/40—Scaling the whole image or part thereof
- G06T3/4007—Interpolation-based scaling, e.g. bilinear interpolation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformation in the plane of the image
- G06T3/40—Scaling the whole image or part thereof
- G06T3/403—Edge-driven scaling
Definitions
- the present invention relates to a method and an apparatus for converting an image into a higher resolution than that of an original image when displaying or printing the image.
- bitmap in which pixels forming the original image are arranged two-dimensionally is converted into a high-resolution bitmap and printed.
- the quality of the printed image is improved by making the corners of the pixel pattern in the bitmap smoother.
- a method of smoothing a corner portion is disclosed in Japanese Patent Application Laid-Open No. Hei 7-283946 or Japanese Patent Laid-Open No. Hei 7-288693.
- the conventional method is to detect a pixel pattern of a corner portion from a bitmap and replace the pixel pattern with a smoothed pixel pattern of a look-up table prepared in advance.
- a method is also known in which the average value of two original pixel columns is inserted between these two original pixel columns to perform smoothing.
- the method of smoothing by inserting the average value of the two original pixel rows can be easily introduced because the processing is simple and there is no need to prepare a lookup table.
- this method since the pixels are arranged in a concentrated manner in the corner portion because the corner portion is smoothed, the step is rather conspicuous.
- a portion where a plurality of steps are intermittently formed to represent an oblique outline is wavy, and there is a problem that a linear outline is impaired by increasing the resolution.
- the method of smoothing using a look-up table is to prepare a pixel pattern in advance so that the pixels arranged for smoothing do not concentrate on corners. This makes it possible to obtain a smoother contour than the above method.
- Japanese Patent Application Laid-Open No. Hei 7-28 396 46 Japanese Patent Laid-open No. Hei 7-28 893, it is not only necessary to add pixels to the corners but also to cut them out. This allows smoothing while taking into account the balance between white and black. However, it takes a long time to search the lookup table. Also, it is not an easy task to generate a notice table in advance.
- the range of corner portions that can be corrected is also limited. Therefore, there is no ability to correct short-period irregularities that could be corrected very well for short-period irregularities. For this reason, as described above, if there is a portion where a plurality of steps are formed intermittently in order to represent an oblique outline in the original image, the image is also wavy by increasing the resolution, and a linear The problem that the contour is lost occurs.
- an object of the present invention is to provide a method and an apparatus which can perform smoothing without using a look-up table and can smoothly perform long-period unevenness.
- the present invention is a method of creating a second bitmap with an increased resolution in a first direction from a first bitmap in which a plurality of pixels forming an image are two-dimensionally arranged.
- the bit map creation method of the present invention if the first and second edges are detected, smoothing can be performed, so that a look-up table is unnecessary. Therefore, the range of smoothing is not limited to a predetermined area, and long-period irregularities can be smoothed.
- the third and fourth edges of the second bitmap by adding an edge between the third and fourth edges of the second bitmap to capture the third and fourth edges, pixels are concentrated on one of the edges. Can be prevented. Therefore, when increasing the resolution of a portion where a plurality of steps are formed intermittently to represent an oblique outline, smoothing can be performed without impairing the linear outline.
- bitmap creation method of the present invention there is no need to create a look-up table in advance, and since a look-up table is not required, the enlargement is performed at a magnification that cannot be covered by the look-up table. Or increase the resolution. Therefore, the bit map creation method of the present invention can enlarge an image at a flexible magnification, and can output an enlarged or smooth image with increased resolution.
- the method for creating a bitmap according to the present invention includes a program (program product) that allows an information processing device such as a computer or a microprocessor, a terminal, or a control device to execute the above-described detection step and the additional step. It can be executed by a program (program product) having the following instructions.
- This program or program product can be recorded on a suitable recording medium such as R ⁇ M or provided via a computer network.
- the first and second wedges appearing side by side in the second direction orthogonal to the first direction for increasing the resolution from the first bitmap are referred to as first detection means, and the first and second edges are detected.
- the resolution in the first direction is increased from the first bitmap by the bitmap creating device realized by installing the program of the present invention on a general-purpose microprocessor or computer according to the creating method of the present invention.
- a second bitmap can be created.
- the second bitmap of the present invention is a bitmap created so that the resolution in the first direction is improved from the first bitmap in which a plurality of pixels forming an image are two-dimensionally arranged.
- Smoothing is desirably performed on edges that have been increased or decreased by one pixel by quantization in the first bitmap, and edges that have been reduced by two pixels or more have been smoothed without performing smoothing. It is desirable to keep the shape. Therefore, in the first detection step, three pixels adjacent in the first direction are scanned in the second direction orthogonal to the first direction, so that the pixels appear side by side at intervals when the resolution is increased. It is possible to detect the first and second edges that will be different.
- the first detection step when the center of three pixels adjacent in the first direction is set as an edge detection line, and the pixel of the edge detection line changes from off to on, a combination of the three pixels is used.
- “Off-Off-Off” (For color or monochrome, the color (RGB or YM C) or black (K) dot to be smoothed is on and the other color or white (W) dot is off) Therefore, for a monoc mouth, it will be “W—W—W.”
- monochrome is also referred to for reference) to “off-off-on (W—W—K)” or “on-off.
- the position after the change to one-off (K—WW) is the first edge, and then “off-on-one-year (w-- ⁇ ) J or“ on-on-one-off ( ⁇ - ⁇ -w) ) ”
- the position can be a second edge.
- the pixel of the edge detection line changes from ON to OFF, the combination of three pixels changes from “ON-ON-OFF (K—K—W)” to “ON-OFF-OFF” (K—W—W)
- the position before the change from “off-on-on (W-K-K)” to “off-off-on (W—W—K)” is defined as the first edge.
- the position before the change to “off-off (W—W—W)” can be used as the second edge.
- the first and second edges appear side by side. It is valid as an edge and compensates between the first and second edges.
- smoothing can be performed in the second direction in the same manner as described above. That is, a second detection step of detecting fifth and sixth edges appearing side by side in the first direction from the first bitmap, and a second detection step corresponding to the fifth and sixth edges, respectively. A second additional step between the seventh and eighth edges of the bitmap to add an edge extending in a second direction to interpolate the seventh and eighth edges. It is possible.
- the third and fourth edges can be detected.
- the second detection step when the center of three pixels adjacent in the second direction is set as an edge detection line, and the pixel of the edge detection line changes from off to on, a combination of three pixels Position after changing from “Off-Off-Off (W—W—W)” to “Off-Off-On (W—W—K)” or “On-Off-Off (K-WW)”
- the fifth edge, and then the position after the change to “off-on-on (W—K—K) J or“ on-on-off ”(K—K-W)” is taken as the sixth edge
- the pixel of the edge detection line changes from ON to OFF
- the combination of three pixels changes from “ON-ON-OFF (K-K-W)” to “ON-ON-OFF”.
- the position before the change from off-off (K-W-W) or off-on-on (W-K-K) to off-off-on (W-W-K) is taken as the sixth edge, and between the fifth and sixth edges.
- the fifth and sixth edges are regarded as valid and appearing side by side. Further, in the second additional step, an edge that extends beyond the straight line connecting the seventh and eighth edges is added.
- the bitmap creation method according to the present invention can be provided as a program, and can also be provided as a dedicated chip (ASIC or LSI). Therefore, it is possible to provide an image output device including the bitmap creation device of the present invention and an output mechanism that outputs the second bitmap generated through the bitmap creation device as an image.
- One of the output mechanisms is a printing mechanism that prints an image according to a second bitmap.
- the second bitmap is used to print an image with a contour having high resolution, no undulation, and smoothness.
- a printer for printing out can be provided.
- Figure 1 is an example of an original bitmap.
- Figure 2 shows an example in which the resolution of the original bitmap is increased, and smoothing is performed by inserting the average value of the two original pixel columns.
- Figure 3 shows an example in which the resolution of the original bitmap is increased, and smoothing is performed by adding dots to corners and cutting edges using a look-up table.
- FIG. 4 shows an example in which the resolution of the original bit map is increased and smoothed by the creation method of the present invention.
- FIG. 5 is a flowchart showing an outline of the bitmap creating method of the present invention.
- FIG. 6 is a diagram showing a process of smoothing by the method shown in FIG.
- FIG. 7 is a diagram illustrating an example of detecting an edge.
- FIG. 8 is a diagram showing an outline of a printer capable of printing using the bitmap of the present invention.
- FIG. 9 is a diagram showing an outline of a host computer and a system capable of outputting a bitmap according to the present invention.
- bitmap 1 shows an example of the original bitmap data (first bitmap).
- This bitmap data (hereinafter referred to as bitmap) 1 is a 5x9 (5x9) bitmap.
- the four dots E1, E2, E3 from the left side of the drawing are indicated by black dots.
- image 11 with E 4 is depicted.
- Bitmap 8 shown in Fig. 2 is an example of a bitmap in which the resolution of the original bitmap 1 is quadrupled in the row direction X and quadrupled in the column direction Y.
- edge E1 The average value of the two original pixel columns is introduced into the corner formed by each of the pixels 2 to E4, and smoothing is performed. Edge E 1 is not smoothed because it is unknown which edge forms the corner.
- an edge E 84 having half the height of the edge E 4 is formed to fill the corner C 4, and on the left side of the edge E 3, to fill the corner C 3
- An edge E83 that is half the height of the edge E3 is formed, and an edge E82 that is half the height of the edge E2 is formed on the left side of the edge E2 to fill the corner C2.
- edges E82 to E84 Since the corners C2 to C4 are buried by these edges E82 to E84, the vicinity of the edges E2 to E4 is smoothed and compared with the image 11 of the original bitmap 1. Edges E2-E4 are no longer emphasized. However, since pixels (dots or pixels) are added only in the vicinity of edges E2 to E4, edges E2 to E4 are still apparent, and these three edges E2 to E4 are emphasized. There is no substitute for being an image. Conversely, only the vicinity of the edges E2 to E4 is oblique, and the bitmap 8 prints an image 81 of an impression in which the curvature of the contour fluctuates finely and the contour is wavy.
- Bitmap 9 shown in Figure 3 also loses the resolution of the original bitmap 1.
- This is an example of a bitmap that is quadrupled in the X direction and quadrupled in the Y column direction.
- a look-up table is used to not only add dots to the corners to fill in the corners, but also cut out the edges to smooth out the balance between white, black, and black. Therefore, the three dots forming edge E 4 are cut away, and corner C 4 is filled with three dots, and the portion of edge ⁇ 4 from corner C 4 of image 11 of the original image is almost equally spaced.
- the four fine edges ⁇ 91, ⁇ 92, ⁇ 93, and ⁇ 94 are arranged so that the image is almost oblique and straight.
- the portion from corner C 3 to edge ⁇ 3 and the portion from corner C 2 to edge ⁇ 2 are also smoothed similarly.
- the line forming the contour has a finely varying curvature, giving a wavy impression, similarly to the image 81 by the bitmap 8 described above. Therefore, the image 91 according to the bitmap 9 has a smoother outline than the image 81 described above because the emphasized edge is not visible, but the outline is still wavy and the original image has a wavy shape. There is no smooth contour that is close to the straight line in image 11 and does not change the curvature significantly.
- Bitmap 2 shown in FIG. 4 is an example of a bitmap in which the resolution of the original bitmap 1 is quadrupled in the row direction X and quadrupled in the column direction ⁇ ⁇ ⁇ by the creation method of the present invention.
- edges are added so as to interpolate linearly between adjacent original edges, instead of adding dots only at corners. Therefore, in the bitmap 2, the image 21 is drawn with a straight contour having a small variation in curvature with smoothing between the original edges.
- edges ⁇ 3 and ⁇ 4 the edges ⁇ 27, ⁇ 28 and ⁇ 29 extending in the ⁇ direction so as not to reach the straight line L3 interpolating the edges ⁇ 3 and ⁇ 4.
- the edges ⁇ 3, ⁇ 27, ⁇ 28, ⁇ 29 and ⁇ 4 outline a straight line.
- the edges ⁇ 24, ⁇ 25 and ⁇ extending in the ⁇ ⁇ direction so as not to reach the straight line L2 interposed between the edges ⁇ 2 and ⁇ 3. 2 6 are formed and these edges ⁇ 2, ⁇ 24, E25, E26 and E3 delineate a straight line.
- edges E21, E22 and E23 are formed so as not to reach a straight line L1 interpolating the edges E1 and E2, These edges El, E21, E22, E23 and E2 outline a straight line.
- FIG. 5 is a flowchart illustrating a process of creating a high-resolution bitmap according to the present invention.
- an area for creating the high-resolution bitmap 2 is secured in step 52.
- the high-resolution bitmap area may be prepared in the memory in advance, and the area may be dynamically acquired in the memory by this process.
- to form the high-resolution bitmap 2 it is possible to acquire all the areas that store the bitmap at a time. As described later, each time the original bitmap 1 is scanned, the corresponding part is scanned.
- the area for storing the high-resolution bitmap 2 may be sequentially acquired.
- the high-resolution bitmap 2 is an integer multiple (4 ⁇ 4) of the original bitmap 1, but in the X and Y directions (row and column directions, or main and sub scan directions).
- Direction can be an arbitrary multiple.
- the resolution is not increased in either direction, that is, it is also possible to increase the resolution by one.
- step 53 the edge is detected while scanning the data of three pixels adjacent to the original bitmap 1 in the Y direction in the X direction (first detection step or detection processing). That is, the edge of the original bitmap 1 is detected by scanning the data of three lines adjacent in the Y direction in the bitmap 1 in the X direction. For example, in FIG. 1, the line of Y O, 1 and 2 is scanned in the direction from 0 to X8.
- step 54 the black dot portion of the original bitmap 1 is copied to the high-resolution bitmap 2.
- step 55 it is determined whether the first edge has been found or not.
- the perception as an edge is that the three previous dot patterns obtained by scanning three lines, for example, lines Y 0, Y 1 and ⁇ 2 in the X direction, and the dot pattern obtained this time This is done by comparison.
- the previous dot pattern X71 or X75 force SrVWW (one-on-one) J)
- the dot pattern X72 or X76 of this time is “W—W—K (on / on / off) J or ⁇ -WW (off / on / on) J.
- the dot of Y73 or Y75 at the position of X72 or X76 is recognized as the first edge.
- the flag or the register is determined in step 57. Is set.
- step 58 it is determined in step 58 whether the search for the second edge can be continued. If the same dot pattern as when the first edge was found is obtained, such as the dot pattern X73 or X77 in Fig. 7 (a) or (b), the search is continued. Also, the search is continued when the dot pattern is X74 or X78. These dot patterns X74 or X78 are second edges as described later. In this way, if the obtained dot pattern is the same as the first edge or if there is one more black dot, the search is continued, and if the number of black dots is reduced or two black dots are added, the step is performed. 5 In 9 dissolve the condition where the first wedge has been found.
- the edge is inclined in the opposite direction to the first edge, and interpolation between them cannot be performed.
- it changes to “K-K-K”
- it is a step with a distance of 2 dots or more, and the height of the step cannot be detected by comparing three lines. Steps with a distance of 2 dots or more are unlikely to have arisen when quantizing a curve or a straight line into dots, and smoothing this would rather reduce the sharpness of the image. However, this leads to image deterioration. Therefore, in this example, only the edge of one dot is detected and smoothing is performed. Therefore, by scanning three lines, it is possible to detect all edges that require smoothing.
- the black dot before the change in the position where the dot pattern changed from “K-W—W” or “W—W—K:” to “w_w—w” is the second dot and D the edge
- the first of the next dot pattern " ⁇ one w- w” is have an edge is not the same dot pattern as rw-W- Kj, If a dot pattern that is not the pattern “w—w_w” of the second edge is detected, it is not an edge that can be interpolated, so the first edge already found is invalidated and a new 1 Start wedge detection.
- the relationship between the first edge and the second edge detected in this way that is, the length between the first and second edges is determined from the line to be detected, that is, from the head in the X direction or the Y direction. Valid up to the end, no restrictions. Therefore, it is possible to detect even very long and long irregularities, and accordingly, smooth Is possible.
- step 60 if the first and second edges that appear adjacent or side by side in the X direction and that can be interpolated are detected, in step 61, the first and second edges on the high-resolution bitmap 2 are detected.
- a first additional step or additional processing for reproducing the interpolated images of the third and fourth edges corresponding to the first edge is performed. That is, in FIG. 4, the first edges El, E2, and E3 and the second edges E2, E3, and E4 that are found by scanning the first bitmap 1 shown in FIG. Edges E21 to E29 extending in the Y direction are added so as to interpolate between the corresponding edges (the same reference numerals are given in Fig. 4).
- the third and fourth edges corresponding to the first and second edges of the original image 11 are connected by straight lines, and the resulting triangle is converted to a high-resolution bitmap 2 On top of.
- the dots extending completely inside the triangle are interpolated as black dots to form edges extending in the ⁇ direction. This makes it possible to connect specific edges of the original bitmap 1 with straight lines, and reproduce the resulting triangle on the bitmap 2 with ⁇ resolution. Therefore, smoother interpolation can be performed in a short time without using a lookup table.
- edge ⁇ 3 will be detected as the first edge and edge ⁇ 4 will be detected as the second edge .
- the edges ⁇ 3 and ⁇ 4 are connected by a straight line L 3, and the dots that do not reach the straight line L 3 are converted into black dots, so that the edge ⁇ extended in the direction shown in FIG. 27, ⁇ 28 and ⁇ 29 are formed.
- a part of the dot is outside the triangle formed by the straight line L3, it is not converted to a black dot, and the added edge does not extend beyond the straight line L3 in the ⁇ direction.
- the contour is smoothed by reducing the number of black dots, so that the ratio of black dots to the smoothed image 21 to the original image 11 increases. Therefore, by minimizing the number of black dots added for smoothing, the black / white ratio is prevented from changing significantly.
- step 62 the information of the first edge and the second edge is cleared in step 62, Until the end of the line, that is, the end in the X direction, the process returns to step 53 to repeat the processing of detecting the edge and the processing of adding a dot between the edges. Then, in step 63, it is confirmed whether or not the scanning has been performed up to the end of the line. If it is the end of the line, the edge discovery information is cleared in step 64, and it is confirmed in step 65 whether all the lines have been scanned. If there are any remaining lines, shift one line in step 66, for example, set lines Y1, Y2, and Y3. Then, returning to step 53, these three lines are scanned in the new direction, a new edge is searched, and a process of adding dots between edges to perform smoothing is performed.
- step 65 it is determined whether or not the smoothing process has been completed while scanning in the X direction up to the end of the original bitmap 1.
- step 67 it is checked in step 67 whether or not both directions have been scanned. If one remains, change the scan direction to the Y direction in step 68, set three lines in the X direction, and detect edges while scanning in the Y direction in the same manner as above. Performs smoothing by adding dots between edges. That is, the directions are switched, and the processing of the second detection step and the second addition step is performed.
- step 53 a second detection process is performed in which three lines adjacent to each other in the X direction, which is the second direction, are scanned in the Y direction. Then, in step 55, the fifth edge is detected, and in step 60, the sixth edge is detected. As a result, in Step 61, in the second bitmap 2 having a high resolution, the seventh and eighth edges are located between the seventh and eighth edges corresponding to the fifth and sixth edges. An edge extending in the X direction is added to interpolate between the eight edges.
- the 7th and 8th edges corresponding to the 5th and 6th edges of the original image 11 are connected with straight lines, and only the dots that completely enter the inside of the completed triangle are black dots Interpolation forms an edge extending in the X direction.
- a smooth interpolated image in which specific edges of the original bitmap 1 are connected by straight lines can be obtained.
- each of the above processes or a part of the processes can be realized by hardware, and an ASIC or an LSI having such a dedicated circuit can be provided as a bitmap creation device according to the present invention. it can.
- the bitmap creation method of the present invention mainly focuses on detection and addition of return operations, it is highly possible that the processing speed can be improved by using a dedicated circuit.
- the substrate having the bit map creation function of the present invention By mounting a plurality of chips provided with appropriate circuits on a substrate, it is also possible to provide a substrate having the bit map creation function of the present invention.
- the first detection function 32 detects edges while scanning in the X direction according to the process shown in FIG. 5, and the first and second edges detected in the X direction.
- a first additional function 33 that adds dots to interpolate between the corresponding third and fourth edges
- a second detection function 34 that detects edges while scanning in the Y direction
- a Y direction An ASIC, LSI or processor 31 with a second additional function 35 for adding dots to interpolate between the seventh and eighth edges corresponding to the fifth and sixth edges detected in Alternatively, a control board can be provided as the bitmap creation device of the present invention.
- the printer 30 is supplied from the host computer 90.
- the original low-resolution bitmap (first bitmap) 1 can be converted to a high-resolution bitmap (second bitmap) 2 and supplied to the printing mechanism 36. Therefore, from the printer 30, it is possible to obtain a printout 39 in which the image 2a is printed by the second bitmap 2 with a high resolution, no wavy, and a smoothly expanded contour. .
- the processor 31 capable of executing the processing shown in FIG. 5 has the edge detection functions 32 and 34 and the dot addition functions 33 and 35 as dedicated circuits. It may be implemented by hardware logic such as. Alternatively, a storage medium such as a ROM or RAM that stores a program that has instructions that can execute the processing of detecting edges shown in Fig. 5 and the processing of adding dots between edges and interpolating them is implemented. It may be.
- the host computer 90 shown in FIG. 9 is an application 91 that outputs an original low-resolution bitmap (first bitmap) 1, for example, a word processor (WWW browser) and a first bitmap 1.
- a printer driver program (printer driver) 95 that converts the data into a high-resolution bitmap (second bitmap) 2 and supplies it to the printer 30 is installed.
- the printer driver 95 corresponds to the first detection step 96 for detecting an edge while scanning in the X direction according to the process shown in FIG. 5, and the first and second edges detected in the X direction.
- a second additional step 99 for adding dots to interpolate between the seventh and eighth edges corresponding to the detected fifth and sixth edges is provided with instructions executable by the host computer 90. ing.
- the first bitmap 1 of low resolution supplied from the application 91 is a printer driver 95 Is converted to a high-resolution second bitmap 2 and supplied to the printer 30. For this reason, it is possible to obtain from the printer 30 a printout 39 printed with the second bitmap 2 and having a high resolution, no wavy, and an image 2a drawn with a smoothly connected outline.
- the second bitmap 2 can be provided via a computer network such as a LAN 92, or can be provided by being recorded in an appropriate memory 93.
- bitmap with increased resolution in the X and Y directions has been described.However, a bitmap with increased resolution in only one of the resolutions may be created in the same manner. Is possible. In this case, if the resolution is increased in the Y direction, smoothing is possible only by scanning in the X direction, and there is no need to scan in the Y direction.
- the present invention is not limited to the case where the resolution is increased equally in the X direction and the Y direction, and the present invention can be applied to the case where the resolutions in the X direction and the Y direction are different.
- a printer having a printing mechanism for printing an image using the second bitmap is shown as an image output device. Is a pixel matrix or a pixel pattern.
- the present invention can be applied not only to a printer but also to another printing device or display as long as the device outputs an image.
- the present invention is described by taking a monochrome bitmap as an example for simplicity. However, the present invention is also applicable to a bitmap for a color image.
- the dots of the color to be smoothed are A dot of another color or a white dot corresponds to an off dot corresponding to the above-described on dot.
- bitmap creation method of the present invention when converting a bitmap for printing or displaying an image into a bitmap having a higher resolution, interpolation between the edges of the original bitmap is performed. By adding a wedge, smoothing is performed and the image quality is improved. For this reason, smoothing can be performed without using a work bitmap or look-up table, and the trouble of creating a look-up table is unnecessary. Also, since the time for referencing the lookup table can be omitted, smoothing can be performed in a shorter time.
- the bitmap creating method and the bitmap creating apparatus are capable of creating a bitmap having a higher resolution and a smoothed bitmap in a short time, and a sharp and high-resolution image can be formed in a short time. It is possible to provide a printer and other image output devices capable of outputting data to the printer, and a device for supplying data to them.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2003535149A JP3971748B2 (ja) | 2001-09-20 | 2002-09-20 | ビットマップの作成方法 |
US10/490,048 US7502144B2 (en) | 2001-09-20 | 2002-09-20 | Method of preparing bit map |
EP02767989A EP1429286A1 (en) | 2001-09-20 | 2002-09-20 | Method of preparing bit map |
Applications Claiming Priority (2)
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JP2001286503 | 2001-09-20 | ||
JP2001-286503 | 2001-09-20 |
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WO2003032256A1 true WO2003032256A1 (fr) | 2003-04-17 |
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PCT/JP2002/009667 WO2003032256A1 (fr) | 2001-09-20 | 2002-09-20 | Procede de formation d'un topogramme binaire |
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US (1) | US7502144B2 (ja) |
EP (1) | EP1429286A1 (ja) |
JP (1) | JP3971748B2 (ja) |
WO (1) | WO2003032256A1 (ja) |
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JP2008503345A (ja) * | 2004-06-22 | 2008-02-07 | エンゲルハード・コーポレーシヨン | 排気処理用層状触媒 |
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US8902320B2 (en) | 2005-01-31 | 2014-12-02 | The Invention Science Fund I, Llc | Shared image device synchronization or designation |
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US9910341B2 (en) | 2005-01-31 | 2018-03-06 | The Invention Science Fund I, Llc | Shared image device designation |
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US9124729B2 (en) | 2005-01-31 | 2015-09-01 | The Invention Science Fund I, Llc | Shared image device synchronization or designation |
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US8233042B2 (en) | 2005-10-31 | 2012-07-31 | The Invention Science Fund I, Llc | Preservation and/or degradation of a video/audio data stream |
US9819490B2 (en) | 2005-05-04 | 2017-11-14 | Invention Science Fund I, Llc | Regional proximity for shared image device(s) |
US9942511B2 (en) | 2005-10-31 | 2018-04-10 | Invention Science Fund I, Llc | Preservation/degradation of video/audio aspects of a data stream |
US9451200B2 (en) | 2005-06-02 | 2016-09-20 | Invention Science Fund I, Llc | Storage access technique for captured data |
US9167195B2 (en) | 2005-10-31 | 2015-10-20 | Invention Science Fund I, Llc | Preservation/degradation of video/audio aspects of a data stream |
US8072501B2 (en) | 2005-10-31 | 2011-12-06 | The Invention Science Fund I, Llc | Preservation and/or degradation of a video/audio data stream |
US9191611B2 (en) | 2005-06-02 | 2015-11-17 | Invention Science Fund I, Llc | Conditional alteration of a saved image |
US9093121B2 (en) | 2006-02-28 | 2015-07-28 | The Invention Science Fund I, Llc | Data management of an audio data stream |
US7782365B2 (en) | 2005-06-02 | 2010-08-24 | Searete Llc | Enhanced video/still image correlation |
US8253821B2 (en) | 2005-10-31 | 2012-08-28 | The Invention Science Fund I, Llc | Degradation/preservation management of captured data |
US20070222865A1 (en) | 2006-03-15 | 2007-09-27 | Searete Llc, A Limited Liability Corporation Of The State Of Delaware | Enhanced video/still image correlation |
US9621749B2 (en) | 2005-06-02 | 2017-04-11 | Invention Science Fund I, Llc | Capturing selected image objects |
US7872675B2 (en) | 2005-06-02 | 2011-01-18 | The Invention Science Fund I, Llc | Saved-image management |
US9967424B2 (en) | 2005-06-02 | 2018-05-08 | Invention Science Fund I, Llc | Data storage usage protocol |
US8964054B2 (en) | 2006-08-18 | 2015-02-24 | The Invention Science Fund I, Llc | Capturing selected image objects |
US9076208B2 (en) | 2006-02-28 | 2015-07-07 | The Invention Science Fund I, Llc | Imagery processing |
US10003762B2 (en) | 2005-04-26 | 2018-06-19 | Invention Science Fund I, Llc | Shared image devices |
US8681225B2 (en) | 2005-06-02 | 2014-03-25 | Royce A. Levien | Storage access technique for captured data |
US9001215B2 (en) | 2005-06-02 | 2015-04-07 | The Invention Science Fund I, Llc | Estimating shared image device operational capabilities or resources |
US20070120980A1 (en) | 2005-10-31 | 2007-05-31 | Searete Llc, A Limited Liability Corporation Of The State Of Delaware | Preservation/degradation of video/audio aspects of a data stream |
JP5168037B2 (ja) * | 2008-09-10 | 2013-03-21 | 富士ゼロックス株式会社 | 画像処理装置、画像処理システムおよび画像処理プログラム |
JP6314544B2 (ja) * | 2014-03-04 | 2018-04-25 | 株式会社リコー | 画像処理方法、画像処理装置、画像形成装置、プログラム |
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- 2002-09-20 WO PCT/JP2002/009667 patent/WO2003032256A1/ja active Application Filing
- 2002-09-20 EP EP02767989A patent/EP1429286A1/en not_active Withdrawn
- 2002-09-20 US US10/490,048 patent/US7502144B2/en not_active Expired - Fee Related
- 2002-09-20 JP JP2003535149A patent/JP3971748B2/ja not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
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JPWO2003032256A1 (ja) | 2005-01-27 |
US20040239958A1 (en) | 2004-12-02 |
JP3971748B2 (ja) | 2007-09-05 |
US7502144B2 (en) | 2009-03-10 |
EP1429286A1 (en) | 2004-06-16 |
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