WO2009087809A1 - 立体画像印刷物 - Google Patents
立体画像印刷物 Download PDFInfo
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- WO2009087809A1 WO2009087809A1 PCT/JP2008/070325 JP2008070325W WO2009087809A1 WO 2009087809 A1 WO2009087809 A1 WO 2009087809A1 JP 2008070325 W JP2008070325 W JP 2008070325W WO 2009087809 A1 WO2009087809 A1 WO 2009087809A1
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- WIPO (PCT)
- Prior art keywords
- pixels
- image
- halftone
- printed
- printed matter
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/525—Arrangement for multi-colour printing, not covered by group B41J2/21, e.g. applicable to two or more kinds of printing or marking process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/06—Veined printings; Fluorescent printings; Stereoscopic images; Imitated patterns, e.g. tissues, textiles
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B35/00—Stereoscopic photography
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
- G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
- G03G15/1625—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer on a base other than paper
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F19/00—Advertising or display means not otherwise provided for
- G09F19/12—Advertising or display means not otherwise provided for using special optical effects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
- H04N1/00132—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture in a digital photofinishing system, i.e. a system where digital photographic images undergo typical photofinishing processing, e.g. printing ordering
- H04N1/00185—Image output
- H04N1/00201—Creation of a lenticular or stereo hardcopy image
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/0027—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using protective coatings or layers by lamination or by fusion of the coatings or layers
Definitions
- the present invention relates to a three-dimensional image printed material using a lenticular lens, and more particularly to a halftone dot printing technique for a halftone image printed material arranged on the back surface of a lenticular lens and related to density gradation expression.
- an FM (frequency modulation) screen method and an AM (amplitude modulation) screen method are known (for example, Patent Document 1).
- the FM screen method expresses the density gradation by the density of halftone dots having a certain size
- the AM screen method expresses the density gradation by the size of the halftone dots.
- a method for halftone printing is proposed (Patent Document 2).
- halftone dots are concentrated in the center because the halftone dot is printed by the amplitude modulation screen in the longitudinal direction around the center point of the minimum unit area for gradation expression.
- the background color of the printing target paper tends to appear at the edge of the minimum unit area for gradation expression and the image becomes rough.
- halftone printing is performed so that the halftone dots are separated from each other, it depends on the resolution of a printing machine or printing press capable of steadily setting one halftone dot, thereby realizing higher resolution printing. It was difficult.
- an object of the present invention is to provide a stereoscopic image printed matter with reduced image roughness.
- the stereoscopic image print according to the present invention includes a lenticular lens in which a plurality of semi-cylindrical lenses are continuously arranged, and a back surface of the lenticular lens, and a plurality of elongated images corresponding to each semi-cylindrical lens.
- a halftone dot image printed matter arranged continuously, and the elongated image includes a minimum unit area for gradation expression, and a plurality of reference positions are set for each color plate in each minimum unit area. Further, it is characterized in that halftone printing is performed by an amplitude modulation screen in the longitudinal direction of the elongated image continuously for each reference position.
- the slender image of the halftone dot printed matter has a plurality of reference positions set for each color plate in the minimum unit area for gradation expression, and continuously in the longitudinal direction for each reference position. Since the halftone dot printing is performed by the amplitude modulation screen, the roughness of the image is reduced from the lenticular lens side, and the halftone dot image printed matter can be observed three-dimensionally.
- the reference positions in a plurality of elongated images arranged corresponding to the same semi-cylindrical lens are preferably arranged linearly.
- the printing area is expanded by the continuous printing of pixels around the reference position, so that halftone dot printing can be more reliably performed by a printing press or printing press. Gradation expression exceeding the resolution of the plate machine is possible.
- the linear reference positions of the elongated images arranged corresponding to the adjacent semicylindrical lenses are shifted from each other.
- the base of the halftone image printed material tends to be more visible as the position is farther from the reference position, but the linear reference position of the elongated image is shifted if the region corresponding to the semi-cylindrical lens is different. By doing so, it is possible to prevent the background from being continuous in the halftone image print corresponding to the adjacent semi-cylindrical lens.
- the three-dimensional image printed matter according to the present invention includes a lenticular lens in which a plurality of semicylindrical lenses are continuously arranged, and a plurality of elongate lenses arranged on the back surface of the lenticular lens, corresponding to each semicylindrical lens.
- a halftone image printed matter in which images are continuously arranged, and the elongated image includes a minimum unit area for gradation expression, and a reference position is set for each color plate in each minimum unit area.
- halftone dots are continuously printed by an amplitude modulation screen in the longitudinal direction of the elongated image for each reference position, and the number of the reference positions is different depending on the number of halftone dots to be printed.
- the slender image of the halftone image printed matter has a reference position set for each color plate in the minimum unit area for gradation expression, and amplitude modulation is continuously performed in the longitudinal direction for each reference position. Since halftone dots are printed on the screen, and the number of reference positions varies depending on the elongated image depending on the number of halftone dots to be printed, the reference positions are scattered when viewed from the entire halftone dot printed matter. The roughness of the image is reduced from the side, and the halftone image print can be observed in three dimensions.
- the stereoscopic image print according to the present invention includes a lenticular lens in which a plurality of semicylindrical lenses are continuously arranged, and a plurality of elongate lenses arranged on the back surface of the lenticular lens, corresponding to each semicylindrical lens.
- a halftone image printed matter in which images are continuously arranged, and the elongated image includes a minimum unit area for gradation expression, and a plurality of reference positions for each color plate in each minimum unit area. It is set, and halftone printing is performed by an amplitude modulation screen in the longitudinal direction of the elongated image continuously for each reference position, and the reference position is shifted by the elongated image.
- each reference position is continuously arranged in the longitudinal direction by an amplitude modulation screen. Since halftone printing is performed and the reference position is shifted by the elongated image, the roughness of the image is reduced from the lenticular lens side, and the halftone image printed matter can be observed three-dimensionally.
- FIGS. 3A and 3B are diagrams illustrating the three-dimensional image printed matter according to the first embodiment, FIG.
- FIG. 3A is a diagram illustrating the halftone dot printed matter
- FIG. 3B is a halftone dot image. It is a figure which shows arrangement
- 4A, 4 ⁇ / b> B, 4 ⁇ / b> C, and 4 ⁇ / b> D are diagrams for explaining the stereoscopic image printed matter of each embodiment
- FIG. 4A is a diagram illustrating the halftone image printed matter of the first embodiment.
- FIG. 4B is a diagram showing the halftone dot image printed matter of the second embodiment
- FIG. 4C is a diagram showing the halftone dot image printed matter of the third embodiment
- FIG. 5 (A) and 5 (B) are diagrams for explaining the stereoscopic image printed matter of each embodiment.
- FIG. 5 (A) is a diagram showing the halftone image printed matter of the fifth embodiment, and FIG. These are figures which show the halftone image printed matter of 6th Embodiment.
- FIG. 6 is a diagram for explaining a reference position of a halftone image printed material in the stereoscopic image printed material according to the seventh embodiment.
- FIG. 7 is a diagram illustrating a stereoscopic image printed matter according to the seventh embodiment.
- FIG. 1 is a diagram showing a method for producing a halftone image printed material 3 used for a stereoscopic image printed material.
- the cameras 1a, 1b, 1c, and 1d of the stereo camera 1 are installed so as to be arranged horizontally, and the subject 2 is photographed.
- FIG. 1B shows images taken by the cameras 1a to 1d.
- B-1 in FIG. 1B is an image G1 taken by the camera 1a, and B-2 in FIG.
- the image G2 photographed by the camera 1b, B-3 in FIG. 1B is an image G3 photographed by the camera 1c
- B-4 in FIG. 1B is an image G4 photographed by the camera 1d. is there.
- These images G1 to G4 are divided vertically according to the number of semi-cylindrical lenses of the lenticular lens used.
- the images obtained by dividing the B-1 image G1 are referred to as elongated images s11, s12, s13,.
- the image obtained by dividing the B-2 image G2 is defined as the elongated images s21, s22, s23,...
- the image obtained by dividing the B-3 image G3 is defined as the elongated images s31, s32, s33,.
- B-4 images G4 are divided into elongated images s41, s42, s43,.
- the long images of the images G1 to G4 are arranged one by one in the order of the images G1 to G4. That is, from left to right, s11, s21, s31, s41, s12, s22, s32, s42, s13, s23, s33, s43, s14, s24, s34, s44,. Is arranged.
- each group Gr is arranged on the back surface of the semi-cylindrical lens of the lenticular lens, and is enlarged or reduced in the vertical and horizontal directions so as to be arranged over the entire back surface of the lenticular lens to form a halftone image printed matter 3.
- FIG. 2 is an exploded perspective view of the stereoscopic image printed matter 5.
- the halftone image printed material 3 is configured by connecting each group Gr, and an elongated image of each group Gr is arranged so as to fit the back surface of one semi-cylindrical lens 4 b in the lenticular lens 4. And pasted to the back surface 4a.
- FIG. 3A is a diagram for explaining halftone dot printing of the halftone dot image printed material 3
- FIG. 3B is a half cylindrical lens 4 b of the lenticular lens 4 attached to the halftone dot image printed material 3. It is a figure for demonstrating these positional relationships.
- the reference lines 6 for each color plate may be made coincident or the halftone dots are scattered so that the background does not appear. Alternatively, it may be set to be shifted.
- the slender image of the halftone dot printed matter 3 is halftone printed by an amplitude modulation (AM) screen in the longitudinal direction around a plurality of reference positions for each color plate in the minimum unit area 3a for gradation expression. For this reason, the roughness of the image is reduced from the lenticular lens 4 side, and the halftone image printed matter 3 can be observed three-dimensionally.
- the reference positions are arranged continuously and in a straight line, the printing area is expanded by the continuous printing of pixels around the reference position, making it possible to increase the thickness of halftone dot printing by a printing press or printing press. Thus, it is possible to reliably perform gradation expression that exceeds the resolution of a printing press or printing press.
- the number of pixels to be printed from each reference position is assigned equally to the number of pixels to be printed in the elongated image, but may not be equal. . For example, if the minimum number of pixels to be assigned to each reference position is determined and the number of pixels to be printed is less than that number, assign it to only one reference position, do not print pixels on the other, If there are more than a few pixels, they may be allocated equally. Alternatively, the number of pixels may be randomly assigned to each reference position. At this time, it may be assigned completely at random or may be restricted.
- the minimum number of pixels to be assigned to each reference position is determined and the number of pixels to be printed is less than that number, the assignment is made only to one reference position, and no pixels are printed on the other. If there are more pixels than the number, only the number of pixels exceeding the minimum number of assigned pixels is randomly assigned.
- the two reference lines 6 and 6 are set at a position 1/4 of the length from the upper and lower edges of the elongated image, but the position of the reference line 6 is
- the present invention is not limited to this, and the reference line 6 may be shifted as shown in FIG. 4B showing the second embodiment.
- the pixel to be printed is moved upward from the lowermost pixel. It is only necessary to add pixels to be printed, and the number of pixels to be printed still remains even if the pixels to be printed reach the lowest pixel among the 20 pixels arranged in the vertical direction. If so, add pixels to be printed downward from the uppermost pixel.
- the linear reference positions of the elongated images arranged corresponding to the adjacent semi-cylindrical lenses 4b are shifted from each other by changing the shift width.
- the farther from the reference position the easier it is to see the background of the halftone image printed matter 3.
- the linear reference position of the elongated image is different from the region corresponding to the semicylindrical lens 4b. If shifted, it is possible to prevent the background from being continuous in the halftone image printed matter 3 corresponding to the adjacent semicylindrical lens 4b.
- the number of pixels to be printed from each reference position is evenly allocated to the number of pixels to be printed in the elongated image.
- determine the minimum number of pixels to be assigned to each reference position and if the number of pixels to be printed is less than that number, assign it to only one reference position, do not print the pixels on the other, If there are pixels exceeding the number of pixels, they may be allocated equally.
- the number of pixels may be randomly assigned to each reference position. At this time, it may be assigned completely at random or may be restricted.
- the minimum number of pixels to be assigned to each reference position is determined and the number of pixels to be printed is less than that number, the assignment is made only to one reference position, and no pixels are printed on the other. If there are more pixels than the number, only the number of pixels exceeding the minimum number of assigned pixels is randomly assigned.
- the pixels to be printed are set by setting the two reference lines 6 and 6 at a position 1/4 in length from the upper and lower edges of the elongated image.
- the numbers were printed in almost equal parts, the number of gradation expression pixels assigned to the upper and lower reference lines 6 is equal to 8 pixels and 12 pixels as shown in FIG. 4C showing the third embodiment.
- each reference line 6 may be set at the center of each gradation expression pixel number. In this case, the number of pixels to be printed in the elongated image may be arbitrarily assigned to each reference line 6.
- the reference position is shifted in the halftone image printed material 3 corresponding to the adjacent semicylindrical lens 4b, and the background can be prevented from appearing continuously in the halftone image printed material 3.
- the halftone image print 3 is halftone printed with a plurality of color plates, if the reference line 6 for each color plate is shifted so that the halftone dots are scattered, the halftone image The background of the printed material 3 becomes more difficult to appear.
- the number of pixels to be printed from the reference position is arbitrarily assigned to each reference position.
- the number of pixels to be printed in the elongated image is set to the number of pixels assigned to each reference line 6. It may be assigned according to the ratio.
- the number of pixels to be allocated may be limited even if it is arbitrarily allocated. For example, if the minimum number of pixels to be assigned to each reference position is determined and the number of pixels to be printed is less than that number, the assignment is made only to one reference position, and no pixels are printed on the other. When there are pixels exceeding the number of pixels, only the number of pixels exceeding the minimum number of allocated pixels may be randomly allocated.
- the reference position may be shifted up and down as in the second embodiment. At this time, if the number of pixels to be printed still remains after reaching the uppermost pixel among the 20 pixels arranged in the vertical direction, the pixel to be printed is moved upward from the lowermost pixel. It is only necessary to add pixels to be printed, and the number of pixels to be printed still remains even if the pixels to be printed reach the lowest pixel among the 20 pixels arranged in the vertical direction. If so, add pixels to be printed downward from the uppermost pixel.
- the reference position is linearly arranged on the reference line 6 as shown in FIG. 4A.
- each elongated image is shown in FIG. 4D showing the fourth embodiment.
- the reference position 7 is set at random. In this case, the number of pixels to be printed in the elongated image may be arbitrarily assigned to each reference line 6. With this configuration, the roughness of the image is reduced from the lenticular lens 4 side, and the halftone dot image printed matter 3 can be observed three-dimensionally.
- the number of pixels to be printed from the reference position is arbitrarily assigned to each reference position.
- the number of pixels to be printed in the elongated image is set. Alternatively, it may be assigned according to the ratio of the number of pixels assigned to each reference line 6.
- the number of pixels to be allocated may be limited even if it is arbitrarily allocated. For example, if the minimum number of pixels to be assigned to each reference position is determined and the number of pixels to be printed is less than that number, the assignment is made only to one reference position, and no pixels are printed on the other. When there are pixels exceeding the number of pixels, only the number of pixels exceeding the minimum number of allocated pixels may be randomly allocated.
- the reference position may be shifted up and down. At this time, if the number of pixels to be printed still remains after reaching the uppermost pixel among the 20 pixels arranged in the vertical direction, the pixel to be printed is moved upward from the lowermost pixel. It is only necessary to add pixels to be printed, and the number of pixels to be printed still remains even if the pixels to be printed reach the lowest pixel among the 20 pixels arranged in the vertical direction. If so, add pixels to be printed downward from the uppermost pixel.
- one reference line 6 is set when the number of pixels to be printed is less than a predetermined number, for example, less than 10 pixels, in the minimum unit area 3a for expressing gradation of a slender image. Then, the position of the pixel on the reference line 6 is set as a reference position, and halftone dots are printed in the vertical direction in the longitudinal direction of the elongated image with the reference position as the center.
- the number of pixels to be printed is at least a predetermined number, for example, 10 pixels or more
- a predetermined number for example, 10 pixels or more
- two reference lines 6 are set, A pixel position on the reference line 6 is set as a reference position, and halftone dots are printed in the vertical direction in the longitudinal direction of the elongated image with the reference position as the center.
- the reference positions are scattered when viewed from the entire halftone image printed matter 3, and the image is viewed from the lenticular lens 4 side.
- the halftone image print 3 can be observed three-dimensionally.
- the number of pixels to be printed from the reference position is uniformly assigned the number of pixels to be printed in the elongated image, but may not be equal.
- the minimum number of pixels allocated to each reference position may be determined, and only the number of pixels exceeding the minimum number of allocated pixels may be randomly allocated.
- the reference position may be shifted up and down as in the second embodiment. At this time, if the number of pixels to be printed still remains after reaching the uppermost pixel among the 20 pixels arranged in the vertical direction, the pixel to be printed is moved upward from the lowermost pixel. It is only necessary to add pixels to be printed, and the number of pixels to be printed still remains even if the pixels to be printed reach the lowest pixel among the 20 pixels arranged in the vertical direction. If so, add pixels to be printed downward from the uppermost pixel.
- the number of pixels to be printed from the reference position is assigned equally to the number of pixels to be printed in the elongated image, but it may not be equal.
- the minimum number of pixels allocated to each reference position may be determined, and only the number of pixels exceeding the minimum number of allocated pixels may be randomly allocated.
- the reference position may be shifted up and down as in the second embodiment. At this time, if the number of pixels to be printed still remains after reaching the uppermost pixel among the 20 pixels arranged in the vertical direction, the pixel to be printed is moved upward from the lowermost pixel. It is only necessary to add pixels to be printed, and the number of pixels to be printed still remains even if the pixels to be printed reach the lowest pixel among the 20 pixels arranged in the vertical direction. If so, add pixels to be printed downward from the uppermost pixel.
- the first to sixth embodiments are related to the setting of the reference position in the adjacent region 3a in one group Gr, but the seventh embodiment is a plurality of semi-cylindrical lenses 4b over a plurality of Gr. Is related to the setting of the reference position in the halftone dot image printed matter 3 corresponding to.
- two reference positions serving as the centers of the amplitude modulation screens in a plurality of elongated images arranged corresponding to the same semi-cylindrical lens 4b are arranged linearly.
- the linear reference positions are set so as to be shifted from each other when compared with the elongated images arranged corresponding to the adjacent semi-cylindrical lenses 4b.
- the positions of the pixels on the reference line 6 are used as reference positions, and halftone dots are printed for the number of pixels to be printed in the longitudinal direction of the elongated image with these reference positions as the center.
- the present invention is not limited to the above embodiment.
- the pixels are printed so as to extend up and down around the reference position in each figure. However, pixels corresponding to the required number of pixels upward or downward from the reference position are used. You can print. At this time, if the number of pixels to be printed remains even when the pixels to be printed reach the uppermost pixel among the pixels arranged in the vertical direction, the pixels are directed upward from the lowest pixel. If the number of pixels to be printed remains, even if the pixels to be printed reach the lowest pixel among the pixels arranged in the vertical direction, In this case, a pixel to be printed downward from the uppermost pixel may be added.
- a halftone dot image print in which elongated images corresponding to the number of image data are arranged directly below the half cylindrical lens according to the shape of each semicylindrical lens.
- the arrangement is not limited to this as long as the dot image printed material corresponds.
- the corresponding range of the halftone image printed material may be arranged in a range that can be seen through the semicylindrical lens from the observation point.
- the width of the halftone image print corresponding to the semi-cylindrical lens varies depending on the position of the semi-cylindrical lens even if the pitch of the semi-cylindrical lens is constant.
- rectangular pixels are used as halftone dots.
- dot-like halftone dots may be used as long as adjacent halftone dots are closely arranged.
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Abstract
Description
まず、第1実施形態に係る立体画像印刷物について説明する。図1は、立体画像印刷物に用いられる網点画像印刷物3の作製方法を示した図である。図1(A)に示すように、ステレオカメラ1の各カメラ1a、1b、1c、1dを水平に配列するように設置して、被写体2を撮影する。図1(B)は、各カメラ1a~1dによって撮影された画像を示し、図1(B)のB-1は、カメラ1aによって撮影された画像G1、図1(B)のB-2は、カメラ1bによって撮影された画像G2、図1(B)のB-3は、カメラ1cによって撮影された画像G3、図1(B)のB-4は、カメラ1dによって撮影された画像G4である。これらの画像G1~G4は、使用されるレンチキュラーレンズの半円筒状レンズの個数に応じて、縦に分割される。
s11、s21、s31、s41、s12、s22、s32、s42、s13、s23、s33、s43、s14、s24、s34、s44、…
と配列する。
s11、s21、s31、s41をグループGr1、
s12、s22、s32、s42をグループGr2、
s13、s23、s33、s43をグループGr3、
s14、s24、s34、s44をグループGr4、
……
とすると、各グループGrをレンチキュラーレンズの半円筒状レンズの背面に配置されて、レンチキュラーレンズの背面全体にわたって配置されるように、上下左右方向に拡大ないし縮小して網点画像印刷物3とする。
次に、図4(B)を参照して、第2実施形態における網点画像印刷物3の網点印刷方法について説明する。第1実施形態では、図4(A)に示すように、二本の基準線6,6を細長画像の上下の縁から長さ1/4の位置に設定したが、基準線6の位置はこれに限られず、第2実施形態を示す図4(B)のように、基準線6をずらしてもよい。このとき、印刷すべき画素が、縦方向に配列されている20画素の中で、最も上の画素まで達してもなお印刷すべき画素数が残っている場合は、最も下の画素から上方へ向けて印刷する画素を加えていけばよく、また、印刷すべき画素が、縦方向に配列されている20画素の中で、最も下の画素まで達してもなお印刷すべき画素数が残っている場合は、最も上の画素から下方へ向けて印刷する画素を加えていけばよい。
続いて、図4(C)を参照して、第3実施形態における網点画像印刷物3の網点印刷方法について説明する。第1実施形態では、図4(A)に示すように、二本の基準線6,6を細長画像の上下の縁から長さ1/4の位置に設定しることにより、印刷すべき画素数をほぼ等分に分けて印刷したが、第3実施形態を示す図4(C)のように、上下の基準線6に割当てる階調表現画素数を、8画素と12画素というように均等にせず、各階調表現画素数の中央に各基準線6を設定してもよい。この場合、細長画像において印刷すべき画素数を、各基準線6に任意に割当ててよい。
続いて、図4(D)を参照して、第4実施形態における網点画像印刷物3の網点印刷方法について説明する。第1実施形態では、図4(A)に示すように、基準位置は、基準線6上に直線状に配置したが、第4実施形態を示す図4(D)のように、各細長画像の基準位置7をランダムに設定する。この場合、細長画像において印刷すべき画素数を、各基準線6に任意に割当ててよい。この構成により、レンチキュラーレンズ4側から画像の粗さが低減されて立体的に網点画像印刷物3を観察することができる。
図5(A)を参照して、第5実施形態における網点画像印刷物3の網点印刷方法について説明する。第5実施形態においては、細長画像の階調表現を行う最小単位の領域3aにおいて、印刷すべき画素数が、所定数未満、例えば10画素未満である場合には、基準線6を一本設定して、基準線6上にある画素の位置を基準位置とし、その基準位置を中心として、細長画像の長手方向の上下方向に網点を印刷する。その一方、細長画像の階調表現を行う最小単位の領域3aにおいて、印刷すべき画素数が、所定数以上、例えば10画素以上である場合には、基準線6を二本設定して、それらの基準線6上にある画素の位置を基準位置とし、その基準位置を中心として、細長画像の長手方向の上下方向に網点を印刷する。
さらに、図5(B)を参照して、第6実施形態における網点画像印刷物3の網点印刷方法について説明する。第6実施形態においては、細長画像の階調表現を行う最小単位の領域3aにおいて、連続して印刷される網点の画素数に上限(例えば、8画素)を設け、その上限を超えると、基準線6を二本から三本、四本と基準線6を増やすようにする。
図6及び図7を参照して、第7実施形態における網点画像印刷物3の網点印刷方法について説明する。第1~第6実施形態は、一つのグループGrでの隣接する領域3aにおける基準位置の設定に関するものであったが、第7実施形態は、複数のGrに渡って複数の半円筒状レンズ4bに対応する網点画像印刷物3における基準位置の設定に関する。
Claims (5)
- 複数の半円筒状レンズが連続的に配列されてなるレンチキュラーレンズと、
前記レンチキュラーレンズの背面に配置され、各半円筒状レンズに対応して複数の細長画像が連続的に配列された網点画像印刷物とを備え、
前記細長画像は、階調表現を行う最小単位の領域を含むとともに、各最小単位の領域に、色版ごとに複数の基準位置が設定され、基準位置ごとに連続して細長画像の長手方向に振幅変調スクリーンにより網点印刷されていることを特徴とする立体画像印刷物。 - 同じ半円筒状レンズに対応して配列された複数の細長画像における前記基準位置は、直線状に配置されていることを特徴とする請求項1に記載の立体画像印刷物。
- 隣接する半円筒状レンズに対応して配列された細長画像の直線的な前記基準位置は、互いにずれていることを特徴とする請求項2に記載の立体画像印刷物。
- 複数の半円筒状レンズが連続的に配列されてなるレンチキュラーレンズと、
前記レンチキュラーレンズの背面に配置され、各半円筒状レンズに対応して複数の細長画像が連続的に配列された網点画像印刷物とを備え、
前記細長画像は、階調表現を行う最小単位の領域を含むとともに、各最小単位の領域に、色版ごとに基準位置が設定され、基準位置ごとに連続して細長画像の長手方向に振幅変調スクリーンにより網点印刷されており、前記基準位置の数は、印刷される網点数に応じて異なっていることを特徴とする立体画像印刷物。 - 複数の半円筒状レンズが連続的に配列されてなるレンチキュラーレンズと、
前記レンチキュラーレンズの背面に配置され、各半円筒状レンズに対応して複数の細長画像が連続的に配列された網点画像印刷物とを備え、
前記細長画像は、階調表現を行う最小単位の領域を含むとともに、各最小単位の領域に、色版ごとに複数の基準位置が設定され、基準位置ごとに連続して細長画像の長手方向に振幅変調スクリーンにより網点印刷されており、前記基準位置は、細長画像によってずれていることを特徴とする立体画像印刷物。
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JP5040858B2 (ja) | 2008-01-08 | 2012-10-03 | 大日本印刷株式会社 | 立体画像印刷物 |
JP5343681B2 (ja) * | 2009-04-21 | 2013-11-13 | 大日本印刷株式会社 | 立体画像印刷表示装置 |
WO2011099211A1 (ja) * | 2010-02-12 | 2011-08-18 | 大日本印刷株式会社 | 立体画像印刷物、立体画像印刷表示装置、及び立体画像印刷物における網点画像印刷物の印刷方法 |
JP6268794B2 (ja) * | 2013-08-02 | 2018-01-31 | セイコーエプソン株式会社 | 三次元画像表示用のプログラム及び印刷装置 |
JP6375749B2 (ja) * | 2014-07-18 | 2018-08-22 | 大日本印刷株式会社 | 表示物 |
CN104273678B (zh) * | 2014-09-25 | 2016-06-01 | 中山市沙溪镇新顺怡印花绣花厂 | 可裸视立体印花图像的服装 |
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JPH09237055A (ja) * | 1996-02-29 | 1997-09-09 | Dainippon Printing Co Ltd | 立体用又は可変用印刷物 |
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US20110026115A1 (en) | 2011-02-03 |
CN101910938B (zh) | 2012-05-02 |
JP2009163035A (ja) | 2009-07-23 |
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