CA1099098A - Stereophotographic process for producing works of sculpture - Google Patents
Stereophotographic process for producing works of sculptureInfo
- Publication number
- CA1099098A CA1099098A CA316,298A CA316298A CA1099098A CA 1099098 A CA1099098 A CA 1099098A CA 316298 A CA316298 A CA 316298A CA 1099098 A CA1099098 A CA 1099098A
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- Canada
- Prior art keywords
- stripes
- projectors
- pictures
- projected
- screens
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 102000016751 Fringe-like Human genes 0.000 claims abstract description 8
- 108050006300 Fringe-like Proteins 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000012790 confirmation Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/0037—Production of three-dimensional images
Abstract
2. Abstract of the Disclosure:
Improvements in a streophotographic process for producing works of sculpture by arranging a number of cameras and a number of projectors, each fitted with a screen having a number of parallel stripes, in a circle around an object so as to face the latter, taking pictures of the object simultaneously with the cameras while the striped screens are being projected thereon by the pro-jectors, replacing the projectors and cameras by an increased number of projectors arranged in similar posi-tions to face instead a mass of material to be modeled which is placed at the center, projecting the pictures as well as the screens fitted in the projectors on the mass of material, and then modeling the material until the stripes of the same sources on the screens and pictures projected are in coincidence on the material surface. The improved process is characterized in that each pair of adjacent projectors are fitted with pictures, one for each, or a picture for one and a screen for the other to match, when projected, on the material surface, either picture or screen being positive and the other being negative, only such matchable projectors are lighted to project stripes s"' which combine the stripes s' and s" of the positives and negatives in coincidence and also fringelike pro-jections of unusual brightness and darkness appearing on both sides of the stripes s"' as indications of unmatched stripes, and then the material is modeled by eliminating the portions represented by the projections until an original model of uniform lightness is reached.
Improvements in a streophotographic process for producing works of sculpture by arranging a number of cameras and a number of projectors, each fitted with a screen having a number of parallel stripes, in a circle around an object so as to face the latter, taking pictures of the object simultaneously with the cameras while the striped screens are being projected thereon by the pro-jectors, replacing the projectors and cameras by an increased number of projectors arranged in similar posi-tions to face instead a mass of material to be modeled which is placed at the center, projecting the pictures as well as the screens fitted in the projectors on the mass of material, and then modeling the material until the stripes of the same sources on the screens and pictures projected are in coincidence on the material surface. The improved process is characterized in that each pair of adjacent projectors are fitted with pictures, one for each, or a picture for one and a screen for the other to match, when projected, on the material surface, either picture or screen being positive and the other being negative, only such matchable projectors are lighted to project stripes s"' which combine the stripes s' and s" of the positives and negatives in coincidence and also fringelike pro-jections of unusual brightness and darkness appearing on both sides of the stripes s"' as indications of unmatched stripes, and then the material is modeled by eliminating the portions represented by the projections until an original model of uniform lightness is reached.
Description
~oq9~98 This invention relates to improvements in a process for producing works of sculpture on the basis of stereo-scopic photography.
One of the stereophotographic processes known in the art for manufacturing statuary is as follows. Some pro-jectors and some cameras are alternately arranged in a circle around an object to face it concentrically. Each of the projectors is fitted with a screen having a number of parallel vertical lines or stripes as indicated in FIG. 2, and the projectors throw the striped patterns of the screens on the object at the center. ~he object in this state is photographed simultaneously with the cameras.
(For the purposes of the invention the procedure up to this point is called a "photographing step".) Next, the object is replaced by a mass of material to be modeled to form a work of sculpture, that is, an original model on the basis of stereophotography. At the same time, the cameras are removed and the same number of additional projectors are installed at the corresponding points.
The additional projectors are loaded with the positives of the pictures taken by the cameras in the same positions, whereas the original projectors remain fitted with the screens. Either the pictures alone or the pictures and the screens are projected on the material surface. Each picture represents the pattern of parallel stripes of the screen projected from the same point against the object and photographed, in the preceding photographing step, as deformed according to the surface configurations of the object. For example, if the object is a spherical body and screens of the pattern as shown in FIG. 2 are projected 10~98 on it from both sides of a camera, the parallel stripes of the two screens will be photographed as defor~ed to curves as indicated in FIG. 4. Now if either two such pictures or one such screen and one such picture are projected on a mass of material by the same projectors, the material surface will look striped in black. The operator or sculptor then models the material, building up or cutting it away, so that the black stripes projected separately will meet and coincide on the material surface, when the material takes the form of an original model analogous to the object. This is a conventional process for producing statuary on the basis of stereoscopic photography.
The process renders it necessary for the sculptor to check every stripe on the material being modeled and make certain that the stripe patterns on the finished model are in perfect coincidence, even in the edge portions. This adds greatly to the production time. In addition, because frequent overlook of unmatched stripes can result from the complexity and indistinctness of the overlapping patterns, the original model thus obtained stereophotographically is sometimes not an exact replica of the object.
The present invention aims at improving the afore-described stereophotographic process for producing works of sculpture, and at providing a process whereby the production time is shortened and an original model is obtained which is a very fine replica of the object.
According to the invention, a stereophotographic process for producing works of sculpture is provided which ~0"9~98 comprises arranging a number of cameras and a number of projectors, each fitted with a screen having a number of parallel stripes, in a circle around an object so as to face the latter, taking pictures of the object simul-taneously with the cameras while the striped screens are being projected thereon by the projectors, replacing the projectors and cameras by an increased number of pro-jectors, replacing the projectors and cameras by an increased number of projectors arranged in similar posi-tions to face instead a mass of material to be modeled which is placed at the center, projecting the pictures as well as the screens fitted in the projectors on the mass of material, and then modeling the material until the stripes of the same sources on the screens and pictures projected are in coincidence on the material surface, characterized in that each pair of adjacent projectors are fitted with pictures, one for each, or a picture for one and a screen for the other to match, when projected, on the material surface, either picture or screen being positive and the other being negative, only such matchable projectors are lighted to project stripes s"' which combine the stripes s' and s" of the positives and negatives in coincidence and also fringelike projections of unusual brightness and darkness appearing on both sides of the stripes s"' as indications of unmatched stripes, and then the material is modeled by eliminating the portions re-presented by the projections until an original model of uniform lightness is reached.
Other objects and advantages of the invention will become more apparent from the following description taken lQ~ !8 in conjunction with the accompanying drawings showing embodiments thereof. In the drawings:
FIG. 1 is a plan view of an arrangement for stereo-photographically taking pictures of an object in accor-dance with the process of the invention;
FIG. 2 is a front view of a typical screen;
FIG. 3 is a plan view of a spherical body placed instead of a figure as an object on which beams of light through a plurality of screens are cast;
FIG. 4 is a front view of the same object;
FIG. 5 is a plan view of an arrangement for making an original model on the basis of stereophotography;
FIG. 6 is an explanatory view of a mass of material to be modeled on which a stripe sn of a negative picture Fn+2 and a stripe sn of a positive picture Fn are projected, forming a coincident stripe sn';
FIG. 7 is an explanatory view of a mass of material on which a stripe sn of a positive screen S3 and a stripe sn of a negative picture Fn are projected, forming a coincident stripe sn~;
FIG. 8 is an explanatory view of a mass of material on which a stripe Sn of a positive picture Fn and a stripe Sn of a negative screen Sn are projected, forming a coincident stripe sn';
FIG. 9 is an explanatory view of a stripe sn' having fringelike projections in white W and in black B along its both sides as indications of incomplete coincidence of the two stripes projected on the material surface;
FIG. 10 is an explanatory view of a completely coincident stripe sn' on the material surface; and ~099~8 FIG. 11 is a photographic portrait with stripes as represented in FIG. 9.
The method according to the invention comprises two steps of (1) taking pictures of an object and (2) making an original model on the basis of a stereophotographic image of the object, as will be described in detail below.
(1) Step of taking pictures of an object This step will be explained with reference to FIGS.
1 to 4 of the accompanying drawings. First, around an object O (a ball being shown here in place of a figure for the sake of simplicity), a plurality of cameras Cl,
One of the stereophotographic processes known in the art for manufacturing statuary is as follows. Some pro-jectors and some cameras are alternately arranged in a circle around an object to face it concentrically. Each of the projectors is fitted with a screen having a number of parallel vertical lines or stripes as indicated in FIG. 2, and the projectors throw the striped patterns of the screens on the object at the center. ~he object in this state is photographed simultaneously with the cameras.
(For the purposes of the invention the procedure up to this point is called a "photographing step".) Next, the object is replaced by a mass of material to be modeled to form a work of sculpture, that is, an original model on the basis of stereophotography. At the same time, the cameras are removed and the same number of additional projectors are installed at the corresponding points.
The additional projectors are loaded with the positives of the pictures taken by the cameras in the same positions, whereas the original projectors remain fitted with the screens. Either the pictures alone or the pictures and the screens are projected on the material surface. Each picture represents the pattern of parallel stripes of the screen projected from the same point against the object and photographed, in the preceding photographing step, as deformed according to the surface configurations of the object. For example, if the object is a spherical body and screens of the pattern as shown in FIG. 2 are projected 10~98 on it from both sides of a camera, the parallel stripes of the two screens will be photographed as defor~ed to curves as indicated in FIG. 4. Now if either two such pictures or one such screen and one such picture are projected on a mass of material by the same projectors, the material surface will look striped in black. The operator or sculptor then models the material, building up or cutting it away, so that the black stripes projected separately will meet and coincide on the material surface, when the material takes the form of an original model analogous to the object. This is a conventional process for producing statuary on the basis of stereoscopic photography.
The process renders it necessary for the sculptor to check every stripe on the material being modeled and make certain that the stripe patterns on the finished model are in perfect coincidence, even in the edge portions. This adds greatly to the production time. In addition, because frequent overlook of unmatched stripes can result from the complexity and indistinctness of the overlapping patterns, the original model thus obtained stereophotographically is sometimes not an exact replica of the object.
The present invention aims at improving the afore-described stereophotographic process for producing works of sculpture, and at providing a process whereby the production time is shortened and an original model is obtained which is a very fine replica of the object.
According to the invention, a stereophotographic process for producing works of sculpture is provided which ~0"9~98 comprises arranging a number of cameras and a number of projectors, each fitted with a screen having a number of parallel stripes, in a circle around an object so as to face the latter, taking pictures of the object simul-taneously with the cameras while the striped screens are being projected thereon by the projectors, replacing the projectors and cameras by an increased number of pro-jectors, replacing the projectors and cameras by an increased number of projectors arranged in similar posi-tions to face instead a mass of material to be modeled which is placed at the center, projecting the pictures as well as the screens fitted in the projectors on the mass of material, and then modeling the material until the stripes of the same sources on the screens and pictures projected are in coincidence on the material surface, characterized in that each pair of adjacent projectors are fitted with pictures, one for each, or a picture for one and a screen for the other to match, when projected, on the material surface, either picture or screen being positive and the other being negative, only such matchable projectors are lighted to project stripes s"' which combine the stripes s' and s" of the positives and negatives in coincidence and also fringelike projections of unusual brightness and darkness appearing on both sides of the stripes s"' as indications of unmatched stripes, and then the material is modeled by eliminating the portions re-presented by the projections until an original model of uniform lightness is reached.
Other objects and advantages of the invention will become more apparent from the following description taken lQ~ !8 in conjunction with the accompanying drawings showing embodiments thereof. In the drawings:
FIG. 1 is a plan view of an arrangement for stereo-photographically taking pictures of an object in accor-dance with the process of the invention;
FIG. 2 is a front view of a typical screen;
FIG. 3 is a plan view of a spherical body placed instead of a figure as an object on which beams of light through a plurality of screens are cast;
FIG. 4 is a front view of the same object;
FIG. 5 is a plan view of an arrangement for making an original model on the basis of stereophotography;
FIG. 6 is an explanatory view of a mass of material to be modeled on which a stripe sn of a negative picture Fn+2 and a stripe sn of a positive picture Fn are projected, forming a coincident stripe sn';
FIG. 7 is an explanatory view of a mass of material on which a stripe sn of a positive screen S3 and a stripe sn of a negative picture Fn are projected, forming a coincident stripe sn~;
FIG. 8 is an explanatory view of a mass of material on which a stripe Sn of a positive picture Fn and a stripe Sn of a negative screen Sn are projected, forming a coincident stripe sn';
FIG. 9 is an explanatory view of a stripe sn' having fringelike projections in white W and in black B along its both sides as indications of incomplete coincidence of the two stripes projected on the material surface;
FIG. 10 is an explanatory view of a completely coincident stripe sn' on the material surface; and ~099~8 FIG. 11 is a photographic portrait with stripes as represented in FIG. 9.
The method according to the invention comprises two steps of (1) taking pictures of an object and (2) making an original model on the basis of a stereophotographic image of the object, as will be described in detail below.
(1) Step of taking pictures of an object This step will be explained with reference to FIGS.
1 to 4 of the accompanying drawings. First, around an object O (a ball being shown here in place of a figure for the sake of simplicity), a plurality of cameras Cl,
2, C3 ... Cn and a plurality of projectors Pl, P2, P3 ... equipped, respectively, with screens Sl, S2, S3 ...
Snr each of which has parallel vertical lines or stripes sl, s2, s3 .... sn as shown in FIG. 2, are arranged at suitable points in a circle, with their faces directed to the object O at the center. Now if the projectors Pl, P2, P3 ... throw beams of light through their screens Sl S2, S3 ... on the object O, the parallel stripes of the respective screens will appear on the ball surface, as represented by a plan view in FIG. 3 and by a front view in FIG. 4. The object O with such projected patterns on its spherical surface is photographed by the cameras Cl, C2, C3 -- Cn.
The pictures taken with the cameras Cl, C2, C3 Cn are herein called Fl, F2, F3 ... Fn~ respectively.
Also, positives of the screens Sl, S2, S3 ... Sn de-1, S2, S3 ... Sn, negatives of the screens Sl, S2, S3 ... Sn, and positives Fl, F2, F3 ... Fn and g i~ F2~ F3 ... Fn of the pictures Fl, F2, F
1099q~98 ... Fn are prepared. In the embodiment being described Sl, S2, S3 ... Sn correspond to the positives and are substantially the same as Si, S2, S3 ... Sn.
The designation by the symbols is merely by way of illustration.
(2) Step of making an original model of stereophoto-graphic image This step will be explained with reference to FIGS.
5 through 11.
s Sl, S2, S3 ... Sn used in the preceding step of picture taking and the positives or negatives of the photographs Fl, F2, F3 ... Fn are set, respectively, in the projectors Pl, P2, P3 ... and in additional pro-j ors Pi, P2, P3 ... Pn. The projectors are made ready to project beams of light through the positives or negatives on a mass of material O' to form an original model on the basis of the stereophotographic image of the object, and are so arranged as to be switched on and off individually. These projectors Pl, P2, P3 and P;, P2, P3 .... Pn are installed at points generally coincident with the positions the projectors Pl, P2, P3 and the s Cl, C2, C3 ... Cn occupied during the photo-graphing step. (Refer to FIGS. 1 and 5.) In this case, there is a free choice of positives or negatives for the screens and pictures. To be more exact, there are alternatives of Si or Sl, S2 or S2, S3 or S'3 and Fi or Fl, F2 or F2, F3 or F'3 ... , which may be replaced with each other as desired.
Following the preparation as above described, the projectors are switched on or off in such a manner that, 1099~98 of the two or more projectors which throw overlapping pictures or screens on the surface of the material O' to be modeled, each adjacent pair of projectors or every other or every third projectors are lighted, while the rest is all put off. Also, where either the picture or screen in a projector is a positive,a negative is used for the other. In this way the corresponding stripes from the same sources of the pictures or screens are projected on the mass of material, and therefore the operator or sculptor models the material by building up or reducing it until an original form on which the stripes coincide is reached. FIG. 6 shows that a stripe (curve) Sn of a negative picture Fn+2 and a stripe (curve~ sn of a positive picture Fn being projected on a mass of material that has been modeled so that the two stripes are matched, forming a coincident stripe sn' on the material surface. FIG. 7 shows a stripe (curve) Sn of a negative picture Fn and a stripe (straight) Sn of a positive screen S3 projected and matched by similar modeling, thus forming a single stripe Sn', on a mass of material. In FIG. 8 is shown a stripe sn' similarly obtained on a mass of material by projecting a stripe (straight) sn of a negative screen Sn and a stripe (curve) sn of a positive picture Fn and by modeling the material until the two stripes coincide.
In the afore-described step, as can be seen from FIG. 9 (and also from FIG. 11), the coincidént stripe sn' will have fringelike projections of unusual brightness or darkness on both sides. For example, where white light sources are used, the projections look white ~ and/or black B.
109~8 This means that the stripes sn and sn are not in perfect coincidence. The portions of the material represented by the white projections W and/or the black projections B must be built up or cut away until the stripes sn and Sn meet exactly as indicated in FIG. 10. Then, the stripe sn' is uniform, with its both sides free of the fringelike white projections W or black projections B.
The stripe sn' is now as bright as the portions of the material surface along its both sides. Extension of such a condition from stripe to stripe will produce a growing region of the same brightness (for example in gray).
In this step, the modeling up to the coincidence of all stripes sl', s'2', s'3' ... sn in the manner described will remove the stripe patterns from the material surface, enabling the form to be lighted to uniform brightness.
A model based on stereophotography and which is a practically exact replica of the object O is thus obtained.
For the present process it is not essential that all positive and negative pictures and screens be used in the second step. Therefore, all of the positive and negative pictures are not necessarily made in the first step of picture taking; it is merely necessary to prepare most of the pictures in positive and negative.
According to the invention, as described above, screens having a number of stripes each are projected on an object, the striped object is photographed with a number of cameras, and positives and negatives of the screens and pictures are made. Next, those pictures and screens are projected on a mass of material to be modeled so as to produce an original model. At this time, 9~98 either of the adjacent pair of pxojectors uses a positive and the other a negative and then project them together in a matching fashion. Unmatched portions are represented by fringelike projections of unusual brightness and darkness from both sides of each stripe projected on the material surface. This representation provides a clear distinction between coincident and uncoincident portions of the stripes. Accordingly, the mass of material is modeled until the too bright and dark sidewise projections disappear from all of the stripes. The surface region of the material where the stripes are truly coincident is of uniform lightness, in contrast with the region of uncoincident stripes where the stripe patterns remain to be seen at a glance. Therefore, as compared with the prior art process which requires confirmation of indi-vidual projected stripes to make sure of the complete finish of the model, the process of the invention permits easy and rapid ascertainment of the coincidence, and hence shortening of the production period and manufacture of works of sculpture exceedingly accurate and true to the objects, on the basis of stereophotography.
Snr each of which has parallel vertical lines or stripes sl, s2, s3 .... sn as shown in FIG. 2, are arranged at suitable points in a circle, with their faces directed to the object O at the center. Now if the projectors Pl, P2, P3 ... throw beams of light through their screens Sl S2, S3 ... on the object O, the parallel stripes of the respective screens will appear on the ball surface, as represented by a plan view in FIG. 3 and by a front view in FIG. 4. The object O with such projected patterns on its spherical surface is photographed by the cameras Cl, C2, C3 -- Cn.
The pictures taken with the cameras Cl, C2, C3 Cn are herein called Fl, F2, F3 ... Fn~ respectively.
Also, positives of the screens Sl, S2, S3 ... Sn de-1, S2, S3 ... Sn, negatives of the screens Sl, S2, S3 ... Sn, and positives Fl, F2, F3 ... Fn and g i~ F2~ F3 ... Fn of the pictures Fl, F2, F
1099q~98 ... Fn are prepared. In the embodiment being described Sl, S2, S3 ... Sn correspond to the positives and are substantially the same as Si, S2, S3 ... Sn.
The designation by the symbols is merely by way of illustration.
(2) Step of making an original model of stereophoto-graphic image This step will be explained with reference to FIGS.
5 through 11.
s Sl, S2, S3 ... Sn used in the preceding step of picture taking and the positives or negatives of the photographs Fl, F2, F3 ... Fn are set, respectively, in the projectors Pl, P2, P3 ... and in additional pro-j ors Pi, P2, P3 ... Pn. The projectors are made ready to project beams of light through the positives or negatives on a mass of material O' to form an original model on the basis of the stereophotographic image of the object, and are so arranged as to be switched on and off individually. These projectors Pl, P2, P3 and P;, P2, P3 .... Pn are installed at points generally coincident with the positions the projectors Pl, P2, P3 and the s Cl, C2, C3 ... Cn occupied during the photo-graphing step. (Refer to FIGS. 1 and 5.) In this case, there is a free choice of positives or negatives for the screens and pictures. To be more exact, there are alternatives of Si or Sl, S2 or S2, S3 or S'3 and Fi or Fl, F2 or F2, F3 or F'3 ... , which may be replaced with each other as desired.
Following the preparation as above described, the projectors are switched on or off in such a manner that, 1099~98 of the two or more projectors which throw overlapping pictures or screens on the surface of the material O' to be modeled, each adjacent pair of projectors or every other or every third projectors are lighted, while the rest is all put off. Also, where either the picture or screen in a projector is a positive,a negative is used for the other. In this way the corresponding stripes from the same sources of the pictures or screens are projected on the mass of material, and therefore the operator or sculptor models the material by building up or reducing it until an original form on which the stripes coincide is reached. FIG. 6 shows that a stripe (curve) Sn of a negative picture Fn+2 and a stripe (curve~ sn of a positive picture Fn being projected on a mass of material that has been modeled so that the two stripes are matched, forming a coincident stripe sn' on the material surface. FIG. 7 shows a stripe (curve) Sn of a negative picture Fn and a stripe (straight) Sn of a positive screen S3 projected and matched by similar modeling, thus forming a single stripe Sn', on a mass of material. In FIG. 8 is shown a stripe sn' similarly obtained on a mass of material by projecting a stripe (straight) sn of a negative screen Sn and a stripe (curve) sn of a positive picture Fn and by modeling the material until the two stripes coincide.
In the afore-described step, as can be seen from FIG. 9 (and also from FIG. 11), the coincidént stripe sn' will have fringelike projections of unusual brightness or darkness on both sides. For example, where white light sources are used, the projections look white ~ and/or black B.
109~8 This means that the stripes sn and sn are not in perfect coincidence. The portions of the material represented by the white projections W and/or the black projections B must be built up or cut away until the stripes sn and Sn meet exactly as indicated in FIG. 10. Then, the stripe sn' is uniform, with its both sides free of the fringelike white projections W or black projections B.
The stripe sn' is now as bright as the portions of the material surface along its both sides. Extension of such a condition from stripe to stripe will produce a growing region of the same brightness (for example in gray).
In this step, the modeling up to the coincidence of all stripes sl', s'2', s'3' ... sn in the manner described will remove the stripe patterns from the material surface, enabling the form to be lighted to uniform brightness.
A model based on stereophotography and which is a practically exact replica of the object O is thus obtained.
For the present process it is not essential that all positive and negative pictures and screens be used in the second step. Therefore, all of the positive and negative pictures are not necessarily made in the first step of picture taking; it is merely necessary to prepare most of the pictures in positive and negative.
According to the invention, as described above, screens having a number of stripes each are projected on an object, the striped object is photographed with a number of cameras, and positives and negatives of the screens and pictures are made. Next, those pictures and screens are projected on a mass of material to be modeled so as to produce an original model. At this time, 9~98 either of the adjacent pair of pxojectors uses a positive and the other a negative and then project them together in a matching fashion. Unmatched portions are represented by fringelike projections of unusual brightness and darkness from both sides of each stripe projected on the material surface. This representation provides a clear distinction between coincident and uncoincident portions of the stripes. Accordingly, the mass of material is modeled until the too bright and dark sidewise projections disappear from all of the stripes. The surface region of the material where the stripes are truly coincident is of uniform lightness, in contrast with the region of uncoincident stripes where the stripe patterns remain to be seen at a glance. Therefore, as compared with the prior art process which requires confirmation of indi-vidual projected stripes to make sure of the complete finish of the model, the process of the invention permits easy and rapid ascertainment of the coincidence, and hence shortening of the production period and manufacture of works of sculpture exceedingly accurate and true to the objects, on the basis of stereophotography.
Claims (2)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In a stereophotographic process for producing works of sculpture by arranging a number of cameras and a number of projectors, each fitted with a screen having a number of parallel stripes, in a circle around an object so as to face the latter, taking pictures of said object simultaneously with said cameras while said striped screens are being projected thereon by said projectors, replacing said projectors and cameras by an increased number of projectors arranged in similar positions to face instead a mass of material to be modeled which is placed at the center, projecting the pictures as well as said screens fitted in said projectors on said mass of material, and then modeling said material until the stripes of the same sources on said screens and pictures projected are in coincidence on the material surface, the improvement which comprises fitting each pair of adjacent projectors with pictures, one for each, or a picture for one and a screen for the other to match, when projected, on said material surface, either picture or screen being positive and the other being negative, lighting only such matchable projectors to project stripes s"' which combine the stripes s' and s" of said positives and negatives in coincidence and also fringelike projections of unusual brightness and darkness appearing on both sides of said stripes s"' as indications of unmatched stripes, and then modeling said material by eliminating the portions represented by said projections until an original model of uniform lightness is reached.
2. A process according to claim 1, wherein said fringelike projections of unusual brightness and darkness appearing on both sides of said stripes s"' as indications of unmatched stripes are white and black.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22503/1978 | 1978-02-28 | ||
| JP53022503A JPS5946374B2 (en) | 1978-02-28 | 1978-02-28 | Three-dimensional photographic image production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1099098A true CA1099098A (en) | 1981-04-14 |
Family
ID=12084539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA316,298A Expired CA1099098A (en) | 1978-02-28 | 1978-11-15 | Stereophotographic process for producing works of sculpture |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US4239359A (en) |
| JP (1) | JPS5946374B2 (en) |
| AU (1) | AU520846B2 (en) |
| BR (1) | BR7808477A (en) |
| CA (1) | CA1099098A (en) |
| DE (1) | DE2852097C2 (en) |
| FR (1) | FR2418099B1 (en) |
| GB (1) | GB2016165B (en) |
| HK (1) | HK7583A (en) |
| IT (1) | IT1106399B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4294634A (en) * | 1980-04-01 | 1981-10-13 | Byun Mookil | Method for manufacturing a solid statue |
| JPS5822194A (en) * | 1981-08-01 | 1983-02-09 | Kazuo Iwashita | Poster and its formation |
| US4630910A (en) * | 1984-02-16 | 1986-12-23 | Robotic Vision Systems, Inc. | Method of measuring in three-dimensions at high speed |
| JPS62188785U (en) * | 1986-05-22 | 1987-12-01 | ||
| JPH01113744A (en) * | 1987-10-27 | 1989-05-02 | Ritsutai Shiyashinzou Kk | Method and device for producing stereoscopic photographic image |
| GB8827952D0 (en) * | 1988-11-30 | 1989-01-05 | Screen Form Inc | Display device |
| AU656851B2 (en) * | 1992-07-02 | 1995-02-16 | Rexam Closure Systems Inc. | Child resistant reminder closure |
| US7843497B2 (en) * | 1994-05-31 | 2010-11-30 | Conley Gregory J | Array-camera motion picture device, and methods to produce new visual and aural effects |
| US5659323A (en) | 1994-12-21 | 1997-08-19 | Digital Air, Inc. | System for producing time-independent virtual camera movement in motion pictures and other media |
| JP2813796B2 (en) | 1995-11-10 | 1998-10-22 | 立体写真像株式会社 | Relief photo statue production method |
| US7555157B2 (en) * | 2001-09-07 | 2009-06-30 | Geoff Davidson | System and method for transforming graphical images |
| US9742991B2 (en) | 2013-05-24 | 2017-08-22 | Robert Frank Latorre | 360 degree photobooth kiosk |
| CN106993160B (en) * | 2017-04-11 | 2021-02-19 | 石东海 | Live show platform of TV |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US891013A (en) * | 1907-01-25 | 1908-06-16 | John Hammond Smith | Method of reproducing objects. |
| US1527733A (en) * | 1924-05-21 | 1925-02-24 | Heise Wilhelm | Process for the production of sculptures |
| US1719483A (en) * | 1927-09-21 | 1929-07-02 | Morioka Isao | Photographic method of reproducing original objects |
| US2015457A (en) * | 1932-03-02 | 1935-09-24 | Morioka Isao | Process for manufacturing a relief by the aid of photography |
| US2350796A (en) * | 1940-03-26 | 1944-06-06 | Morioka Isao | Process for plastically reproducing objects |
| US3185602A (en) * | 1962-02-06 | 1965-05-25 | Morioka Isao | Method of manufacturing reliefs by photographic means |
| US3580758A (en) * | 1967-05-09 | 1971-05-25 | Isao Morioka | Method for reproducing three-dimensional image |
-
1978
- 1978-02-28 JP JP53022503A patent/JPS5946374B2/en not_active Expired
- 1978-11-15 CA CA316,298A patent/CA1099098A/en not_active Expired
- 1978-11-21 AU AU41751/78A patent/AU520846B2/en not_active Expired
- 1978-11-27 GB GB7846166A patent/GB2016165B/en not_active Expired
- 1978-11-29 FR FR7833712A patent/FR2418099B1/en not_active Expired
- 1978-11-30 DE DE2852097A patent/DE2852097C2/en not_active Expired
- 1978-12-07 IT IT52232/78A patent/IT1106399B/en active
- 1978-12-26 BR BR7808477A patent/BR7808477A/en unknown
-
1979
- 1979-02-01 US US06/008,534 patent/US4239359A/en not_active Expired - Lifetime
-
1983
- 1983-03-03 HK HK75/83A patent/HK7583A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU4175178A (en) | 1979-09-06 |
| BR7808477A (en) | 1980-05-20 |
| DE2852097A1 (en) | 1979-08-30 |
| FR2418099B1 (en) | 1985-10-04 |
| JPS54115231A (en) | 1979-09-07 |
| AU520846B2 (en) | 1982-03-04 |
| HK7583A (en) | 1983-03-03 |
| IT1106399B (en) | 1985-11-11 |
| GB2016165A (en) | 1979-09-19 |
| US4239359A (en) | 1980-12-16 |
| FR2418099A1 (en) | 1979-09-21 |
| IT7852232A0 (en) | 1978-12-07 |
| GB2016165B (en) | 1982-06-09 |
| DE2852097C2 (en) | 1982-12-02 |
| JPS5946374B2 (en) | 1984-11-12 |
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