Patent US3663103A successfully refreshed from Google Patents.
US3663103A
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Production of a modified orthophotograph
Assignee: Canadian Patents and Development Ltd
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Filing: 1970-09-15
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Granted: 1972-05-16
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Expires: 1990-09-15
Abstract
Abstract A three-dimensional optical model is created from a stereo-pair of aerial photographs by projecting the photographs by means of two projectors, and a moving aperture scans the optical model. A photosensitive film is exposed to one of these beams and is shifted in a direction perpendicular to the plane of the film so that the portion of film that is being exposed intersects the optical model. Superimposed on the vertical shift motion of the film is a displacement tangential to the plane of the film, the amount of displacement being in a preselected relationship to the extent of the vertical shift, such preselected relationship preferably being a logarithmic one.
Inventors
- 👤 Stanley Hoover Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:39
CPC Classifications
G; G01; G01C; G01C11/00
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
92 words
A device for producing a modified orthophotograph, comprising a. means for obtaining from two photographs of an object forming a stereo-pair with each other the X-, Y- and Z-coordinates and information concerning the image of each detail of said object, including means for generating data corresponding to a true orthophotograph of said object, b. means for modifying said data by varying the value of each Xcoordinate of said data by an amount depending on the value of the corresponding said Z-coordinate, and c. means forming said modified orthophotograph from said modified data.
Claim 2
Independent Claim
92 words
A device for producing a modified orthophotograph, comprising a. means for obtaining from two photographs of an object forming a stereo-pair with each other the X-, Y- and Z-coordinates and information concerning the image of each detail of said object, including means for generating data corresponding to a true orthophotograph of said object, b. means for modifying said data by varying the value of each Xcoordinate of said data by an amount depending on the value of the corresponding said Z-coordinate, and c. means forming said modified orthophotograph from said modified data.
Claim 3
Dependent Claim
151 words
A device according to claim 1, wherein said data obtaining and generating means (a) comprises i. means for generating two beams of light having a common intersection point, each of said beams passing through one of said photographs, ii. means for placing said beam intersection point at successive X- and Y-coordinates of a plane, and iii. means for varying the Z-coordinate of said intersection point along a direction perpendicular to said plane; and wherein said forming means (c) comprise iv. a photo-sensitive film, v. a source of light and means for varying the intensity of said source of light in accordance with the intensity of one of said beams after passing through the respective one of said photographs, and vi. means for placing said source of light relative to said film at each of said modified X-coordinates coordinates anD each of said Y-coordinates of a second plane parallel to said film.
Claim 4
Dependent Claim
150 words
A device according to claim 1, wherein said data obtaining and generating means (a) comprise i. two projectors supported side-by-side for superimposing said photographs to create a three-dimensional optical model of said object, and ii. a base plate supporting said film and having means for shifting said base plate relative to said projectors with a first motion along a first path perpendicular to said film; wherein said modifying means (b) comprises iii. means for displacing said base plate with a second motion along a second path intersecting said first path, and iv. means interconnecting said shifting means and said displacing means to interrelate said first and second motions so that the amount of said second motion is dependent on the amount of said first motion; and wherein said forming means (c) comprise means for successively exposing portions of said film to light projecting the image of one of said photographs.
Claim 5
Dependent Claim
30 words
A device according to claim 3 wherein said exposing means comprises an aperture and means for moving said aperture in adjacent traces parallel to a scanning direction across said film.
Claim 6
Dependent Claim
42 words
A device according to claim 4 wherein said means for moving said aperture comprises carriage means provided with said aperture and movable in said scanning direction, and guide means for said carriage, movable in an indexing direction perpendicular to said scanning direction.
Claim 7
Dependent Claim
48 words
A device according to claim 3 wherein said interconnecting means comprises two parts, said parts comprising cam means and follower means for said cam means, one of said parts being fixed relative to said projectors, and the other of said parts being fixed relative to said base plate.
Claim 8
Dependent Claim
31 words
A device according to claim 6 wherein said cam means comprises a straight cam rail disposed parallel to a plane containing said first and second paths and inclined to said film.
Claim 9
Dependent Claim
28 words
A device according to claim 6, wherein said cam means comprises a cam rail disposed parallel to a plane containing said first and second paths and logarithmically curved.
Claim 10
Dependent Claim
35 words
A device according to claim 8, including linear cam means interposed between said logarithmic cam means and either said projectors or said base plate, said linear cam means including means for adjusting the ratio thereof.
Claim 11
Dependent Claim
26 words
A device according to claim 3, further comprising an optical system for viewing said optical model, said system having a binocular fixed relative to said projectors.
Claim 12
Dependent Claim
74 words
A device according to claim 3, further comprising, d. a second base plate for supporting a second photosensitive film and second means for successively exposing portions of said second film; e. means for projecting onto said second film a third image identical to the image of the stereo-mate of said one photograph; and f. coupling means for transferring the shift of the first base plate along said first path to said second base plate.
Claim 13
Dependent Claim
27 words
A device according to claim 11 wherein said means for projecting said third image comprises a third projector for holding a further photograph identical to said stereo-mate.
Claim 14
Dependent Claim
21 words
A device according to claim 11, wherein said coupling means comprises a mounting plate supporting said first and second base plates.
Claim 15
Dependent Claim
19 words
A device according to claim 11, wherein said second exposing means are coupled to the first mentioned exposure means.
Claim 16
Dependent Claim
144 words
A device according to claim 1, wherein said data obtaining and generating means (a) comprise i. a first cathode ray tube having a screen, and means for shifting said first CRT in a direction perpendicular to said screen, ii. two photo-sensitive cells, each of said cells being disposed to receive a beam emanating from a spot of light on said screen and passing through the respective one of said photographs, and iii. means for correlating the signals generated by said cells and providing a signal for driving said shifting means; and wherein said Forming means (c) comprise iv. a second cathode ray tube having means for controlling the intensity of the cathode ray of said second CRT, said controlling means being connected to one of said cells, and v. a photo-sensitive film disposed to be exposed by the cathode ray of said second CRT.
Claim 17
Dependent Claim
79 words
A device according to claim 15 wherein said data obtaining and generating means furthermore comprise an X-deflection signal generator and a Y-deflection signal generator, wherein said first CRT comprises a first X-deflection system and a first Y-deflection system and said second CRT comprises a second X-deflection system and a second Y-deflection system, said first and second X-deflection systems being connected to said X-deflection signal generator and said first and second Y-deflection systems being connected to said Y-deflection signal generator.
Claim 18
Dependent Claim
52 words
A device according to claim 16, wherein said modifying means comprise a modifier having two signal inputs and one signal output, one of said inputs being connected to said correlating means and the other of said inputs to said X-deflection signal generator, and said output being connected to said second X-deflection system.
Claim 19
Independent Claim
105 words
A device for producing a modified orthophotograph, comprising a. means for obtaining from two photographs of an object forming a stereo-pair with each other the X-, Y- and Z-coordinates and information concerning the image of each detail of said object, including means for generating data corresponding to a true orthophotograph of said object, b. means for modifying said data by introducing into each X-coordinate of said data a change related to the corresponding said Z-coordinate in accordance with a predetermined function, and c. means for forming said modified orthophotograph from said modified data, d. wherein said function comprises a logarithmic component and a linear component.
Claim 20
Independent Claim
105 words
A device for producing a modified orthophotograph, comprising a. means for obtaining from two photographs of an object forming a stereo-pair with each other the X-, Y- and Z-coordinates and information concerning the image of each detail of said object, including means for generating data corresponding to a true orthophotograph of said object, b. means for modifying said data by introducing into each X-coordinate of said data a change related to the corresponding said Z-coordinate in accordance with a predetermined function, and c. means for forming said modified orthophotograph from said modified data, d. wherein said function comprises a logarithmic component and a linear component.
Claim 21
Independent Claim
301 words
A device for producing a modified orthophotograph, comprising a. means for obtaining from two photographs of an object forming a stereo-pair with each other the X-, Y- and Z-coordinates and information concerning the image of each detail of said object, including means for generating data corresponding to a true orthophotograph of said object; b. means for modifying said data by introducing into each X-coordinate of said data a change related to the corresponding said Z-coordinate in accordance with a predetermined function; c. means for forming said modified orthophotograph from said modified data; d. wherein said data obtaining and generating means (a) comprise i. two projectors supported side-by-side for superimposing said photographs to create a three-dimensional optical model of said object, and ii. a base plate supporting said film and having means for shifting said base plate relative to said projectors with a first motion along a first path perpendicular to said film; e. wherein said modifying means (b) comprise iii. means for displacing said base plate with a second motion along a second path intersecting said first path, and iv. means interconnecting said shifting means and said displacing means to interrelate said first and second motions in accordance with said function; f. wherein said forming means (c) comprise means for successively exposing portions of said film to light projecting the image of one of said photographs; and g. wherein said interconnecting means comprise v. logarithmic cam means and follower means for said cam means, one of said cam and follower means being connected to said projectors, and the other of said cam and follower means being connected to said base plate, and vi. linear cam means interposed between said logarithmic cam means and either said projectors or said base plate, said linear cam means including means for adjusting the ratio thereof.
Claim 22
Independent Claim
301 words
A device for producing a modified orthophotograph, comprising a. means for obtaining from two photographs of an object forming a stereo-pair with each other the X-, Y- and Z-coordinates and information concerning the image of each detail of said object, including means for generating data corresponding to a true orthophotograph of said object; b. means for modifying said data by introducing into each X-coordinate of said data a change related to the corresponding said Z-coordinate in accordance with a predetermined function; c. means for forming said modified orthophotograph from said modified data; d. wherein said data obtaining and generating means (a) comprise i. two projectors supported side-by-side for superimposing said photographs to create a three-dimensional optical model of said object, and ii. a base plate supporting said film and having means for shifting said base plate relative to said projectors with a first motion along a first path perpendicular to said film; e. wherein said modifying means (b) comprise iii. means for displacing said base plate with a second motion along a second path intersecting said first path, and iv. means interconnecting said shifting means and said displacing means to interrelate said first and second motions in accordance with said function; f. wherein said forming means (c) comprise means for successively exposing portions of said film to light projecting the image of one of said photographs; and g. wherein said interconnecting means comprise v. logarithmic cam means and follower means for said cam means, one of said cam and follower means being connected to said projectors, and the other of said cam and follower means being connected to said base plate, and vi. linear cam means interposed between said logarithmic cam means and either said projectors or said base plate, said linear cam means including means for adjusting the ratio thereof.
References Cited (Backward Citations)
US3191170A
Cited
US3486820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |