Color tv film reproduction system compatible with diffraction process color projection systems

Claim 1

A method of spectral zonal photography, comprising: exposing a photosensitive material responsive to radiation in all spectral zones desired to be recorded to an additive superposition of spectral separation images formed in radiation propagating from a photographed scene in at least three different zones of the electromagnetic spectrum; during the said exposure operation, causing a periodic grating function To be multiplied with each of said separation images but at a predetermined different azimuthal line orientation for each image, the said azimuthal line orientation of the grating function associated with each of said separation images making a substantial angle with respect to horizontal and vertical lines in the photographed scene; and developing the exposed photosensitive material to form a record containing said separation images respectively modulating azimuthally distinct spatial carriers each making a substantial angle with respect to scene horizontal and vertical lines.

Claim 2

A method of spectral zonal photography, comprising: exposing a photosensitive material responsive to radiation in all spectral zones desired to be recorded to an additive superposition of spectral separation images formed in radiation propagating from a photographed scene in at least three different zones of the electromagnetic spectrum; during the said exposure operation, causing a periodic grating function To be multiplied with each of said separation images but at a predetermined different azimuthal line orientation for each image, the said azimuthal line orientation of the grating function associated with each of said separation images making a substantial angle with respect to horizontal and vertical lines in the photographed scene; and developing the exposed photosensitive material to form a record containing said separation images respectively modulating azimuthally distinct spatial carriers each making a substantial angle with respect to scene horizontal and vertical lines.

Claim 3

A method of spectral zonal photography, comprising: exposing a photosensitive material responsive to radiation in all spectral zones desired to be recorded to a scene multiplied with a spectral zonal encoder comprising at least three mutually coextensive, azimuthally distinct periodic arrays of filter elements each having a preferential absorption for a different spectral zone, each of said periodic arrays of filter elements making a substantial angle with respect to horizontal and vertical lines in the photographed scene; and developing exposed photosensitive material to form a record containing said separation images respectively modulating azimuthally distinct spatial carriers.

Claim 4

A method of spectral zonal photography, comprising: exposing a photosensitive material responsive to radiation in all spectral zones desired to be recorded to a scene multiplied with a spectral zonal encoder comprising at least three mutually coextensive, azimuthally distinct periodic arrays of filter elements each having a preferential absorption for a different spectral zone, each of said periodic arrays of filter elements making a substantial angle with respect to horizontal and vertical lines in the photographed scene; and developing exposed photosensitive material to form a record containing said separation images respectively modulating azimuthally distinct spatial carriers.

Claim 5

A method of color photography using monochrome or other recording materials which do not exhibit, when developed, recorded color values in color, comprising: exposing a photosensitive material responsive to radiation in all spectral zones desired to be recorded to a scene multiplied with a spectral zonal filter comprising mutually coextensive, periodic arrays of cyan, yellow, and magenta filter elements arranged in a substantially 0*, 45*, 90* geometry relative to each other, said geometry being given an angular displacement in the range of 0* to 45* relative to the exposed scene image such that each of said arrays of filter elements makes a substantial angle with respect to horizontal and vertical lines in the photographed scene, whereby horizontal or vertical lines or patterns in the scene will not function to introduce a false color coding of the scene image; and developing said photosensitive material to form a record containing red, blue, and green color separation images respectively modulating azimuthally distinct spatial carriers.

Claim 6

A method of color photography using monochrome or other recording materials which do not exhibit, when developed, recorded color values in color, comprising: exposing a photosensitive material responsive to radiation in all spectral zones desired to be recorded to a scene multiplied with a spectral zonal filter comprising mutually coextensive, periodic arrays of cyan, yellow, and magenta filter elements arranged in a substantially 0*, 45*, 90* geometry relative to each other, said geometry being given an angular displacement in the range of 0* to 45* relative to the exposed scene image such that each of said arrays of filter elements makes a substantial angle with respect to horizontal and vertical lines in the photographed scene, whereby horizontal or vertical lines or patterns in the scene will not function to introduce a false color coding of the scene image; and developing said photosensitive material to form a record containing red, blue, and green color separation images respectively modulating azimuthally distinct spatial carriers.

Claim 8

A method of color photography for recording color scenes on monochrome or other recording materials which do not exhibit, when developed, recorded color values in color, comprising: locating at a recording plane a photosensitive material responsive to radiation in all spectral zones desired to be recorded; effecting a multiple exposure of said photosensitive material by, in succession, forming an image of said photographic object on said photosensitive material in radiation in each of a plurality of spectral zones to which said photosensitive material is responsive; during each of said multiple exposures of said photosensitive material, locating at said recording plane a grating having a spatial frequency resolvable by said photosensitive material; during each exposure of said photosensitive material, causing the grating to have a different relative azimuthal orientation but an azimuthal orientation which makes a substantial angle with respect to horizontal and vertical lines in the photographed scene; and developing the multiple latent color separation images thus formed in said photosensitive material to produce a record containing a plurality of additively superimposed color separation images each of which modulates a spatial carrier having a different azimuthal orientation.

Claim 9

A method of color photography for recording color scenes on monochrome or other recording materials which do not exhibit, when developed, recorded color values in color, comprising: locating at a recording plane a photosensitive material responsive to radiation in all spectral zones desired to be recorded; effecting a multiple exposure of said photosensitive material by, in succession, forming an image of said photographic object on said photosensitive material in radiation in each of a plurality of spectral zones to which said photosensitive material is responsive; during each of said multiple exposures of said photosensitive material, locating at said recording plane a grating having a spatial frequency resolvable by said photosensitive material; during each exposure of said photosensitive material, causing the grating to have a different relative azimuthal orientation but an azimuthal orientation which makes a substantial angle with respect to horizontal and vertical lines in the photographed scene; and developing the multiple latent color separation images thus formed in said photosensitive material to produce a record containing a plurality of additively superimposed color separation images each of which modulates a spatial carrier having a different azimuthal orientation.

Claim 10

A method of spectral zonal photography and reconstruction, comprising: exposing a photosensitive material responsive to radiation in all spectral zones desired to be recorded to an additive superpositiOn of spectral separation images formed in radiation propagating from a photographed scene in at least three different zones of the electromagnetic spectrum; during the said exposure operation, causing a periodic grating function to be multiplied with each of said separation images but at a predetermined different azimuthal line orientation for each image, the said azimuthal line orientation of the grating function associated with each of said separation images making a substantial angle with respect to horizontal and vertical lines in the photographed scene; developing the exposed photosensitive material to form a record containing said separation images respectively modulating azimuthally distinct spatial carriers angled with respect to scene horizontal and vertical lines; locating the developed record in a beam of light which is substantially coherent; forming in a Fourier transform space a diffraction pattern of said record including a plurality of angularly separated Dirac delta function arrays, each array being convolved with a spectrum of spatial frequencies characterizing a different one of said spectral separation images; selectively transmitting through aperture means in a spatial filter located in said Fourier transform space at least one spectral order of said spatial frequency spectra associated with each of said spectral separation images, said aperture means being located along the direction vectors of each of said periodic arrays of filter elements such that light diffracted from horizontal and vertical lines and patterns in the scene record will be substantially blocked by said spatial filter means to minimize false coloring effects in reconstructed scene images; causing the radiation passed through said transform space in each of said spectral orders to have a mean wavelength consonant with the color separation information carried; and retransforming said transmitted spectra to thus produce at an output a full spectrum aerial reconstruction of the photographed scene.

Claim 11

A method of spectral zonal photography and reconstruction, comprising: exposing a photosensitive material responsive to radiation in all spectral zones desired to be recorded to an additive superpositiOn of spectral separation images formed in radiation propagating from a photographed scene in at least three different zones of the electromagnetic spectrum; during the said exposure operation, causing a periodic grating function to be multiplied with each of said separation images but at a predetermined different azimuthal line orientation for each image, the said azimuthal line orientation of the grating function associated with each of said separation images making a substantial angle with respect to horizontal and vertical lines in the photographed scene; developing the exposed photosensitive material to form a record containing said separation images respectively modulating azimuthally distinct spatial carriers angled with respect to scene horizontal and vertical lines; locating the developed record in a beam of light which is substantially coherent; forming in a Fourier transform space a diffraction pattern of said record including a plurality of angularly separated Dirac delta function arrays, each array being convolved with a spectrum of spatial frequencies characterizing a different one of said spectral separation images; selectively transmitting through aperture means in a spatial filter located in said Fourier transform space at least one spectral order of said spatial frequency spectra associated with each of said spectral separation images, said aperture means being located along the direction vectors of each of said periodic arrays of filter elements such that light diffracted from horizontal and vertical lines and patterns in the scene record will be substantially blocked by said spatial filter means to minimize false coloring effects in reconstructed scene images; causing the radiation passed through said transform space in each of said spectral orders to have a mean wavelength consonant with the color separation information carried; and retransforming said transmitted spectra to thus produce at an output a full spectrum aerial reconstruction of the photographed scene.

Claim 12

A method of spectral zonal photography and reconstruction, comprising: exposing a photosensitive material responsive to radiation in all spectral zones desired to be recorded to a scene multiplied with a spectral zonal encoder comprising at least three mutually coextensive, azimuthally distinct periodic arrays of filter elements each having a preferential absorption for a different spectral zone, each of said periodic arrays of filter elements making a substantial angle with respect to horizontal and vertical lines in the photographed scene; developing the exposed photosensitive material to form a record containing said separation images respectively modulating azimuthally distinct spatial carriers; locating the developed record in a beam of light which is substantially coherent; forming in a Fourier transform space a diffraction pattern of said record including three angularly separated Dirac delta function arrays, each array being convolved with a spectrum of spatial frequencies characterizing a different one of said spectral separation images; selectively transmitting through aperture means in a spatial filter located in said Fourier transform space at least one spectral order of said spatial frequency spectra associated with each of said spectral separation images, said aperture means being located along the direction vectors of each of said periodic arrays of filter elements such that light diffracted from horizontal and vertical lines and patterns in the scene record will be substantially blocked by said spatial filter means to preclude false coloring effects in reconstructed scene images; causing the radiation passed through said transform space in each of said spectral orders to have a mean wavelength consonant with the color separation information carried; and retransforming said transmitted spectra to thus produce at an output plane a full spectrum aerial reconstruction of the photographed scene. Pg,33

Claim 13

A method of spectral zonal photography and reconstruction, comprising: exposing a photosensitive material responsive to radiation in all spectral zones desired to be recorded to a scene multiplied with a spectral zonal encoder comprising at least three mutually coextensive, azimuthally distinct periodic arrays of filter elements each having a preferential absorption for a different spectral zone, each of said periodic arrays of filter elements making a substantial angle with respect to horizontal and vertical lines in the photographed scene; developing the exposed photosensitive material to form a record containing said separation images respectively modulating azimuthally distinct spatial carriers; locating the developed record in a beam of light which is substantially coherent; forming in a Fourier transform space a diffraction pattern of said record including three angularly separated Dirac delta function arrays, each array being convolved with a spectrum of spatial frequencies characterizing a different one of said spectral separation images; selectively transmitting through aperture means in a spatial filter located in said Fourier transform space at least one spectral order of said spatial frequency spectra associated with each of said spectral separation images, said aperture means being located along the direction vectors of each of said periodic arrays of filter elements such that light diffracted from horizontal and vertical lines and patterns in the scene record will be substantially blocked by said spatial filter means to preclude false coloring effects in reconstructed scene images; causing the radiation passed through said transform space in each of said spectral orders to have a mean wavelength consonant with the color separation information carried; and retransforming said transmitted spectra to thus produce at an output plane a full spectrum aerial reconstruction of the photographed scene. Pg,33

Claim 14

A method of color photography and reconstruction using monochrome or other recording materials which do not exhibit, when developed, recorded color values in color, comprising: erecting a full-color aerial image of a scene to be photographed at an image plate; locating a color encoding filter at said image plane so as to be multiplied with said scene image, said filter comprising mutually coextensive periodic arrays of cyan, yellow, and magenta filter elements arranged in a substantially 0*, 45*, 90* geometry relative to each other, said geometry being given an angular displacement in the range of 0* to 45* relative to the exposed scene image such that each of said arrays of filter elements makes a substantial angle with respect to horizontal and vertical lines in the photographed scene, whereby horizontal or vertical lines or patterns in the scene will not function to introduce a false color coding of the scene image; exposing a photosensitive material to said image multiplied with said filter; developing said material to form a record of said scene in which red, blue, and green color separation images are effectively impressed on spatial carriers angled with respect to scene horizontal and vertical lines and defining a 0*, 45*, 90* geometry relative to each other; locating the developed record in light which is substantially coherent; forming in a Fourier transform space a diffraction pattern of said record including three angularly separated Dirac delta function arrays respectively convolved with spectra of said red, blue, and green color separation images; selectively transmitting through aperture means in a spatial filter located in said Fourier transform space at least one spectral order of said spatial frequency spectra associated with each of said spectral separation images, said aperture means being located along the direction vectors of each of said periodic arrays of filter elements such that light diffracted from horizontal and vertical lines and patterns in the scene record will be substantially blocked by said spatial filter means to preclude false coloring effects in reconstructed scene images; and causing the light carrying said red, blue, and green color separation information to be predominantly red, blue, and green respectively, whereby a full color aerial reconstruction of said scene is produced.

Claim 15

A method of color photography and reconstruction using monochrome or other recording materials which do not exhibit, when developed, recorded color values in color, comprising: erecting a full-color aerial image of a scene to be photographed at an image plate; locating a color encoding filter at said image plane so as to be multiplied with said scene image, said filter comprising mutually coextensive periodic arrays of cyan, yellow, and magenta filter elements arranged in a substantially 0*, 45*, 90* geometry relative to each other, said geometry being given an angular displacement in the range of 0* to 45* relative to the exposed scene image such that each of said arrays of filter elements makes a substantial angle with respect to horizontal and vertical lines in the photographed scene, whereby horizontal or vertical lines or patterns in the scene will not function to introduce a false color coding of the scene image; exposing a photosensitive material to said image multiplied with said filter; developing said material to form a record of said scene in which red, blue, and green color separation images are effectively impressed on spatial carriers angled with respect to scene horizontal and vertical lines and defining a 0*, 45*, 90* geometry relative to each other; locating the developed record in light which is substantially coherent; forming in a Fourier transform space a diffraction pattern of said record including three angularly separated Dirac delta function arrays respectively convolved with spectra of said red, blue, and green color separation images; selectively transmitting through aperture means in a spatial filter located in said Fourier transform space at least one spectral order of said spatial frequency spectra associated with each of said spectral separation images, said aperture means being located along the direction vectors of each of said periodic arrays of filter elements such that light diffracted from horizontal and vertical lines and patterns in the scene record will be substantially blocked by said spatial filter means to preclude false coloring effects in reconstructed scene images; and causing the light carrying said red, blue, and green color separation information to be predominantly red, blue, and green respectively, whereby a full color aerial reconstruction of said scene is produced.

Claim 17

A method of color photography and reconstruction using monochrome or other recording materials which do not exhibit, when developed, recorded color values in color, comprising: locating at a recording plane a photosensitive material responsive to radiation in all spectral zones desired to be recorded; effecting a multiple exposure of said photosensitive material by, in succession, forming an image of said photographic object on said photosensitive material in radiation in each of a plurality of spectral zones to which said photosensitive material is responsive; during each of said multiple exposures of said photosensitive material, locating at said recording plane a grating having a spatial frequency resolvable by said photosensitive material; during said exposure of said photosensitive material, causing the grating to have a different relative azimuthal orientation but an azimuthal orientation which defines a substantial angle with respect to horizontal and vertical lines in the photographed scene; locating the developed record in a beam of light which is substantially coherent; forming in a Fourier transform space a diffraction pattern of said record including three angularly separated Dirac delta function arrays, each array being convolved with a spectrum of spatial frequencies characterizing a different one of said color separation images; selectively transmitting through aperture means in a Spatial filter located in said Fourier transform space at least one spectral order of said spatial frequency spectra associated with each of said color separation images, said aperture means being located along the direction vectors of each of said periodic arrays of filter elements such that light diffracted from horizontal and vertical lines and patterns in the scene record will be substantially blocked by said spatial filter means to preclude false coloring effects in reconstructed scene images; retransforming said transmitted spectra; causing the radiation passed through said transform space in each of said spectral orders to have a mean wavelength consonant with the color separation information carried; and retransforming said transmitted spectra to erect at an output plane a full-color aerial reconstruction of the photographed scene.

Claim 18

A method of color photography and reconstruction using monochrome or other recording materials which do not exhibit, when developed, recorded color values in color, comprising: locating at a recording plane a photosensitive material responsive to radiation in all spectral zones desired to be recorded; effecting a multiple exposure of said photosensitive material by, in succession, forming an image of said photographic object on said photosensitive material in radiation in each of a plurality of spectral zones to which said photosensitive material is responsive; during each of said multiple exposures of said photosensitive material, locating at said recording plane a grating having a spatial frequency resolvable by said photosensitive material; during said exposure of said photosensitive material, causing the grating to have a different relative azimuthal orientation but an azimuthal orientation which defines a substantial angle with respect to horizontal and vertical lines in the photographed scene; locating the developed record in a beam of light which is substantially coherent; forming in a Fourier transform space a diffraction pattern of said record including three angularly separated Dirac delta function arrays, each array being convolved with a spectrum of spatial frequencies characterizing a different one of said color separation images; selectively transmitting through aperture means in a Spatial filter located in said Fourier transform space at least one spectral order of said spatial frequency spectra associated with each of said color separation images, said aperture means being located along the direction vectors of each of said periodic arrays of filter elements such that light diffracted from horizontal and vertical lines and patterns in the scene record will be substantially blocked by said spatial filter means to preclude false coloring effects in reconstructed scene images; retransforming said transmitted spectra; causing the radiation passed through said transform space in each of said spectral orders to have a mean wavelength consonant with the color separation information carried; and retransforming said transmitted spectra to erect at an output plane a full-color aerial reconstruction of the photographed scene.