Preregistered multispectral photographs

Claim 1

A method of producing preregistered multispectral photographs comprising the sequence of steps of forming, on black-and-white film and respectively employing different zones of the actinic electromagnetic spectrum, at least three photographs of a common scene overflown by an airplane or satellite or the like, the plurality of photographs constituting, a first set of multispectral photographs; reproducing at least one of the photographs of the first set with scale correction, which with the remaining ones of the first set provides a second set of at least three photographs all on the same scale; projecting the photographs of the second set on a viewing screen simultaneously, adjusting the positions of the photographs of the second set to produce accurately superimposed projections forming a composite image on the viewing screen by moving one or more of the photographs laterally, longitudinally and about an axis as necessary for coincidence during said superimposed projection, and reproducing the photographs of the second set in their adjusted positions to provide a third set of at least three photographs on a single sheet of film; wherein the photographs of the second set are film negatives and the film sheet of the third set is a positive and wherein the reproducing of the second set is by printing of the second set as adjusted; whereby said film sheet is mountable in a projector with the photographs of the third set in the same positions with respect to each other as the photographs of the second set in their adjusted positions.

Claim 2

A method of producing preregistered multispectral photographs comprising the sequence of steps of forming, on black-and-white film and respectively employing different zones of the actinic electromagnetic spectrum, at least three photographs of a common scene overflown by an airplane or satellite or the like, the plurality of photographs constituting, a first set of multispectral photographs; reproducing at least one of the photographs of the first set with scale correction, which with the remaining ones of the first set provides a second set of at least three photographs all on the same scale; projecting the photographs of the second set on a viewing screen simultaneously, adjusting the positions of the photographs of the second set to produce accurately superimposed projections forming a composite image on the viewing screen by moving one or more of the photographs laterally, longitudinally and about an axis as necessary for coincidence during said superimposed projection, and reproducing the photographs of the second set in their adjusted positions to provide a third set of at least three photographs on a single sheet of film; wherein the photographs of the second set are film negatives and the film sheet of the third set is a positive and wherein the reproducing of the second set is by printing of the second set as adjusted; whereby said film sheet is mountable in a projector with the photographs of the third set in the same positions with respect to each other as the photographs of the second set in their adjusted positions.