![]() (e) taking as said distance T the smaller of the values calculated therefor in steps (c) and (d).Ĩ. ![]() ![]() (d) recalculating said distance T in accordance with the equation: #EQU23# wherein F is the distance between said camera and a foreground object located within said scene between said camera and said key object and The method as defined in claim 4, comprising the further steps of: The method as defined in claim 4, wherein said preselected value E is 3 arc minutes.ħ. The method as defined in claim 4, wherein said viewing angle θ is 15°.Ħ. (c) calculating said distance T in accordance with the equation: #EQU22# wherein K is the distance between said camera and said key object, B is the distance between said camera and said foreground object, and u is the back focal length of said single-lens camera.ĥ. (b) calculating a spatial parallax P for said photograph in accordance with the equation: #EQU21# wherein π is 3.1416 and E is a preselected value from 2 to 10 arc minutes representative of the ability of the eyes of said observer to fuse two images of said three-dimensional photograph together and (a) first calculating a distance V at which an observer will observe said photograph in accordance with the equation: V=D/(2 tan (θ/2)), In a method of making a three-dimensional lenticular photograph of a scene including a key object and a background object located beyond said key object with respect to a viewer of said scene, said photograph having width D, the method including the steps of exposing with a single-lens camera said scene from a first vantage point, moving said camera laterally with respect to said scene over a distance T and there exposing said scene ffrom a second vantage point, the improvement comprising a method of calculating said distance T including the steps of: The method as defined in claim 1, wherein said preselected value E is 3 arc minutes.Ĥ. The method as defined in claim 1, wherein said viewing angle θ is 15°.ģ. (c) calculating said distance T in accordance with the equation: #EQU20# wherein K is the distance between said camera and said key object, F is the distance between said camera and said foreground object, and u is the back focal length of said single-lens camera.Ģ. (b) calculating a spatial parallax P for said photograph in accordance with the equation: #EQU19# wherein π is 3.1416 and E is a preselected value from 2 to 10 arc minutes representative of the ability of the eyes of said observer to fuse two images of said three-dimensional photograph together and Wherein θ is a predetermined viewing angle of said photograph (a) first calculating a distance V at which an observer will observe said photograph in accordance with the equation: V=D/(2 tan (θ/2) In a method of making a three-dimensional lenticular photograph of a scene including a key object and a foreground object located between a veiwer of said scene and said key object, said photograph having width D, the method including the steps of exposing with a single-lens camera said scene from a first vantage point, movign said camera laterally with respect to said scene over a distance T and there exposing said scene from a second vantage point, the improvement comprising a method of calculating said distance T including the steps of:
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