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US 5,897,413 AGranted
Travelling mat backing
OwnerJonathan Erlandinventor
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OwnerJonathan Erlandinventor
Estimating the term…
The present invention provides an improved backing screen having particular application for use in composite photography. In particular, the present invention relates to color difference composite photography, whether still, motion picture, video, solid state digital electronic or electrophotographic imaging, in which foreground and background scenes are separately recorded and subsequently combined using known "blue screen" or special color background techniques to form a single image. The present invention includes a biaxially stretchable fabric of synthetic fibers treated with a dye formulation, including fluorescence which is reactive to the visible spectrum, to achieve any of a variety of specific spectral loci and luminances, for the purpose of providing a precise chromatic actinic stimulus response for a silver halide photographic film, or similar response for electronic imaging devices. The selected backing is deployed in a support such that the fabric is stretched to a smooth, featureless surface and then illuminated. Foreground subject matter interposed between the camera and the backing or directly on the backing will therefore be readily distinguished and "matted" for compositing by methods well known to the art. In a further aspect of the present invention, the light emitting characteristics of the fluorescent matte fabric of the present invention may be advantageously relied upon to obtain the desired lighting effect in, for example, underwater photography. In yet another embodiment of the present invention, the matte fabric of the present invention may be configured to cover objects or parts of a person in a field of view.
A foreground or background imaging backing for matting in composite photography comprising a fabric material treated with a dye formulation including fluorescence which is reactive to illumination within visible spectrum to achieve a spectral emission of a desired color and luminance for providing a desired actinic stimulus to an image recording media, wherein the imaging backing exhibits a spectral characteristic substantially corresponding to one of the optimal spectral loci of FIG. 1, so as to provide a chromatic actinic stimulus response optimal for the image recording media.
A substrate for matting in composite photography comprising a fabric material treated with a dye formulation including fluorescence which is reactive to illumination within visible spectrum to achieve a spectral emission of a desired color and luminance for providing a desired actinic stimulus to an image recording medium, wherein the dye formulation comprises a first dye containing a first phosphor which is reactive to illumination within the visible spectrum and having a dominant emission of a first wavelength within the visible spectrum, a second dye containing a second phosphor which is reactive to illumination within the visible spectrum and having a dominant emission of a second wavelength within the visible spectrum, and an absorption dye which absorbs certain fluorescent emission from said first posphor, wherein said second dye fluoresces in part by stimulus of the emission from the first phosphor.
Dependencies are inferred from the claim text.