Video system for producing video images simulating images derived from motion picture film
First Claim
1. A video signal modification system for simulating video images originated on motion picture film stocks from high definition video originated images, including:
- computing means for reassigning color and black component values for each pixel, scan-sequentially, within each frame of a high definition originated image stored on tape, based on digital component modifications;
look up table programs on which said digital component modifications are based, representing and compiled from comparative digital results of film stocks'"'"' responses to selected color chart gradients under selected lighting conditions, following a telecine transfer to digital video, as plotted against a video originated response to color and grey scale charts under same lighting combinations;
means for physically instilling selected film grain patterns of optional density and size, to the images resulting from a high definition videoprojection of frame store data derived from primary digital modification effected with said computing means;
means for videographing said videoprojection with a high definition camera unit, aligned to and with technical means to maintain a high degree of the projected image'"'"'s integrity;
means for compatibly;
recording;
playing back;
frame-storing in digital form;
digitally altering;
frame-storing again;
reconverting to analog and videoprojecting;
re-recording and displaying on a monitor, a high definition video signal; and
means for governing all insert time-code editing, system function, timing, and component advance signals through a system computer from a keyboard coupled to said system computer.
4 Assignments
0 Petitions
Accused Products
Abstract
Digital signals are generated and stored for each pixel of a frame of high definition video originated material. A computer reads the digital signals and converts them to binary image data by employing a selected look-up-table program to reassign color and black component values for each pixel. The programs applied in the component value reassignments are compiled from, and based on, comparative digital video component results of telecined film stocks'"'"' responses to selected color and grey scale gradients as charted against a selected video unit'"'"'s response to the same charts under a selected number of identical lighting circumstances. The revised digital data is assembled and converted to an analog signal for a secondary modification wherein: A projector unit projects the high definition video frame through a macro lens onto a strip of exposed and processed motion picture film of an optional grey scale gradient and thus grain pattern density. An automatically variable filter over the projector lens compensates to maintain the same brightness result from the opposite side of the film surface. A precisely aligned, compatible high definition camera unit provides a synching signal to the projector and automatically frames and focuses on the projected image from the reverse side of the celluloid surface, scanning the projected scan lines, to output the grain-embodying image for recording and displaying on a high definition format or external conversation to NTSC for broadcast purposes.
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Citations
38 Claims
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1. A video signal modification system for simulating video images originated on motion picture film stocks from high definition video originated images, including:
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computing means for reassigning color and black component values for each pixel, scan-sequentially, within each frame of a high definition originated image stored on tape, based on digital component modifications; look up table programs on which said digital component modifications are based, representing and compiled from comparative digital results of film stocks'"'"' responses to selected color chart gradients under selected lighting conditions, following a telecine transfer to digital video, as plotted against a video originated response to color and grey scale charts under same lighting combinations; means for physically instilling selected film grain patterns of optional density and size, to the images resulting from a high definition videoprojection of frame store data derived from primary digital modification effected with said computing means; means for videographing said videoprojection with a high definition camera unit, aligned to and with technical means to maintain a high degree of the projected image'"'"'s integrity; means for compatibly;
recording;
playing back;
frame-storing in digital form;
digitally altering;
frame-storing again;
reconverting to analog and videoprojecting;
re-recording and displaying on a monitor, a high definition video signal; andmeans for governing all insert time-code editing, system function, timing, and component advance signals through a system computer from a keyboard coupled to said system computer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A video signal modification system for converting video originated images into final video images simulating images originated from motion picture film, the modification system including:
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look-up table means for holding conversion data correlating color and black component values of picture pixels in said video originated images with modified component values, said conversion data being selectable for said picture pixels based on a plurality of parameters including lighting conditions; computing means coupled to said look-up table means for reassigning values for said color and black component values for substantively each said picture pixel within each frame of said video originated images in dependence on said modified component values selected from said look-up table means and thereby producing intermediate video images; grain pattern instilling means for physically instilling selected film grain patterns of optional density and size into said intermediate video images; and final image producing means for producing said final video images from said intermediate video images which have had said film grain patterns instilled therein. - View Dependent Claims (30, 31, 32, 33, 34, 35)
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36. A video signal modification system for converting video originated images into final video images simulating images originated from motion picture film, the modification system including:
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look-up table means for holding conversion data correlating to color and black component values of picture pixels in said video originated images with modified component values, said conversion data being selectable for said picture pixels based on a plurality of parameters including lighting conditions; said conversion data being compiled and recallable according to a chosen film stock to be simulated, said parameters including; (a) color temperature; (b) brightness; and (c) a selected shooting f-stop setting; computing means coupled to said look-up table means for reassigning values for said color and black component values for substantively each said picture pixel within each frame of said video originated images in dependence on said modified component values selected from said look-up table means and thereby producing intermediate video images; and means for producing said final video images from said intermediate video images. - View Dependent Claims (37, 38)
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Specification