Image rendition using sequential color rendition
View Patent ↗The invention relates to a method for rendering an image sequence. wherein an individual image is rendered by rendering monochromatic subimages in temporal succession. A subimage sequence obtained by temporal sequencing of the subimages is generated in motion-compensated fashion.
1. A method for rendering an image sequence (B(z)) in which an individual image (B(k), B(k+1)) is rendered by rendering monochromatic subimages (B 1 (k),. . . , B 3 (k+1)) in temporal succession, wherein a subimage sequence (TB(i)) obtained by temporal sequencing of subimages is generated in motion-compensated fashion, the method comprising:
generating a motion-compensated image sequence (B(i)) having an image frequency higher than that of the image sequence (B(z)) to be rendered;
filtering the motion-compensated image sequence (B(i)) with a color filter apparatus in order to obtain at least three monochromatic subimage sequences (B 1 (i), B 2 (i), B 3 (i); and
generating a subimage sequence (TB(i)) to be rendered from the individual subimage sequences (B 1 (i), B 2 (i), B 3 (i)) by cyclic selection of images of the subimage sequences by a time-multiplexing method;
where the generating the motion-compensated image sequence, the filtering the motion-compensated image sequence, and the generating the subimage sequence are performed by a signal processor.
2. The method of claim 1 where the image frequency of the motion-compensated image sequence (B(i)) corresponds to n times the frequency of the image sequence (B(z)) to be rendered, n being the number of monochromatic subimages (B 1 (k), . . . , B 3 (k+1+⅔)) generated in temporal succession in order to render an image (B(k), B(k+1)).
3. The method of claim l, where in order to render an image (B(k), B(k+1)) of the image sequence (B(z)), three monochromatic subimages (B 1 (k), . . . , B 2 (k+1+⅔)) in the colors red, green and blue are generated.
4. The method of claim 1 , wherein the signal processor includes an interpolator, a filter and a multiplexer.
5. A method for rendering an image sequence in which an image is generated by rendering monochromatic subimages in temporal succession, the method comprising:
receiving an image sequence and interpolating the received image sequence to generate a motion-compensated received image sequence having an image frequency higher than that of the received image sequence;
filtering the motion-compensated received image sequence to generate a plurality of monochromatic subimage sequences;
multiplexing the plurality of monochromatic subimage sequences to generate a subimage sequence; and
projecting the subimage sequence onto a projection screen;
where the receiving, interpolating, filtering and multiplexing are performed by a signal processor.
6. The method of claim 5 , where the image frequency of the motion-compensated received image sequence corresponds to n times the frequency of the received image sequence, n being equal to the number of plurality of monochromatic subimage sequences.
7. Apparatus that renders an image using a plurality of monochromatic subimages, the apparatus comprising:
an interpolator that receives an image sequence and generates a motion-compensated received image sequence having an image frequency higher than that of the received image sequence;
a filter that receives the motion-compensated received image sequence to generate a plurality of monochromatic subimage sequences;
a multiplexer that receives the plurality of monochromatic subimage sequences and generates a multiplexed subimage sequence; and
means for projecting the multiplexed subimage sequence onto a projection screen to render the image.