Methods and systems for sub-pixel rendering with adaptive filtering
View Patent ↗Processing data for a display including pixels, each pixel having color sub-pixels, comprises receiving pixel data. Once the pixel data is received, processing data for a display includes converting the pixel data to sub-pixel rendered data, the conversion generating the sub-pixel rendered data for a sub-pixel arrangement including alternating red and green sub-pixels on at least one of a horizontal and vertical axis. Next processing data for a display includes correcting the sub-pixel rendered data if a condition exists and outputting the sub-pixel rendered data.
1. A method of transforming supplied input data signals representing colored pixels of an input image having a first spatial formatting of colored light outputting areas into output data signals representing colored sub-pixels that are organized according to a different and predefined second spatial formatting of colored light outputting areas,
where the first spatial formatting presumes overlap of the represented and respective colored pixels respectively into each of a plurality of same-sized light outputting areas, the light outputting areas being areas of three different primary colors; and
where the predefined second spatial formatting disposes in respective and separate light outputting areas, not necessarily of same sizes, corresponding colored sub-pixels whose respectively output lights are to be represented by, and caused to be generated by, the output data signals, where subsets of same colored ones of the colored sub-pixels define respective and differently colored color planes,
the method of transforming comprising:
for each of the supplied input data signals and the respective first formatted, colored pixels represented thereby, defining a corresponding set of implied, light contributing and single-colored, sample areas whose colorings implicitly contribute to corresponding colored luminances represented by the respective first formatted, colored pixel; where said defining includes:
for the purpose of determining a geometric center for an implied point source of each of to-be-associated therewith and implied one of the sample areas, where the determined geometric center and a respective intensity of colored light implicitly output from the point source defines a respective, light-contributing sampling point organized according to said first format; first defining each of the said implied sample areas of a corresponding one of the color planes by defining a grid of lines that are formed spaced apart from and equidistant between centers of the sub-pixels of the corresponding color plane, and
for each color plane, causing said grid of said lines to be also symmetric with respect to the geometric centers of the implied point sources of that color plane; and
generating the output data signals on the basis of said defining of the corresponding set of implied, light contributing and single-colored sample areas for the color planes as defined by placement of the sub-pixels of the second spatial formatting and by implied overlaying thereupon of the implied point sources.
2. The method of claim 1 , wherein as a result of the sample areas defining step, the respective sample areas of the respective color planes define a tiling pattern whose tiles have a shape selected from the group comprising squares, rectangles, triangles, hexagons, octagons, diamonds, staggered squares, staggered rectangles, staggered triangles, Penrose tiles, rhombuses, distorted rhombuses, and staggered diamonds.
3. The method of claim 1 , wherein the generating of the output data signals is further based on defining resample areas in the respective color planes, the resample areas being formed of parts or wholes of the defined sample areas which parts or wholes are deemed to contribute to the luminances of the respective sub-pixels of the respective color planes.