Television – Format conversion – Line doublers type
Patent
1997-08-08
2000-10-31
Flynn, Nathan
Television
Format conversion
Line doublers type
348449, 348441, 348447, H04N 701, H04N 1120
Patent
active
06141056&
ABSTRACT:
A system processes an interlaced video image that contains at least a first line and a second line, where each of the first and second lines includes a plurality of pixels. The system generates an interpolated line with a plurality of interpolated pixels located intermediate the first and second lines. The system selects a first set of the pixels from the first line and selects a second set of pixels from the second line. The first set of pixels are fitted to a first function and the second set of pixels are fitted to a second function. Preferably, the first and second functions are quadratic and independent of each other. The system calculates a shift factor based on either the zero of a first derivative of the first function and a zero of the first derivative of the second function or a horizontal shift of a first edge feature in the first function and a second edge feature in the second function. Depending upon the system these two shift factor calculation factors may describe the same technique. The system interpolates based on at least one of the pixels of at least one of the first line and the second line in accordance with the shift factor to generate at least one of the interpolated pixels of the interpolated line.
REFERENCES:
patent: 5095354 (1992-03-01), Sokawa et al.
patent: 5226114 (1993-07-01), Martinez et al.
patent: 5233421 (1993-08-01), Christopher
patent: 5307164 (1994-04-01), Dong-II
patent: 5329314 (1994-07-01), Correa et al.
patent: 5428397 (1995-06-01), Lee et al.
patent: 5430490 (1995-07-01), Rim
patent: 5475438 (1995-12-01), Bretl
patent: 5493338 (1996-02-01), Hong
patent: 5517247 (1996-05-01), Correa et al.
patent: 5519451 (1996-05-01), Clatanoff et al.
patent: 5550592 (1996-08-01), Markandey et al.
patent: 5602654 (1997-02-01), Patti et al.
patent: 5621470 (1997-04-01), Sld-Ahmed
patent: 5742348 (1998-04-01), Kuwahara et al.
"VLSI Implementation of a Nonlinear Image Interpolation Filter"; IEEE Transactions on Consumer Electronics, vol. 42, No. 3, Aug. 1996, pp. 721-728.
"Grand Alliance HDTV Multi-Format Scan Converter"; IEEE Transactions on Consumer Electronics, vol. 41, No. 4, Nov. 1995, pp. 1020-1031.
"A Deinterlacer for IQTV Receivers and Multimedia Applications"; IEEE Transactions on Consumer Electronics, vol. 39, No. 3, Aug. 1991, pp. 234-240.
"Interlaced to Progressive Scan Conversion with Double Smoothing"; IEEE Transactions on Consumer Electronics, vol. 39, No. 3, Aug. 1993, pp. 241-246.
"A Motion-Adaptive De-Interlacing Method"; IEEE Transactions on Consumer Electronics, Jun. 5, 1992, pp. 145-149.
"Time-Recursive Motion Compensated Deinterlacing"; Elsevier Science Publishers B.V., 1990, pp. 635-642.
"Interlaced to Progressive Conversion by Median Filtering"; Elsevier Science Publishers B.V., 1990, pp. 677-684.
"Spatial Interpolation of Interlaced Television Pictures"; IEEE Transactions on Consumer Electronics, 1989, pp. 1886-1889.
Flynn Nathan
Sharp Laboratories of America Inc.
Srivastava Vivek
LandOfFree
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