David R. Cok
29Patents
14h-index
12Co-inventors
78Inventor score
Filing activity: Sep 10, 1984 → Sep 9, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4642678A | Signal processing method and apparatus for producing interpolated chrominance values in a sampled color image signal | Electricity | 179 | Expired |
| US4630307A | Signal processing method and apparatus for sampled image signals | Electricity | 139 | Expired |
| US5641596A | Adjusting film grain properties in digital images | Electricity | 124 | Expired |
| US5875040A | Gradient based method for providing values for unknown pixels in a digital image | Electricity | 100 | Expired |
| US4605956A | Single-chip electronic color camera with color-dependent birefringent optical spatial frequency filter and red and blue signal interpolating circuit | Electricity | 88 | Expired |
| US6104839A | Method and apparatus for correcting pixel values in a digital image | Fixed Constructions | 70 | Expired |
| US5185808A | Method for merging images | Physics | 68 | Expired |
| US5022085A | Neighborhood-based merging of image data | Physics | 66 | Expired |
| US4945406A | Apparatus and accompanying methods for achieving automatic color balancing in a film to video transfer system | Electricity | 65 | Expired |
| US6813618B1 | System and method for acquisition of related graphical material in a digital graphics album | Emerging Cross-Sectional Technologies | 51 | Expired |
| US5040064A | Method of processing sampled signal valves produced by a color imaging device | Electricity | 31 | Expired |
| US5793886A | Method of adjusting image pixel values within an image sequence by interpolation of target cumulative histograms for images to be adjusted | Physics | 29 | Expired |
| US4910611A | Method for doing interactive image processing operations on large images | Electricity | 18 | Expired |
| US5264924A | Mechanism for deriving noise-reduced estimates of color signal parameters from multiple color/luminance image sensor outputs | Electricity | 14 | Expired |
| US5905580A | System and article of manufacture for producing an index print from photographic negative strips | Electricity | 12 | Expired |
| US5032910A | Mechanism for producing interpolated color values for a sampled color image signal using a linear equation technique | Electricity | 11 | Expired |
| US5631979A | Pixel value estimation technique using non-linear prediction | Physics | 10 | Expired |
| US5555194A | Cloning technique for digital image retouching | Physics | 9 | Expired |
| US5801710A | Computer program product for defining a soft edge in a digital mask | Physics | 7 | Expired |
| US5828379A | Computer program product for generating a soft edge on a digital mask | Physics | 7 | Expired |
| US6097837A | Method and apparatus for removing temporal lighting variations from an image source | Physics | 5 | Expired |
| US5276510A | Airbrush modeling routine for an electric image reproduction system | Physics | 5 | Expired |
| US5398077A | Method for adjusting the luminance of a color signal | Electricity | 4 | Expired |
| US6750900B1 | Method and apparatus for computing motion tracking parameters | Electricity | 3 | Expired |
| US10733074B1 | Deductive verification for programs using functional programming features | Physics | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.