Akihiro Katayama
226Patents
27h-index
152Co-inventors
93Inventor score
Filing activity: Dec 23, 1987 → Jun 27, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6522312B2 | Apparatus for presenting mixed reality shared among operators | Physics | 235 | Expired |
| US5416606A | Method and apparatus for encoding or decoding an image in accordance with image characteristics | Electricity | 84 | Expired |
| US6191808A | Image processing method with viewpoint compensation and apparatus therefor | Electricity | 79 | Expired |
| US4878125A | Method and apparatus for image processing with fed-back error correction | Physics | 72 | Expired |
| US6481201B2 | Air-fuel ratio control apparatus of internal combustion engine | Emerging Cross-Sectional Technologies | 71 | Expired |
| US4975786A | Image processing method and apparatus with error diffusion capability | Electricity | 68 | Expired |
| US5361147A | Method and apparatus for encoding and decoding color images | Electricity | 65 | Expired |
| US5086484A | Image processing apparatus with fixed or variable threshold | Electricity | 63 | Expired |
| US6502389B2 | Air-fuel ratio control system for internal combustion engine and control method therof | Mechanical Engineering; Lighting; Heating | 59 | Expired |
| US4876610A | Image processing apparatus with binarization-error dispersal | Physics | 55 | Expired |
| US5086487A | Method and apparatus for image encoding in which reference pixels for predictive encoding can be selected based on image size | Physics | 54 | Expired |
| US6633304B2 | Mixed reality presentation apparatus and control method thereof | Physics | 50 | Expired |
| US6335754B1 | Synchronization between image data and location information for panoramic image synthesis | Electricity | 48 | Expired |
| US5008950A | Image processing method and apparatus for error-dispersion digitization without moire or spurious stripe formation | Electricity | 44 | Expired |
| US4958238A | Image processing method and apparatus with conditional correction of error data | Electricity | 44 | Expired |
| US5138672A | Image reducing apparatus | Electricity | 42 | Expired |
| US5588069A | Image processing apparatus for advantageously encoding blocks of data having either substantially the same or varied colors | Electricity | 40 | Expired |
| US5909505A | Color image encoding method and apparatus | Electricity | 35 | Expired |
| US5668646A | Apparatus and method for decoding differently encoded multi-level and binary image data, the later corresponding to a color in the original image | Electricity | 34 | Expired |
| US5121448A | Method of and apparatus for high-speed editing of progressively-encoded images | Electricity | 34 | Expired |
| US6445807B1 | Image processing method and apparatus | Physics | 32 | Expired |
| US4958236A | Image processing method and apparatus therefor | Electricity | 32 | Expired |
| US6263100A | Image processing method and apparatus for generating an image from the viewpoint of an observer on the basis of images obtained from a plurality of viewpoints | Physics | 29 | Expired |
| US7954947B2 | Image acquisition apparatus and image acquisition method using optical coherence tomography | Physics | 28 | Active |
| US4958218A | Image processing method and apparatus with dot-processing | Electricity | 27 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.