Inventor
OHSAWA HIDEFUMI
JP35 patents
⚠️ This page may combine multiple inventors who share the name “OHSAWA HIDEFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
34 patentsUS5883976AMar 16, 1999
Selectively utilizing multiple encoding methods
CANON KK80 citations96
US5818537AOct 6, 1998
Image processing method and apparatus for converting between data coded in different formats
CANON KK87 citations96
US5790195AAug 4, 1998
Image processing apparatus
CANON KK78 citations96
US5008950AApr 16, 1991
Image processing method and apparatus for error-dispersion digitization without moire or spurious stripe formation
CANON KK65 citations96
US4975786ADec 4, 1990
Image processing method and apparatus with error diffusion capability
CANON KK76 citations96
US4926268AMay 15, 1990
Image processing apparatus which converts m-bit image data to n-bit (n>m) image data
CANON KK56 citations96
US4878125AOct 31, 1989
Method and apparatus for image processing with fed-back error correction
CANON KK79 citations95
US4876610AOct 24, 1989
Image processing apparatus with binarization-error dispersal
CANON KK72 citations95
US4958238ASep 18, 1990
Image processing method and apparatus with conditional correction of error data
CANON KK48 citations93
US4958218ASep 18, 1990
Image processing method and apparatus with dot-processing
CANON KK31 citations93
US6266449B1Jul 24, 2001
Information processing apparatus and method which selectively controls data encoding by monitoring amount of encoded data
CANON KK35 citations92
US5991450ANov 23, 1999
Image encoding and decoding apparatus
CANON KK20 citations92
US5903366AMay 11, 1999
Color image encoding method
CANON KK49 citations92
US5875039AFeb 23, 1999
Image processing method and apparatus
CANON KK38 citations92
US5136396AAug 4, 1992
Image encoding method
CANON KK33 citations92
US5126838AJun 30, 1992
Color image processing with undercolor removal suitable for use in digital processing
CANON KK45 citations92
US5124811AJun 23, 1992
Image encoding apparatus
CANON KK36 citations92
US5068746ANov 26, 1991
Image processing apparatus
CANON KK26 citations92
US6285464B1Sep 4, 2001
Apparatus and method for producing a half-tone image
CANON KK23 citations91
US5325448AJun 28, 1994
Image treatment method and apparatus with error dispersion and controllable quantization
CANON KK40 citations91
US6509900B1Jan 21, 2003
Image management apparatus and method, image management system, and storage medium
CANON KK16 citations84
US5898461AApr 27, 1999
Image processing apparatus
CANON KK17 citations84
US5732153AMar 24, 1998
Color image processing apparatus
CANON KK17 citations84
US5917956AJun 29, 1999
Image processing apparatus capable of removing an edge portion from a multi-level color signal based on a binary color signal
CANON KK16 citations82
US5900910AMay 4, 1999
Block matching method and apparatus which can use luminance/chrominance data
CANON KK9 citations74
US5892546AApr 6, 1999
Encoding apparatus and method for encoding a quantized difference between an input signal and a prediction value
CANON KK11 citations74
US5844718ADec 1, 1998
Image processing apparatus and method in which multi-level color signal with removed edge component is encoded
CANON KK13 citations74
US5825934AOct 20, 1998
Adaptive image coding method and apparatus
CANON KK14 citations74
US5282256AJan 25, 1994
Binary image data coding method having the function of correcting errors derived from coding
CANON KK14 citations74
US4907076AMar 6, 1990
Color balance processing apparatus wherein color component signals are corrected through comparison with a reference value
CANON KK11 citations74
US6026197AFeb 15, 2000
Coding method and apparatus therefor
CANON KK13 citations73
US5655032AAug 5, 1997
Coding method and apparatus therefor
CANON KK14 citations73
US5331426AJul 19, 1994
Image encoding method
CANON KK15 citations73
US6415052B1Jul 2, 2002
Color image processing apparatus
CANON KK3 citations63