Inventor

SAKUYAMA HIROYUKI

JP53 patents

⚠️ This page may combine multiple inventors who share the name “SAKUYAMA HIROYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SAKUYAMA HIROYUKI

RICOH KK

Image compression with tile alignment

Color conversion method for a color matching, a method for expanding a function of a program module and a color conversion method using the method for expanding a function of a program module

Color conversion processing method for color matching and a processor readable medium storing a program for implementing the color conversion processing method

Method for reversibly transforming data format, image processing apparatus, program for reversibly transforming data format, and computer-readable recording medium thereof

Image processing apparatus, image reading apparatus, image forming apparatus and recording medium for image processing program

System, method and program for improved color image signal quantization

Image-processing apparatus, an image-processing method, a program, and a memory medium

Image decoding technique for suppressing tile boundary distortion

Image recording apparatus and image data selection method

Image processing apparatus, image processing method, and storage medium

Image compression method and apparatus for suppressing quantization rate in particular region, image expansion method and apparatus therefor, and computer-readable storage medium storing program for the compression or expansion

Digital watermarking which allows tampering to be detected on a block-specific basis

Image processing apparatus, image processing program, and storage medium

Image decoding technique for suppressing tile boundary distortion

Image processing apparatus, image processing method, program, and recording medium that allow setting of most appropriate post-quantization condition

Image processing apparatus, image compressing apparatus, image decompressing apparatus, image processing method, image compressing method, image decompressing method, information processing apparatus, information processing method, program and recording medium

Image processing apparatus and image processing method, image processing system, image processing program and storage medium

Image processing apparatus, image processing program, and storage medium

Durable and undecipherable digital watermarking technique and detection of unauthorized use

Imaging device, image processing method, and recording medium

Code conversion apparatus, code conversion method and storage medium

Image compression method capable of reducing tile boundary distortion

Image processing scheme

Modifying wavelet division level before transmitting data stream

Encoded data generation apparatus and a method, a program, and an information recording medium

Image processing apparatus for compositing images

Image data generation with reduced amount of processing

Hierarchically compressing and coding and storing image data

Coding apparatus, coding method, program and information recording medium that can suppress unnatural degradation of image quality

Coding and decoding of image data with additional information

Image data generation with reduced amount of processing

Image browsing device acquiring coded data for saving a displayed image from image data source

Image processing apparatus and method for scalable encoded image data

Code processing device, code processing method, program, and recording medium

Image coding apparatus, program, storage medium and image coding method

RICOH CO LTD

Orderly structured document code transferring method using character and non-character mask blocks

Apparatus and method for processing image data based on object movement speed within a frame

Code processing apparatus and code processing method

SAKUYAMA HIROYUKI

Zooming operations and magnification for groups of images

Information processing apparatus for extracting codes corresponding to an image area

Image processing apparatus, image processing method, and non-transitory recording medium

SADASUE TAMON

Image processing apparatus and image processing method

Image processing apparatus, image processing method, and computer program product

MAKI TAKASHI

Method and apparatus for setting a region of interest in image data

RICOH COPMANY LTD

Scrambling of image by randomizing pixel values

KUROYANAGI TOMOHIRO

Image forming apparatus, information processing system, and non-transitory computer-readable medium

MAEMURA KOICHIRO

Image forming system, information processing apparatus, and information processing method

ITOH SHINYA

Image processing apparatus, image processing method, and non-transitory recording medium

OUCHI SATOSHI

Image processing system, image processing method, and image processing device for auto color selection

MORI TAKUYA

Charge determining information processing apparatus, charge processing method, and computer-readable recording medium