Sharp Kabushiki Kaisha Corporation

Other

Synthesis Corporation

Noboru Kubo

Xiaomang Zhang

Hiroyuki Okuhata

Yukihiro Yoshida

Shigeru Yoshida

Kenji Mameda

Yumi Yamauchi

Akimasa Niwa

Atsushi Aoki

Yasuji Obuchi

Naoyuki Fukuda

Toshiyuki Iwai

Shuichiro Ono

Takuji Yoshida

Katsuji Kimura

Kunihiro Katayama

Seido Kawanaka

Tatsuya Nomura

Misao Takano

Tomoaki Sumita

Toshiyuki Kaya

Shinsuke Hamanaka

Kunihiko Iizuka

Eiji Ono

Kazuo Kinosita

Isao Shirakawa

A flicker correction apparatus for correcting a flicker component of an image signal obtained by imaging an object using an imaging device is provided. The apparatus comprises an image average calculation section for calculating an average of the image signal, a flicker frequency calculation section for calculating a flicker frequency, a flicker data extraction section for extracting flicker data using the average of the image signal and the flicker frequency, a flicker determination section for determining the presence or absence of a flicker phenomenon using the flicker data, a flicker correction amount calculation section for calculating a flicker correction amount using the flicker data, and a flicker correction section for removing the flicker component of the image data using the flicker correction amount.

Flicker correction apparatus and flicker correction method, and recording medium storing flicker correction program

A pixel defect detector of the present invention is used for a solid-state imaging device comprising a plurality of photoelectric transducers. The pixel defect detector includes: a calculation section for obtaining output characteristics of a subject photoelectric transducer for varied amounts of light incident thereupon so as to determine the presence/absence of a defect in the subject photoelectric transducer based on the output characteristics thereof.

Pixel defect detector for solid-state imaging device

A method is provided for correcting lightness of an image using a multiscale retinex. Lightness of a subject pixel of an original image is corrected using a convolution operation of a surround function and surround pixels with respect to the subject pixel of the original image, and the convolution operation is performed over a plurality of scales. The surround function has a simplified model such that a value of the surround function is changed in a stepwise way along two axes orthogonal to each other.

Method for correcting lightness of image

An image processing method includes the steps of: separating a luminance signal from a color signal of an original image, and multiscale retinex processing only the luminance signal; and producing an image based on the multiscale retinex processed luminance signal and the color signal of the original image.

Image processing method and image processing apparatus

A method for correcting lightness of an image includes the steps of: calculating a first scale and a second scale based on an image scale of an original image from image information of the original image; multiscale retinex processing the original image with respect to the first scale and the second scale; and synthesizing a result of the multiscale retinex processing with the image information of the original image.

Method and device for correcting lightness of image

An image processing apparatus includes a signal processing section for processing an image signal including a first signal and a second signal. The signal processing section processes the first signal and the second signal using different interpolation programs from each other.

Image processing apparatus

An image processing apparatus includes a plurality of imaging devices located at respective prescribed positions; at least one optical device for receiving light and projecting an image of the received light to the imaging devices; and an image processing section for processing respective images obtained by the imaging devices, wherein the imaging devices and the optical section form a single unit.

A computer device includes a processor for processing an object code containing a plurality of instruction words. It further includes a memory for storing a plurality of pseudoinstruction words respectively corresponding to the plurality of instruction words. Preferably, the number of bits of each of the plurality of pseudoinstruction words is less than that of each of the plurality of instruction words. Finally, the computer device includes an instruction word converter for converting the pseudoinstruction word read out from the memory into an instruction word of the object code, and for outputting the instruction word obtained by the conversion to the processor.

Computer device and method for processing data utilizing

The high speed semiconductor memory includes at least one memory module and a cache controller. The at least one memory module includes a plurality of memory cells for storing data and a cache memory for storing part of the data stored in the plurality of memory cells, The cache controller includes a hit ratio counter for obtaining an average cache hit ratio and a comparator storing a desired threshold hit value and comparing the average cache hit ratio with the desired threshold value. The cache controller determines whether data corresponding to an input address are stored in the cache memory and allows to readout such data from the cache memory, otherwise controlling the read-out of data from the plurality of memory cells for storage in the cache memory so as to update the contents of the cache memory. A request signal for transferring data from the memory cells to the cache memory is generated when the average cache hit ratio is lower than the desired threshold value. The high speed memory further includes a prediction controller for selecting data to be transferred from the memory cells to the cache memory.

High speed semiconductor memory including a cache-prefetch prediction

An information processing apparatus has a capability of opening two or more windows and processing an object such as text, graphics, and a picture on each page. This information processing unit includes a pasting unit for pasting a tag window at any location on each page, a registering unit for registering one or more objects in the tag window, and a linking unit for linking the page to the tag window or unlinking the tag window from the page.

Information processing apparatus capable of opening two or more windows

A character display apparatus with an attribute management unit for storing an attribute of a used font, a raster image storage unit for storing a raster image of the used font, and an image position management unit for storing a storage position of each raster image in the raster image storage unit in correspondence with each attribute of the attribute management unit. The character display apparatus also includes a judgment unit for judging whether a raster image of a character to be displayed is stored in the raster image storage unit or not, by referring to the attribute management unit and the image position management unit. The character display apparatus is further provided with a display unit for displaying an image of the character by use of the raster image in the raster image storage unit, in case that the raster image is stored therein.

Character display apparatus for displaying multiple-font characters with

An apparatus for editing documents input from an input device, capable of reducing a process time of renewing the documents to be displayed on a display device and capable of increasing a displaying speed of the renewed documents during an editing process includes a document storing unit for storing document data, a text-layout information storing unit for storing text-layout information separately in accordance with a preceding time and a succeeding time with respect to an editing operation, the text-layout information indicating positions of the document data on the display device at a time when the document data are displaying, a display image storing unit for storing image data, the image data being used for displaying the document data stored in the document storing unit on the display device in accordance with the text-layout information in the preceding time stored in the text-layout information storing unit, an editing unit for producing the text-layout information in the succeeding time from the text-layout information in the preceding time stored in the text-layout information storing unit and the document data stored in the storing unit in accordance with an indication input from the input device, and a processing unit for renewing the image data stored in the display image storing unit in accordance with a process of redisplaying characters and a process of transmitting the image data.

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Ikoma, Japan

Noboru Kubo