Ricoh Company, Ltd.

Tooru Suino

Hiroyuki Sakuyama

Takanori Yano

Yukio Kadowaki

Keiichi Suzuki

Minoru Fukuda

Shogo Oneda

Yutaka Sano

Hiroyuki Shibaki

Etsuo Morimoto

Michael J Gormish

An image data processing device processes structured image data including background image data representing a background image, foreground image data representing a foreground image indicating a color and a gross shape, and mask data representing a mask image specifying a prescribed area of the foreground image to be overlaid on the background image. The image data processing device lightens a shade of the background image by applying background color lightening processing to the background data, and lightens a shade of the foreground image less than the shade of the background image by applying foreground color lightening processing to the foreground data.

Image data processing device, image forming apparatus, and recording medium

An image display apparatus is disclosed that includes an image projecting unit that projects a projection image on a projection screen, a written image capturing unit that captures a written image of a writing screen that is arranged opposite the projection screen, a written image area extracting unit that extracts a written image area from the captured written image captured by the written image capturing unit, an image compositing unit that composites the written image area extracted by the written image area extracting unit and the projection image projected by the image projecting unit. The written image area extracting unit includes an external light value detecting unit that detects an external light value and an image processing unit that performs an image correction process on the captured written image based on the external light value detected by the external light detecting unit.

Image display apparatus, image display method, and image display program

An apparatus for processing a non-interlaced image includes a wavelet transform part and a determination part. The wavelet transform part performs two-dimensional discrete wavelet transform of a level higher than or equal to level one on the data of the non-interlaced image. The determination part determines the movement speed of an object within the non-interlaced image based on at least the values of the wavelet coefficients of a 1LH sub-band of the wavelet coefficients obtained by the wavelet transform unit.

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

A method of transferring a code of a structured document including background and at least one set of foreground and mask, to an image reproducing unit which reproduces the structured document code into a document image, includes, for each set of the foreground and mask, performing control to give priority to code of the mask over code of the foreground.

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

An image processing apparatus is provided with a process unit to carry out a resolution conversion process and an image division process with respect to an input image, and a control unit to control a division number of the image division process depending on a size of an image display region and a resolution after the resolution conversion process. The division number indicates a number of divided image portions into which the input image is divided into by the image division process. The control unit may control the division number of the image division process depending on an image size of the input image in addition to the size of the image display region and the resolution after the resolution conversion process.

Image processing method, image processing apparatus and computer-readable storage medium

An image decoder comprises a code decompression/decoding unit that decodes code data produced through compression and encoding of image data, a power supply state detection unit that detects a current state of a power supply of the image decoder, and a controller that controls the code decompression/decoding unit based on the current state of the power supply so as to reduce power consumption in performing decompression and decoding of the code data.

Image coder and image decoder capable of power-saving control in image compression and decompression

An image processing apparatus is disclosed. The image processing apparatus includes a coefficient correction unit for correcting only a high frequency coefficient situated adjacent to a tile boundary of an encoded image data divided into non-overlapping tiles. The high frequency coefficient is corrected during a process of decoding the encoded image data.

Image processing apparatus, image processing method, and recording medium thereof to smooth tile boundaries

In an image processing apparatus, first code data including multiple sets of code data in which image data of multiple static images are compressed and encoded, are synthesized. The first code data are converted into second code data that are compressed and encoded to be a single code data sequence where a motion image aligns the static images in chronological order as consecutive frames. In addition, the second code data may be converted into the first code data.

Image processing apparatus and method for converting first code data sets into second code data for JPEG 2000 and motion JPEG 2000

An image decoding device for decoding a hierarchically encoded compressed code obtained by dividing an image into a plurality of tiles and performing discrete wavelet transform on the pixel values of the image tile by tile includes a tile boundary smoothing part that performs smoothing of tile boundary distortion on the image after the decoding by application of a low-pass filter. The tile boundary smoothing part controls the degree of smoothing of the low-pass filter according to the ratio of the decoding quantity to the entire quantity of the compressed code. The decoding quantity is the portion of the compressed code which portion is to be decoded.

Image decoding technique for suppressing tile boundary distortion

In an image processing apparatus, using distortion amount information showing how much a decoded image is degraded from an original image when data are eliminated from the data sequence is read from a code sequence in which the original image is compressed and encoded, an occurrence of an error in each unit of the code sequence is detected. A distortion amount of the decoded image against the original image is calculated when the code sequence is decoded after the data are eliminated from the code sequence by using the distortion amount information concerning the data in which the error is detected. Then, the decoding of the code sequence is cancelled based on a calculation result.

Image processing apparatus for using distortion amount information

A filtering processing unit of an image processor includes a component extraction unit, a character edge quantity calculation unit, and a correction unit corresponding to each of a plurality of frequency bands and direction components, and an adder. The component extraction unit extracts signals from a corresponding one of the frequency bands and direction components. The character edge quantity calculation unit calculates a character edge quantity from an output of a corresponding one of the component extraction units. The correction unit performs correction control to the output of a corresponding one of the component extraction units based on a character edge quantity calculated by a corresponding one of the character edge quantity calculation units. The adder adds outputs of all the correction units.

Image processor and image processing method for image enhancement using edge detection

An image sending apparatus is provided, in which the image sending apparatus comprises an analyzing syntax of code sequence data, a generation unit generating another code sequence data from the code sequence data by using the analysis result, a unit to measure the load of the generation unit; a unit to generate a parameter corresponding to the load, wherein the generation unit generates the another code sequence data by using the parameter such that the data amount of the another code sequence data to be sent is adjusted according to the load.

Image sending apparatus and image receiving apparatus for sending and receiving code sequence data

An encoding process and a recompression process of encoded data are disclosed that appropriately select low-order bit planes and low-order sub bit planes, codes corresponding to which are not to be output. The low-order bit planes and low-order sub bit planes are selected based on an inverse value of the square root of the subband gain of inverse wavelet transform, such that the selected low-order bit planes and low-order sub bit planes are not encoded, or alternatively, are encoded, but later discarded during packet generation.

Growing community of inventors

Kanagawa, Japan

Tooru Suino