Canon Kabushiki Kaisha

Fuji Xerox Co., Ltd.

Akihiro Ouchi

Yukihiko Sakashita

Kenji Suzuki

Hayao Ohzu

Kazuyuki Yagata

Hibiki Sasaki

Hiroaki Yagi

Koichi Sato

Yoshihiro Enomoto

Mitsuaki Kuroda

Yoshihisa Nakao

Shigehiro Kadota

Yoshiya Mashimo

Ayaka Miyoshi

Hirofumi Goto

Shinichi Kanaya

Mamoru Miyawaki

Yusuke Sakai

Tetsunobu Kochi

Katsumi Kurematsu

Atsushi Okuyama

Katsuhisa Ogawa

Akihiro Matsushita

Hiroyuki Kodama

Arichika Tanaka

Toshiyuki Matsui

Hirohisa Hoshino

Kaoru Matsushita

Koji Deguchi

Ryosuke Mizuno

Hideki Matsumoto

Toru Ozawa

Taro Mitsui

Yuichi Fujisawa

Makoto Matsuura

Satoshi Ogi

A projection control apparatus includes an acquisition unit configured to acquire a captured image of a projection plane on which a first image is projected by a projection unit, a specification unit configured to specify an image projection area of the projection unit within the captured image acquired by the acquisition unit, an association unit configured to, in the captured image of the projection plane on which a second image different from the first image is projected by the projection unit, associate coordinates on the image projection area specified by the specification unit with coordinates managed by the projection unit, and a control unit configured to calculate distortion correction parameter for the projection unit by using an association result of the between the coordinates by the association unit. The projection control apparatus can reduce the time for adjustment of a projection image shape.

Projection display system, information processing apparatus, information processing method, and storage medium therefor

It aims to enable to uniform synthesized luminance in an image overlap region of a projection image by a simple process, by means of a mechanism of: performing display control to project a black image as the projection image to be projected from a first projection-type image displaying apparatus to a screen, and project, as the projection image to be projected from a second projection-type image displaying apparatus to the screen, an image in which dimming correction to the overlap region of the projection images respectively projected by the first and second projection-type image displaying apparatuses has been enabled; measuring a luminance characteristic of the second projection-type image displaying apparatus based on a photographed image obtained by photographing the overlap region; and setting a dimming correction characteristic for the overlap region by the first projection-type image displaying apparatus, based on the measured luminance characteristic.

Image displaying system, controlling method of image displaying system, and storage medium

A display control apparatus causes a plurality of images to be arranged and projected by a plurality of projection units. An obtaining unit obtains an overlap value for indicating a width at which a portion of a first image and a portion of a second image overlap. A control unit causes the plurality of projection units to project the plurality of images which includes at least the first image and the second image by overlapping the portion of the first image and the portion of the second image by a width based on the overlap value. Also, the control unit causes the portion of the first image and the portion of the second image to overlap by the width based on the overlap value by changing a size of a projected image.

Display control apparatus, control method thereof and storage medium

A display control apparatus which projects and displays at least one image on a screen, converts a frame frequency for a display of the at least one image to N times (N&#x3e;1), generates an added image by adding a predetermined pattern to the converted frame and a subtracted image by subtracting the predetermined pattern from the converted frame as a first frame and a second frame following the first frame, projects the generated first frame and the second frame for an image on the screen at the N-times frequency, acquires the image projected on the screen, extracts the pattern from the acquired image, and corrects a shape of the image based on the extracted pattern.

Display control apparatus, method of controlling the same, and non-transitory computer-readable storage medium

A multiscreen display is formed in which changes in luminance between an image overlap area and areas outside the image overlap area are less visible across a range of low to high gradations. An offset correction value Doffset that is linearly decreased at the lowest gradation of the input image signal so that the offset correction value becomes 0 at gradations higher than the predetermined gradation Lset, is added to an input image signal.

Projection type image display apparatus, method, and storage medium in which changes in luminance between an image overlap area and an area outside the image overlap area are less visible

An image processing apparatus includes a detection unit, a size changing unit, and a determining unit. The detection unit detects, from a first captured image obtained by capturing a projection image projected by a projection unit, a vertex of the projection image. The size changing unit reduces a size of the projection image in response to the detection unit not detecting a predetermined number of vertexes of the projection image from the first captured image. The determining unit determines a distortion correction parameter to be used for correcting a distortion of a projection image projected by the projection unit, in accordance with a detection result of vertexes by the detection unit for a second captured image obtained by capturing the size-reduced projection image in a case where the detection unit detects the predetermined number of vertexes of the size-reduced projection image from the second captured image.

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

An image processing apparatus comprises a specification unit configured to, from a multi-screen display corresponding to multi-screen displays performed by a plurality of projection apparatuses, specify an overlapping region in which first and second projection regions for first and second projection apparatuses overlap; a determination unit configured to, based on the positions of the overlapping regions in the first and second projection regions, determine luminance correction coefficients corresponding to the overlapping region such that the luminance correction coefficient at a coordinate corresponding to a first vertex in the overlapping region and a luminance correction coefficient at a coordinate corresponding to a second vertex located diagonally opposite to the first vertex in the overlapping region are different; and a correction unit configured to correct luminance of image data for the multi-screen display, based on the determined correction coefficients.

Image processing apparatus, image processing method, and storage medium

An image processing apparatus, which generates low gradation luminance correction values with respect to an overlap region and a non-overlap region of a plurality of images constituting a multi-screen display, generates the low gradation luminance correction values so as to make the values gradually change from the overlap region throughout the non-overlap region.

Image processing apparatus, image processing method and storage medium

An image processing apparatus includes an analyzing unit, a changing unit, and a control unit. The analyzing unit analyzes a projection image projected by a projection unit. The changing unit changes, depending on an analysis result obtained by the analyzing unit for the projection image, dimensions of the projection image projected by the projection unit so as to obtain a resized projection image. The control unit performs control for correcting a distortion of the projection image projected by the projection unit, in accordance with an analysis result obtained by the analyzing unit for the resized projection image.

An image processing apparatus corrects a luminance level of an overlap region of projection screens projected by a plurality of image display apparatuses. The image processing apparatus includes: a coordinate conversion unit configured to convert a coordinate value of the overlap region into a coordinate value of an overlap region of not less than a maximum overlap region width; an interpolation calculation unit configured to select two luminance correction data using the converted coordinate value, and to calculate a luminance correction coefficient by interpolating the luminance correction data using the selected luminance correction data and the converted coordinate value; and a correction unit configured to correct the luminance level of the overlap region using the luminance correction coefficient.

An image display apparatus according to an embodiment of the present invention includes: a moving unit configured to move a display position of an image displayed on a display screen; a setting unit configured to set a compressed image display area in the image; and a compression unit configured to, when a nondisplay area that is not displayed on the display screen is created in the image by the moving unit, compress the nondisplay area so that the nondisplay area fits within the compressed image display area and is displayed on the display screen.

Image display apparatus and image display method

A transfer device includes a first support member that supports a wound member, an endless transferred body being wound around the wound member; a second support member that supports a transfer member, the transfer member and the wound member pinching the transferred body and a recording medium, the transfer member causing a developer image on the transferred body to be transferred onto the recording medium; a coupling portion that couples the second support member to the first support member so that an angle of the second support member is changeable relative to the first support member; and an urging portion that is provided at the first support member and urges the second support member in a direction in which the transfer member presses the wound member.

Transfer device and image forming apparatus for increasing relative positional accuracy between a transfer member and a wound member

A powder container includes a container body for storing powder, the container body having an introduction port from which the powder is introduced; a transport member having one end provided, in a rotatable manner, on a side wall of the container body, at a position below the introduction port, and the other end serving as a free end that is displaced upward as the amount of powder recovered in the container body increases, the transport member transporting the powder from the one end to the other end by being rotated; and guide portions provided on the container body to guide the transport member in directions intersecting a direction in which the other end of the transport member is displaced as the transport member is displaced upward.

Powder container and image forming apparatus

A rotation shaft coupling structure includes a roller drive shaft including a recessed portion having an internal thread; a rotation roller including a coupling member housing the recessed portion of the roller drive shaft; and a coupling shaft extending through the rotation roller in the axial direction. The coupling shaft includes a threaded portion at a first end portion thereof, the threaded portion mating with the internal thread of the recessed portion, and the coupling shaft couples the roller drive shaft and the rotation roller to each other. The first end portion of the coupling shaft in the axial direction is joined to the roller drive shaft and the rotation roller in the coupling member of the rotation roller, and a second end portion of the coupling shaft in the axial direction is a free end that allows the coupling shaft to extend and contract in the axial direction.

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Tokyo, Japan

Akihiro Ouchi