Seiko Epson Corporation

Masanobu Kobayashi

Osamu Wada

Hideki Matsuda

Haruhisa Kurane

Danjun Zhao

Masaki Ishikawa

Tatsuhiro Hasu

A measuring device includes a first light receiving element that receives measurement light and outputs a first output value, and a second light receiving element that receives the measurement light and outputs a second output value which is different from the first output value. A weighted composition is performed on the first output value and the second output value.

Measuring device, electronic apparatus, and measuring method

An image processing device includes a compression circuit adapted to perform compression of image data after sorting the pixels in an arrangement included in a plurality of lines in image data into a plurality of lines corresponding respectively to color components, a memory adapted to store the image data thus compressed, and an expansion circuit adapted to expand the image data thus compressed to restore the arrangement of the pixels.

Image processing device and electronic apparatus using the same

An imaging device includes: an imaging unit that images a subject with three or more kinds of exposures, ratios of respective pairs of exposures of which adjacent to each other in an ascending order or a descending order are equal; and a combining unit that combines, on the basis of the ratios, pixel signals corresponding to the respective three or more kinds of exposures obtained by imaging the subject with the imaging unit.

Imaging device, imaging method, and electronic apparatus for dynamically determining ratios of exposures to optimize multi-stage exposure

An imaging control apparatus includes an HDR signal processor and a frame memory. The HDR signal processor obtains pixel data Sand Sobtained by imaging with a very short exposure time Tand a short exposure time Tearlier than obtaining pixel data Sobtained by imaging with a normal exposure time T, generates a luminance image data by separating illumination light component from the pixel data Sand S, the generation of the luminance image data starting when the pixel data Sis obtained, and generates a gain for tone mapping from the luminance image data. On the other hand, the HDR signal processor generates an HDR image data from the pixel data Sto S, the generation of the HDR image starting when the pixel data Sis obtained, and performs tone mapping by multiplying this image data by the gain.

Imaging control apparatus, imaging apparatus and imaging control method for compressing the dynamic range of image data

An image processor is the image processor generating composed image data by composite image data of plural images taken with different exposures, which includes an image data acquisition unit that acquires image data of images taken with different exposures, a reliability evaluation unit that evaluates the reliability of image data having different exposures acquired by the image acquisition unit, in which the image data acquired by the image acquisition unit includes image data of plural color components, according to image data of plural color components included in the image data, a color selection unit that selects image data of each color component from any of image data of plural images having different exposures based on the reliability obtained from the result of evaluation by the reliability evaluation unit and a composite unit that generates the composed image data by composite image data of respective color components selected by the color selection unit in the image data.

Image processor, image processing method and computer readable medium for image processing program

An image processing system and a projector project a calibration image onto a projection target, sense the calibration image to generate sensing information, and generate projection target region information based on the sensing information. The system and projector generate projection area information based on the sensing information, image distortion correction information based on the projection target region information and the projection area information, and correct an image signal based on the image distortion correction information so that image distortion is corrected. The system and projector project an image based on the image signal corrected by the distortion correction section, determine a first height/width ratio that indicates a height/width ratio of the projection target, generate the image distortion correction information to display an image at a first height/width ratio range and display an image at a desired height/width ratio when the first height/width ratio is not within the acceptable range.

Image processing system, projector, computer-readable medium, and image processing method

A projector including: an image projection section for projecting an image onto a rectangular screen through a liquid crystal panel; a position adjustment information generation section for generating position adjustment information based on position adjustment of the image made by a user; a correction information generation section for generating position correction information for correcting positions of four corners of the image on the screen based on the position adjustment information; and a correction section for correcting image information for projecting the image based on the position correction information.

Image processing system, projector, program, information storage medium, and image processing method

A projector includes a projection angle deriving section which generates projection angle information indicating an angle formed by a projection target area and projection light projected onto the projection target area; a projection distance deriving section which generates projection distance information indicating a distance from an aim area in the projection target area to a projection section which projects the projection light; a control information generation section which generates direction control information for aligning a projection direction of the projection light with a normal direction of the projection target area based on the projection angle information, and generates projection section control information for controlling the projection section so that the projection light is projected onto the aim area based on the projection distance information; a pedestal driver section which drives a pedestal which adjusts the projection direction of the projection light based on the direction control information; a control section which controls the projection section based on the projection section control information; and the projection section.

Projection control system, projector and projection control method

A projector including: an adjustment section which generates edit image information for projecting an edit image including a content image based on input image information and a position change detection image at least partially provided outside the content image; a sensing section which senses a screen onto which the edit image is projected and generates sensing information indicating a sensed image; a projection section which projects the edit image based on the edit image information; and a determination section which determines whether or not a relative position between the projection section and the screen has changed based on the sensing information.

Image processing system, projector, computer-readable medium and image processing method

To provide an image processing system and the like which can correct a distortion of a projected image through only a single sensor, a projector has a calibration image information generating section which generates image information used to display a rectangular calibration image; an image projection section which projects the calibration image onto a projection target, based on the image information; a sensing section which senses a region including the projected calibration image plane and generates sensing information; a projection area information generating section which generates shortest-distance projection area information based on the sensing information in such a state that a distance between the projection section and the projection target is different from the distance in an actual operating condition, and generates actual projection area information based on the sensing information in the actual operating condition; and a correction information generating section which generates image distortion correction information, based on the shortest-distance projection area information and actual projection area information.

Image processing system, projector, information storage medium and image processing method

A projector includes a calibration image information generation section, an image projection section which projects a calibration image, a sensing section which senses a region including the projected calibration image and a projection target through a sensing plane to generate sensing information, a projection target region information generation section which generates projection target region information which indicates coordinates of four corners of the projection target in a sensing region based on the sensing information, a projection area information generation section which generates projection area information which indicates coordinates of four corners of the calibration image in the sensing region based on the sensing information, a correction information generation section which generates image distortion correction information based on the projection target region information and the projection area information, and a distortion correction section which corrects image distortion based on the image distortion correction information.

Image processing system, projector, and image processing method

An image processing system including: a distortion correction section which corrects an image signal so as to adjust image distortion; an image projection section which projects an image based on the image signal; a sensing section which senses the projected image along an optical axis which does not coincide with an optical axis of the image projection section in order to generate sensing information; an image analysis section which generates edge point information and brightness index value distribution information, based on the sensing information, the edge point information showing a position of a predetermined edge point of the projected image in the sensed image, and brightness index value distribution information showing a distribution of brightness index values of the projected image; and a correction information generation section which generates projection distance information which shows a projection distance, based on the edge point information, and generates correction information for correcting the image signal, based on the projection distance information and the brightness index value distribution information.

Image processing system, projector, information storage medium, and image processing method

An image processing system enabling luminance regulation depending on displayed images is provided by a projector, the projector including: a signal input section which input an image signal; a signal output section which outputs a corrected image signal; an image projecting section; a correction table storage section which stores a correction table showing the relationship between a correction amount and a position in an image; an instruction input section which inputs instruction information representing a correction instruction from a user; and a luminance regulating section which corrects a luminance value of the input image signal to make a luminance value in a central portion of an image lower than the current luminance value of the center portion when uniformity improvement of luminance values in central and marginal portions of the image is desired, or corrects that to make a luminance value in a marginal portion of an image lower than the current luminance value of the marginal portion when emphasis of a central portion of the image is desired, based on the correction table and the instruction information.

A projector includes an image projection section, a sensor that senses a projected first calibration image at a low resolution and generates first sensing information, senses the first calibration image at a high resolution and generates third sensing information, and senses a second calibration image at a high resolution and generates second sensing information, a projection area detection section that generates projection area information, based on the first and second sensing information, a projection-target area detection section that generates projection-target area information, based on the first, second, and third sensing information, and an image distortion correction section that corrects distortion of an image projected by the image projection section, based on the projection area information and the projection-target area information.

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Suwa, Japan

Masanobu Kobayashi