Kabushiki Kaisha Toshiba

Ryosuke Nonaka

Masahiro Baba

Yuma Sano

Goh Itoh

Wataru Watanabe

Toshimitsu Kaneko

Hisashi Kobiki

Takashi Sasaki

Nao Mishima

Satoshi Takayama

Honam Kwon

Koichi Ishii

Tsutomu Nakanishi

Risako Ueno

Tatsuya Tanaka

Mitsuyoshi Kobayashi

Tatsuo Kozakaya

Yuko Kizu

Yukio Kizaki

Norihiro Nakamura

Yasutoyo Takeyama

Tomoya Tsuruyama

Machiko Ito

According to one embodiment, a learning method, comprises receiving a first signal including a previous auxiliary variable value, previous action information regarding a previous action, or a set of previous scores, receiving current sensor data, selecting a current action of the control target based on the first signal, the current sensor data, and a parameter for obtaining a score from sensor data, causing the control target to execute the current action, receiving next sensor data and a reward, and updating the parameter based on the current sensor data, current action information regarding the current action, the next sensor data, and the reward. A degree of selecting a previous action as the current action is increased.

Learning method and program

According to one embodiment, a robot motion planning device includes processing circuitry. The processing circuitry receives observation information obtained by observing at least part of a movable range of a robot. The processing circuitry determines, in a case where first observation information is received, a target position to which the robot is to make a motion, using an action-value function and the first observation information. The processing circuitry receives measurement information obtained by measuring a state of the robot, calculates a difference corresponding to the first observation information, using the measurement information, and determines a motion plan of a force-controlled motion of the robot, based on the target position and the difference.

Robot motion planning device, robotic system, and method

An optical device includes a light-shielding layer and a microlens array. The light-shielding layer includes a plurality of openings. The microlens array is divided into a plurality of microlenses corresponding to the respective plurality of openings. A refractive index of the microlens array is variable so that light is incident on the microlenses is focused on the respective plurality of openings. A portion where light is focused includes a central position of the corresponding opening.

Optical device and head-mounted display device and imaging device equipped with the same

According to one embodiment, an information processor includes: a detector; a vector calculator; a determiner. The detector detects an object existing over a plurality of detection ranges set at distances different from one another from a reference surface and acquires representative points of the object based on detected position in the detection ranges. The vector calculator acquires a three-dimensional vector based on the representative points. The determiner determines an input operation by the object based on the three-dimensional vector.

Information processor, processing method, and projection system

According to one embodiment, there is provided an image processing apparatus including: first circuitry and second circuitry. The first circuitry sets for first color information in a first color gamut a correction quantity of a brightness defined depending on a lightness and a chroma of the first color information on a basis of a difference between a target brightness and the brightness of the first color information. The second circuitry corrects at least one of the lightness and the chroma of the first color information such that the brightness of the first color information is corrected by the correction quantity to obtain corrected color information in the first color gamut.

Image processing apparatus for correcting color information and method therefor

According to one embodiment, an image processor includes: an acquisitor; a predictor; a corrector. The acquisitor acquires information regarding shape of a projection surface on which a first image is projected, information regarding position of a viewpoint for observing the first image projected on the projection surface, and information regarding position of a projection point for projecting the first image. The predictor predicts a viewable region in which the first image projected on the projection surface is viewable from the viewpoint based on the acquired information regarding the shape, the acquired information regarding the viewpoint, and the acquired information regarding the projection point. The corrector corrects a second image to generate the first image, the second image being set within the viewable region.

Image processor, image processing method, and image projector

According to one embodiment, in an apparatus for generating a multi-viewpoint image, a separation unit separates a target image into a first diffuse reflection image and a first non-diffuse reflection image based on a pixel value of each pixel of the target image. The first non-diffuse reflection image has components except for the first diffuse reflection image. A first estimation unit estimates a change amount of each pixel among a plurality of first non-diffuse reflection images corresponding to viewpoints differently. A first generation unit generates a second non-diffuse reflection image by changing at least one of a shape and a luminance of each pixel of the first non-diffuse reflection image, based on the change amount of each pixel. A synthesis unit generates the multi-viewpoint image by synthesizing the first diffuse reflection image with the second non-diffuse reflection image. Each viewpoint image corresponds to each of the viewpoints.

Apparatus and method for generating a multi-viewpoint image

According to one embodiment, an image processing apparatus includes a chroma calculation unit, a lightness calculation unit, a glossiness calculation unit, and a correction unit. The chroma calculation unit is configured to calculate a chroma of each pixel of an image to be processed. The lightness calculation unit is configured to calculate a lightness of each pixel of the image. The glossiness calculation unit is configured to estimate a glossiness of each pixel of the image, based on the chroma and the lightness. The correction unit is configured to correct each pixel of the image so that a correction amount of a pixel is larger when the glossiness of the pixel is higher.

Apparatus and method for processing an image

According to one embodiment, an image display apparatus includes a liquid crystal panel, a backlight, a luminance distribution calculation unit, an error calculation unit, and an emission intensity update unit. The backlight includes a plurality of light sources which emit light. The luminance distribution calculation unit calculates a predicted value for an intensity distribution of light entering the liquid crystal panel if each of the light sources is lit with an emission intensity. The error calculation unit obtains a brightness of a display image which is realized if the each of the light sources is lit with the emission intensity, and the error calculation unit calculates an error between the obtained brightness and an ideal brightness of the display image corresponding to the input video signal. The emission intensity update unit updates the emission intensity of the each of the light sources to reduce the error.

Image display apparatus and information processing apparatus

The liquid crystal panel displays a video in a display area by modulating light from the backlight including a plurality of light sources. The luminance value calculator calculates light source luminance values of the light sources based on an input video signal including signal values of pixels. The luminance distribution calculator calculates luminance distribution of light in illumination areas obtained by tentatively dividing the display area if the light sources emit light according to the light source luminance values. The representative value calculator calculates, based on the input video signal, a representative luminance value in each of divided areas obtained by dividing the display area. The signal corrector corrects the input video signal based on the luminance distribution according to a difference between a maximum value of the representative luminance values and an average value of the representative luminance values.

Liquid crystal display

There is provided a liquid crystal display, including: a backlight having a plurality of light sources; a liquid crystal panel configured to display a video picture in a plurality of illumination regions corresponding to the light sources; an intensity value calculator calculating representative intensity values of the illumination regions based on an input video signal; a weight calculator performing a smoothing process on the representative intensity values by using first weights and to calculate second weights of the illumination regions having values which become larger as smoothed values of the representative intensity values becomes smaller than the representative intensity values; an intensity value corrector correcting the representative intensity values of the illumination regions based on the second weights and performe a smoothing process on corrected intensity values by using the first weights to obtain light source intensity values of the light sources.

Liquid crystal display for displaying an image using a plurality of light sources

According to one embodiment, a display apparatus includes a light modulating unit, a light source unit, a luminance setting unit, a luminance distribution calculating unit, a signal level converting unit, and a control unit. The light source unit includes a basic light source and an extended light source illuminating each of divisional areas into which the display area tentatively divided. The basic light source emits white light with first emission peak wavelengths. The extended light source emits light with a second emission peak wavelength being different from the first emission peak wavelengths and being within a range between shortest and longest wavelengths of the first emission peak wavelengths. The control unit is configured to generate a control signal controlling the basic light source and the extended light source so as to provide a period in which the basic light source and the extended light source simultaneously emit light.

Display apparatus

An image display apparatus includes: a backlight configured to emit light; a liquid crystal panel configured to modulate light emitted from the backlight to make an image display; a backlight luminance calculating unit configured to calculate a light-emission luminance of the backlight such that a center value of a luminance range displayable on the liquid crystal panel defined depending on the light-emission luminance of the backlight substantially agrees with a center value of luminances of pixels forming an input image; a backlight controlling unit configured to control light emission of the backlight so that the light from the backlight is emitted with the calculated light-emission luminance; a luminance correcting unit configured to correct the luminance of each pixel in the input image in accordance with the calculated light-emission luminance; and a liquid crystal controlling unit configured to control modulation of the liquid crystal panel based upon the corrected input image.

Image display apparatus and image display method

An image processing apparatus has a light source luminance calculating unit which calculates the luminances of the light sources of the plurality of colors of a back light based on an input image, a light source maximum value detecting unit which detects a light source maximum value that is the largest value in the light source luminances of the plurality of colors, a light source luminance correcting unit which corrects the light source luminances to obtain corrected light source luminances so as to reduce the difference among the light source luminances of the plurality of colors if the light source maximum value is smaller than a threshold value, a gradation conversion function calculating unit which calculates a gradation conversion function applied to the input image corresponding to each of the plurality of colors, by using the corrected light source luminance, and a control unit which converts the input image by using the gradation conversion function and outputs the input image to a liquid crystal panel and generates the luminance control signal by using the corrected light source luminance and outputs the luminance control signal to the back light.

Image processing apparatus, image processing method, and image display device

According to one embodiment, an image display device has a liquid crystal panel, a backlight, an intensity setting unit, a presumption unit, a signal correction unit, an error calculation unit and a control unit. The intensity setting unit sets intensities of the light sources, respectively. The presumption unit presumes color information based on intensity information representing the intensities. The signal correction unit corrects an input video signal according to the color information, and obtains a corrected video signal. The error calculation unit presumes a display image from the corrected video signal and the input video signal, and calculates display errors between the presumed display image and an input image corresponding to the input video signal. The control unit controls sets the intensities of the light sources as the emission intensities of the backlight so that the display errors obtained from the error calculation unit can be minimum.

Growing community of inventors

Kawasaki, Japan

Ryosuke Nonaka