Canon Kabushiki Kaisha

Osamu Sagano

Naoto Abe

Hiroshi Saito

Takeshi Ikeda

Kohei Inamura

Hiroki Uchida

Yoshihiko Iwase

Makiko Mori

Tatsuro Yamazaki

Muneki Ando

Makoto Sato

Akira Fujii

Ritsuya Tomita

Mitsutoshi Kuno

Kazuhiko Murayama

Kazumasa Tanaka

Juun Horie

Norihiko Miyachi

Riuma Takahashi

Daisuke Kawase

An apparatus includes an obtaining unit configured to obtain, using an optical coherence tomography, an analysis map for a disk and an analysis map for a macular area, which are analysis results of three-dimensional data obtained by capturing an image of a region of a fundus of a subject's eye that includes the disk and the macular area, and a control unit configured to cause a display unit to display side by side a two-dimensional image of the region including the disk and the macular area, the analysis map for the optic disk, and the analysis map for the macular area.

Image processing apparatus, image processing method, and storage medium

An image processing apparatus includes: an obtaining unit configured to obtain a first image of an eye to be examined; an image quality improving unit configured to generate a second image with at least one of lower noise and higher contrast than the obtained first image using the obtained first image as an input data of a learned model, wherein the learned model has been obtained by using training data including a second image with at least one of lower noise and higher contrast than a first image of an eye to be examined; and a display controlling unit configured to cause the obtained first image and the generated second image to be switched, juxtaposed or superimposed and displayed on a display unit.

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

The optical coherence tomography apparatus is an optical coherence tomography apparatus that obtains a tomographic image of an eye to be examined by using combined light obtained by combining (a) return light from the eye to be examined irradiated with measurement light and (b) reference light, the optical coherence tomography apparatus including an optical path length difference changing unit arranged to change an optical path length difference between the measurement light and the reference light, a driving unit arranged to drive the optical path length difference changing unit, a determining unit configured to determine, using a learned model, a driving amount of the driving unit from the obtained tomographic image, and a controlling unit configured to control the driving unit using the determined driving amount.

Optical coherence tomography apparatus, control method for optical coherence tomography apparatus, and computer-readable storage medium

An image processing apparatus capable of easily generating a two-dimensional panoramic image at a high speed from a plurality of three-dimensional images includes an acquisition unit configured to acquire a generation condition of a first en-face image generated from a first three-dimensional image of an target eye, a first generation unit configured to generate a second en-face image from a second three-dimensional image of the target eye by applying the generation condition acquired by the acquisition unit to the second three-dimensional image, and a second generation unit configured to generate a combined image by combining the first en-face image with the second en-face image.

A first area and a second area are set for a first two-dimensional tomographic image where the first area and the second area overlap each other in a partial area in a horizontal direction of the first two-dimensional tomographic image. A positional deviation amount between the first two-dimensional tomographic image and a second two-dimensional tomographic image is obtained in each of the first area and the second area. A moving amount of the second two-dimensional tomographic image is determined with respect to the first two-dimensional tomographic image in an area where the first area and the second area overlap based on the positional deviation amount in the first area and the positional deviation amount the second area. Alignments are performed on the first two-dimensional tomographic image and the second two-dimensional tomographic image in an area where the first area and the second area overlap based on the moving amount.

Image processing apparatus, alignment method and storage medium

An image processing apparatus includes first alignment means configured to perform an alignment in a horizontal direction on a plurality of two-dimensional tomographic images based on measurement light controlled to scan an identical position of an eye according to a first method, and second alignment means configured to perform an alignment in a depth direction on the plurality of two-dimensional tomographic images according to a second method that is different from the first method.

A brightness control unit includes: a 'feedback brightness control unit' that calculates a first gain from a corrected image data and multiplies the first gain by image data prior to correct; and a 'feedforward brightness control unit' which, when a scene change is detected, calculates a second gain on the basis of a difference between the first gain which is calculated from the corrected image data and the first gain which has been multiplied by the pre-correction image data of the corrected image data in order to correct the difference, and multiplies the second gain by the corrected image data.

Image processing apparatus and control method thereof

An image display apparatus includes: a correction circuit that outputs corrected data based on luminance data designating luminance of display devices, and a modulation circuit that outputs a pulse width modulation signal for driving the display device to the column wiring based on the corrected data. The correction circuit includes: a luminance calculation circuit that calculates luminance including an effect of a voltage drop in the row wiring and an effect of a light emission time of the display device for each predetermined time slot; an accumulation circuit that temporally accumulates the luminance for each time slot; and a corrected data determination circuit that outputs, as the corrected data, a value determined in accordance with the time slot at a time point when an accumulated luminance value obtained by the temporal accumulation reaches a target luminance value.

Image display apparatus, correction circuit thereof and method for driving image display apparatus

There is provided an image display apparatus including: a first correction unit for outputting data to determine a lighting time of a first pixel on the basis of data to indicate luminance of the first pixel, wherein the first correction unit carries out first correction to compensate a loss of the luminance of the first pixel; and a second correction unit for outputting data to determine a lighting time of a second pixel on the basis of data to indicate luminance of the second pixel, wherein the second correction unit carries out second correction to compensate a loss of the luminance of the second pixel by predicting a lighting state of the first pixel that is corrected by the first correction.

Image display apparatus and driving method of image display apparatus

A correction circuit includes a timing control circuit for dividing a drive period assigned for drive of display devices into plural calculation slots, a luminance calculation circuit for calculating luminance including an effect of a voltage drop for each calculation slot, an accumulation circuit for temporally accumulating the luminance for each calculation slot, a corrected data determination circuit for outputting, as a corrected data, the value determined in accordance with the calculation slot at the time point when the accumulated luminance reaches a target luminance value, and a conversion circuit for converting the corrected data into modulation data to be applied to a modulation circuit. The width of the calculation slot is shorter than the width of the slot for pulse width modulation in at least a part of the drive period. The conversion circuit reduces the bit width of the corrected data by pseudo-gradation processing.

For decreasing hardware for correction to compensate for decrease of luminance due to decrease in drive voltage of devices, a plurality of electron-emitting devices are arranged in a matrix pattern and wired by a plurality of row and column lines, a column wiring driving unit applies voltage pulses to the column lines, and row wiring driving units apply voltages to the row lines to switch a row to be selected. The image signal processing unit divides a luminance level of an image signal into plural areas in the signal amplitude direction in response to each split timing signal. There are provided means for detecting frequencies of luminance signals included in the respective amplitude areas, a correction quantity calculating unit for outputting correction signals based on the detected values, and an adding unit for adding the correction signals and luminance signals, which outputs results of addition as electron emission requirements to the column wiring driving unit.

Display apparatus and display method

An image processing method comprising: reading out corrected data from a memory which prestored the corrected data, by referring to low P bit (P is an integer number &#x2267;1, and &#x2266;to M) in M bits digital image data (M is an integer number &#x2267;to 2); calculating corrected data based on data for operation read out from the memory which prestored the data, wherein the data is read out by referring to high R bit (R is an integer number &#x2267;1, and &#x2266;M&#x2212;1) in the digital image data; and outputting the read-out corrected data in a case that a value of the digital image data is not greater than a predetermined value, and outputting the calculated corrected data in a case that the value is greater than the predetermined value.

Image processing method, image display apparatus, and television apparatus

The invention provides an image display apparatus and an image display method of excellent image quality, by correcting the voltage drop resulting from the electrical resistance of the wirings with a simple configuration. There are provided adjustment data calculation means for calculating, for input image data, adjustment data for correcting the influence of the voltage drop resulting from the electrical resistance of the row wirings and gray scale number converting means for converting the number of gradation levels of the adjustment data. Modulation means outputs a signal modulated in the voltage amplitude to each column wiring, based on the adjustment data outputted by and subjected to the conversion of gradation levels by the gray scale number converting means.

Image display apparatus

An image display apparatus includes an image display devices driven in a matrix by a plurality of row wirings and column wirings, a scanning circuit for sequentially selecting and scanning the row wirings, a modulation circuit for applying a modulated signal, voltage amplitude of which varies in one pulse signal, to the column wirings, and a voltage drop compensation circuit for calculating corrected image data for reducing an influence of voltage drops due to at least resistance components of the row wirings, with respect to image data. The voltage drop compensation circuit include an effective voltage calculating circuit for finding an effective voltage value on the basis of the image data, and a compensation value calculating circuit for calculating a compensation value for reducing an influence of voltage drops due to at least resistance components of the row wirings, with respect to the effective voltage value. The modulation circuit outputs a modulated signal, a voltage amplitude of which varies in one pulse signal, on the basis of the corrected image data.

A modulation circuit that outputs modulation signals, comprising: a memory circuit that stores waveform data that determines the time width of a portion of a modulation signal, the portion being adjusted to a predetermined amplitude value, the waveform data being stored in such a manner as to output a plurality of modulation signals; and a circuit that generates the modulation signals, based on the waveform data and input gradation data.

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Tokyo, Japan

Osamu Sagano