公开(公告)号：US20190170585A1

公开(公告)日：2019-06-06

申请号：US16258569

申请日：2019-01-26

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Takashi OKADA ,  Tomohito MASUDA ,  Tetsuro MORIMOTO

IPC: G01J3/52 ,  B42D25/328 ,  G02B5/32 ,  G03H1/26 ,  G01J3/50 ,  G01J3/02 ,  G06T7/90 ,  G06K9/46 ,  H04N9/04

Abstract: This color calibration device is a color calibration device, calibrating colors in a captured image of a first imaging device between different imaging devices using a hologram emitting diffracted light at different frequencies corresponding to an observation angle, the color calibration device includes: a diffracted light spectral distribution calculation unit that obtains respective diffracted light spectral distribution of the diffracted light from the hologram; a camera sensitivity function estimation unit that estimates spectral sensitivity of the imaging device from the respective diffracted light spectral distribution of the diffracted light and each captured image of the diffracted light; and a color calibration unit that calibrates difference in color of the first imaging device relative to a second imaging device different from the first imaging device using the estimated spectral sensitivity.

公开(公告)号：US10308051B2

公开(公告)日：2019-06-04

申请号：US15466229

申请日：2017-03-22

Applicant: Seiko Epson Corporation

Inventor： Tsugio Gomi

IPC: G01J3/02 ,  G01J3/10 ,  B41J13/00 ,  G01J3/50 ,  G01J3/26

Abstract: A measurement device includes a light source that radiates an illumination light on a measurement object; and a measurement unit that measures a measurement light that is reflection light obtained by the illumination light being reflected by the measurement object or transmitted light obtained by the illumination light passing through the measurement object. The illumination light is a plurality of illumination lights. In a case where the measurement object is positioned at a reference position, an illumination center at which an optical axis of each of the plurality of illumination lights and the measurement object intersect, and a measurement center that is a center of a measurement region of the measurement object measured by the measurement unit are positioned at different positions.

公开(公告)号：US10302491B2

公开(公告)日：2019-05-28

申请号：US15507502

申请日：2015-08-28

Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION

Inventor： Stephen Gensemer ,  Reza Arablouei ,  Mingrui Yang ,  Wen Hu ,  Frank De Hoog

IPC: G01J3/18 ,  G01J3/02 ,  G01J3/433 ,  G01J3/28 ,  G06T9/00 ,  G01J3/14 ,  G01J3/50

Abstract: Apparatus for hyperspectral imaging, the apparatus including input optics that receive radiation reflected or radiated from a scene, a spatial modulator that spatially samples radiation received from the input optics to generate spatially sampled radiation, a spectral modulator that spectrally samples the spatially sampled radiation received from the spatial modulator to generate spectrally sampled radiation, a sensor that senses spectrally sampled radiation received from the spectral modulator and generates a corresponding output signal and at least one electronic processing device that controls the spatial and spectral modulators to cause spatial and spectral sampling to be performed, receives output signals and processes the output signals in accordance with performed spatial and spectral sampling to generate a hyperspectral image.

公开(公告)号：US10302489B2

公开(公告)日：2019-05-28

申请号：US15532222

申请日：2015-12-01

Applicant: INSTRUMENT SYSTEMS OPTISCHE MESSTECHNIK GMBH

Inventor： Felix Frank ,  Richard Young ,  Juliane Kraft ,  Reto Haring

IPC: G01J3/46 ,  G01J3/10 ,  G01J3/52 ,  G01J3/28 ,  G01J3/50

Abstract: The invention relates to a method for calibrating a spectroradiometer (1), comprising the following method steps: capture of light measurement data by the measurement of the radiation of at least one standard light source (4) using the spectroradiometer (1) that is to be calibrated; derivation of calibrated data from the light measurement data by the comparison of the captured light measurement data with known data of the standard light source (4); and calibration of the spectroradiometer (1) according to the calibration data. The aim of the invention is to provide a reliable and practical method for calibrating the spectroradiometer (1). In particular, the synchronism of spectroradiometers (1) situated in different locations (9, 10, 11) is to be produced simply and reliably. To achieve this aim, the validity, i.e. the usability, of the standard light source for the calibration is checked by a comparison of the light measurement data of the standard light source (4) with light measurement data of one or more additional standard light sources (4) of the same type, the validity of the standard light source (4) being established if the deviations of the light measurement data of the standard light sources (4) from one another lie below predefined limit values, and/or the standard light source (4) is measured using two or more standard spectroradiometers (1′) of the same type or of different types, the validity of the standard light source (4) being established if the deviations of the light measurement data from one another, said data being captured using the different standard spectroradiometers (1′), lie below predefined limit values.

公开(公告)号：US20190154569A1

公开(公告)日：2019-05-23

申请号：US16313167

申请日：2017-06-27

Applicant: Omri WARSHAVSKI

Inventor： Omri WARSHAVSKI

IPC: G01N21/31 ,  A61B5/00 ,  G01J3/02 ,  G01J3/50 ,  G01N21/25 ,  G01N21/47

Abstract: A color imaging system and method, the method comprising, for a plurality of predetermined wavelength bands of illumination, calculating weight coefficients representing the contribution of each of the wavelength bands to a specific color space, individually controlling illumination intervals of each of a plurality of illumination sources, wherein each of the illumination sources is configured to provide illumination via a waveguide in a different predetermined narrow band of wavelengths, controlling an image sensor to capture a set of monochromatic image frames synchronously with the illumination intervals, receiving a set of the captured monochromatic image frames, and generating color image data by calculating a combination of the set of image frames, each weighted by the corresponding coefficient.

公开(公告)号：US20190154506A1

公开(公告)日：2019-05-23

申请号：US16254216

申请日：2019-01-22

Applicant: Hand Held Products, Inc.

Inventor： Patrick Anthony GIORDANO ,  Stephen J. COLAVITO ,  Timothy GOOD ,  Erik VAN HORN ,  Sean Philip KEARNEY

IPC: G01J3/457 ,  G01J3/50

Abstract: A system and method of determining if a surface contains print or is a screen of a device is provided. The method is comprised of the steps of: acquiring a spectral wavelength signature of the surface; comparing the spectral wavelength signature of the surface to RGB triple-peak emission spectra; scanning the surface with an image-based scanner in non-illumination mode based upon the spectral wavelength signature of the surface corresponding to the RGB triple-peak emission spectra, and scanning the surface with an image-based scanner in illumination mode based upon the spectral wavelength signature of the surface not corresponding to the RGB triple-peak emission spectra.

公开(公告)号：US10288564B2

公开(公告)日：2019-05-14

申请号：US15950902

申请日：2018-04-11

Applicant: KONICA MINOLTA, INC.

Inventor： Takuma Morikawa ,  Yasutaka Tanimura ,  Yasushi Goto ,  Yusaku Kawahara ,  Shinji Yamamoto

IPC: G01N21/55 ,  G01N21/57 ,  G01J3/02 ,  G01J3/50 ,  G01N21/25 ,  G01N21/27 ,  G01N21/59 ,  G01J3/28

Abstract: A reflection characteristic measurement system includes: a hand-held reflection characteristic measurement apparatus including a light receiver that receives reflected light; and a guide member that supports the reflection characteristic measurement apparatus, wherein the guide member includes: a plate-shaped support part having a support surface to support the reflection characteristic measurement apparatus; and a white calibration plate applicable to white calibration of the reflection characteristic measurement apparatus, the support part includes: an elongated hole extending in one direction along the support surface; and a guide structure provided to guide the reflection characteristic measurement apparatus so as to enable the apparatus to move along the one direction, the light receiver is provided on the reflection characteristic measurement apparatus so as to move along a predetermined moving path, the moving path of the light receiver extends in the one direction, and the white calibration plate is provided on the moving path.

公开(公告)号：US10265873B2

公开(公告)日：2019-04-23

申请号：US15128393

申请日：2015-03-11

Applicant: LMT Lichtmesstechnik GmbH Berlin

Inventor： Carsten Diem ,  Thomas Reiners ,  Dieter Sorowka ,  Konstantin Radewald ,  Peter Lange

IPC: G01J3/50 ,  B25J19/06 ,  G01J1/02 ,  B25J19/00 ,  B25J19/02 ,  B25J19/04 ,  G05B19/4061 ,  G01J1/42

Abstract: A method and a gonioradiometer for the direction-dependent measurement of at least one photometric or radiometric characteristic of an optical radiation source. The emission direction of the photometric or radiometric characteristic is described using a system of planes (A, B, C), the planes of which intersect at an intersection line which passes through the radiation centroid of the radiation source, and using an emission angle (α, β, γ) which specifies the emission direction (α, β, γ) within a considered plane. A sensor or the radiation source is fastened to a multi-axis articulated robot. The robot is configured to only swivel about precisely one of its axes during a measuring process, in which measurement values relating to different emission angles (α, β, γ) within a considered plane of the system of planes (A, B, C) or to different planes at a considered emission angle (α, β, γ) are detected.

公开(公告)号：US20190108371A1

公开(公告)日：2019-04-11

申请号：US16215436

申请日：2018-12-10

Applicant: NEC Display Solutions, Ltd.

Inventor： Yoshinori Moriki ,  Yutaka Arai

IPC: G06K7/10 ,  G01J3/50 ,  G01J1/44 ,  G06F3/14

Abstract: A video signal monitoring method includes detecting at least one of luminance or chromaticity in a predetermined region among regions of a video displayed on a display device; converting the at least one of detected luminance or chromaticity into video identification information for identifying the video; and outputting the video identification information and a time at which the video was displayed.

公开(公告)号：US10254167B2

公开(公告)日：2019-04-09

申请号：US13936387

申请日：2013-07-08

Applicant: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED ,  LITE-ON TECHNOLOGY CORP.

Inventor： Yu-Kang Lu

IPC: G01J3/46 ,  G01J1/16 ,  G01J3/50 ,  G01N21/27 ,  G01J1/42

Abstract: A method for sorting a light source is to be implemented by a computer and includes configuring the computer to determine whether or not a to-be-sorted light source is different from a reference light source by comparing features of a curve associated with measured spectral data of the to-be-sorted light source, with features of a reference curve associated with reference spectral data of a reference light source.