WO2009107471A1 - 赤外線撮像装置および固定パターンノイズ補正方法 - Google Patents
赤外線撮像装置および固定パターンノイズ補正方法 Download PDFInfo
- Publication number
- WO2009107471A1 WO2009107471A1 PCT/JP2009/052057 JP2009052057W WO2009107471A1 WO 2009107471 A1 WO2009107471 A1 WO 2009107471A1 JP 2009052057 W JP2009052057 W JP 2009052057W WO 2009107471 A1 WO2009107471 A1 WO 2009107471A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- infrared
- sensor
- refractor
- infrared sensor
- imaging device
- Prior art date
Links
- 238000003331 infrared imaging Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims description 15
- 230000000007 visual effect Effects 0.000 claims description 32
- 230000005284 excitation Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 150000004770 chalcogenides Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/07—Arrangements for adjusting the solid angle of collected radiation, e.g. adjusting or orienting field of view, tracking position or encoding angular position
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/0801—Means for wavelength selection or discrimination
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/0803—Arrangements for time-dependent attenuation of radiation signals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/084—Adjustable or slidable
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
- H04N25/63—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to dark current
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
- H04N25/67—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to fixed-pattern noise, e.g. non-uniformity of response
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
- H04N25/67—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to fixed-pattern noise, e.g. non-uniformity of response
- H04N25/671—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to fixed-pattern noise, e.g. non-uniformity of response for non-uniformity detection or correction
- H04N25/673—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to fixed-pattern noise, e.g. non-uniformity of response for non-uniformity detection or correction by using reference sources
- H04N25/674—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to fixed-pattern noise, e.g. non-uniformity of response for non-uniformity detection or correction by using reference sources based on the scene itself, e.g. defocusing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/30—Transforming light or analogous information into electric information
- H04N5/33—Transforming infrared radiation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0077—Imaging
Definitions
- the present invention relates to an infrared imaging device and a fixed pattern noise correction method.
- An infrared imaging device such as an infrared camera is configured to collect infrared light from a subject with an infrared lens and detect the collected infrared light with an infrared sensor.
- the infrared sensor has a problem that the luminance of the output signal varies from pixel to pixel. This problem is caused by the fact that FPN (Fixed Pattern Noise) included in the output signal of the infrared sensor is different for each pixel.
- FPN Fixed Pattern Noise
- the FPN in order to ensure the image quality of the image, the FPN must be removed from the output signal of the infrared sensor, and for that purpose, the FPN needs to be corrected. This correction is called FPN correction.
- FPN correction As a method of FPN correction in an infrared imaging device, there is a method of performing FPN correction by utilizing the fact that the luminance of the output signal of the infrared sensor changes according to the change of the infrared light incident on the infrared sensor.
- This FPN correction is called scene-based FPN correction (Scene-based FPN correction) or scene-based NUC (Scene-based Nonuniformity Correction).
- Non-Patent Documents 1 and 2. a method for obtaining FPN for each pixel based on a change in luminance of an output signal of an infrared sensor according to a change in infrared light incident on the infrared sensor is described in Non-Patent Documents 1 and 2. Is disclosed in detail.
- the change of the infrared light incident on the infrared sensor is required for the movement of the infrared imaging device itself or the subject.
- the movement of the infrared imaging device requires a large amount of power according to the size of the infrared imaging device, the external structure of the infrared imaging device is limited.
- an object of the present invention is to provide an infrared imaging device and a fixed pattern noise correction method capable of solving the above-described problems.
- the infrared imaging device of the present invention is An infrared lens that collects infrared light, an infrared sensor that detects the collected infrared light, and an image signal that obtains an image signal by removing fixed pattern noise for each pixel from the output signal of the infrared sensor
- An infrared imaging device having an output unit, A sensor visual field control unit that changes a visual field of the infrared sensor with respect to infrared light incident on the infrared sensor; And an overall control unit for obtaining fixed pattern noise for each pixel based on the luminance of the output signal of the infrared sensor when the visual field of the infrared sensor is changed.
- the fixed pattern noise correction method of the present invention includes: A fixed pattern noise correction method by an infrared imaging device that obtains an image signal by removing fixed pattern noise for each pixel from an output signal of an infrared sensor that detects infrared light collected by an infrared lens, Changing the field of view of the infrared sensor relative to the infrared light incident on the infrared sensor; Obtaining fixed pattern noise for each pixel based on the luminance of the output signal of the infrared sensor when the visual field of the infrared sensor is changed.
- the sensor visual field control unit that changes the visual field of the infrared sensor with respect to the infrared light incident on the infrared sensor is provided.
- the infrared light incident on the infrared sensor can be changed without moving the infrared imaging device and the subject, the effect of performing stable scene-based FPN correction can be obtained.
- FIG. 1 is a diagram showing a configuration of an infrared imaging device according to the present embodiment.
- the infrared imaging apparatus of the present embodiment includes an infrared lens 11, an infrared sensor 12, a sensor visual field control unit 13, an amplification unit 14, an A / D conversion unit 15, and an overall control unit 16.
- the infrared lens 11 collects infrared light from the subject.
- the infrared sensor 12 detects infrared light collected by the infrared lens 11.
- the output signal of the infrared sensor 12 is amplified by the amplifier 14, converted into a digital signal by the A / D converter 15, and then input to the overall controller 16 and the image signal output unit 18.
- the sensor visual field control unit 13 changes the visual field of the infrared sensor 12 with respect to the infrared light incident on the infrared sensor 12.
- the overall control unit 16 controls the sensor visual field control unit 13 to change the visual field of the infrared sensor 12 at the time of FPN correction. Then, the overall control unit 16 obtains the FPN for each pixel based on the luminance of the output signal of the infrared sensor 12 when the visual field of the infrared sensor 12 is changed, and stores the obtained FPN in the compensation data memory 17 as compensation data. Store.
- the FPN correction is automatically performed when the apparatus is activated or when a change in environmental temperature is detected by a temperature sensor (not shown).
- the image signal output unit 18 obtains an image signal by removing the FPN and compensating the output signal of the infrared sensor 12 based on the compensation data stored in the compensation data memory 17, and the obtained image signal is converted into an image.
- the image signal stored in the image memory 19 is output to a display device or the like via an interface (not shown).
- the sensor visual field control unit 13 that changes the visual field of the infrared sensor 12 with respect to the infrared light incident on the infrared sensor 12 is provided.
- the feature of the present embodiment is that the field of view of the infrared sensor 12 is changed by the sensor field of view control unit 13 and is based on the change in luminance of the output signal of the infrared sensor 12 according to the change of the field of view of the infrared sensor 12.
- the method disclosed in Non-Patent Documents 1 and 2 can be used as the method for obtaining the FPN for each pixel, detailed description thereof is omitted.
- FIG. 2 is a diagram illustrating a configuration of the sensor visual field control unit 13 according to the first embodiment of the present invention.
- the sensor visual field control unit 13 includes a refractor 21 and a refractor angle control unit 22.
- the refractor 21 is disposed between the infrared lens 11 and the infrared sensor 12 and refracts the infrared light collected by the infrared lens 11.
- the refractor 21 is not particularly limited as long as it refracts infrared light.
- a material made of a material such as germanium, chalcogenide, sapphire, or plastic can be used.
- the refractor angle control unit 22 changes the angle of the refractor 21 with respect to the infrared light.
- FIG. 3 is a diagram illustrating a configuration example of the refractor angle control unit 22.
- the refractor angle control unit 22 of this example includes a shaft 23, a solenoid 24, and a drive unit 25.
- the shaft 23 is a rod-shaped shaft connected to the lower part of the refractor 21. Note that the movement of the upper part of the refractor 21 is limited to vertical movement only.
- the solenoid 24 is composed of a plunger that operates integrally with the coil and the shaft 23, and the plunger moves by excitation of the coil. Therefore, when the plunger moves due to the excitation of the coil, the connecting portion between the refractor 21 and the shaft 23 moves in the left-right direction in FIG. 3, thereby changing the angle of the refractor 21 with respect to infrared light.
- the drive unit 25 excites the coil of the solenoid 24.
- FIG. 4 is a diagram illustrating another configuration example of the refractor angle control unit 22.
- the refractor angle control unit 22 of this example includes a shaft 26, a gear 27, and a drive unit 28.
- the shaft 26 is a rod-shaped shaft connected to the lower part of the refractor 21. Further, a tooth profile 26 a is formed on the shaft 26 along the moving direction of the shaft 26. Note that the movement of the upper part of the refractor 21 is limited to vertical movement only.
- the gear 27 is configured to mesh with the tooth profile 26 a of the shaft 26. Therefore, when the gear 27 rotates, the connecting portion between the refractor 21 and the shaft 23 moves in the left-right direction in FIG. 4, thereby changing the angle of the refractor 21 with respect to infrared light.
- the driving unit 28 rotates the gear 27.
- the refractor 21 disposed between the infrared lens 11 and the infrared sensor 12 and the refractor angle control unit 22 that changes the angle of the refractor 21 with respect to the infrared light are provided. Provided.
- the optical path of the infrared light is changed, so that the field of view of the infrared sensor 12 with respect to the infrared light can be changed.
- the field of view of the infrared sensor 12 can be changed by changing the angle of the refractor 21 with respect to the infrared light in any of vertical, horizontal, and diagonal directions. Therefore, the angular direction of the refractor 21 with respect to the infrared light is not limited to the angular directions shown in FIGS.
- FIG. 5 is a diagram illustrating a configuration of the sensor visual field control unit 13 according to the second embodiment of the present invention.
- the sensor visual field control unit 13 has a lens eccentric movement control unit 31 that moves the infrared lens 11 eccentrically while keeping the incident surface of the infrared light constant. Yes.
- FIG. 6 is a diagram illustrating a configuration example of the lens eccentricity movement control unit 31.
- the lens eccentric movement control unit 31 of this example includes a lens holding member 32, a gear 33, and a drive unit 34.
- the lens holding member 32 holds the infrared lens 11 such that the center of the infrared lens 11 is decentered with respect to the center of the own lens holding member 32.
- a tooth profile 32 a is formed on the outer periphery of the lens holding member 32.
- the gear 32 is configured to mesh with the tooth profile 32 a on the outer periphery of the lens holding member 32. Therefore, when the gear 32 rotates, the lens holding member 32 rotates, and thereby the infrared lens 11 held by the lens holding member 32 moves eccentrically.
- the driving unit 33 rotates the gear 32.
- the lens eccentric movement control unit 31 for moving the infrared lens 11 eccentrically is provided.
- the optical axis of the infrared light is changed, so that the field of view of the infrared sensor 12 with respect to the infrared light can be changed.
- the lens eccentric movement control unit 31 is integrated with the focus adjustment mechanism, and when the infrared lens 11 is rotated for focus adjustment, the infrared lens 11 is eccentrically moved so that compensation data can be obtained. It may be structured.
- FIG. 7 is a diagram illustrating a configuration of the sensor visual field control unit 13 according to the third embodiment of the present invention.
- the sensor visual field control unit 13 moves the infrared sensor 12 in parallel (vertical direction in FIG. 7) while keeping the infrared light incident surface constant.
- a control unit 41 is provided.
- FIG. 8 is a diagram of the sensor movement control unit 41 as viewed from the X direction of FIG. 7
- FIG. 9 is a diagram of the sensor movement control unit 41 as viewed from the Y direction of FIG.
- the sensor movement control unit 41 of this example includes a guide groove 42, a guide rail 43, an actuator 44, and a drive unit 45.
- the guide groove 42 is two parallel concave grooves attached to the back surface of the infrared sensor 12 facing the infrared lens 11.
- the guide rail 43 is two parallel convex rails that are disposed on the back side of the infrared sensor 12 and engage with the two guide grooves 42, respectively.
- the actuator 44 moves the infrared sensor 12 in parallel along the guide rail 43 while keeping the infrared light incident surface constant.
- the actuator 44 can be a piezoelectric element such as a piezo element that expands and contracts when a voltage is applied.
- the piezoelectric element expands and contracts due to the application of voltage, the infrared sensor 12 moves in the vertical direction in FIG.
- the actuator 44 may be a solenoid that moves integrally with the coil and the infrared sensor 12, and the plunger moves by excitation of the coil. In this case, when the plunger is moved by exciting the coil, the infrared sensor 12 is moved in the vertical direction in FIG.
- the driving unit 45 drives the actuator 44.
- the drive unit 45 applies a voltage to the piezoelectric element when the actuator 44 is a piezoelectric element, and excites a coil of the solenoid when the actuator 44 is a solenoid.
- the sensor movement control unit 41 that translates the infrared sensor 12 since the sensor movement control unit 41 that translates the infrared sensor 12 is provided, the field of view of the infrared sensor 12 with respect to infrared light can be changed.
- the visual field of the infrared sensor 12 can be changed regardless of whether the infrared sensor 12 moves in any of vertical, horizontal, and diagonal directions. Therefore, the moving direction of the infrared sensor 12 is not limited to the moving direction shown in FIGS.
- the sensor visual field control unit 13 is configured by combining the refractor 21 and the refractor angle control unit 22 according to the first embodiment and the sensor movement control unit 41 according to the third embodiment.
- the drawings of this embodiment are omitted.
- the angle of the refractor 21 provided in the previous stage of the infrared sensor 12 with respect to the infrared light is changed, and the infrared sensor 12 itself is also translated.
- the angular direction of the refractor 21 with respect to the infrared light and the moving direction of the infrared sensor 12 are each changed to only one direction. Even so, the field of view of the infrared sensor 12 can be changed to various positions in accordance with the combination.
Abstract
Description
"An algebraic restoration method for estimating fixed-pattern noise in infrared imagery from a video sequence", Unal Sakoglu, Russell C. Hardie, Majeed M. Hayat, Bradley M. Ratliff and J. Scott Tyo, Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM, USA 87131-0001, Department of Electrical and Computer Engineering, University of Dayton, Dayton, OH,USA 45469-0226 "Generalized Algebraic Algorithm for Scene-based Nonuniformity Correction", Majeed M. Hayat, Bradley M. Ratliff, J. Scott Tyo and Kamil Agi, University of New Mexico, Department of Electrical and Computer Engineering, Albuquerque, NM, USA 87131, K & A Wireless LLC, 2617 Juan Tabo, NE., Suite A, Albuquerque, NM, USA 87112
赤外光を集光する赤外線レンズと、該集光された赤外光を検知する赤外線センサと、前記赤外線センサの出力信号から、画素ごとの固定パターンノイズを除去して画像信号を得る画像信号出力部と、を有してなる赤外線撮像装置であって、
前記赤外線センサに入射される赤外光に対する該赤外線センサの視野を変化させるセンサ視野制御部と、
前記赤外線センサの視野を変化させた時の該赤外線センサの出力信号の輝度を基に、画素ごとの固定パターンノイズを求める全体制御部と、を有する。
赤外線レンズにて集光された赤外光を検知する赤外線センサの出力信号から、画素ごとの固定パターンノイズを除去して画像信号を得る赤外線撮像装置による固定パターンノイズ補正方法であって、
前記赤外線センサに入射される赤外光に対する該赤外線センサの視野を変化させるステップと、
前記赤外線センサの視野を変化させた時の該赤外線センサの出力信号の輝度を基に、画素ごとの固定パターンノイズを求めるステップと、を有する。
図2は、本発明の実施例1に係るセンサ視野制御部13の構成を示す図である。
図5は、本発明の実施例2に係るセンサ視野制御部13の構成を示す図である。
図7は、本発明の実施例3に係るセンサ視野制御部13の構成を示す図である。
本実施例においては、センサ視野制御部13として、実施例1に係る屈折器21および屈折器角度制御部22と、実施例3に係るセンサ移動制御部41と、を組み合わせた構成とする。なお、本実施例の図面は省略する。
Claims (20)
- 赤外光を集光する赤外線レンズと、該集光された赤外光を検知する赤外線センサと、前記赤外線センサの出力信号から、画素ごとの固定パターンノイズを除去して画像信号を得る画像信号出力部と、を有してなる赤外線撮像装置であって、
前記赤外線センサに入射される赤外光に対する該赤外線センサの視野を変化させるセンサ視野制御部と、
前記赤外線センサの視野を変化させた時の該赤外線センサの出力信号の輝度を基に、画素ごとの固定パターンノイズを求める全体制御部と、を有する赤外線撮像装置。 - 前記センサ視野制御部は、
前記赤外線レンズと前記赤外線センサとの間に配置され、前記赤外線レンズにて集光された赤外光を屈折させる屈折器と、
前記屈折器の前記赤外光に対する角度を変化させる屈折器角度制御部と、を有する、請求項1に記載の赤外線撮像装置。 - 前記屈折器角度制御部は、
前記屈折器の一部に連結されたシャフトと、
コイルおよび前記シャフトと一体的に動作するプランジャからなり、該コイルの励磁により該プランジャが移動することで、前記屈折器と前記シャフトとの連結部分を移動させて該屈折器の前記赤外光に対する角度を変化させるソレノイドと、を有する、請求項2に記載の赤外線撮像装置。 - 前記屈折器角度制御部は、
前記屈折器の一部に連結され、移動方向に沿って歯形が形成されたシャフトと、
前記シャフトの歯形と噛み合うように回転することで、前記屈折器と前記シャフトとの連結部分を移動させて該屈折器の前記赤外光に対する角度を変化させる歯車と、を有する、請求項2に記載の赤外線撮像装置。 - 前記センサ視野制御部は、
前記赤外線レンズを偏心移動させるレンズ偏心移動制御部を有する、請求項1に記載の赤外線撮像装置。 - 前記レンズ偏心移動制御部は、
自己の中心に対して前記赤外線レンズの中心が偏心するように該赤外線レンズを保持し、外周に歯形が形成されたレンズ保持部材と、
前記レンズ保持部材の外周の歯形と噛み合うように回転することで、前記レンズ保持部材を回転させて該レンズ保持部材に保持された前記赤外線レンズを偏心移動させる歯車と、を有する、請求項5に記載の赤外線撮像装置。 - 前記センサ視野制御部は、
前記赤外線センサを平行移動させるセンサ移動制御部を有する、請求項1に記載の赤外線撮像装置。 - 前記センサ移動制御部は、
前記赤外線センサの、前記赤外線レンズとの対向面の裏面に取り付けられたガイド溝と、
前記赤外線センサの前記裏面側に配置され、前記ガイド溝に係合するガイドレールと、
前記赤外線センサを前記ガイドレールに沿って平行移動させるアクチュエータと、を有する、請求項7に記載の赤外線撮像装置。 - 前記アクチュエータは、電圧の印加により伸縮することで、前記赤外線センサを前記ガイドレールに沿って平行移動させる圧電素子である、請求項8に記載の赤外線撮像装置。
- 前記アクチュエータは、コイルおよび前記赤外線センサと一体的に動作するプランジャからなり、該コイルの励磁により該プランジャが移動することで、前記赤外線センサを前記ガイドレールに沿って平行移動させるソレノイドである、請求項8に記載の赤外線撮像装置。
- 前記センサ視野制御部は、
前記赤外線レンズと前記赤外線センサとの間に配置され、前記赤外線レンズにて集光された赤外光を屈折させる屈折器と、
前記屈折器の前記赤外光に対する角度を変化させる屈折器角度制御部と、
前記赤外線センサを平行移動させるセンサ移動制御部と、を有する、請求項1に記載の赤外線撮像装置。 - 前記屈折器角度制御部は、
前記屈折器の一部に連結されたシャフトと、
コイルおよび前記シャフトと一体的に動作するプランジャからなり、該コイルの励磁により該プランジャが移動することで、前記屈折器と前記シャフトとの連結部分を移動させて該屈折器の前記赤外光に対する角度を変化させるソレノイドと、を有する、請求項11に記載の赤外線撮像装置。 - 前記屈折器角度制御部は、
前記屈折器の一部に連結され、移動方向に沿って歯形が形成されたシャフトと、
前記シャフトの歯形と噛み合うように回転することで、前記屈折器と前記シャフトとの連結部分を移動させて該屈折器の前記赤外光に対する角度を変化させる歯車と、を有する、請求項11に記載の赤外線撮像装置。 - 前記センサ移動制御部は、
前記赤外線センサの、前記赤外線レンズとの対向面の裏面に取り付けられたガイド溝と、
前記赤外線センサの前記裏面側に配置され、前記ガイド溝に係合するガイドレールと、
前記赤外線センサを前記ガイドレールに沿って平行移動させるアクチュエータと、を有する、請求項11に記載の赤外線撮像装置。 - 前記アクチュエータは、電圧の印加により伸縮することで、前記赤外線センサを前記ガイドレールに沿って平行移動させる圧電素子である、請求項14に記載の赤外線撮像装置。
- 前記アクチュエータは、コイルおよび前記赤外線センサと一体的に動作するプランジャからなり、該コイルの励磁により該プランジャが移動することで、前記赤外線センサを前記ガイドレールに沿って平行移動させるソレノイドである、請求項14に記載の赤外線撮像装置。
- 赤外線レンズにて集光された赤外光を検知する赤外線センサの出力信号から、画素ごとの固定パターンノイズを除去して画像信号を得る赤外線撮像装置による固定パターンノイズ補正方法であって、
前記赤外線センサに入射される赤外光に対する該赤外線センサの視野を変化させるステップと、
前記赤外線センサの視野を変化させた時の該赤外線センサの出力信号の輝度を基に、画素ごとの固定パターンノイズを求めるステップと、を有する固定パターンノイズ補正方法。 - 前記赤外線センサの視野を変化させるステップでは、
前記赤外線レンズと前記赤外線センサとの間に配置した、前記赤外光を屈折させる屈折器の前記赤外光に対する角度を変化させる、請求項17に記載の固定パターンノイズ補正方法。 - 前記赤外線センサの視野を変化させるステップでは、
前記赤外線レンズを偏心移動させる、請求項17に記載の固定パターンノイズ補正方法。 - 前記赤外線センサの視野を変化させるステップでは、
前記赤外線センサを平行移動させる、請求項17に記載の固定パターンノイズ補正方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09715078.3A EP2257047A4 (en) | 2008-02-29 | 2009-02-06 | INFRARED IMAGING APPARATUS AND OWN NOISE CORRECTION |
KR1020107021602A KR101161518B1 (ko) | 2008-02-29 | 2009-02-06 | 적외선 촬상 장치 및 고정 패턴 노이즈 보정 방법 |
US12/919,452 US20110001830A1 (en) | 2008-02-29 | 2009-02-06 | Infrared imaging device and fixed pattern noise correction method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008-049757 | 2008-02-29 | ||
JP2008049757A JP4900283B2 (ja) | 2008-02-29 | 2008-02-29 | 赤外線撮像装置および固定パターンノイズ補正方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009107471A1 true WO2009107471A1 (ja) | 2009-09-03 |
Family
ID=41015874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/052057 WO2009107471A1 (ja) | 2008-02-29 | 2009-02-06 | 赤外線撮像装置および固定パターンノイズ補正方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20110001830A1 (ja) |
EP (3) | EP3197149A1 (ja) |
JP (1) | JP4900283B2 (ja) |
KR (1) | KR101161518B1 (ja) |
WO (1) | WO2009107471A1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6036998B2 (ja) * | 2013-04-23 | 2016-11-30 | 日本電気株式会社 | 撮像装置、画像補正方法及び、画像補正プログラム |
CN103647931A (zh) * | 2013-11-14 | 2014-03-19 | 无锡港湾网络科技有限公司 | 基于红外光栅的养殖场监视方法 |
CN103955686A (zh) * | 2014-05-15 | 2014-07-30 | 浙江师大计海新技术有限公司 | 一种掌纹采集仪 |
CN106716990B (zh) * | 2014-09-30 | 2019-12-20 | 富士胶片株式会社 | 红外线摄像装置及固定图案噪声计算方法 |
CN106716991B (zh) * | 2014-09-30 | 2019-07-23 | 富士胶片株式会社 | 红外线摄像装置、图像处理方法及记录介质 |
CN104754250B (zh) * | 2015-03-26 | 2018-04-06 | 上海市刑事科学技术研究院 | 基于声光可调谐滤光器的红外线成像取证系统及其校正像面漂移的方法 |
DE102015114009A1 (de) * | 2015-08-24 | 2017-03-02 | Rheinmetall Defence Electronics Gmbh | Verfahren und Vorrichtung zur Verarbeitung von Störpixeln auf einer Detektorfläche eines Bilddetektors |
WO2017073348A1 (ja) * | 2015-10-27 | 2017-05-04 | 富士フイルム株式会社 | 赤外線撮像装置及びその制御方法、並びに車両 |
JP6702058B2 (ja) * | 2016-07-27 | 2020-05-27 | 富士通株式会社 | 撮像装置 |
CN114459430B (zh) * | 2022-04-14 | 2022-07-12 | 厚普清洁能源股份有限公司 | 一种储罐沉降倾斜监测方法及系统 |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02222274A (ja) * | 1989-02-22 | 1990-09-05 | Fujitsu Ltd | 赤外線撮像装置の検知素子オフセット補正装置 |
JPH03266576A (ja) * | 1990-03-16 | 1991-11-27 | Fujitsu Ltd | 固体撮像装置 |
JPH03120178U (ja) * | 1990-03-22 | 1991-12-10 | ||
JPH05227485A (ja) * | 1992-02-15 | 1993-09-03 | Mitsubishi Electric Corp | 赤外線撮像装置 |
JPH0666631A (ja) * | 1992-08-18 | 1994-03-11 | Mitsubishi Electric Corp | 赤外線撮像装置 |
JPH06253217A (ja) * | 1993-02-27 | 1994-09-09 | Nec Corp | 撮像装置 |
JPH07193753A (ja) * | 1993-12-24 | 1995-07-28 | Nec Corp | 固定パターンノイズ補償方法及びそれを用いた赤外線撮像装置 |
JPH07318422A (ja) * | 1994-05-30 | 1995-12-08 | Fujitsu Ltd | 赤外線検知器 |
JPH1175104A (ja) * | 1997-09-01 | 1999-03-16 | Fujitsu Ltd | 赤外線検知素子補正装置 |
JP2000050162A (ja) * | 1998-07-29 | 2000-02-18 | Nec Corp | 撮像方法およびその装置 |
JP2007501551A (ja) * | 2003-08-06 | 2007-01-25 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 画像記録システム |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57101470A (en) * | 1980-12-16 | 1982-06-24 | Fujitsu Ltd | Image pickup control system |
JPH02190083A (ja) * | 1989-01-19 | 1990-07-26 | Fujitsu Ltd | 赤外線撮像装置のオフセット値測定、及びオフセット補正方法 |
JPH0481178A (ja) * | 1990-07-24 | 1992-03-13 | Fujitsu Ltd | Irccd検知器の直流オフセット補正方法 |
US5220159A (en) * | 1991-09-23 | 1993-06-15 | Hughes Aircraft Company | Refraction correction for axisymmetric viewing window |
US5189464A (en) * | 1991-12-18 | 1993-02-23 | Polaroid Corporation | Supplemental lens positioning system for a fixed focus lens camera |
US5335091A (en) * | 1991-12-31 | 1994-08-02 | Eastman Kodak Company | Apparatus for mechanically dithering a CCD array |
US5323334A (en) * | 1992-12-04 | 1994-06-21 | Hughes Aircraft Company | Sensor system having nonuniformity suppression with image preservation |
JPH06350931A (ja) * | 1993-06-02 | 1994-12-22 | Hamamatsu Photonics Kk | 固体撮像装置 |
US5400161A (en) * | 1993-10-04 | 1995-03-21 | Raytheon Company | Optical system including focus-defocus focal plane array compensation technique using liquid crystal phased array |
US5514865A (en) * | 1994-06-10 | 1996-05-07 | Westinghouse Electric Corp. | Dither image scanner with compensation for individual detector response and gain correction |
US5925875A (en) * | 1996-04-26 | 1999-07-20 | Lockheed Martin Ir Imaging Systems | Apparatus and method for compensating for fixed pattern noise in planar arrays |
US5789622A (en) * | 1996-09-12 | 1998-08-04 | Trw Inc. | Focal plane array calibration method |
US6075235A (en) * | 1997-01-02 | 2000-06-13 | Chun; Cornell Seu Lun | High-resolution polarization-sensitive imaging sensors |
JPH10288803A (ja) * | 1997-04-15 | 1998-10-27 | Casio Comput Co Ltd | 撮像装置および撮像方法 |
US6184527B1 (en) * | 1997-08-26 | 2001-02-06 | Raytheon Company | Dither correction for infrared detector arrays |
US6330371B1 (en) * | 1998-10-19 | 2001-12-11 | Raytheon Company | Adaptive non-uniformity compensation using feedforward shunting and min-mean filter |
NL1013296C2 (nl) * | 1999-10-14 | 2001-04-18 | Hollandse Signaalapparaten Bv | Detectieinrichting voorzien van offsetcompensatie. |
US7016550B2 (en) * | 2002-04-19 | 2006-03-21 | Lockheed Martin Corporation | Scene-based non-uniformity offset correction for staring arrays |
JP4366197B2 (ja) * | 2004-01-21 | 2009-11-18 | Hoya株式会社 | ステージ装置及びこのステージ装置を利用したカメラの手振れ補正装置 |
JP4760089B2 (ja) * | 2004-10-14 | 2011-08-31 | 日産自動車株式会社 | 車載画像処理装置、および画像処理方法 |
KR100678268B1 (ko) * | 2004-10-20 | 2007-02-02 | 삼성전자주식회사 | 카메라 렌즈 어셈블리의 손떨림 보정 장치 |
GB2428926B (en) * | 2005-08-03 | 2010-12-15 | Thales Holdings Uk Plc | Apparatus and method for imaging |
US7443554B1 (en) * | 2006-05-16 | 2008-10-28 | Lockheed Martin Corporation | Tilted plate dither scanner |
-
2008
- 2008-02-29 JP JP2008049757A patent/JP4900283B2/ja not_active Expired - Fee Related
-
2009
- 2009-02-06 EP EP17160757.5A patent/EP3197149A1/en not_active Withdrawn
- 2009-02-06 WO PCT/JP2009/052057 patent/WO2009107471A1/ja active Application Filing
- 2009-02-06 EP EP09715078.3A patent/EP2257047A4/en not_active Withdrawn
- 2009-02-06 KR KR1020107021602A patent/KR101161518B1/ko active IP Right Grant
- 2009-02-06 US US12/919,452 patent/US20110001830A1/en not_active Abandoned
- 2009-02-06 EP EP16166878.5A patent/EP3068131A1/en not_active Withdrawn
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02222274A (ja) * | 1989-02-22 | 1990-09-05 | Fujitsu Ltd | 赤外線撮像装置の検知素子オフセット補正装置 |
JPH03266576A (ja) * | 1990-03-16 | 1991-11-27 | Fujitsu Ltd | 固体撮像装置 |
JPH03120178U (ja) * | 1990-03-22 | 1991-12-10 | ||
JPH05227485A (ja) * | 1992-02-15 | 1993-09-03 | Mitsubishi Electric Corp | 赤外線撮像装置 |
JPH0666631A (ja) * | 1992-08-18 | 1994-03-11 | Mitsubishi Electric Corp | 赤外線撮像装置 |
JPH06253217A (ja) * | 1993-02-27 | 1994-09-09 | Nec Corp | 撮像装置 |
JPH07193753A (ja) * | 1993-12-24 | 1995-07-28 | Nec Corp | 固定パターンノイズ補償方法及びそれを用いた赤外線撮像装置 |
JPH07318422A (ja) * | 1994-05-30 | 1995-12-08 | Fujitsu Ltd | 赤外線検知器 |
JPH1175104A (ja) * | 1997-09-01 | 1999-03-16 | Fujitsu Ltd | 赤外線検知素子補正装置 |
JP2000050162A (ja) * | 1998-07-29 | 2000-02-18 | Nec Corp | 撮像方法およびその装置 |
JP2007501551A (ja) * | 2003-08-06 | 2007-01-25 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 画像記録システム |
Non-Patent Citations (3)
Title |
---|
MAJEED M. HAYAT; BRADLEY M. RATLIFF; J. SCOTT TYO; KAMIL AGI, GENERALIZED ALGEBRAIC ALGORITHM FOR SCENE-BASED NONUNIFORMITY CORRECTION, pages 87112 |
See also references of EP2257047A4 |
UNAL SAKOGLU; RUSSELL C. HARDIE; MAJEED M. HAYAT; BRADLEY M. RATLIFF; J. SCOTT TYO, AN ALGEBRAIC RESTORATION METHOD FOR ESTIMATING FIXED-PATTERN NOISE IN INFRARED IMAGERY FROM A VIDEO SEQUENCE, pages 45469 - 0226 |
Also Published As
Publication number | Publication date |
---|---|
EP2257047A1 (en) | 2010-12-01 |
KR20100126771A (ko) | 2010-12-02 |
EP3068131A1 (en) | 2016-09-14 |
US20110001830A1 (en) | 2011-01-06 |
JP4900283B2 (ja) | 2012-03-21 |
EP3197149A1 (en) | 2017-07-26 |
KR101161518B1 (ko) | 2012-06-29 |
EP2257047A4 (en) | 2015-12-30 |
JP2009207072A (ja) | 2009-09-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2009107471A1 (ja) | 赤外線撮像装置および固定パターンノイズ補正方法 | |
TWI495335B (zh) | 取像模組及其運作方法 | |
JP4547621B2 (ja) | レンズ駆動機構、レンズユニット及び撮像装置 | |
JP5024520B2 (ja) | 手振れ補正装置及びレンズユニット並びに撮像装置 | |
JP5914716B1 (ja) | 撮像装置 | |
JP6476065B2 (ja) | 撮像装置及び撮像装置の制御方法 | |
JP6936034B2 (ja) | カメラ装置及び揺れ補正方法 | |
JP4600754B2 (ja) | 撮像装置 | |
JP6940290B2 (ja) | カメラ装置及び揺れ補正方法 | |
JP2006301098A (ja) | 光学装置、レンズユニット及び撮像装置 | |
JP2004354878A (ja) | 撮像装置 | |
JP5779910B2 (ja) | 赤外線カメラ及び焦点位置補正方法 | |
JP2008003130A (ja) | 像振れ補正装置および撮影機器 | |
JP2009089138A (ja) | 赤外線カメラ | |
JP2007047502A (ja) | 光学系駆動装置および圧電素子の駆動方法 | |
US8587866B2 (en) | Optical apparatus | |
JP2008158028A (ja) | 電子スチルカメラ | |
JP2010081243A (ja) | 手振れ補正装置、撮像装置 | |
JP2019062370A (ja) | 撮像装置及びその制御方法 | |
JP6039197B2 (ja) | 撮像装置およびその制御方法 | |
JP2015230320A (ja) | レンズ装置および光学機器 | |
WO2015182021A1 (ja) | 撮像制御装置、撮像装置および撮像制御方法 | |
JP2011146772A (ja) | 撮像装置及び携帯電子機器 | |
JP2009300784A (ja) | 手ブレ補正装置および手ブレ補正方法ならびに撮影装置 | |
JP6504825B2 (ja) | 撮像装置及びその制御方法、プログラム、記憶媒体 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09715078 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12919452 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REEP | Request for entry into the european phase |
Ref document number: 2009715078 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2009715078 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 20107021602 Country of ref document: KR Kind code of ref document: A |