WO2010137513A1 - Dispositif électronique - Google Patents

Dispositif électronique Download PDF

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Publication number
WO2010137513A1
WO2010137513A1 PCT/JP2010/058521 JP2010058521W WO2010137513A1 WO 2010137513 A1 WO2010137513 A1 WO 2010137513A1 JP 2010058521 W JP2010058521 W JP 2010058521W WO 2010137513 A1 WO2010137513 A1 WO 2010137513A1
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WO
WIPO (PCT)
Prior art keywords
image
unit
image processing
imaging
monitor
Prior art date
Application number
PCT/JP2010/058521
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English (en)
Japanese (ja)
Inventor
史生 長井
洋 波多野
毅 遠藤
哲也 野田
義朗 平原
Original Assignee
コニカミノルタオプト株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by コニカミノルタオプト株式会社 filed Critical コニカミノルタオプト株式会社
Publication of WO2010137513A1 publication Critical patent/WO2010137513A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/2628—Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
    • H04N1/195—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a two-dimensional array or a combination of two-dimensional arrays
    • H04N1/19594—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a two-dimensional array or a combination of two-dimensional arrays using a television camera or a still video camera
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
    • H04N1/195—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a two-dimensional array or a combination of two-dimensional arrays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/0402—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
    • H04N2201/0436—Scanning a picture-bearing surface lying face up on a support

Definitions

  • the present invention relates to an electronic apparatus using a solid-state imaging device such as a CCD (Charge Coupled Devices) type image sensor or a CMOS (Complementary Metal-Oxide Semiconductor) type image sensor.
  • a solid-state imaging device such as a CCD (Charge Coupled Devices) type image sensor or a CMOS (Complementary Metal-Oxide Semiconductor) type image sensor.
  • a scanner as an apparatus conventionally used for digitizing a document.
  • the scanner captures an image plane that faces the imaging optical system, and a large-sized scanner device equipped with a line sensor is often used particularly when a document containing characters is digitized on a desktop.
  • a digital camera may be used instead of a scanner, but in this case, since it is necessary to shoot with the image plane and the digital camera facing each other at a certain distance, There is a problem that it has to be placed on the floor or the like to take an image and is not easy to use.
  • some commercially available personal computers have built-in web cameras for the purpose of video conferencing.
  • This web camera is generally integrated into a display monitor unit or a personal computer main body, and is often used to transmit an image of a user who operates the personal computer to a destination.
  • a web camera can be used to capture an image of a document, it is desirable to capture an image while the document is placed on a desk in consideration of the user's trouble.
  • the imaging axis of the web camera attached to the display monitor unit or the PC main body is inclined with respect to the normal of the document, which causes the image to be trapezoidally distorted, so that state Even if the image is transmitted as it is, there is a problem that it is difficult to see the other party of the transmission destination.
  • Patent Document 1 discloses an imaging system that corrects this trapezoidal distortion in view of the fact that when a sheet of paper is imaged using a camera, the square of the sheet is distorted into a trapezoid. ing.
  • the present invention has been made in view of such a problem, and provides an electronic device that can quickly correct and display an image of a subject without performing complicated image processing, thereby improving user convenience. For the purpose.
  • the electronic device is: A main body installed on the ground surface that is the same as or close to the surface on which the subject is placed; A camera unit having an imaging element and an imaging optical system that forms an optical image on a light receiving surface of the imaging element; Image processing means for performing image processing on an image signal output from the camera unit; A support part which is arranged so as to be swingable with respect to the main body and to which the camera part is attached; Detecting means for detecting a parameter corresponding to a relative positional relationship between the main body and the camera unit; The image processing unit performs keystone correction on an image signal output from the camera unit that captured the subject according to a parameter detected by the detection unit.
  • the image processing unit performs trapezoidal correction on the image signal output from the camera unit that captured the subject according to the parameter detected by the detection unit. Even if complex image processing is not performed, the keystone correction can be performed only by simple calculation and image deformation, and high-precision correction can be performed quickly.
  • the “ground plane close to the surface on which the subject is placed” means, for example, that the surface on which the electronic device is installed and the surface on which the subject is placed are within 1 cm (preferably 5 mm) in the height direction. Including close proximity.
  • the camera unit is fixedly arranged with respect to the support unit, and the detection unit includes the main body and the support unit as the parameters.
  • the image processing means detects at least the distance along the support portion from the surface on which the main body is installed to the image sensor of the camera portion, and the first detected by the detection means.
  • keystone correction is performed on the image signal output from the camera unit.
  • the image processing means includes at least a distance along the support unit from the surface on which the main body is installed to the image sensor of the camera unit.
  • the keystone correction can be performed on the image signal output from the camera unit in accordance with the first tilt angle detected by the detection means.
  • the electronic device when the image processing means determines that the first tilt angle is equal to or greater than a first predetermined angle, the electronic device outputs from the camera unit.
  • the image processing is performed so that the image displayed on the monitor unit is reversed left and right without performing trapezoidal correction on the image signal.
  • the first tilt angle is compared with a first predetermined angle, for example, a conference for imaging the user himself using the camera unit, for example. It is possible to automatically select a mode and a document imaging mode for imaging a document as a subject.
  • the image processing means performs image processing so that the image displayed on the monitor unit is reversed left and right without performing trapezoidal correction, thereby improving user convenience. Can be increased.
  • the technique disclosed in Japanese Patent Laid-Open No. 11-4370 can be used.
  • the first predetermined angle is 90 degrees. If the tilt angle of the support portion with respect to the main body is 90 degrees or more, it is difficult to image the mounted subject on the mounting surface that is the same as or close to the surface on which the main body is installed. This is because it is estimated that the user himself is imaged.
  • the camera unit is disposed so as to be swingable with respect to the support unit, and the detection unit is configured to use the main body as the parameter.
  • a first tilt angle between the support unit and the second tilt angle between the support unit and the optical axis of the imaging optical system of the camera unit, and the image processing means is a surface on which the main body is installed.
  • the image processing means includes a distance along the support unit from the surface on which the main body is installed to the image sensor of the camera unit, and The keystone correction can be performed on the image signal output from the camera unit in accordance with the first tilt angle and the second tilt angle detected by the detecting means.
  • the image processing means when the first inclination angle is ⁇ and the second inclination angle is ⁇ , the image processing means is ( ⁇ + ⁇ ) When it is determined that the angle is equal to or larger than a predetermined angle of 2, the image signal output from the camera unit is not subjected to trapezoidal correction, and image processing is performed so that the image displayed on the monitor unit is horizontally reversed. It is characterized by.
  • a conference mode for imaging the user himself using the camera unit and a document imaging mode for imaging a document as a subject can be automatically selected.
  • the image processing means performs image processing so that the image displayed on the monitor unit is reversed left and right without performing keystone correction, thereby improving user convenience. be able to.
  • the second predetermined angle is 180 degrees. If ( ⁇ + ⁇ ) is 180 degrees or more, it is difficult to image the mounted subject on the mounting surface that is the same as or close to the surface on which the main body is installed. Because it is done.
  • the electronic device is the monitor unit according to any one of claims 1 to 7, wherein the support unit displays an image based on an image signal image-processed by the image processing unit. It is characterized by having. Accordingly, the support portion can be swung while looking at the displayed image and searching for a position suitable for imaging the subject.
  • the electronic device according to claim 9 is characterized in that, in the invention according to claim 8, the monitor section faces an imaging direction. This is convenient because the user operating in front of the electronic device can adjust the inclination of the support portion while viewing the image on the monitor.
  • the monitor unit displays a guideline indicating a position of the subject for which the keystone correction can be performed. This is convenient because the user operating in front of the electronic device can adjust the position of the subject, the inclination of the support portion, and the like while aligning the guideline in the monitor with the image.
  • the image processing means includes a trapezoid only for an image of a subject placed at a predetermined position on the imaging screen. Correction is performed. As a result, the amount of memory required for image processing can be kept small, and image processing can be performed quickly.
  • the present invention it is possible to provide an electronic device that can quickly correct and display an image of a subject without performing complicated image processing, thereby improving user convenience.
  • FIG. 1 It is a perspective view of notebook type personal computer PC carrying imaging device CA concerning this embodiment.
  • FIG. 1 It is a block diagram of notebook type personal computer PC which mounts imaging device CA concerning this embodiment. It is a figure which expands and shows imaging device CA vicinity.
  • (A) is the figure seen from the side in the state which has arrange
  • (b) is a figure which shows the image imaged by imaging device CA in this state.
  • (A) is the figure seen from the side in the state which has arrange
  • (b) is a figure which shows the image imaged by imaging device CA in this state. .
  • FIG. 4 is a diagram illustrating an image obtained by cutting out only a document. It is a figure which shows the state which mounted document DCM on the desk surface on the opposite side to the monitor part PCD with respect to main body PCB.
  • FIG. 1 is a perspective view of a notebook personal computer (electronic device) PC equipped with an imaging device CA according to the present embodiment.
  • FIG. 2 is a block diagram of a notebook personal computer PC equipped with an imaging device (camera unit) CA according to the present embodiment.
  • FIG. 3 is an enlarged view showing the vicinity of the imaging apparatus CA.
  • the notebook personal computer PC can be folded by connecting the main body PCB and the monitor part PCD with a hinge PCH, and the imaging device CA is an upper part of the monitor 112 in the monitor part PCD as a support part. Arranged in the center, that is, the monitor 112 is on the front side of the imaging device CA.
  • the image pickup apparatus CA is incorporated in the notebook personal computer PC, and the monitor 112 is used as a display means, so that the image captured by the monitor 112 can be confirmed and image processing can be performed at high speed using an image processing circuit on the personal computer side. Can be sent, pasted on other materials, extraction of characters and pictures, and reuse.
  • the display unit PCD whose tilt angle with respect to the main body PCB can be adjusted by the hinge PCH can be used as a support unit of the imaging apparatus CA, there is also an advantage that the angle of view at the time of imaging the document DCM placed on the desk can be secured.
  • the imaging device CA is disposed in a notch CT at the upper center of the monitor 112, and is supported to be swingable with respect to the monitor unit 112 via a swing shaft PS.
  • a second sensor 115 is attached to the swing axis PS that swings together with the imaging device CA, and the tilt angle (second tilt angle) of the imaging axis of the imaging device CA (the optical axis of the imaging optical system) with respect to the monitor unit 112. ) ⁇ can be detected.
  • the imaging apparatus CA can swing at least 180 degrees or more.
  • the hinge PCH incorporates a first sensor 114 that detects a relative inclination angle (first inclination angle) ⁇ between the monitor unit PCD and the main body PCB.
  • the imaging apparatus CA includes an imaging optical system 101, a solid-state imaging device 102, and an A / D conversion unit 103.
  • the notebook personal computer PC includes a control unit 104, an optical system driving unit 105, a timing generation unit 106, an image sensor driving unit 107, an image memory 108, an image processing unit 109, an image compression unit 110, The image recording unit 111, the monitor 112, the keyboard 113, and the first sensor 114 and the second sensor 115 serving as detection means are included.
  • a device used for a normal personal computer is provided. I will omit it.
  • the control unit 104 and the image processing unit 109 constitute an image processing unit.
  • the imaging optical system 101 has a function of forming a subject image on the imaging surface (light receiving surface) of the solid-state imaging device 102.
  • the solid-state image sensor 102 is an image sensor such as a CCD or CMOS, and photoelectrically converts incident light for each of R, G, and B and outputs an analog signal thereof.
  • the A / D conversion unit 103 converts an analog signal into digital image data.
  • the control unit 104 has a function of controlling the imaging device CA.
  • the control unit 104 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and various programs read from the ROM and expanded in the RAM, and various types in cooperation with the CPU. Execute the process.
  • CPU Central Processing Unit
  • RAM Random Access Memory
  • ROM Read Only Memory
  • the optical system driving unit 105 drives and controls the imaging optical system 101 during focusing, exposure, and the like under the control of the control unit 104.
  • the timing generator 106 outputs an analog signal output timing signal under the control of the controller 104.
  • the image sensor drive unit 107 causes the solid-state image sensor 102 to output an analog signal in synchronization with the timing signal output from the timing generator 106.
  • the image memory 108 stores image data so as to be readable and writable.
  • the image processing unit 109 performs various image processes on the image data.
  • the image compression unit 110 compresses captured image data by a compression method such as JPEG (Joint Photographic Experts Group).
  • the image recording unit 111 records image data on a recording medium such as a memory card set in a hard disk or a slot (not shown).
  • the monitor 112 is a color liquid crystal panel or the like, and can display image data after image processing after shooting, a through image before shooting, and the like.
  • the keyboard 113 includes an imaging mode setting command and various operation keys for inputting information, and outputs information input by the user to the control unit 104.
  • the first sensor 114 detects the inclination angle ⁇ of the monitor unit PCD with respect to the main body PCB as a parameter, and transmits it to the control unit 104.
  • the second sensor 115 detects the tilt angle ⁇ of the imaging axis of the imaging apparatus CA with respect to the monitor unit PCD as a parameter and transmits it to the control unit 104.
  • the operation in the imaging apparatus CA and the notebook personal computer PC will be described. If the edge of the image of the document DCM is not detected when performing the keystone correction, the image processing is simplified and the correction can be performed quickly. However, in order to perform trapezoidal correction without using edge detection, some device is required.
  • FIG. 4 (a) an image of a document DCM captured with the monitor unit PCD standing upright with respect to the main body PCB is shown in FIG. 4 (b). While the difference is relatively small, as shown in FIG. 5 (a), the image of the document DCM captured by placing the monitor unit PCD on the main body PCB is trapezoidal as shown in FIG. 5 (b). The difference between the upper side and the lower side is relatively large. That is, the amount of deformation of the image of the document DCM changes according to the relative positional relationship between the main body PCB and the imaging device CA.
  • FIG. 6 is a side view of the notebook personal computer PC and the document DCM.
  • FIG. 7 is a diagram illustrating an image before correction (dotted line) and an image after correction (solid line).
  • the control unit 104 stores in advance the length H of the monitor unit PCD (the distance along the monitor unit PCD from the desk surface on which the main body PCD is installed to the center of the imaging device of the imaging device CA).
  • control unit 104 obtains the inclination angle ⁇ of the monitor unit PCD with respect to the main body PCB from the signal of the first sensor 114, and the inclination angle ⁇ of the imaging axis of the imaging device CA with respect to the monitor unit PCD based on the signal of the second sensor 115. Can be obtained and output as parameters.
  • the control unit 104 substitutes the stored value H and the obtained parameters ⁇ and ⁇ into the following formula to obtain a conversion formula for trapezoidal correction.
  • the image processing unit 109 based on the obtained conversion formula, the points a i before correction of the image shown by the dotted line ', c ij' of each point of the image after correction shown by the solid line a i, the c ij Transform and transform the image to perform keystone correction.
  • the monitor 112 displays each point of the image after the keystone correction. Note that the image of the document DCM may be flipped up and down and left and right before or after the keystone correction.
  • the imaging device CA can be fixedly arranged with respect to the monitor unit PCD.
  • the control unit 104 since the inclination angle ⁇ of the imaging axis of the imaging apparatus CA with respect to the monitor unit PCD is a fixed value (usually 90 degrees), the control unit 104 stores the inclination angle ⁇ so that the first inclination angle ⁇ is stored. By obtaining only as a parameter, a conversion formula for keystone correction can be obtained.
  • the imaging apparatus CA is configured to be movable relative to the monitor unit PCD, the above-described value H is not a fixed value. In such a case, the value H may be detected using a linear encoder or the like as a parameter and substituted into the conversion formula.
  • the position of the face of the user US as the subject is the state of the imaging apparatus CA with the notebook personal computer PC placed on the desk. It is located above the horizontal line HL (that is, in the vertical direction).
  • the document DCM is positioned below the horizontal line HL (that is, in the vertical direction) of the imaging device CA in a state where it is placed on the desk in the vicinity of the main body PCB of the notebook personal computer PC. . That is, it is possible to determine which subject the user is trying to capture from the inclination angle of the support portion PCD with respect to the main body PCB.
  • the control unit 104 determines the tilt angle (first tilt angle) of the monitor unit PCD with respect to the main body PCB from the output of the first sensor 114. ⁇ is obtained, and when the inclination angle ⁇ is 90 degrees or more, a conference mode for imaging the user is set, and when the inclination angle ⁇ is less than 90 degrees, the document imaging mode for imaging the document DCM is set. Can be set.
  • the control unit 104 determines the tilt angle (first tilt angle) of the monitor unit PCD with respect to the main body PCB from the output of the first sensor 114.
  • an inclination angle (second inclination angle) ⁇ of the imaging axis of the imaging device CA with respect to the monitor unit PCD is obtained from the output of the second sensor 115, and when ( ⁇ + ⁇ ) is 180 degrees or more, the user himself
  • the document capture mode for capturing the document DCM can be set.
  • the conference mode In the conference mode, subject monitoring (through image display) and image shooting execution are performed as necessary.
  • an image of a subject obtained through the imaging optical system 101 is formed on the light receiving surface of the solid-state imaging device 102.
  • the solid-state imaging device 102 disposed behind the imaging optical axis of the imaging optical system 101 is scanned and driven by the timing generation unit 106 and the imaging device driving unit 107.
  • the analog signal is output for one screen.
  • the analog signal is appropriately gain-adjusted for each primary color component of RGB, and then converted into digital data by the A / D conversion unit 103.
  • the digital data is reversed left and right by image processing by the image processing unit 109 and is subjected to color process processing including pixel interpolation processing and ⁇ correction processing to obtain a digital luminance signal Y and color difference signals Cb, Cr (images).
  • Data is generated and stored in the image memory 108, the signal is periodically read out, the video signal is generated, output to the monitor 112, and transmitted to the other party connected via the Internet.
  • the monitor 112 displays the image MG ⁇ b> 1 transmitted from the other party in a full screen, and the image MG ⁇ b> 2 of the user US itself is displayed small in the lower right of the monitor 112.
  • the image MG2 in a mirror image relationship is raised on the same side, so that the user US looks at the mirror and feels uncomfortable.
  • the image MG2 may be displayed on the full screen.
  • the monitor 112 functions as an electronic viewfinder in monitoring and displays captured images in real time. In this state, focusing, exposure, and the like of the imaging optical system 101 are set by the drive of the optical system driving unit 105 as needed by the image plane AF.
  • the user can acquire still image data by operating a predetermined key on the keyboard 113 at a timing when still image shooting is desired.
  • one frame of image data stored in the image memory 108 is read out and compressed by the image compression unit 110.
  • the compressed image data is recorded on a recording medium by the image recording unit 111.
  • the document imaging mode is set and the document DCM is imaged as a subject.
  • subject monitoring through image display
  • image shooting execution are performed as described above.
  • the user tilts the monitor unit PCD and the imaging device CA together while visually recognizing the image displayed on the monitor 112.
  • the guideline GL is determined by the above-described substitution values H, ⁇ , and ⁇ . By aligning the three sides of the document DCM here, the guideline GL is displayed as an appropriate image after the keystone correction.
  • the optical system driving unit 105 is set so that the upper position on the screen (the position farther away in the document DCM) than the optical axis center position (that is, the screen center) of the imaging optical system 101 in the document DCM is the focusing position. It is preferable to drive. Thereby, the depth of field can be used effectively. Focusing is preferably performed automatically by the image plane AF as described above, but a distance measuring device may be provided separately.
  • the user can acquire still image data (image data of the primary acquired image) by operating a predetermined key of the keyboard 113.
  • the control unit 104 can store the obtained conversion formula together with the image data of the primary acquired image G1 in a common file and store it in the image memory 108 which is a storage unit.
  • the image data may be subjected to predetermined compression.
  • Such a file is recorded on a recording medium by the image recording unit 111.
  • image correction is performed by the image processing unit 109
  • keystone correction image processing
  • image processing is performed on the image data of the primary acquired image G1 based on the conversion formula described above to form image data of the image G2 (See FIG. 9B).
  • the document DCM has a rectangular shape with an original aspect ratio.
  • the image processing unit 109 performs image processing so that the image data of the image G2 is trapezoidally corrected and inverted 180 degrees (vertically and horizontally reversed). As shown in (c), an upright image G3 is displayed. Therefore, both the user US and the transmission destination can easily understand the contents of the document DCM, and when the user US moves the document DCM to the right, the image G3 also moves to the right.
  • the characters written by the US in the document DCM can be read immediately.
  • the keystone correction may be performed after the image is flipped vertically and horizontally.
  • the image processing may be performed so as to cut out along the outline of the document DCM to form the image G3 including only the document DCM.
  • the image data of the primary acquired image G1 and the substitution values H, ⁇ , ⁇ , or a conversion formula obtained by substituting these values are transmitted from the notebook personal computer PC via the LAN or the Internet, and the transmission destination image forming apparatus is similar. Keystone correction may be performed.
  • the keystone correction can be performed even when the document DCM is placed on the desk surface opposite to the monitor unit PCD with respect to the main body PCB.
  • the inclination angle of the surface of the main body PCB extending from the back side of the monitor unit PCD and the monitor unit PCD is ⁇ ′
  • the inclination angle of the imaging axis of the imaging device CA with respect to the back surface of the monitor unit PCD is As ⁇ ′
  • the control unit 104 performs preprocessing on the output signals of the first sensor 114 and the second sensor 115. Whether or not to perform the preprocessing can be determined by a signal from an inversion sensor (not shown) that detects that the imaging apparatus CA is inverted (facing the back side of the monitor unit PCD).
  • the pre-processing may be performed manually by the user without using the reverse sensor.
  • the present invention has been described with reference to the embodiment. However, the present invention should not be construed as being limited to the above-described embodiment, and can be appropriately changed or improved.
  • the electronic device is not limited to a personal computer but can be applied to a mobile phone or the like.

Abstract

La présente invention se rapporte à un dispositif électronique qui corrige rapidement et affiche une image d'un objet sans avoir à exécuter un traitement d'image compliqué et qui améliore la convivialité d'utilisation pour un utilisateur. Un module de commande (104) entre des valeurs de substitution trouvées (H, α, β) dans une fonction prédéterminée et obtient une fonction de conversion utilisée pour la correction en trapèze. Un module de traitement d'image (109) traite les points d'une image sur la base de la fonction de conversion acquise, en convertissant les points de précorrection (ai', cij') de l'image représentée par la ligne en pointillés en des points de post-correction (ai, cij) de l'image représentée par la ligne pleine pour transformer l'image et exécuter une correction en trapèze. Grâce à cela, un traitement d'image peut être simplifié et un traitement peut être exécuté rapidement.
PCT/JP2010/058521 2009-05-26 2010-05-20 Dispositif électronique WO2010137513A1 (fr)

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JP2009-126303 2009-05-26

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WO2023049388A1 (fr) * 2021-09-24 2023-03-30 Apple Inc. Vidéoconférence à grand angle
US11770600B2 (en) 2021-09-24 2023-09-26 Apple Inc. Wide angle video conference
US11822761B2 (en) 2021-05-15 2023-11-21 Apple Inc. Shared-content session user interfaces
US11849255B2 (en) 2018-05-07 2023-12-19 Apple Inc. Multi-participant live communication user interface
US11895391B2 (en) 2018-09-28 2024-02-06 Apple Inc. Capturing and displaying images with multiple focal planes
US11893214B2 (en) 2021-05-15 2024-02-06 Apple Inc. Real-time communication user interface
US11907605B2 (en) 2021-05-15 2024-02-20 Apple Inc. Shared-content session user interfaces

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