WO2012013914A1 - Appareil photographique numérique portable à la main comportant un télémètre - Google Patents

Appareil photographique numérique portable à la main comportant un télémètre Download PDF

Info

Publication number
WO2012013914A1
WO2012013914A1 PCT/GB2010/051249 GB2010051249W WO2012013914A1 WO 2012013914 A1 WO2012013914 A1 WO 2012013914A1 GB 2010051249 W GB2010051249 W GB 2010051249W WO 2012013914 A1 WO2012013914 A1 WO 2012013914A1
Authority
WO
WIPO (PCT)
Prior art keywords
digital camera
range finder
portable hand
distance
camera
Prior art date
Application number
PCT/GB2010/051249
Other languages
English (en)
Inventor
Adam Lomas
Original Assignee
Adam Lomas
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.)
Filing date
Publication date
Application filed by Adam Lomas filed Critical Adam Lomas
Priority to PCT/GB2010/051249 priority Critical patent/WO2012013914A1/fr
Publication of WO2012013914A1 publication Critical patent/WO2012013914A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/02—Details
    • G01C3/06—Use of electric means to obtain final indication
    • G01C3/08—Use of electric radiation detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
    • G01C11/02—Picture taking arrangements specially adapted for photogrammetry or photographic surveying, e.g. controlling overlapping of pictures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • G01C15/002—Active optical surveying means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/32—Measuring distances in line of sight; Optical rangefinders by focusing the object, e.g. on a ground glass screen
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/285—Systems for automatic generation of focusing signals including two or more different focus detection devices, e.g. both an active and a passive focus detecting device
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/18—Focusing aids
    • G03B13/20—Rangefinders coupled with focusing arrangements, e.g. adjustment of rangefinder automatically focusing camera
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only

Definitions

  • the present invention relates to a portable hand-holdable digital camera having a range finder for measuring dimensions of a photographed image.
  • JP2001004377 It is known from JP2001004377 to provide a theodolite with a range finder.
  • the theodolite can capture an image, and can utilise a range finder to determine a distance.
  • a theodolite cannot be transported and operated easily by an architect at multiple job sites, and the range finder may produce inaccurate results.
  • identification of edges and corners within a room or building is problematic, and determination of the length of selected edges cannot be undertaken.
  • the present invention seeks to provide a solution to these problems, and which is particularly beneficial for architects when on-site.
  • a portable hand-holdable digital camera comprising : a camera housing having a display, a power button, a shoot button, a flash unit, and a battery compartment; capture means for capturing an image of an object in two dimensional form and for outputting the captured two-dimensional image to the display; first range finder means including a zoomable lens unit supported by the housing for focusing on an object and calculation means for calculating a first distance of the object from the lens unit and thus a distance between points on the captured two-dimensional image viewed and selected on the display; and second range finder means including an emitted-beam range finder on the housing for separately calculating a second distance of the object from the emitted-beam range finder, and for outputting the second distance to the calculation means of the first range finder means for combination therewith to improve distance determination accuracy.
  • An advantage of the invention is that manual measuring can be avoided and much time and energy can be saved. Another advantage is that the accuracy of the measurement can be increased by not only eliminating human error associated with manual measuring, but also by eliminating or reducing errors associated with a particular automated measurement system.
  • a further advantage of the invention is that, since the camera is adapted for on-site use, and is designed to resist shock and be portable, there is less risk of damage to the camera due to transportation from place to place, dropping, banging, etc, compared with large and cumbersome sensitive measurement equipment.
  • Preferable and/or optional features of the invention are set forth in claims 2 to 17, inclusive.
  • Figure 1 shows a perspective rear or user's view of one embodiment of a portable hand-holdable digital camera, in accordance with the present invention
  • Figure 2 shows a perspective front or objective view of the camera shown in Figure 1 ;
  • FIG. 3 is a generalised circuit diagram of the camera.
  • a portable hand-holdable digital camera 10 which comprises a camera housing 12 having a power button 14 thereon, a zoomable lens unit 16 on a front or objective side 18 thereof, a flash unit 20 also on the objective side 18, a battery compartment 21 accessible preferably from a lower surface 22, and a display 24 on a rear or user side 26 of the housing 12.
  • a shoot button 28 for activating the unit once powered on, and a zoom button 30 for controlling a zoom of the lens unit 16 is also provided, in this case the user side 26 of the housing 12.
  • the lens unit 16 forms part of image capture means 34, which also includes an image capture circuit 36 within the housing 12 for outputting the captured image to the display 24 and/or to a fixed and/or removable data storage device.
  • image capture circuit 36 For example, at least one CCD 38 or CMOS array can be utilised as part of the image capture circuit 36.
  • the display 24 is preferably touch-screen, and edge detection means 42 is provided within the housing 12 for processing an edge identification based on at least one input from the user on the touch-screen.
  • the edge detection means 42 includes an image processing circuit 44 within the housing 12 and software for determining the edge of an image based on a user input to the touch-screen which identifies at least part of the edge on the displayed image.
  • the camera 10 also includes first and second range finder means 46, 48 from which an average of the respective distance measurements is taken to provide a more accurate overall distance measurement used when determining edge length.
  • the first range finder means 46 comprises the lens unit 16 and calculation means 50 in the form of a calculation circuit 52 for calculating a first distance of an object from the lens unit 16 and thus a distance between points on the captured two-dimensional image viewed and selected on the display 24.
  • the lens unit 16 is optically zoomable, and thus the calculation circuit 52 bases its calculation of the first distance on a focal length of the lens unit 16 electronically fed back from the lens unit 16 to the calculation circuit 52.
  • the second range finder means 48 includes an emitted-beam range finder unit 54 in the housing 12 for emitting a range finding beam.
  • the beam may be an infrared beam.
  • the emitted-beam range finder unit 54 includes a separate calculation means 56, typically being a processing circuit 58 having calculation software, for separately calculating a second distance of the object from the emitted-beam range finder unit 54 based on a signal returned by the range finding beam.
  • the calculated second distance determined by the emitted-beam range finder unit 54 is outputted to the calculation means 50 of the first range finder means 46 for combination therewith. An average is then taken to improve and/or optimise distance determination accuracy of the edge length or other points identified on the two-dimensional image on the display 24.
  • the dimensioned image displayed on the display 24 may be savable with the dimension data intact on or adjacent to the selected edge and/or corner of the image and/or as a separate data file to the data storage device.
  • This image showing the calculated improved or optimised dimensions, either identified via the edge detection means or manually if the edge detection means is dispensed with, can then be uploaded to a computer or other peripheral device for further analysis and/or printing, for example, on a larger scale.
  • the camera 10 also includes a mode button 60 wherein it can be used in a first mode as a regular camera, and in a separate mode wherein it is used to measure dimensions of a space.
  • the mode button 60 may be assigned to switch between camera and dimension mode, or the mode may be selected via menus or other multiple-use buttons.
  • the camera 10 can preferably take measurements in metric and/or imperial units.
  • the zoom capability of the camera 10 is optical, it may additionally or alternatively be digital.
  • the first range finder means 46 may utilize pixilation of the image to determine distance, instead of or in addition to focal length.
  • the camera 10 is adapted for on-site use, for example by surveyors, estate agents, builders, site managers, engineers, and the like, and therefore comprises features to adapt it for this use.
  • the camera 10 is at least coat-pocket sized and more preferably trouser-pocket sized so that it can be easily carried, stored and transported.
  • the camera 10 has a touch-sensitive display screen 62 and preferably a stylus for touching the screen.
  • a user can use the stylus to select the elements of the image, and therefore the elements of the object or space, which he wishes to measure. This can be a point, line, area or volume. Without edge detection technology, the stylus can still be used, albeit with less ease, to delineate points, lines, areas and volumes manually.
  • the use of the touch-sensitive screen 62 and stylus increases the speed at which the camera 10 can be used to obtain measurements, thereby adapting it for quick, ready, on-site use.
  • the stylus preferably slots into a stylus compartment or hole built into the housing 12 of the camera 10 for compactness and safety, which further adapts it for on-site use.
  • Mechanisms known in the art for securing and removing said stylus such as click mechanisms or slide mechanisms may be used.
  • a graphical user interface provides intuitive instructions on how to select and measure points, lines, areas, volumes and the like.
  • the GUI may display on the touch-screen display 24 an image of a space with highlighted lines and shapes, selected line, and a measurement which is determined by the combined first and second distance measurements.
  • the stylus can be used to select points, lines, areas or volumes using edge detection technology, and the GUI can display their measurements, relative distances, etc, on-screen.
  • the camera 10 is preferably designed to resist shock upon dropping or banging, and preferably comprises at least one protective molding 64 on at least one side of the housing 12 for this purpose. More preferably, protective moldings 64 cover each corner of the camera 10 for increased protection. Preferably, rubber is used for the moldings. Alternatively, other natural or synthetic shock-absorbing materials, such as plastics, may be used. Thus there is less risk of damage to the camera 10 due to transportation from place to place, dropping, banging, etc, compared with similar sensitive and accurate photography and measurement equipment.
  • the housing 12 also preferably comprises a lanyard connector 66 for connecting a lanyard and wearing around the neck. An advantage of this is that the camera 10 is less likely to be dropped when being worn around the neck. Furthermore, this frees up both hands for climbing ladders and otherwise navigating around a site which may be partially built and otherwise awkward to navigate.
  • the camera 10 is beneficially used for obtaining measurements of a space by capturing a two dimensional image and calculating measurements of said space based on said image.
  • the dimensioned image is displayed on the display 24, so that the calculated dimensions can be viewed on the or adjacent to the parts measured.
  • the camera is adapted to store the dimensioned image to allow outputting and remote display and printing of the image with the dimensions on or adjacent to the parts measured.
  • the camera 10 is adapted for on-site use by being ruggedized and compact, thus dispensing with the need for a tripod and other theodolite apparatus.
  • the invention can be used in a method for quickly obtaining measurements of a space, comprising the steps of: capturing a two dimensional image of said space; and estimating the dimensions of said space from said image using an average of two separate distance measurement means.
  • the method uses the camera 10 of the present invention.
  • the term 'space' is used in the present application to mean any place, area, volume, etc which can be photographed.
  • the invention is directed towards taking measurements of the inside or outside of a building, and the space may be a room or part of a room inside a building or a part or whole of the outside of a building.
  • the space may be any area of which an image can be taken.
  • the space may be a very large area such as an entire landscape several miles wide or may be a very small space of the order of a few cubic metres or centimetres in volume.
  • On-site' is used herein and throughout to mean at the location where the image is captured thus enabling measurements to be taken while the user remains at the 'space' where the image was taken.
  • the invention is directed towards use by surveyors, estate agents, builders, site managers, engineers, and the like, therefore 'on-site' is most likely to be a building site, a demolition site, an industrial or residential building or outdoor location and is therefore likely to be a place which is hazardous and awkward to navigate.
  • On-site' may however be used to refer to any location where an image is captured.
  • the camera 10 is preferably a digital camera 10.
  • An advantage of this is that images can be more readily accessed by on-board software for dimension estimation.
  • the camera 10 includes at least one USB port, Bluetooth RTM and/or other wireless connectivity protocol, removable rechargeable battery, tripod adaptor provided on a lower surface 22 of the housing 12, and memory card slot or slots.
  • the camera 10 may have one, more or a combination of these features.
  • the calculation means for calculating measurements of said space based on said image are image-based object reconstruction techniques.
  • the means for calculating measurements of said space preferably operates along the following principles.
  • the means for calculating measurements of said space comprises a lens and software for focusing the lens on an object within the space.
  • the software calculates the distance from the camera to the object based at least primarily on focal length. This distance is then used to calculate approximate values of the other distances within the image in light of angular spacing, focal change, and the preferable edge recognition technology.
  • the software scales up the distance between points on the image to create an estimate of the distances between points on the object or within the space.
  • the emitted-beam range finder generates a distance based on, for example, the reflected light. This is compared to the distance determined using the focal length of the first range finder means, and a base distance is thus determined. This correction value is then utilized to moderate the other off- focus values, whereby a more accurate distance can be determined between the points.
  • Further techniques are known in the art for edge detection, and preferably these are also included in the camera. Using such technology, when in dimension mode the camera can detect edges, corners, areas and the like and automatically highlight them on-screen. The user can then easily select a corner, wall, floor, or other surface or line that is required to be measured, simply by selecting a point on the surface or line and without having to accurately delineate it using a stylus or other method.
  • the camera preferably comprises as part of the second range finder means an infra-red or laser range finder for calculating the distance between the camera and the object in the space.
  • This range finder provides a second estimate of the distance which can be combined with the first as estimated by the lens and software to increase accuracy.
  • a further separate different range finder for further optimizing a calculated distance.
  • a focal length range finder and an infra-red range finder are provided, then a laser range finder may also be incorporated into the camera.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Multimedia (AREA)
  • Optics & Photonics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

L'invention porte sur un appareil photographique numérique portable à la main (10), lequel appareil comprend un boîtier d'appareil photographique (12) ayant un dispositif d'affichage (24), un bouton de mise en marche (14), un bouton de prise de vue (28), une unité de flash (20) et un compartiment de piles ; des moyens de capture (34) pour capturer une image d'un objet sous une forme en deux dimensions et pour délivrer en sortie l'image en deux dimensions capturée au dispositif d'affichage (24) ; des premiers moyens formant télémètre (46) comprenant une unité d'objectif pouvant effectuer un zoom (16), supportée par le boîtier (12), pour effectuer une focalisation sur un objet, et des moyens de calcul (50) pour calculer une première distance de l'objet par rapport à l'unité d'objectif (16), et, par conséquent, une distance entre des points sur l'image en deux dimensions capturée vue et sélectionnée sur le dispositif d'affichage (24) ; et des seconds moyens formant télémètre (48) comprenant un télémètre à faisceau émis (54) sur le boîtier (12) pour calculer séparément une seconde distance de l'objet par rapport au télémètre à faisceau émis (54), et pour délivrer en sortie la seconde distance aux moyens de calcul (50) des premiers moyens formant télémètre (46) pour une combinaison avec ceux-ci pour améliorer une précision de détermination de distance.
PCT/GB2010/051249 2010-07-29 2010-07-29 Appareil photographique numérique portable à la main comportant un télémètre WO2012013914A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/GB2010/051249 WO2012013914A1 (fr) 2010-07-29 2010-07-29 Appareil photographique numérique portable à la main comportant un télémètre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/GB2010/051249 WO2012013914A1 (fr) 2010-07-29 2010-07-29 Appareil photographique numérique portable à la main comportant un télémètre

Publications (1)

Publication Number Publication Date
WO2012013914A1 true WO2012013914A1 (fr) 2012-02-02

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2503978A (en) * 2012-05-18 2014-01-15 Honeywell Int Inc Untouched 3D Measurement with Range Imaging
WO2015008587A1 (fr) * 2013-07-16 2015-01-22 富士フイルム株式会社 Dispositif de capture d'image, et dispositif de mesure tridimensionnelle
US10419655B2 (en) 2015-04-27 2019-09-17 Snap-Aid Patents Ltd. Estimating and using relative head pose and camera field-of-view
US10782119B2 (en) 2015-02-11 2020-09-22 Huawei Technologies Co., Ltd. Object dimension measurement method and apparatus
US11255663B2 (en) 2016-03-04 2022-02-22 May Patents Ltd. Method and apparatus for cooperative usage of multiple distance meters
US11290708B2 (en) 2019-02-19 2022-03-29 Edgy Bees Ltd. Estimating real-time delay of a video data stream
CN116774240A (zh) * 2023-08-28 2023-09-19 山东省物化探勘查院 一种组合式红外测距仪

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001004377A (ja) 1999-05-14 2001-01-12 Zsp Geodaetische Systeme Gmbh ビデオ・タキメータによる測地測量の方法および配置
US20060125924A1 (en) * 2004-12-15 2006-06-15 Asia Optical Co., Inc. Range finding digital camera
US20070030348A1 (en) * 2005-08-04 2007-02-08 Sony Ericsson Mobile Communications Ab Wireless communication device with range finding functions
GB2470203A (en) * 2009-05-13 2010-11-17 Adam Lomas Camera having an integral image based object measurement facility

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001004377A (ja) 1999-05-14 2001-01-12 Zsp Geodaetische Systeme Gmbh ビデオ・タキメータによる測地測量の方法および配置
US20060125924A1 (en) * 2004-12-15 2006-06-15 Asia Optical Co., Inc. Range finding digital camera
US20070030348A1 (en) * 2005-08-04 2007-02-08 Sony Ericsson Mobile Communications Ab Wireless communication device with range finding functions
GB2470203A (en) * 2009-05-13 2010-11-17 Adam Lomas Camera having an integral image based object measurement facility

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2503978A (en) * 2012-05-18 2014-01-15 Honeywell Int Inc Untouched 3D Measurement with Range Imaging
WO2015008587A1 (fr) * 2013-07-16 2015-01-22 富士フイルム株式会社 Dispositif de capture d'image, et dispositif de mesure tridimensionnelle
JP5902354B2 (ja) * 2013-07-16 2016-04-13 富士フイルム株式会社 撮影装置及び３次元計測装置
US20160103209A1 (en) * 2013-07-16 2016-04-14 Fujifilm Corporation Imaging device and three-dimensional-measurement device
US10782119B2 (en) 2015-02-11 2020-09-22 Huawei Technologies Co., Ltd. Object dimension measurement method and apparatus
EP3246659B1 (fr) * 2015-02-11 2022-04-06 Huawei Technologies Co., Ltd. Procédé et dispositif de mesure de la taille d'un objet
US10594916B2 (en) 2015-04-27 2020-03-17 Snap-Aid Patents Ltd. Estimating and using relative head pose and camera field-of-view
US10419655B2 (en) 2015-04-27 2019-09-17 Snap-Aid Patents Ltd. Estimating and using relative head pose and camera field-of-view
US11019246B2 (en) 2015-04-27 2021-05-25 Snap-Aid Patents Ltd. Estimating and using relative head pose and camera field-of-view
US11255663B2 (en) 2016-03-04 2022-02-22 May Patents Ltd. Method and apparatus for cooperative usage of multiple distance meters
US11906290B2 (en) 2016-03-04 2024-02-20 May Patents Ltd. Method and apparatus for cooperative usage of multiple distance meters
US11290708B2 (en) 2019-02-19 2022-03-29 Edgy Bees Ltd. Estimating real-time delay of a video data stream
US11563932B2 (en) 2019-02-19 2023-01-24 Edgy Bees Ltd. Estimating real-time delay of a video data stream
CN116774240A (zh) * 2023-08-28 2023-09-19 山东省物化探勘查院 一种组合式红外测距仪
CN116774240B (zh) * 2023-08-28 2023-11-17 山东省物化探勘查院 一种组合式红外测距仪

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