WO2013124180A2 - Dispositif d'affichage en 3d d'une image photofinish - Google Patents
Dispositif d'affichage en 3d d'une image photofinish Download PDFInfo
- Publication number
- WO2013124180A2 WO2013124180A2 PCT/EP2013/052698 EP2013052698W WO2013124180A2 WO 2013124180 A2 WO2013124180 A2 WO 2013124180A2 EP 2013052698 W EP2013052698 W EP 2013052698W WO 2013124180 A2 WO2013124180 A2 WO 2013124180A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- camera
- image
- photofinish
- finish line
- aligned
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/20—Image signal generators
- H04N13/204—Image signal generators using stereoscopic image cameras
- H04N13/243—Image signal generators using stereoscopic image cameras using three or more two-dimensional [2D] image sensors
-
- 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
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
-
- 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
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/24—Details of cameras or camera bodies; Accessories therefor with means for separately producing marks on the film, e.g. title, time of exposure
-
- 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
- G03B35/00—Stereoscopic photography
- G03B35/08—Stereoscopic photography by simultaneous recording
-
- 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
- G03B41/00—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F10/00—Apparatus for measuring unknown time intervals by electric means
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C1/00—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
- G07C1/22—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people in connection with sports or games
- G07C1/24—Race time-recorders
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/0806—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division the signals being two or more video signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
Definitions
- the present invention relates to the display of timed data during a sports competition, and more particularly to a display of type photofinish at a finish line.
- the chronometer In the context of timed sports races, and in particular track and field races, the chronometer is generally triggered synchronously with the emission of an acoustic signal and stopped for each competitor when each crosses the finish line respectively. . It is possible, however, that the resolution of the timing system, for example typically the hundredth of a second, is not sufficient to decide between two competitors whose measured time is identical. To this end, timekeeping devices are required and there are manually operated systems for this purpose which are based on the visual recognition of images taken sequentially by a high definition camera centered very precisely at the line of the camera. 'arrival.
- An operator analyzes, asynchronously after the arrival of the competitors, the sequence of images taken at given times and therefore corresponding to a timed time; this analysis makes it possible to determine a more precise time of crossing the line of each competitor, for example by the thousandth of a second and to classify competitors reliably.
- This type of auxiliary display system for timing is usually called "photofinish".
- auxiliary display system Such a type of auxiliary display system, known for a relatively long time, is described for example in the document US3502009 relating to a dog race.
- the photofinish device makes it possible to superimpose time values, obtained using a first objective centered on a timing device, on images of competitors using a second objective centered on the line of arrival.
- the film thus developed allows to determine the first to cross the line and its time of passage.
- the "photofinish" type systems very often use several cameras.
- none of the cameras used can be shifted sideways to solve this masking problem; this is the reason why the two cameras used are located respectively on both sides of the finish line.
- Stereoscopic optical systems are also known for displaying three-dimensional images, which make it easier and more intuitive for the user to view them. These stereoscopic systems are based on the construction of a relief image according to the cerebral scheme, that is to say, from the analysis of two plane images taken along distinct axes of view.
- An object of the present invention is to provide a device and a method for displaying 3-dimensional photofinish images.
- Another object of the present invention is to provide such a device and such a method that is simple to implement and inexpensive.
- a system imaging device of the photofinish type comprising a first camera aligned with a finish line, and characterized in that it comprises a second camera also aligned on the finish line and offset from a first height relative to the first camera for displaying stereoscopic three-dimensional images.
- a first method for the formation of a three-dimensional photofinish image characterized in that it contains the steps of defining a shooting time T, of time synchronization of a first and a second camera, aligned at the finish line and offset by a height h, on a reference time To, of forming a first image by the first camera for this reference time To and of forming a second image by the second camera for the same reference time To, and then aggregating these two images to form a stereoscopic type image.
- Particular embodiments of the invention are defined in the dependent claims.
- An advantage of the present invention is to produce a relief-type photofinish image in a simple manner, without the need for complex image processing tools, and which can be easily displayed for spectators present in a sports enclosure or viewers.
- Another advantage of the solution is to provide a modular architecture for the implementation of a stereoscopic display system and method, requiring little modification compared to the usual existing infrastructure for photofinish type systems.
- FIG. 1A and B respectively show a front view, in the axis of a finish line, and from above a plurality of cameras used according to a preferred embodiment of the invention
- FIG. 2 illustrates a diagram of the cameras used as well as an image management system for the production of stereoscopic images according to a preferred embodiment of the invention
- FIG. 3 illustrates a diagram of the different processing steps for the formation and stereoscopic display of images according to a preferred embodiment of the invention.
- FIG. 1A shows a front view, in the axis of a finish line, of a plurality of cameras used according to a preferred embodiment of the present invention.
- the stereoscopic images are formed from two images taken at the same reference time by two cameras offset in height relative to one another.
- a first camera C1 and a second camera C2 both aligned on the finish line, are mutually offset by a first height h and similarly and a third camera C3 and fourth camera C4, both aligned on the line of arrival, are mutually offset by a second height h '.
- the advantage of having two pairs of cameras located on either side of the finish line, that is to say to form the pairs C1-C2 and C3-C4, consists in being able to choose the pair of most advantageous camera depending on the position of the various competitors on the finish line to avoid any masking.
- FIG. 1B illustrating the same eight lanes L1-L8 as well as the finish line 0, shows the alignment of the four cameras C1, C2, C3, C4 on this finish line 0 as well as their grouping in pairs C1 -C2 and C3-C4 on either side of the finish line 0.
- the cameras of each pair are shown with a slight axial shift to better distinguish them mutually.
- the height difference between the cameras of each of the pairs is chosen, for practical reasons, much greater than the spacing interocular to facilitate their installation.
- a first spacing h and a second spacing h ' preferably between 40 and 50 centimeters, in order to allow sufficient space for installation of the 2nd pair the camera when the first has already been positioned, and at the same time be able to correct the multiplicative factor of the distance between the cameras of each pair relative to the average interocular space by zooming effect, that is to say by modifying the focal distance of the camera lens.
- the first spacing h and the second spacing h ' need not be equal, and may be adjusted according to the constraints of the venue where the competition is held, so as not to require any adjustment of the existing infrastructure and thus minimize the constraints congestion of the proposed imaging system.
- FIG. 2 illustrates a diagram of the imaging device for a photofinish system according to a preferred embodiment of the invention, showing in detail the physical architecture of the two cameras C1 and C2, illustrated in the previous FIG. 1 B, and their interaction with the timing system 6 and the stereoscopic display system 3.
- Each of the two cameras C1 and C2 comprises a lens (referenced respectively 10 and 20 for each camera) at the end of an objective forming the image of a narrow band (referenced respectively 1 and 2 for each camera, and also commonly known as "frames") of height H and width / via matrix sensors of the LS-CCD type (that is to say Line-Scan Charge Coupled Device), or CMOS referenced respectively 1 1 and 21 for each camera C1 and C2, whose size can reach several thousand pixels.
- the objective is preferably set at the finish line to display an image of a predefined height H, which is done using a number N of pixels of the matrix, visible in the figures 3A and 3B below.
- the LS-CCD / CMOS sensor may preferably consist of a matrix of a single column of pixels, so that the width / corresponding of the image bands 1 and 2 is completely determined according to the height H of the image to be displayed and the number N of pixels of the column of this sensor. According to one variant, it is possible to use a matrix CCD / CMOS sensor comprising several columns, of which only one predefined column is used to form the images at the finish line.
- An image pickup controller (referenced respectively 15-25 on each camera C1, C2) detects the brightness levels at each of the LS-CCD / CMOS sensors 1 1 -21 at regular time intervals, then amplifies the output signals using amplifiers preferably controlled gain (referenced respectively 12 and 22 on each of C1-C2 cameras) and converts them in digital form using analog-digital converters (AD, referenced respectively 13 -23 for each of the cameras C1 and C2) and saves them in a memory area (referenced respectively 14-24 for each of the cameras C1 and C2).
- a succession of image bands 1 and 2 respectively taken by each of the cameras C1 and C2 are saved in the form of columns of pixels 101 and 102 respectively (visible in the following FIG.
- Memory areas also called “buffers" preferably contain several hundred megabytes of RAM, for example SDRAM (synchronous dynamic random access memory) to contain several hours of images.
- each of the cameras C1 and C2 In order to guarantee the mutual synchronization of each of the cameras C1 and C2 on a relative reference time, that is to say with respect to the start of a race, and not just an absolute time, they will each be connected to the system. 6.
- Each of the transmitted pixel columns corresponding to a reference time can be saved with a marker ("flag" in English) corresponding to this reference time and thus allow easier subsequent processing of the data.
- the first camera C1 and the second camera C2 are each connected to an image management system 4, for example a computer server, comprising a processor 41 and a memory unit 42 for processing the data recovered at the output of the memory areas 14-24 cameras C1 and C2 and form a stereoscopic image 30.
- the image management system 4 is also connected to a control screen 5 to allow an operator to view the images before transmitting them via a line transmission 31 for example of the broadcast type, to television receivers (for example via a digital radio network, compliant with the DVB standard) or to a group of computers connected to the Internet via an IP-multicast network.
- FIG. 3 shows a preferred variant of the method according to which a photofinish stereoscopic image can be generated.
- the method for forming a three-dimensional photofinish image contains a step (A) prior to defining a shooting duration (T), which determines the size of the image that is to be displayed , or more precisely its width L.
- the sampling frequency for example every thousandths of a second, as well as the time T of the duration of the capture of view, which is chosen as a multiple of the thousandth, such as for example a second, determines a number of pixels M which conditions the width L of the corresponding image.
- the time axis t extends from right to left from a chosen reference moment To which corresponds to the time of shooting of the rightmost image bands, all the other image bands having been taken after this reference moment.
- the first and second images taken by the first and second cameras C1 and C2 are respectively referenced 11 and 12; they are digitized in the form of a matrix of pixels N * M, corresponding to a height H and a width L.
- the pixel matrix is obtained by aggregation of the different pixel columns 101 and 102 respectively corresponding to the image bands (or frames) 1 and 2.
- each image 11 and 12 of each camera C1 and C2 corresponds to the same time To, it is necessary to perform a time synchronization step (B0) of the first camera C1 and the second camera C2, which are both aligned on the finish line 0, before forming the stereoscopic image 30, because according to this mode of Preferred embodiment each of the images composing the stereoscopic image must correspond to what each eye sees simultaneously.
- this synchronization has been performed by connecting each of the cameras to the timing system 6, the first image 11 obtained from the first camera C1 is formed for the said reference time To and the second image 12 obtained from the second camera C2 for the reference time To during steps B1 and B2, performed alternately or simultaneously by the image management system 4.
- the axis of the two cameras C1, C2 - and also that of the cameras C3, C4 opposite side of the finish line - is vertical in the plane of the finish line, and it determines the orientation line. eyes perceiving the stereoscopic image.
- the stereoscopic image is formed as if the first camera C1 was the left or right eye, and the second camera C2 was the other eye, which would force a viewer to bend his head 90 degrees to the right or the right. left to correctly view the stereoscopic image 30, formed by the images 11 and 12, without further image processing.
- an additional image recovery step C will be carried out, consisting, for example, of unstacking sub-steps C and matrix transposition C ", when this rectification operation is carried out by the control system. computer image processing 4.
- the sub-step of unstacking C makes it possible to perform a central symmetry by saving all the columns of pixels corresponding to the frames of the images 11 and 12 in LIFO mode (last in first out) in a new stack of data, while the matrix transposition operation consists in inverting the rows and columns of the matrix.It is easy to see that the sequence of steps C followed by C "makes it possible to rotate 90 degrees in the direction counterclockwise each of the images, while the sequence of steps C "followed by C makes it possible to rotate 90 in the clockwise direction.
- the choice of one or the other of these sequences makes it possible to assign a virtual camera at one eye and determine the axis of view: step C followed by step C "will match the first camera C1 to the right eye and straighten images 11 and 12 to produce a stereoscopic image 30 with a front view competitors and the reverse sequence, ie step C "followed by step C will match the first C1 camera to the left eye, with the competitors' back view.
- the stereoscopic image 30 can be formed by the computer image management system 4 by aggregating the two rectified images during the aggregation step D, and then the stereoscopic display system 3. can emit, during a subsequent step E, the stereoscopic image 30 on a transmission network 31, for example broadcast, for remote display on remote receivers after verification by an operator on a control screen.
- a display iteration can already be performed by the operator of the photofinish system on the control screen 5; this preliminary step will also determine the possible masking on the first camera C1 and the need to switch to the pair of third and fourth cameras C3, C4 on the opposite side of the finish line.
- digital image processing means are used for image recovery before forming a stereoscopic image via the computer image management system 4; according to an alternative embodiment one could imagine using optical means of the periscopic type with reference to 45 degrees, which would remove a data processing step. In order not to change the existing camera structure used at the finish line, one could use periscopic glasses mounted in a modular way on their objective.
- the device and method above also have the advantage of requiring very little modification of the physical architecture of existing photofinish type systems, with the possible addition of additional cameras for image capture under other angles of view.
- all the intelligence of the system and of the proposed method is transferred in the back-end of the infrastructure, that is to say a part not visible for the spectators, with additional modules for the post-processing of the images conventional photofinish obtained by the camera or cameras on the finish line, and specific stereoscopic display means for forming three-dimensional images.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Stereoscopic And Panoramic Photography (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Studio Devices (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Closed-Circuit Television Systems (AREA)
Description
Claims
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13704090.3A EP2817675B1 (fr) | 2012-02-22 | 2013-02-11 | Dispositif d'affichage en 3d d'une image photofinish |
| US14/380,208 US9774842B2 (en) | 2012-02-22 | 2013-02-11 | Device for 3D display of photo finish image |
| CA2865015A CA2865015C (fr) | 2012-02-22 | 2013-02-11 | Dispositif d'affichage en 3d d'une image photofinish |
| HK15104693.5A HK1204084A1 (en) | 2012-02-22 | 2013-02-11 | Device for 3d display of a photofinish image |
| CN201380010526.1A CN104246598A (zh) | 2012-02-22 | 2013-02-11 | 用于3d显示终点摄影图像的装置 |
| AU2013224324A AU2013224324B2 (en) | 2012-02-22 | 2013-02-11 | Device for 3D display of a photofinish image |
| JP2014558061A JP6110883B2 (ja) | 2012-02-22 | 2013-02-11 | 写真判定画像の三次元表示用装置 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12156514 | 2012-02-22 | ||
| EP12156514.7 | 2012-02-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2013124180A2 true WO2013124180A2 (fr) | 2013-08-29 |
| WO2013124180A3 WO2013124180A3 (fr) | 2014-10-23 |
Family
ID=47714090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2013/052698 Ceased WO2013124180A2 (fr) | 2012-02-22 | 2013-02-11 | Dispositif d'affichage en 3d d'une image photofinish |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US9774842B2 (fr) |
| EP (1) | EP2817675B1 (fr) |
| JP (1) | JP6110883B2 (fr) |
| CN (1) | CN104246598A (fr) |
| AU (1) | AU2013224324B2 (fr) |
| CA (1) | CA2865015C (fr) |
| HK (1) | HK1204084A1 (fr) |
| WO (1) | WO2013124180A2 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220111285A1 (en) * | 2020-10-09 | 2022-04-14 | Swiss Timing Ltd | Method and system for improved measurement of the time of passage on a timekeeping line |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9398196B2 (en) | 2014-04-28 | 2016-07-19 | Lynx System Developers, Inc. | Methods for processing event timing images |
| US9413926B2 (en) | 2014-04-28 | 2016-08-09 | Lynx System Developers, Inc. | Systems for processing event timing images |
| US10375300B2 (en) | 2014-04-28 | 2019-08-06 | Lynx System Developers, Inc. | Methods for processing event timing data |
| WO2020019248A1 (fr) * | 2018-07-26 | 2020-01-30 | 威超智能股份有限公司 | Procédé, serveur et système d'évaluation vidéo |
| EP3667415B1 (fr) * | 2018-12-12 | 2022-03-02 | Swiss Timing Ltd. | Procede et systeme d'affichage d'une image instantanee de l'arrivee d'une course a partir d'une image temporelle de type photofinish |
| EP3933787A1 (fr) * | 2020-07-02 | 2022-01-05 | Swiss Timing Ltd | Systeme de jugement ou détermination de position sur une ligne de passage d'une compétition sportive, et procédé pour sa mise en action |
| CN114373249A (zh) * | 2022-01-11 | 2022-04-19 | 西安菲猫创达智能技术有限公司 | 一种先拍摄后对准的终点摄像计时系统及其工作方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3502009A (en) | 1967-12-22 | 1970-03-24 | Fred J Connors | Race timer system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4488794A (en) * | 1982-06-28 | 1984-12-18 | Joanne Dolgow | Photographic apparatus for making simultaneous exposures |
| JPH07298307A (ja) * | 1994-04-28 | 1995-11-10 | Canon Inc | 画像記録再生装置 |
| JP3183318B2 (ja) * | 1994-05-20 | 2001-07-09 | 日立電子株式会社 | 着順およびタイム判定装置 |
| JP3222333B2 (ja) * | 1994-10-17 | 2001-10-29 | セイコーインスツルメンツ株式会社 | 着順判定装置 |
| US5974272A (en) * | 1997-10-29 | 1999-10-26 | Eastman Kodak Company | Parallax corrected image capture system |
| US6545705B1 (en) * | 1998-04-10 | 2003-04-08 | Lynx System Developers, Inc. | Camera with object recognition/data output |
| US6433817B1 (en) * | 2000-03-02 | 2002-08-13 | Gavin Guerra | Apparatus and method for determining the winner of a race |
| JP3729818B2 (ja) * | 2003-05-14 | 2005-12-21 | 株式会社日立国際電気 | 着順およびタイム判定装置 |
| JP2006339703A (ja) * | 2005-05-31 | 2006-12-14 | Furoobell:Kk | 画像処理装置および方法、プログラム、並びに記録媒体 |
| US8442304B2 (en) * | 2008-12-29 | 2013-05-14 | Cognex Corporation | System and method for three-dimensional alignment of objects using machine vision |
| US8090251B2 (en) * | 2009-10-13 | 2012-01-03 | James Cameron | Frame linked 2D/3D camera system |
| JP2013048334A (ja) * | 2011-08-29 | 2013-03-07 | Sony Corp | 画像処理装置および方法、画像処理システム、並びにプログラム |
| US9390752B1 (en) * | 2011-09-06 | 2016-07-12 | Avid Technology, Inc. | Multi-channel video editing |
-
2013
- 2013-02-11 EP EP13704090.3A patent/EP2817675B1/fr active Active
- 2013-02-11 JP JP2014558061A patent/JP6110883B2/ja not_active Expired - Fee Related
- 2013-02-11 WO PCT/EP2013/052698 patent/WO2013124180A2/fr not_active Ceased
- 2013-02-11 AU AU2013224324A patent/AU2013224324B2/en not_active Ceased
- 2013-02-11 CA CA2865015A patent/CA2865015C/fr not_active Expired - Fee Related
- 2013-02-11 US US14/380,208 patent/US9774842B2/en active Active
- 2013-02-11 HK HK15104693.5A patent/HK1204084A1/xx unknown
- 2013-02-11 CN CN201380010526.1A patent/CN104246598A/zh active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3502009A (en) | 1967-12-22 | 1970-03-24 | Fred J Connors | Race timer system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220111285A1 (en) * | 2020-10-09 | 2022-04-14 | Swiss Timing Ltd | Method and system for improved measurement of the time of passage on a timekeeping line |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015515605A (ja) | 2015-05-28 |
| CA2865015C (fr) | 2017-12-05 |
| AU2013224324B2 (en) | 2016-01-28 |
| CN104246598A (zh) | 2014-12-24 |
| EP2817675B1 (fr) | 2016-04-20 |
| WO2013124180A3 (fr) | 2014-10-23 |
| US20150015675A1 (en) | 2015-01-15 |
| CA2865015A1 (fr) | 2013-08-29 |
| AU2013224324A1 (en) | 2014-09-04 |
| JP6110883B2 (ja) | 2017-04-05 |
| US9774842B2 (en) | 2017-09-26 |
| EP2817675A2 (fr) | 2014-12-31 |
| HK1204084A1 (en) | 2015-11-06 |
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