WO2013099571A1 - 視差調整装置、画像処理装置、フレームフォーマット - Google Patents
視差調整装置、画像処理装置、フレームフォーマット Download PDFInfo
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- WO2013099571A1 WO2013099571A1 PCT/JP2012/081911 JP2012081911W WO2013099571A1 WO 2013099571 A1 WO2013099571 A1 WO 2013099571A1 JP 2012081911 W JP2012081911 W JP 2012081911W WO 2013099571 A1 WO2013099571 A1 WO 2013099571A1
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- parallax adjustment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
- H04N13/31—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using parallax barriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
- H04N5/77—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
- H04N13/106—Processing image signals
- H04N13/128—Adjusting depth or disparity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
- H04N13/106—Processing image signals
- H04N13/144—Processing image signals for flicker reduction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
- H04N13/106—Processing image signals
- H04N13/172—Processing image signals image signals comprising non-image signal components, e.g. headers or format information
- H04N13/178—Metadata, e.g. disparity information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
- H04N5/77—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera
- H04N5/772—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera the recording apparatus and the television camera being placed in the same enclosure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
- H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
- H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
- H04N9/8227—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being at least another television signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2213/00—Details of stereoscopic systems
- H04N2213/002—Eyestrain reduction by processing stereoscopic signals or controlling stereoscopic devices
Definitions
- the present disclosure relates to a parallax adjustment device, an image processing device, and a frame format.
- 3D display devices that allow a user to perceive a stereoscopic image by displaying a left-eye image (L image) and a right-eye image (R image) are in circulation.
- the focal length is different even when the convergence angle is the same as the real world, and the baseline length and the convergence angle are different between the display time and the imaging recording time.
- causes visual fatigue In particular, when a part of the image protrudes excessively, or when a change in parallax is large, such as when an object pops out accidentally during moving image display, the burden on the user becomes heavy.
- Patent Document 1 discloses a parallax conversion device that performs parallax adjustment of an L image and an R image by shifting the L image and / or the R image in the horizontal direction. Specifically, when the perceived position of the object is on the near side of the screen, the perceived position of the object can be brought closer to the screen by shifting the R image to the right and the L image to the left. That is, the feeling of popping out can be suppressed. Similarly, when the perceived position of the object is on the back side of the screen, the perceived position of the object can be brought closer to the screen by shifting the R image to the left and the L image to the right. That is, it is possible to emphasize the feeling of popping out.
- the 2D display device In the recording for 3D display as described above, usually only the L image and the R image are recorded, and a dedicated 2D image for 2D display is rarely recorded. For this reason, the 2D display device generally displays an L image or an R image in order to perform 2D display from an image recorded for 3D display.
- the parallax adjustment described above has some adverse effects. For example, since the shift amount in the parallax adjustment differs in the time axis direction, when only the L image or the R image is displayed on the 2D display device, the subject that should be stationary appears to swing (moves) to the left and right, which is for the user. It becomes an unpleasant 2D image.
- the present disclosure proposes a new and improved parallax adjustment device, image processing device, and frame format for eliminating the adverse effects caused by parallax adjustment of the left-eye image and the right-eye image.
- a parallax adjustment unit that performs parallax adjustment of a left-eye image and a right-eye image obtained by imaging, and an image that includes metadata related to the parallax adjustment including the left-eye image and the right-eye image
- a parallax adjustment device including a data processing unit associated with data.
- image data including a left-eye image and a right-eye image, and metadata related to parallax adjustment for the left-eye image and the right-eye image associated with the image data are stored.
- An image processing apparatus includes a data acquisition unit to be acquired and an image extraction unit that extracts a region of the left-eye image or the right-eye image based on the metadata.
- FIG. 3 is a functional block diagram illustrating a configuration of an imaging apparatus according to an embodiment of the present disclosure. It is explanatory drawing which showed the structural example of the parallax adjustment metadata. It is explanatory drawing which showed the structural example of the parallax adjustment metadata.
- FIG. 3 is a functional block diagram illustrating a configuration of a playback device according to an embodiment of the present disclosure.
- FIG. 3 is a functional block diagram illustrating a configuration of a display device according to an embodiment of the present disclosure. It is explanatory drawing which showed the image process for 2D display. It is the flowchart which showed the operation
- a plurality of constituent elements having substantially the same functional configuration may be distinguished by adding different alphabets after the same reference numeral.
- it is not necessary to particularly distinguish each of a plurality of constituent elements having substantially the same functional configuration only the same reference numerals are given.
- FIG. 1 is an explanatory diagram illustrating a configuration of an image processing system according to an embodiment of the present disclosure.
- the image processing system according to the embodiment of the present disclosure includes an imaging device 20, a playback device 30, and a display device 40.
- the imaging device 20 has an imaging unit that converts light emitted from a subject into an electrical image signal. More specifically, the imaging device 20 according to the embodiment of the present disclosure includes the imaging unit 22L and the imaging unit 22R as illustrated in FIG. The imaging unit 22L acquires an L image for 3D display, and the imaging unit 22R acquires an R image for 3D display.
- the imaging device 20 adjusts the parallax of the LR image and encodes metadata regarding the parallax adjustment together with the LR image to generate a data stream. Then, the imaging device 20 records a data stream including metadata related to parallax adjustment and an LR image on a recording medium.
- the imaging device 20 is illustrated as an example of a parallax adjustment device that adjusts the parallax of the LR image, but the parallax adjustment device is not limited to the imaging device 20.
- the parallax adjustment device may be an information processing device such as a PC (Personal Computer), a home video processing device (DVD recorder, VCR, etc.), a PDA (Personal Digital Assistant), a home game device, or a home appliance. Good.
- the parallax adjustment device may be an information processing device such as a smartphone, a mobile phone, a PHS (Personal Handyphone System), a portable music playback device, a portable video processing device, or a portable game device.
- the playback device 30 reads a data stream from a recording medium on which a data stream including metadata related to parallax adjustment and an LR image is recorded, and performs playback processing for 3D display or 2D display based on the read data stream. Then, the reproduction data obtained by the reproduction device 30 is transmitted to the display device 40 and the recording device.
- the recording medium from which the playback device 30 reads the data stream may be a recording medium built in the playback device 30, a recording medium provided in the imaging device 20, or a detachable recording medium. It may be.
- the display device 40 has a 3D display function and a 2D display function.
- the display device 40 can perform 3D display or 2D display based on reproduction data transmitted from the reproduction device 30.
- the display device 40 can also perform 3D display or 2D display based on the data stream recorded on the recording medium.
- the playback device 30 and the display device 40 are examples of an image processing device.
- a home video processing device is illustrated as the playback device 30 and a TV display device is illustrated as the display device 40.
- the image processing device such as the display device 40 is not limited to such an example.
- the image processing apparatus may be an information processing apparatus listed as an example of the imaging apparatus.
- FIG. 2 is an explanatory diagram showing the principle of 3D display.
- the user perceives that the object exists at the intersection of the straight line connecting the right eye of the user and the object of the R image and the straight line connecting the left eye of the user and the object of the L image. For this reason, as shown in FIG. 2, when the crossing position is on the front side of the display surface of the display device 40, a feeling of popping out is obtained, and the crossing position is on the back side of the display surface of the display device 40. In some cases, a sense of depth is obtained.
- the perceived position of the object by the user is within a comfortable area where the user can comfortably fuse the LR image.
- FIG. 3B when the perceived position of the object by the user is within the failure area before the comfort area, the burden on the user becomes heavy, and the perceived position of the object by the user is deeper than the comfort area. If it is on the side, it is difficult to obtain a stereoscopic effect.
- Japanese Patent Laid-Open No. 2011-55022 discloses a parallax conversion device that performs parallax adjustment of an L image and an R image by shifting the L image and / or the R image in the horizontal direction. This parallax adjustment is realized by shifting only the L image, shifting only the R image, or evenly shifting the L image and the R image. In order not to move the central axis of the LR image, an equal shift of the LR image is most common. Hereinafter, the equal shift of the LR image will be briefly described with reference to FIG.
- FIG. 4 is an explanatory diagram showing an outline of equal shift of LR images.
- the adjustment amount is greater than X
- the L image and the R image are shifted by X / 2 in a direction in which the object is moved to the far side as a whole.
- the adjustment amount ⁇ X the L image and the R image are shifted by X / 2 in the direction in which the object is moved to the front side as a whole.
- an appropriate adjustment amount calculation method for each LR image is not particularly limited, but can be calculated by a known method as disclosed in, for example, Japanese Patent Application Laid-Open No. 2011-55022. Is omitted.
- the display device In the recording for 3D display as described above, usually only the L image and the R image are recorded, and a dedicated 2D image for 2D display is rarely recorded. For this reason, the display device generally displays an L image or an R image in order to perform 2D display from an image recorded for 3D display.
- parallax adjustment described above has some adverse effects. For example, since the amount of adjustment in parallax adjustment differs in the time axis direction, when only an L image or an R image is displayed, a subject that should be stationary appears to swing left and right (moves), which is uncomfortable for the user. End up. Hereinafter, this point will be specifically described with reference to FIG.
- FIG. 5 is an explanatory diagram showing a specific example of 2D display based on an L image or an R image on which parallax adjustment has been performed. More specifically, FIG. 5A shows a specific example of display by original 2D recording, and FIG. 5B shows a specific example of an L image that has been subjected to parallax adjustment.
- the position of the subject within the angle of view is fixed if the subject is stationary.
- the L image on which the parallax adjustment has been performed as illustrated in FIG. 5B, even when the subject is stationary, the position of the subject within the angle of view moves according to the time axis due to the parallax adjustment.
- the first adjustment amount X 1/2 of the L image is 0, the second and subsequent L image adjustment amount X 2/2 ⁇ adjustment amount X 6/2 is -4, -8 -12, -16, and -20, the 2D image becomes uncomfortable for the user.
- the embodiment of the present disclosure has been created with the above circumstances in mind. According to the embodiment of the present disclosure, it is possible to eliminate the adverse effects caused by the parallax adjustment of the L image and the R image as described above.
- the imaging device 20, the playback device 30, and the display device 40 according to the embodiment of the present disclosure will be sequentially described in detail. In the following, the description will be made assuming that the target is a moving image, but the embodiment of the present disclosure can also be applied to a still image.
- FIG. 6 is a functional block diagram illustrating a configuration of the imaging device 20 according to the embodiment of the present disclosure.
- the imaging device 20 includes an imaging unit 22L and an imaging unit 22R, a recording medium 28, an image processing unit 210L and an image processing unit 210R, a parallax adjustment unit 220, an encoding processing unit 230, A recording unit 240 and a 3D display unit 250 are provided.
- the imaging unit 22 includes an imaging optical system 24 such as a photographing lens and a zoom lens that collects light, and an imaging element 26 such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor).
- the imaging optical system 24 collects light emitted from the subject to form a subject image on the imaging device 26, and the imaging device 26 converts the formed subject image into an electrical image signal.
- the image signal of the L image obtained by the imaging unit 22L for the left eye is output to the image processing unit 210L
- the image signal of the R image obtained by the imaging unit 22R for the right eye is output to the image processing unit 210R.
- the image processing unit 210 performs development processing, correction processing, resolution conversion (scaling) processing, noise reduction processing, and the like on the image input from the imaging unit 22.
- the LR image pair processed by the image processing units 210L and 210R is output to the parallax adjustment unit 220. Note that the LR image pair is a pair of L image and R image linked to each other, and may be sent in a time division manner.
- the parallax adjustment unit 220 calculates the shift amount of the input LR image pair, that is, the parallax adjustment amount by an algorithm as described in Japanese Patent Application Laid-Open No. 2011-55022. Thereafter, the parallax adjustment unit 220 cuts out both of the LR images or one of the LR images in the horizontal direction according to the calculated adjustment amount. Note that the parallax adjustment unit 220 may replace the black-filled area or copy the image edge when there is a region that does not exist in the pre-cutout image.
- the parallax adjustment unit 220 outputs the LR image pair after parallax adjustment and information on the parallax adjustment to the encoding processing unit 230.
- the parallax adjustment unit 220 may shift an image set in advance.
- the method for shifting and cropping an image has been described as the parallax adjustment method.
- the parallax adjustment method is not limited to such an example.
- the encoding processing unit 230 performs encoding in a predetermined compression format so that the LR image pairs accumulated in the time direction and the later-described parallax adjustment metadata are associated with each other, and a data stream including the LR image pair and the parallax adjustment metadata is encoded.
- a data processing unit to be generated An example of the moving image compression format is “AVCHD 3D” created by AVCHD Ver 2.0, and an example of the still image compression format is MPO (Multi-Picture Format).
- the recording unit 240 records the data stream obtained by the encoding processing unit 230 on the recording medium 28.
- the recording medium 28 may be a storage medium such as a non-volatile memory, a magnetic disk, an optical disk, and a MO (Magneto Optical) disk.
- the non-volatile memory include flash memory, SD card, micro SD card, USB memory, EEPROM (Electrically Erasable Programmable Read-Only Memory), and EPROM (Erasable Programmable ROM).
- Examples of the magnetic disk include a hard disk and a disk type magnetic disk.
- Examples of the optical disc include a CD (Compact Disc), a DVD (Digital Versatile Disc), and a BD (Blu-Ray Disc (registered trademark)).
- the 3D display unit 250 displays the LR image pair output from the parallax adjustment unit 220 either directly or after being held once in a system general-purpose memory (not shown) such as SRAM or DRAM.
- parallax adjustment metadata is data indicating the content of the parallax adjustment performed by the parallax adjustment unit 220, and can be realized in various forms as described below.
- FIG. 7A is an explanatory diagram showing a first configuration example of parallax adjustment metadata.
- the parallax adjustment metadata according to the first configuration example includes a 1-bit flag indicating whether or not parallax adjustment has been performed, 10 bits indicating an adjustment amount on the L image side, and an R image side It consists of a total of 21 bits, 10 bits indicating the adjustment amount.
- Whether or not the parallax adjustment has been performed can be expressed by two types of states, and therefore the flag indicating whether or not the parallax adjustment has been performed is configured by 1 bit. Further, as shown in FIG. 7A, by arranging 10-bit data to indicate the adjustment amount of each image, ⁇ 512 to 511 can be expressed.
- the adjustment amount is generally expressed by two's complement, but the expression method is not particularly limited, and any expression such as straight binary or one's complement can be used.
- FIG. 7B is an explanatory diagram showing a second configuration example of the parallax adjustment metadata.
- the parallax adjustment metadata according to the second configuration example includes a 1-bit flag indicating whether or not parallax adjustment has been performed, 2 bits indicating an image on which parallax adjustment has been performed, and an adjustment amount. It consists of a total of 13 bits with 10 bits indicating. For example, 2 bits indicating an image on which parallax adjustment has been performed may indicate the following contents when the adjustment amount is X.
- the data amount of the parallax adjustment metadata can be suppressed by expressing the image on which the parallax adjustment has been performed with 2 bits.
- FIG. 7C is an explanatory diagram showing a third configuration example of the parallax adjustment metadata.
- the parallax adjustment metadata according to the third configuration example includes 11 bits in total, that is, a flag 1 bit indicating whether or not the parallax adjustment has been performed and 10 bits indicating the adjustment amount.
- the third configuration example can be used when the most common LR equal shift is implicitly defined. For example, this is effective when the manufacturer has a single parallax adjustment method and it is not necessary to distinguish between the parallax adjustment methods.
- each of the bit indicating the image on which the parallax adjustment has been performed and the bit indicating the adjustment amount may not be connected, and may be arranged dispersed in the metadata.
- data indicating other information may be arranged in a data portion for indicating an adjustment amount in parallax adjustment metadata.
- FIG. 8 is an explanatory diagram showing a modification of the parallax adjustment metadata.
- the parallax adjustment metadata according to the modified example includes 10 bits indicating the adjustment amount, 2 bits indicating the target image for parallax adjustment, and a flag indicating the nature of the adjustment amount indicated by the 10-bit data portion. It consists of a total of 13 bits, 1 bit.
- the flag 1 bit when the flag 1 bit is “1”, the fact that the parallax adjustment is actually performed and the adjustment amount in the parallax adjustment in which the adjustment amount indicated by the 10-bit data portion is actually performed Indicates that On the other hand, when the flag 1 bit is “0”, it indicates that the parallax adjustment has not been performed and that the adjustment amount indicated by the 10-bit data portion is a recommended parallax adjustment amount.
- the data area of the parallax adjustment metadata can be effectively used by arranging the data indicating other information in the parallax adjustment metadata.
- parallax adjustment metadata described above is ideally associated with an LR image pair (field, frame) in a one-to-one relationship, but may be associated with an arbitrary LR image pair.
- parallax adjustment metadata may be associated with each GOP.
- the data stream generated by the encoding processing unit 230 only needs to be compatible with an arbitrary image format and include parallax adjustment metadata indicating the content of parallax adjustment, and the compression format is not particularly limited.
- the parallax adjustment metadata includes the flag 1 bit indicating the presence / absence of the parallax adjustment.
- the parallax adjustment metadata may not include the flag 1 bit indicating the presence / absence of the parallax adjustment. In this case, it is possible to determine that the parallax adjustment is not performed when the adjustment amount indicated by the 10-bit data portion is 0, and that the parallax adjustment is performed when the adjustment amount is other than 0. .
- FIG. 9 is a flowchart showing the operation of the imaging apparatus 20 according to the embodiment of the present disclosure.
- FIG. 9 shows an operation example for one LR image pair
- the imaging device 20 may repeat the process shown in FIG. 9 or a certain amount of LR pair images may be displayed.
- the encoding process may be performed after the accumulation.
- the parallax adjustment unit 220 determines whether or not to perform parallax adjustment according to the pre-set contents as illustrated in FIG. 9 (S504). If the parallax adjustment unit 220 determines not to perform parallax adjustment, the parallax adjustment unit 220 outputs the parallax of the LR image pair as it is without adjusting the parallax (S508: through processing).
- the parallax adjustment unit 220 determines whether to perform automatic parallax adjustment or manual parallax adjustment (S512). Then, when performing the manual parallax adjustment, the parallax adjustment unit 220 performs parallax adjustment of the LR image with an adjustment amount that is set separately (S516).
- the parallax adjustment unit 220 calculates an optimal parallax adjustment amount from the input LR image pair (S520), and adjusts the parallax of the LR image pair by the calculated parallax adjustment amount (S524). ).
- the parallax adjustment unit 220 After the processing in S508, S516, or S524, the parallax adjustment unit 220 outputs an LR image pair and parallax adjustment metadata indicating the content of the parallax adjustment for the subsequent encoding processing unit 230 (S528).
- FIG. 10 is a functional block diagram illustrating a configuration of the playback device 30 according to the embodiment of the present disclosure.
- the playback device 30 according to the embodiment of the present disclosure includes a reading unit 310, a decoding processing unit 320, a re-parallax adjustment unit 330, and a communication processing unit 340.
- the reading unit 310 reads a data stream recorded in a format including parallax adjustment metadata from the recording medium 28, and outputs the data stream to the decoding processing unit 320.
- the decoding processing unit 320 converts the data stream into an L image, an R image, and parallax adjustment metadata, and outputs the L image, the R image, and the parallax adjustment metadata to the re-parallax adjustment unit 330. Note that the decoding processing unit 320 may output either the L image or the R image and the parallax adjustment metadata to the re-parallax adjustment unit 330 for 2D display.
- the re-parallax adjusting unit 330 performs parallax adjustment again on the LR image pair as necessary according to the separately set operation setting, and outputs the LR image pair after parallax adjustment to the communication processing unit 340.
- the processing by the re-parallax adjustment unit 330 differs depending on whether the output image is a 2D image or a 3D image.
- the process for outputting a 2D image will be described in “4.2 Image Processing for Display”, and the process for outputting a 3D image will be described in detail in “5.3 Image Display for Display”. To do.
- the re-parallax adjustment unit 330 may also output the parallax adjustment metadata after the re-parallax adjustment to the communication processing unit 340.
- the communication processing unit 340 converts the image input from the re-parallax adjustment unit 330 into an arbitrary transmission format such as wireless or wired, and transmits it to the display device 40 or the recording device 42 via a transmission medium such as a radio wave or a wired cable.
- a transmission medium such as a radio wave or a wired cable.
- the existing transmission formats include HDMI, SATA, IEEE 1394A / B, USB, etc. for wired communication, and various standards used for wireless LAN (IEEE 802.11), WiMAX, and mobile phones.
- the transmission format used in this embodiment is not particularly limited.
- the playback device 30 may have a configuration for further performing image processing and editing on the LR image pair processed by the re-parallax adjusting unit 330 and a configuration for recording the LR image pair.
- FIG. 11 is a functional block diagram illustrating a configuration of the display device 40 according to the embodiment of the present disclosure.
- the display device 40 according to the embodiment of the present disclosure includes a reading unit 410, a communication processing unit 412, a decoding processing unit 420, a re-parallax adjustment unit 430, and a display unit 440. .
- the reading unit 410 reads a data stream recorded in a format including parallax adjustment metadata from the recording medium 28, and outputs the data stream to the decoding processing unit 320.
- the communication processing unit 412 receives a data stream transmitted from the playback device 30 or the like wirelessly or by wire, and outputs the data stream to the decoding processing unit 320.
- the reading unit 410 and the communication processing unit 412 are examples of a data acquisition unit that acquires parallax adjustment metadata.
- the decode processing unit 420 converts the data stream into an L image, an R image, and parallax adjustment metadata, and outputs the L image, the R image, and the parallax adjustment metadata to the re-parallax adjustment unit 430. Note that when the display unit 440 performs 2D display, the decoding processing unit 420 may output either the L image or the R image and the parallax adjustment metadata to the re-parallax adjustment unit 430.
- the re-parallax adjusting unit 430 adjusts the parallax of the LR image pair again as necessary according to the separately set operation setting, and causes the display unit 440 to display the LR image pair after the parallax adjustment.
- the processing by the re-parallax adjusting unit 430 differs depending on whether the output image is a 2D image or a 3D image.
- the process for outputting a 2D image will be described in “4.2 Image Processing for Display”, and the process for outputting a 3D image will be described in detail in “5.3 Image Display for Display”. To do.
- the re-parallax adjustment unit 430 when the display device 40 does not have the re-parallax adjustment unit 430, the L image and the R image obtained by the decoding processing unit 420 are directly output to the display unit 440. Further, the re-parallax adjustment unit 430 according to the present embodiment also operates as an image extraction unit that extracts an L image or an R image, or a parallax adjustment cancellation unit so that the already performed parallax adjustment is canceled.
- the display unit 440 displays an image input from the re-parallax adjusting unit 430. For example, when the L image and the R image are input from the re-parallax adjusting unit 430, the display unit 440 performs 3D display using the L image and the R image. In addition, when an L image or an R image is input from the re-parallax adjustment unit 430, the display unit 440 performs 2D display using the L image or the R image.
- Image processing for 4.2D display The configurations of the playback device 30 and the display device 40 according to the embodiment of the present disclosure have been described above. Next, image processing for 2D display performed by the re-parallax adjustment unit 430 of the display device 40 will be described in detail. In the following, a process for performing 2D display with an LR image pair that has been subjected to parallax adjustment by LR equal shift will be described. Further, the image processing performed by the re-parallax adjusting unit 430 of the display device 40 can be used for image processing by the re-parallax adjusting unit 330 of the reproducing device 30.
- FIG. 12 is an explanatory diagram showing image processing for 2D display.
- the position of the subject within the angle of view is fixed regardless of the time axis, as shown in FIG. 12A. For this reason, when the image is displayed on the display device 40 or the like, the subject is stationary in the image.
- an L image (which may be an R image) of an LR image pair recorded with parallax adjustment by a two-lens 3D camera such as the imaging device 20 is used as a 2D image
- the subject is stationary.
- the L image is shifted by Xi / 2 in accordance with the parallax adjustment amount Xi (i is an image number corresponding to the frame or field).
- Xi is an image number corresponding to the frame or field
- the re-parallax adjustment unit 430 can improve the adverse effects caused by such parallax adjustment by the processing described below.
- the parallax adjustment amount recorded in the parallax adjustment metadata is equal to the horizontal movement amount or the shift amount of the cutout position at the time of recording.
- the re-parallax adjustment unit 430 cuts out the parallax-adjusted L image from the cut-out start position Yi represented by “ ⁇ Xi / 2” as shown in FIG. 12C.
- the re-parallax adjustment unit 430 performs black padding on an area (right side of the drawing) where the number of horizontal pixels is less than 1920 pixels, as in the image after cropping illustrated in FIG. 1920.
- the re-parallax adjustment unit 430 may set the number of horizontal pixels of the image to 1920 by copying the image at the end instead of filling in black.
- the actual parallax adjustment amount Xi is about plus or minus 100 pixels at the maximum with respect to the number of horizontal pixels 1920, and Xi / 2 is about 50 pixels.
- a black band of about 2% with respect to 1920 pixels has almost no trouble in 2D display.
- the parallax adjustment amount is negative.
- the idea is the same when the parallax adjustment amount is positive.
- the image is cut out from the right side (inside the image) from the horizontal coordinate origin at the time of recording, so that the result includes a black-filled area on the left side.
- FIG. 13 is a flowchart showing an operation for 2D display by the reparity adjustment unit 430.
- FIG. 13 shows an operation example for one LR image pair, when a moving image is a target, the imaging device 20 may repeat the process shown in FIG.
- the reparity adjustment unit 430 extracts the parallax adjustment metadata from the decoded metadata (S604). Subsequently, the re-parallax adjustment unit 430 determines whether the input L image or R image is a parallax-adjusted image based on the parallax adjustment metadata (S608). Then, if the re-parallax adjusting unit 430 determines that the input image has not been parallax-adjusted, the re-parallax adjusting unit 430 displays the input image on the display unit 440 without processing (S612). Note that, when an LR image pair is input to the re-parallax adjustment unit 430, the re-parallax adjustment unit 430 may select the L image or the R image and cause the display unit 440 to display the selected image.
- the re-parallax adjustment unit 430 cancels the parallax adjustment based on the adjustment amount indicated by the parallax adjustment metadata when the input image is parallax adjusted and parallax adjusted by LR equal shift (S616).
- the parallax is readjusted according to the above-described method (S620).
- the re-parallax adjustment unit 430 selects an image on the side that is not horizontally shifted from the L image or the R image, and displays the display unit 440. (S612).
- Image processing for 3D display The image processing for 2D display has been described above. Next, image processing for 3D display performed by the re-parallax adjusting unit 430 of the display device 40 will be described in detail with reference to FIG. Note that the image processing performed by the re-parallax adjustment unit 430 of the display device 40 can also be used for image processing by the re-parallax adjustment unit 330 of the playback device 30.
- FIG. 14 is a flowchart showing an operation for 3D display by the reparity adjustment unit 430.
- FIG. 14 shows an operation example for one LR image pair
- the imaging device 20 may repeat the process shown in FIG. 14 when a moving image is a target.
- the reparity adjustment unit 430 extracts the parallax adjustment metadata from the decoded metadata (S704). Subsequently, the re-parallax adjusting unit 430 determines whether or not to perform the re-parallax adjustment based on the separately set operation setting (S708). Then, when the re-parallax adjustment is not performed, the re-parallax adjustment unit 430 outputs the decoded LR image pair as it is to the display unit 440 (S712).
- the re-parallax adjustment unit 430 determines that the parallax adjustment is to be performed, and if the decoded LR image pair has not been parallax adjusted (S716), as described in Japanese Patent Application Laid-Open No. 2011-55022
- the parallax adjustment amount of the LR image pair is calculated by the algorithm, and the parallax adjustment of the LR image pair is performed (S720).
- the re-parallax adjustment unit 430 determines that the parallax adjustment is performed, and when the decoded LR image pair is parallax-adjusted (S716), whether or not there is no problem even if the parallax adjustment is performed twice. Is determined (S724). If the re-parallax adjustment unit 430 determines that there is no problem even if double parallax adjustment is performed based on separately recorded metadata such as a maker note, for example, it is described in JP 2011-55022 A. The re-parallax adjustment is performed by the algorithm as described above (S720).
- the re-parallax adjustment unit 430 determines that a problem may occur when the parallax adjustment is performed twice, the re-parallax adjustment unit 430 performs any of the following processes according to the separately set operation setting (S728). a) The parallax adjustment is performed again after performing the process of canceling the parallax adjustment of the LR image pair by the method described in “4.2 Image Processing for Display” (S732). b) Without performing re-parallax adjustment, the decoded LR image pair is output to the display unit 440 as it is (S736).
- the above a) or b) can prevent an unexpected video or inappropriate 3D video from being displayed due to double parallax adjustment.
- the maximum parallax adjustment amount that is, the width of the shift amount is unique by a recording device such as the imaging device 20
- data indicating the maximum parallax adjustment amount is also arranged in the parallax adjustment metadata.
- the maximum parallax adjustment amount of the L image (1920 ⁇ 1080) is plus or minus 50 pixels will be considered.
- FIG. 15 is an explanatory diagram showing image clipping according to an application example.
- a black circle H indicates the horizontal coordinate origin before parallax adjustment at the time of recording
- a white circle indicates the horizontal coordinate center (960 pixels from the horizontal coordinate origin, the center of the angle of view, when recording an image of 1920 pixels from the horizontal coordinate origin).
- a broken line area indicates an image area recorded
- a bold line indicates an image area cut out.
- FIG. 15A since the L image is subjected to parallax adjustment of ⁇ 50 pixels, an image region indicated by a broken line from the position of 50 pixels outside (left side) the horizontal coordinate origin H before parallax adjustment is Exists.
- FIG. 15B since the parallax adjustment is not performed on the L image, the horizontal coordinate origin at the time of recording coincides with the horizontal end of the image area indicated by the broken line.
- FIG. 15C since the parallax adjustment of 50 pixels is performed on the L image, there is an image area indicated by a broken line from the position of 50 pixels inside (right side) from the horizontal coordinate origin H before the parallax adjustment.
- the re-parallax adjustment unit 430 cuts out a common and maximum area within the image area indicated by such a broken line.
- this area is a field angle range that exists no matter how the parallax adjustment is performed, so if this area is always cut out, it is not affected by the parallax adjustment, and the horizontal center of the cut-out image is determined. It becomes possible to keep the horizontal coordinate center at the time of recording.
- FIGS. 15A to 15C The cutout range of the image considering such an aspect ratio is shown by a solid line in FIGS. 15A to 15C.
- the horizontal cutout start position is 100 pixels obtained by adding a value (50) for canceling parallax adjustment + an absolute value (50) of the maximum parallax adjustment amount. It is.
- the parallax adjustment amount Xi / 2
- the re-parallax adjustment unit 430 calculates the absolute value of ( ⁇ 1) ⁇ parallax adjustment amount + maximum parallax adjustment amount in the same manner even if the parallax adjustment amount is another value. Can be calculated.
- the re-parallax adjustment unit 430 obtains a common area that can be cut out when the adjustment amount is the maximum left and the maximum right, and the horizontal coordinate center before the parallax adjustment in the area is the horizontal of the image after the extraction. It may be cut out with a uniform size on the left and right with reference to the center of the horizontal coordinate before the parallax adjustment so as to be the center.
- the reparity adjustment unit 430 has a function as an enlargement processing unit that enlarges the image region cut out as described above to a display size of 1920 ⁇ 1080.
- the re-parallax adjustment unit 430 can cut out when the adjustment amount is the maximum left and the maximum right as illustrated in FIG. 16B. Cut out common areas. Then, as illustrated in FIG. 16C, the reparity adjustment unit 430 expands the cut-out image area to the display size.
- the image center before parallax adjustment and the image center at the time of display coincide with each other, so that even if an L image that has been parallax adjusted is used, 2D display without black bands or shaking can be realized.
- the embodiment of the present disclosure it is possible to eliminate the adverse effects caused by the parallax adjustment of the L image and the R image.
- the parallax adjustment performed on the L image or R image can be canceled. It is possible to suppress the shaking of the image.
- various processes using the positional relationship between the L image and the R image before the parallax adjustment can be realized. Further, even when the parallax adjustment is not performed, it is possible to cope with the common parallax adjustment metadata format.
- the use of the parallax adjustment metadata is not limited to the reparity adjustment.
- the parallax adjustment metadata can be used for various processes using the center position and horizontal position of the L image and R image before parallax adjustment.
- each step in the processing of the imaging device 20, the playback device 30, and the display device 40 in this specification does not necessarily have to be processed in time series in the order described as a flowchart.
- each step in the processing of the imaging device 20, the playback device 30, and the display device 40 may be processed in an order different from the order described as the flowchart, or may be processed in parallel.
- the hardware such as the CPU, ROM, and RAM incorporated in the imaging device 20, the playback device 30, and the display device 40 exhibits the same functions as the configurations of the imaging device 20, the playback device 30, and the display device 40 described above. It is also possible to create a computer program for this purpose. A storage medium storing the computer program is also provided.
- a parallax adjustment unit that performs parallax adjustment of the image for the left eye and the image for the right eye obtained by imaging;
- a data processing unit that associates the metadata related to the parallax adjustment with image data including the left-eye image and the right-eye image;
- a parallax adjustment device comprising: (2) The parallax adjustment unit performs the parallax adjustment by shift processing of the left-eye image, shift processing of the right-eye image, or shift processing of both the left-eye image and the right-eye image;
- the parallax adjustment device according to (1) The parallax adjustment device according to (1).
- the parallax adjustment device (4) The parallax adjustment device according to (3), wherein the metadata includes data indicating a shift amount of the left-eye image and a shift amount of the right-eye image. (5) The parallax adjustment device according to (4), wherein when the parallax adjustment is not performed, the data portion for indicating the shift amount in the metadata includes data indicating other information. (6) The metadata includes data indicating a target image in which the parallax adjustment unit has been subjected to the parallax adjustment among the left-eye image and the right-eye image, and data indicating a shift amount of the target image. The parallax adjustment device according to (2).
- the parallax adjustment unit performs the parallax adjustment by shift processing of both the left-eye image and the right-eye image,
- the parallax adjustment device according to (1), wherein the metadata includes data indicating whether or not the parallax adjustment has been performed, and data indicating a shift amount of the left-eye image and the right-eye image.
- a data acquisition unit that acquires image data including a left-eye image and a right-eye image, and metadata related to parallax adjustment for the left-eye image and the right-eye image associated with the image data;
- An image extraction unit that extracts a region of the left-eye image or the right-eye image based on the metadata;
- An image processing apparatus comprising: (9)
- the metadata includes data indicating whether or not the parallax adjustment has been performed on the left-eye image and the right-eye image, The image extraction unit performs the extraction when the metadata indicates that the parallax adjustment has been performed, and performs the extraction when the metadata indicates that the parallax adjustment has not been performed.
- the image processing apparatus includes a shift process of the left-eye image, a shift process of the right-eye image, or a shift process of both the left-eye image and the right-eye image
- the metadata includes data indicating a shift amount of the left-eye image and a shift amount of the right-eye image
- the image extraction unit extracts an area corresponding to a shift amount of the left-eye image or the right-eye image indicated by the metadata from the left-eye image or the right-eye image, (8) Or the image processing apparatus as described in (9).
- the parallax adjustment is a shift process of both the left-eye image and the right-eye image
- the metadata includes data indicating whether or not the parallax adjustment has been performed, and data indicating shift amounts of the left-eye image and the right-eye image
- the image extraction unit extracts an area corresponding to a shift amount of the left-eye image and the right-eye image indicated by the metadata from the left-eye image or the right-eye image, (8) An image processing apparatus according to 1.
- the extraction unit based on the left eye image or the right eye image, from the horizontal length of the left eye image or the right eye image, the shift amount width of the left eye image and the right eye image Extract the region below the horizontal length obtained by subtracting
- the image processing apparatus includes: The image processing apparatus according to (10) or (11), further including an enlargement processing unit that enlarges an area extracted by the image extraction unit.
- a data format comprising metadata relating to parallax adjustment for a left-eye image and a right-eye image obtained by imaging, and image data including the left-eye image and the right-eye image.
- Computer A parallax adjustment unit that performs parallax adjustment of the image for the left eye and the image for the right eye obtained by imaging;
- a data processing unit that associates the metadata related to the parallax adjustment with image data including the left-eye image and the right-eye image;
- Computer A data acquisition unit that acquires image data including a left-eye image and a right-eye image, and metadata related to parallax adjustment for the left-eye image and the right-eye image associated with the image data;
- An image extraction unit that extracts a region of the left-eye image or the right-eye image based on the metadata;
- Imaging device 22 Imaging unit 24 Imaging optical system 26 Imaging element 28 Recording medium 30 Playback device 40
- Display device 210 Image processing unit 220 Parallax adjustment unit 230 Encoding processing unit 240 Recording unit 250 Display unit 310 Reading unit 320 Decoding processing unit 330 Re-parallax Adjustment unit 340 Communication processing unit 410 Reading unit 412 Communication processing unit 420 Decoding processing unit 430 Re-parallax adjustment unit 440 Display unit
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Abstract
Description
1.画像処理システムの構成
2.撮像装置の構成および動作
3.再生装置および表示装置の構成
4.2D表示のための画像処理
5.3D表示のための画像処理
6.応用例
7.むすび
図1は、本開示の実施形態による画像処理システムの構成を示した説明図である。図1に示したように、本開示の実施形態による画像処理システムは、撮像装置20と、再生装置30と、表示装置40と、を備える。
ここで、3D表示の概略を説明する。表示装置40にL画像とR画像が表示され、ユーザの左眼にL画像が見え、ユーザの右眼にR画像が見えている時、L画像とR画像の視差に基づきユーザは画像を立体的に知覚することができる。この点について、図2を参照してより具体的に説明する。
上記のような3D表示のための記録においては、通常、L画像およびR画像のみが記録され、2D表示用の専用の2D画像が記録されることはほとんどない。このため、表示装置は、3D表示のために記録された画像から2D表示を行うために、L画像またはR画像を表示することが一般的である。
図6は、本開示の実施形態による撮像装置20の構成を示した機能ブロック図である。図6に示したように、撮像装置20は、撮像部22Lおよび撮像部22Rと、記録メディア28と、画像処理部210Lおよび画像処理部210Rと、視差調整部220と、エンコード処理部230と、記録部240と、3D表示部250と、を備える。
ここで、エンコード処理部230によるエンコードの過程で得られる視差調整メタデータについて詳細に説明する。視差調整メタデータは、視差調整部220によって行われた視差調整の内容を示すデータであり、以下に説明するように、多様な形態で実現され得る。
01:L画像をXピクセル移動。R画像はオリジナル。
10:R画像をXピクセル移動。L画像はオリジナル。
11:L画像をX/2ピクセル移動。R画像をX/2ピクセル移動。
続いて、図9を参照し、本開示の実施形態による撮像装置20の動作を整理する。
以上、本開示の実施形態による撮像装置20の構成および動作を説明した。続いて、本開示の実施形態による再生装置30および表示装置40の構成を説明する。
図10は、本開示の実施形態による再生装置30の構成を示した機能ブロック図である。図10に示したように、本開示の実施形態による再生装置30は、読出部310と、デコード処理部320と、再視差調整部330と、通信処理部340と、を備える。
図11は、本開示の実施形態による表示装置40の構成を示した機能ブロック図である。図11に示したように、本開示の実施形態による表示装置40は、読出部410と、通信処理部412と、デコード処理部420と、再視差調整部430と、表示部440と、を備える。
以上、本開示の実施形態による再生装置30および表示装置40の構成を説明した。続いて、表示装置40の再視差調整部430により行われる2D表示のための画像処理について詳細に説明する。なお、以下では、LR均等シフトにより視差調整が行われたLR画像ペアで2D表示を行うための処理を説明する。また、表示装置40の再視差調整部430により行われる画像処理は、再生装置30の再視差調整部330による画像処理にも援用可能である。
以上、再視差調整部430による2D表示のための画像処理を説明した。続いて、図13を参照し、再視差調整部430による2D表示のための動作を整理する。
以上、2D表示のための画像処理について説明した。続いて、図14を参照し、表示装置40の再視差調整部430により行われる3D表示のための画像処理について詳細に説明する。なお、表示装置40の再視差調整部430により行われる画像処理は、再生装置30の再視差調整部330による画像処理にも援用可能である。
a)「4.2D表示のための画像処理」で説明した方法によりLR画像ペアの視差調整をキャンセルする処理を行ってから再度視差調整を行う(S732)。
b)再視差調整を行わず、デコードされたLR画像ペアをそのまま表示部440に出力する(S736)
以上、本開示の実施形態を説明した。上記の「4.2D表示のための画像処理」で説明した画像処理によれば、画像端部に黒帯領域が表示される。そこで、応用例として、画面に黒帯領域が表示されないように2D表示を行うための画像処理を説明する。
以上説明したように、本開示の実施形態によれば、L画像およびR画像の視差調整による弊害を解消することが可能である。例えば、本開示の実施形態によれば、視差調整が施されたL画像またはR画像を用いて2D表示を行う場合に、L画像またはR画像に施された視差調整をキャンセルすることができるので、画像の揺れを抑制することが可能である。また、視差調整の内容を示す視差調整メタデータをLR画像ペアと関連付けることにより、視差調整前のL画像とR画像の位置関係を用いる多様な処理を実現することが可能となる。また、視差調整を行わない場合でも、共通の視差調整メタデータのフォーマットを用いて対応することが可能である。
(1)
撮像により得られた左眼用画像および右眼用画像の視差調整を行う視差調整部と、
前記視差調整に関するメタデータを前記左眼用画像および右眼用画像を含む画像データと関連付けるデータ処理部と、
を備える、視差調整装置。
(2)
前記視差調整部は、前記左眼用画像のシフト処理、前記右眼用画像のシフト処理、または、前記左眼用画像および前記右眼用画像の双方のシフト処理により前記視差調整を行う、前記(1)に記載の視差調整装置。
(3)
前記メタデータは、前記視差調整が行われたか否かを示すデータを含む、前記(1)または(2)に記載の視差調整装置。
(4)
前記メタデータは、前記左眼用画像のシフト量、および前記右眼用画像のシフト量を示すデータを含む、前記(3)に記載の視差調整装置。
(5)
前記視差調整が行われない場合、前記メタデータ中のシフト量を示すためのデータ部分は、他の情報を示すデータを含む、前記(4)に記載の視差調整装置。
(6)
前記メタデータは、前記左眼用画像および前記右眼用画像のうちで前記視差調整部により前記視差調整が行われた対象画像を示すデータと、前記対象画像のシフト量を示すデータを含む、前記(2)に記載の視差調整装置。
(7)
前記視差調整部は、前記左眼用画像および前記右眼用画像の双方のシフト処理により前記視差調整を行い、
前記メタデータは、前記視差調整が行われたか否かを示すデータと、前記左眼用画像および前記右眼用画像のシフト量を示すデータを含む、前記(1)に記載の視差調整装置。
(8)
左眼用画像および右眼用画像を含む画像データ、および、前記画像データと関連付けられた、前記左眼用画像および前記右眼用画像に対する視差調整に関するメタデータを取得するデータ取得部と、
前記メタデータに基づいて前記左眼用画像または前記右眼用画像の一領域を抽出する画像抽出部と、
を備える、画像処理装置。
(9)
前記メタデータは、前記左眼用画像および前記右眼用画像に対する前記視差調整が行われたか否かを示すデータを含み、
前記画像抽出部は、前記視差調整が行われたことを前記メタデータが示す場合には前記抽出を行い、前記視差調整が行われなかったことを前記メタデータが示す場合には前記抽出を行わない、前記(8)に記載の画像処理装置。
(10)
前記視差調整は、前記左眼用画像のシフト処理、前記右眼用画像のシフト処理、または、前記左眼用画像および前記右眼用画像の双方のシフト処理を含み、
前記メタデータは、前記左眼用画像のシフト量、および前記右眼用画像のシフト量を示すデータを含み、
前記画像抽出部は、前記左眼用画像または前記右眼用画像から、前記メタデータが示す前記左眼用画像または前記右眼用画像のシフト量に応じた領域を抽出する、前記(8)または(9)に記載の画像処理装置。
(11)
前記視差調整は、前記左眼用画像および前記右眼用画像の双方のシフト処理であり、
前記メタデータは、前記視差調整が行われたか否かを示すデータと、前記左眼用画像および前記右眼用画像のシフト量を示すデータを含み、
前記画像抽出部は、前記左眼用画像または前記右眼用画像から、前記メタデータが示す前記左眼用画像および前記右眼用画像のシフト量に応じた領域を抽出する、前記(8)に記載の画像処理装置。
(12)
前記抽出部は、前記左眼用画像または前記右眼用画像から、前記左眼用画像または前記右眼用画像の水平方向長から前記左眼用画像および前記右眼用画像のシフト量の幅を減じて得られる水平方向長以下の領域を抽出し、
前記画像処理装置は、
前記画像抽出部により抽出された領域を拡大する拡大処理部をさらに備える、前記(10)または(11)に記載の画像処理装置。
(13)
撮像により得られた左眼用画像および右眼用画像に対する視差調整に関するメタデータ、および、前記左眼用画像および右眼用画像を含む画像データからなる、データフォーマット。
(14)
撮像により得られた左眼用画像および右眼用画像の視差調整を行うことと、
前記視差調整に関するメタデータを前記左眼用画像および右眼用画像を含む画像データと関連付けることと、
を含む、視差調整方法。
(15)
左眼用画像および右眼用画像を含む画像データ、および、前記画像データと関連付けられた、前記左眼用画像および前記右眼用画像に対する視差調整に関するメタデータを取得することと、
前記メタデータに基づいて前記左眼用画像または前記右眼用画像の一領域を抽出することと、
を含む、画像処理方法。
(16)
コンピュータを、
撮像により得られた左眼用画像および右眼用画像の視差調整を行う視差調整部と、
前記視差調整に関するメタデータを前記左眼用画像および右眼用画像を含む画像データと関連付けるデータ処理部と、
として機能させるための、プログラム。
(17)
コンピュータを、
左眼用画像および右眼用画像を含む画像データ、および、前記画像データと関連付けられた、前記左眼用画像および前記右眼用画像に対する視差調整に関するメタデータを取得するデータ取得部と、
前記メタデータに基づいて前記左眼用画像または前記右眼用画像の一領域を抽出する画像抽出部と、
として機能させるための、プログラム。
22 撮像部
24 撮像光学系
26 撮像素子
28 記録メディア
30 再生装置
40 表示装置
210 画像処理部
220 視差調整部
230 エンコード処理部
240 記録部
250 表示部
310 読出部
320 デコード処理部
330 再視差調整部
340 通信処理部
410 読出部
412 通信処理部
420 デコード処理部
430 再視差調整部
440 表示部
Claims (13)
- 撮像により得られた左眼用画像および右眼用画像の視差調整を行う視差調整部と、
前記視差調整に関するメタデータを前記左眼用画像および右眼用画像を含む画像データと関連付けるデータ処理部と、
を備える、視差調整装置。 - 前記視差調整部は、前記左眼用画像のシフト処理、前記右眼用画像のシフト処理、または、前記左眼用画像および前記右眼用画像の双方のシフト処理により前記視差調整を行う、請求項1に記載の視差調整装置。
- 前記メタデータは、前記視差調整が行われたか否かを示すデータを含む、請求項1または2に記載の視差調整装置。
- 前記メタデータは、前記左眼用画像のシフト量、および前記右眼用画像のシフト量を示すデータを含む、請求項3に記載の視差調整装置。
- 前記視差調整が行われない場合、前記メタデータ中のシフト量を示すためのデータ部分は、他の情報を示すデータを含む、請求項4に記載の視差調整装置。
- 前記メタデータは、前記左眼用画像および前記右眼用画像のうちで前記視差調整部により前記視差調整が行われた対象画像を示すデータと、前記対象画像のシフト量を示すデータを含む、請求項2に記載の視差調整装置。
- 前記視差調整部は、前記左眼用画像および前記右眼用画像の双方のシフト処理により前記視差調整を行い、
前記メタデータは、前記視差調整が行われたか否かを示すデータと、前記左眼用画像および前記右眼用画像のシフト量を示すデータを含む、請求項1に記載の視差調整装置。 - 左眼用画像および右眼用画像を含む画像データ、および、前記画像データと関連付けられた、前記左眼用画像および前記右眼用画像に対する視差調整に関するメタデータを取得するデータ取得部と、
前記メタデータに基づいて前記左眼用画像または前記右眼用画像の一領域を抽出する画像抽出部と、
を備える、画像処理装置。 - 前記メタデータは、前記左眼用画像および前記右眼用画像に対する前記視差調整が行われたか否かを示すデータを含み、
前記画像抽出部は、前記視差調整が行われたことを前記メタデータが示す場合には前記抽出を行い、前記視差調整が行われなかったことを前記メタデータが示す場合には前記抽出を行わない、請求項8に記載の画像処理装置。 - 前記視差調整は、前記左眼用画像のシフト処理、前記右眼用画像のシフト処理、または、前記左眼用画像および前記右眼用画像の双方のシフト処理を含み、
前記メタデータは、前記左眼用画像のシフト量、および前記右眼用画像のシフト量を示すデータを含み、
前記画像抽出部は、前記左眼用画像または前記右眼用画像から、前記メタデータが示す前記左眼用画像または前記右眼用画像のシフト量に応じた領域を抽出する、請求項8に記載の画像処理装置。 - 前記視差調整は、前記左眼用画像および前記右眼用画像の双方のシフト処理であり、
前記メタデータは、前記視差調整が行われたか否かを示すデータと、前記左眼用画像および前記右眼用画像のシフト量を示すデータを含み、
前記画像抽出部は、前記左眼用画像または前記右眼用画像から、前記メタデータが示す前記左眼用画像および前記右眼用画像のシフト量に応じた領域を抽出する、請求項8に記載の画像処理装置。 - 前記抽出部は、前記左眼用画像または前記右眼用画像から、前記左眼用画像または前記右眼用画像の水平方向長から前記左眼用画像および前記右眼用画像のシフト量の幅を減じて得られる水平方向長以下の領域を抽出し、
前記画像処理装置は、
前記画像抽出部により抽出された領域を拡大する拡大処理部をさらに備える、請求項10に記載の画像処理装置。 - 撮像により得られた左眼用画像および右眼用画像に対する視差調整に関するメタデータ、および、前記左眼用画像および右眼用画像を含む画像データからなる、データフォーマット。
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