US20090315884A1 - Method and apparatus for outputting and displaying image data - Google Patents

Method and apparatus for outputting and displaying image data Download PDF

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Publication number
US20090315884A1
US20090315884A1 US12/479,978 US47997809A US2009315884A1 US 20090315884 A1 US20090315884 A1 US 20090315884A1 US 47997809 A US47997809 A US 47997809A US 2009315884 A1 US2009315884 A1 US 2009315884A1
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Prior art keywords
image data
perspective image
perspective
additional information
unit
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Inventor
Dae-jong LEE
Hyun-kwon Chung
Kil-soo Jung
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Priority to US12/479,978 priority Critical patent/US20090315884A1/en
Assigned to SAMSUNG ELECTRONICS CO., LTD. reassignment SAMSUNG ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHUNG, HYUN-KWON, JUNG, KIL-SOO, LEE, DAE-JONG
Publication of US20090315884A1 publication Critical patent/US20090315884A1/en
Abandoned legal-status Critical Current

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Definitions

  • aspects of the present invention relate to methods and apparatuses to output and display image data.
  • an image may be generated as a 3D image.
  • a base image and a depth image are stored in a storage space.
  • a user reproduces 3D images by processing the base image and the depth image by using an image outputting device supporting reproduction of 3D images.
  • such a method is unlikely to create an image as a 3D image. That is, in most cases, images are created as 2D images.
  • technologies to reproduce 3D images by processing such 2D images are being used.
  • aspects of the present invention provide methods and apparatuses to output and to display three-dimensional (3D) images.
  • a method of outputting 3D image data including: generating first-perspective image data and second-perspective image data to display the 3D image by converting a same two-dimensional (2D) image data; generating additional information indicating a relationship between the first-perspective image data and the second-perspective image data; and outputting the first-perspective image data, the second-perspective image data, and the additional information.
  • the additional information may include pair information indicating that the first-perspective image data and the second-perspective image data are paired image data generated by converting the same 2D image data.
  • the first-perspective image data may be left-perspective image data
  • the second-perspective image data may be right-perspective image data
  • the additional information may include perspective information indicating that the first-perspective image data is the left-perspective image data, and the second-perspective image data is the right-perspective image data.
  • a method of displaying 3D image data including: receiving first-perspective image data and second-perspective image data, which are generated by converting a same 2D image data and are to display a 3D image; receiving additional information indicating a relationship between the first-perspective image data and the second-perspective image data; and displaying the first-perspective image data and the second-perspective image data based on the additional information.
  • the additional information may include pair information indicating that the first-perspective image data and the second-perspective image data are paired image data generated by converting the same 2D image data.
  • the first-perspective image data may be left-perspective image data
  • the second-perspective image data may be right-perspective image data
  • the additional information may include perspective information indicating that the first-perspective image data is the left-perspective image data, and the second-perspective image data is the right-perspective image data.
  • the first-perspective image data may be stored in a first buffer, of a plurality of buffers classified according to a predetermined standard
  • the second-perspective image data may be stored in a second buffer, of the plurality of buffers.
  • the first-perspective image data and the second-perspective image data may be repeatedly displayed for a predetermined number of times.
  • the first-perspective image data and the second-perspective image data when the first-perspective image data and the second-perspective image data have been repeatedly displayed for the predetermined number of times, the first-perspective image data and the second-perspective image data may be deleted from the first and second buffers, respectively.
  • an image data outputting device including: a generating unit to generate first-perspective image data and second-perspective image data to display a 3D image by converting a same 2D image data; an adding unit to add additional information indicating a relationship between the first-perspective image data and the second-perspective image data to the first-perspective image data and/or the second-perspective image data; and an outputting unit to output the first-perspective image data and the second-perspective image data.
  • an image data displaying device including: a receiving unit to receive first-perspective image data and second-perspective image data, which are generated by converting a same 2D image data and are to display a 3D image, and to receive additional information indicating a relationship between the first-perspective image data and the second-perspective image data; and a displaying unit to display the first-perspective image data and the second-perspective image data based on the additional information.
  • a method of outputting three-dimensional (3D) image data including: generating first-perspective image data and second-perspective image data to display a 3D image by converting a same two-dimensional (2D) image data; generating additional information indicating a relationship between the first-perspective image data and the second-perspective image data; and displaying the first-perspective image data and the second-perspective image data based on the additional information.
  • an image data outputting device including: a generating unit to generate first-perspective image data and second-perspective image data to display a three-dimensional (3D) image by converting a same two-dimensional (2D) image data; and a displaying unit to display the first-perspective image data and the second-perspective image data based on the additional information indicating a relationship between the first-perspective image data and the second-perspective image data.
  • an image data outputting system including: an image data outputting device including: a generating unit to generate first-perspective image data and second-perspective image data to display a three-dimensional (3D) image by converting a same two-dimensional (2D) image data, an adding unit to add additional information indicating a relationship between the first-perspective image data and the second-perspective image data to the first-perspective image data and/or the second-perspective image data, and an outputting unit to output the first-perspective image data and the second-perspective image data; and an image data displaying device including: a receiving unit to receive the first-perspective image data, the second-perspective image data, and the additional information, and a displaying unit to display the first-perspective image data and the second-perspective image data based on the additional information.
  • an image data outputting device including: a generating unit to generate first-perspective image data and second-perspective image data to display a three-dimensional (3D) image by
  • a method of outputting three-dimensional (3D) image data including: generating additional information indicating a relationship between first-perspective image data and second-perspective image data that are generated from a same two-dimensional (2D) image data to display a 3D image.
  • FIG. 1 is a block diagram of an image data outputting device according to an embodiment of the present invention
  • FIG. 2A is a diagram showing a detailed configuration of the image data outputting device shown in FIG. 1 ;
  • FIG. 2B is a diagram showing an example wherein an image data outputting unit according to an embodiment of the present invention outputs 3D image data to which additional information is added;
  • FIG. 2C is a diagram showing another example wherein the image data outputting unit outputs 3D image data to which additional information is added;
  • FIG. 3 is a block diagram of the image data displaying device according to an embodiment of the present invention.
  • FIG. 4 is a block diagram of an image data displaying device according to another embodiment of the present invention.
  • FIG. 5 is a diagram showing an example of displaying 3D image data by using the image data displaying device according to an embodiment of the present invention
  • FIGS. 6A to 6C are diagrams of a storage unit within the image data displaying device according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of a method of outputting image data according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of a method of displaying image data according to an embodiment of the present invention.
  • FIG. 1 is a block diagram of an image data outputting device 100 according to an embodiment of the present invention.
  • the image data outputting device 100 includes a generating unit 110 , an adding unit 120 , and an outputting unit 130 .
  • the image data outputting device 100 can be a transmission device, a data recorder that records the data on a recording medium, a workstation, a desktop computer, a notebook computer, etc., and can be implemented using one or more computers and/or processors whose functions are executed using software/firmware.
  • the generating unit 110 generates three-dimensional (3D) image data by converting two-dimensional (2D) image data into 3D image data.
  • 2D image data is image data used to reproduce 2D images
  • 3D image data is image data used to reproduce 3D images.
  • the generating unit 110 converts 2D image data and generates left-perspective image data and right-perspective image data.
  • the left-perspective image data is image data for a left eye of a viewer
  • the right-perspective image data is image data for a right eye of the viewer.
  • the generating unit 110 converts 2D image data and generates three or more pieces of image data in different perspectives.
  • a stereoscopic image is being reproduced and descriptions thereof will focus on left-perspective image data, though it is understood that aspects of the present invention are not limited thereto. That is, aspects of the present invention, as described below, can also be applied to right-perspective image data, and to a case where a multi-perspective image is reproduced in three or more perspectives.
  • the adding unit 120 adds additional information to at least one piece of generated 3D image data.
  • the adding unit 120 may add additional information to each piece of generated 3D image data.
  • additional information is information indicating relationships among 3D image data generated by the generating unit 110 converting the same 2D image data, and may be in any format.
  • pair information and/or perspective information may be included in additional information.
  • Pair information is information indicating that left-perspective image data and right-perspective image data are a pair when the left-perspective image data and the right-perspective image data are generated by the generating unit 110 converting the same 2D image data.
  • Perspective information is information indicating whether an item of the generated 3D image data is left-perspective image data or right-perspective image data.
  • the adding unit 120 may record the pair information and/or the perspective information to a plurality of bit strings.
  • the adding unit 120 may record the pair information in upper 4-bits of 8-bits existing in a predetermined region of 3D image data, and/or may record the perspective information in lower 4-bits of the 8-bits, though it is understood that aspects of the present invention are not limited thereto.
  • the adding unit 120 may record the pair information in the lower 4-bits of 8-bits existing in a predetermined region of 3D image data, and/or may record the perspective information in the upper 4-bits of the 8-bits.
  • Pair information is information to indicate 2D image data used to generate 3D image data, and a plurality of pieces of 3D image data generated by converting the same 2D image data may have the same pair information.
  • Types of pair information may vary according to various embodiments. For example, according to an embodiment of the present invention, pair information may be classified into 16 types according to sequences of 2D image data used to generate 3D image data.
  • pair information of 3D image data generated by the generating unit 110 converting first 2D image data may have a value “0000”
  • pair information of 3D image data generated by the generating unit 110 converting second 2D image data may have a value “0001.”
  • pair information of 3D image data generated by the generating unit 110 converting sixteenth 2D image data may have a value “1111”
  • pair information of 3D image data generated by the generating unit 110 converting seventeenth 2D image data may have a value “0000” again, though it is understood that other embodiments are not limited thereto.
  • the pair information may be classified into two types depending on whether 2D image data used to generate 3D image data are even-numbered 2D image data or odd-numbered 2D image data.
  • 3D image data generated by the generating unit 110 converting even-numbered 2D image data may have a value “0000”
  • 3D image data generated by the generating unit 110 converting odd-numbered 2D image data may have a value “1111.”
  • Perspective information may vary according to a number of pairs of 3D image data to be generated by the generating unit 110 converting 2D image data. If stereoscopic images are to be reproduced, perspective information may be limited to two types. For example, perspective information of left-perspective image data may have a value “0000,” and perspective information of right-perspective image data may have a value “1111.” Thus, additional information regarding left-perspective image data generated by the generating unit 110 converting even-numbered 2D image data may include a bit string having a value “00000000,” and additional information regarding right-perspective image data generated by the generating unit 110 converting the same 2D image data may include a bit string having a value “00001111.” In this regard, additional information regarding left-perspective image data generated by the generating unit 110 converting odd-numbered 2D image data may include a bit string having a value “11110000,” and additional information regarding right-perspective image data generated by the generating unit 110 converting the same 2D image data may include a bit string
  • the outputting unit 130 transmits the 3D image data, to which the additional information is added by the adding unit 120 , to an image data displaying device 300 described below.
  • the generating unit 110 in the image data outputting device 100 generates 3D image data by converting 2D image data and generates additional information indicating relationships among the 3D image data.
  • the generating unit 110 may not generate the additional information. Instead, the generating unit 110 or the adding unit 120 may obtain additional information generated in advance and/or externally and transmit the additional information to the image data displaying device 300 together with 3D image data.
  • the image data outputting device 100 may further include a receiving unit (not shown).
  • the receiving unit receives metadata including additional information from an external server via a network system and/or from a broadcasting server that provides a cable broadcasting service via a cable network, though it is understood that aspects of the present invention are not limited thereto.
  • the receiving unit may receive the metadata from an external storage device (such as a server) via any wired and/or wireless connection (such as USB, Bluetooth, Infrared, etc.).
  • the image data outputting device 100 may further include a reading unit (not shown).
  • 2D image data and/or 3D image data generated by the generating unit 110 converting 2D image data is recorded in a recording medium.
  • metadata including additional information may also be recorded on the recording medium.
  • the reading unit may read the recording medium, obtain metadata therefrom, and transmit the metadata to the image data displaying device 300 together with the 3D image data.
  • FIG. 2A is a diagram showing a detailed configuration of the image data outputting device 100 shown in FIG. 1 .
  • a decoder 210 decodes input 2D image data.
  • the decoded 2D image data is transmitted to the generating unit 110 .
  • the generating unit 110 generates a 3D image data pair, which is to be used to generate 3D images, by converting the input 2D image data.
  • the adding unit 120 adds additional information that indicates relationships among a plurality of 3D image data generated by the generating unit 110 converting the same 2D image data, to at least one of the 3D image data.
  • the additional information may include pair information and/or perspective information.
  • the adding unit 120 includes a perspective determining unit 122 and an information recording unit 124 .
  • the perspective determining unit 122 determines perspectives of a generated 3D image data pair. That is, the perspective determining unit 122 determines which of 3D image data items is left-perspective image data and which is right-perspective image data.
  • the information recording unit 124 adds pair information that indicates left-perspective image data and right-perspective image data from among a 3D image data pair generated by using the same 2D image data, and adds perspective information to each of the image data.
  • Pair information and perspective information may be generated as metadata.
  • aspects of the present invention are not limited thereto.
  • the pair information and/or the perspective information may be added by being recorded in a predetermined region within 3D image data.
  • the outputting unit 130 outputs a 3D image data pair to which the pair information and the perspective information are added by the information recording unit 124 . If the outputting unit 130 outputs 3D image data at a transmitting rate of 60 Hz, it takes 1/30 of a second to completely output a 3D image data pair.
  • FIG. 2B is a diagram showing an example wherein an image data outputting unit according to an embodiment of the present invention outputs 3D image data to which additional information 231 is added.
  • the additional information 231 is output as metadata regarding 3D image data 232 and 233 .
  • an output sequence may vary according to embodiments.
  • the output sequence shown in FIG. 2B is the additional information 231 , left-perspective image data 232 , and right-perspective image data 233 .
  • FIG. 2C is a diagram showing another example wherein the image data outputting unit outputs 3D image data to which additional information is added.
  • additional pieces of information 242 and 244 are recorded in predetermined regions of 3D image data 241 and 243 , respectively.
  • the additional information 242 regarding left-perspective image data 241 is recorded in the left-perspective image data 241
  • the additional information 244 regarding right-perspective image data 243 is recorded in the right-perspective image data 243 .
  • a sequence of outputting 3D image data may vary according to embodiments.
  • the 3D image data is output in the sequence of the left-perspective image data 241 followed by the right-perspective image data 243 .
  • FIG. 3 is a block diagram of the image data displaying device 300 according to an embodiment of the present invention.
  • the image data displaying device 300 includes a receiving unit 310 , an extracting unit 320 , and a displaying unit 330 .
  • the image data displaying device 300 can be a workstation, a desktop computer, a notebook computer, a portable multimedia player, a television, a set-top box, a reproducing device that reads the image data from a medium, etc., and can be implemented using one or more computers and/or processors whose functions are executed using software/firmware.
  • the receiving unit 310 receives 3D image data from the image data outputting device 100 .
  • the received 3D image data includes additional information indicating relationships among 3D image data generated by converting the same 2D image data.
  • the additional information includes pair information and/or perspective information.
  • Pair information is information indicating that left-perspective image data and right-perspective image data generated by the generating unit 110 converting the same 2D image data are a 3D image data pair.
  • Left-perspective image data and right-perspective image data having the same pair information can be determined as a 3D image data pair.
  • Perspective information is information indicating whether 3D image data is left-perspective image data or right-perspective image data.
  • the extracting unit 320 extracts the additional information from the received 3D image data.
  • the displaying unit 330 displays the 3D image data based on the additional information. More particularly, whether to display 3D image data is determined based on the pair information and the perspective information. If it is determined to display the 3D image data, a 3D image data display sequence is determined, and the displaying unit 330 displays the 3D image data according to the determined sequence. An example of displaying 3D image data will be described in detail later with reference to FIG. 5 .
  • FIG. 4 is a block diagram of an image data displaying device 400 according to another embodiment of the present invention.
  • the image data displaying device 400 includes a receiving unit 410 , an extracting unit 420 , a control unit 430 , a storage unit 440 , and a displaying unit 450 .
  • operations of the receiving unit 410 , the extracting unit 420 , and the displaying unit 450 are similar to those of the receiving unit 310 , the extracting unit 320 , and the displaying unit 330 shown in FIG. 3 , and thus detailed descriptions thereof will be omitted here.
  • the control unit 430 controls the image data displaying device 400 to store, to delete, and/or to display 3D image data, based on additional information.
  • the storage unit 440 includes a plurality of buffers 442 through 448 , which are defined according to a predetermined standard. The predetermined standard may vary according to embodiments. For example, the buffers 442 through 448 may be defined based on the perspective information and/or the pair information that are added to the 3D image data.
  • the storage unit 440 which is controlled by the control unit 430 , stores 3D image data in one or more of the plurality of buffers, transmits stored 3D image data to the displaying unit 450 , and/or deletes stored 3D image data.
  • the receiving unit 410 receives 3D image data from the image data outputting device 100 .
  • the received 3D image data is image data generated by the generating unit 110 converting 2D image data, and may include additional information.
  • the additional information is information indicating relationships among 3D image data generated by the generating unit 110 converting the same 2D image data, and may include pair information and/or perspective information.
  • the pair information and the perspective information are indicated by using 8-bit strings within the 3D image data, wherein upper 4-bits of an 8-bit string indicates the pair information and lower 4-bits of the 8-bit string indicates the perspective information.
  • the pair information may indicate whether the 3D image data is generated by the generating unit 110 converting even-numbered 2D image data or odd-numbered 2D image data. For example, if a value of the upper 4-bits is “0000,” the 3D image data is generated by the generating unit 110 converting even-numbered 2D image data. In contrast, if the value of the upper 4-bits is “1111,” the 3D image data is generated by the generating unit 110 converting odd-numbered 2D image data.
  • the perspective information may indicate whether 3D image data is left-perspective image data or right-perspective image data. For example, if a value of the lower 4-bits is “0000,” the 3D image data is left-perspective image data. If the value of the lower 4-bits is “1111,” the 3D image data is right-perspective image data.
  • the extracting unit 420 extracts the pair information and the perspective information from the 3D image data. For example, as described above, if the extracted pair information and perspective information is “00000000,” the 3D image data is left-perspective image data generated by converting even-numbered 2D image data. Hereinafter, a 3D image data pair generated by converting even-numbered 2D image data will be referred as a first pair, and a 3D image data pair generated by converting odd-numbered 2D image data will be referred as a second pair.
  • the control unit 430 selects a buffer, to which 3D image data is to be stored, based on the pair information and the perspective information.
  • the storage unit 440 comprises four buffers 442 , 444 , 446 , and 448 .
  • a first buffer 442 stores left-perspective image data of the first pair
  • a second buffer 444 stores right-perspective image data of the first pair
  • a third buffer 446 stores left-perspective image data of the second pair
  • a fourth buffer 448 stores right-perspective image data of the second pair.
  • 3D image data having additional information indicated by the 8-bit string “00000000” is stored in the first buffer 442 .
  • aspects of the present invention are not limited to the four buffers 442 through 448 classified by the pair information and the perspective information. According to other aspects, more or less buffers may be provided according to other classification schemes. For example, only two buffers may be provided, classified by the pair information or the perspective information.
  • control unit 430 controls the storage unit 440 such that the 3D image data stored in the first buffer 442 is transmitted to the displaying unit 450 .
  • the displaying unit 450 may display the 3D image data in a sequence of displaying left-perspective image data of a pair and successively displaying right-perspective image data of the same pair or vice versa.
  • the control unit 430 controls the display unit 450 and the storage unit 440 such that the 3D image data is repeatedly displayed a predetermined number of times and is deleted from a buffer 442 , 444 , 446 , or 448 . Displaying and buffering the 3D image data will be described in detail later with reference to FIGS. 5 , 6 A, and 6 B.
  • the displaying unit 450 displays the transmitted 3D image data.
  • a conventional image data outputting device generates 3D image data by converting 2D image data and transmits the 3D image data to an image data displaying device without adding additional information, such as pair information and/or perspective information.
  • An image data displaying device alternately displays left-perspective image data and right-perspective image data in a sequence that the 3D image data is received.
  • a user watches left-perspective image data via his or her left eye and watches right-perspective image data via his or her right eye by using an auxiliary device to watch 3D images (e.g., 3D glasses or goggles).
  • a conventional method enables a user to watch 3D images in the case where 3D image data is sequentially transmitted and displayed.
  • 3D image data is not sequentially transmitted or some pieces of 3D image data are not transmitted and/or displayed due, for example, to a power failure, a user cannot watch the 3D images.
  • power supplied to an image data displaying device temporarily fails, and left-perspective image data is received again when power supply to the image data displaying device is recovered.
  • 3D image data does not include perspective information, and thus the image data displaying device cannot determine whether the newly received 3D image data is left-perspective image data or right-perspective image data. Therefore, without separate synchronization, the image data displaying device may determine left-perspective image data as right-perspective image data.
  • a user watches left-perspective image data via his or her right eye and right-perspective image data via his or her left eye, and thus the 3D effect cannot be sufficiently experienced.
  • the image data displaying device 300 , 400 uses perspective information included in 3D image data such that left-perspective image data is viewed via the left eye and right-perspective image data is viewed via the right eye. Thus, a user can watch 3D images without distortion.
  • pair information is not included in conventional 3D image data.
  • the image data displaying device 300 , 400 may not be able to display both left-perspective image data and right-perspective image data, and the image data displaying device 400 may only partially display a 3D image data pair and then display a next pair. In this case, the 3D effect cannot be sufficiently experienced by a user due to overlapping of images.
  • the image data displaying device 300 , 400 according to aspects of the present invention guarantees the display of both left-perspective image data and right-perspective image data by using pair information included in 3D image data. Thus, a user can watch natural 3D images.
  • FIG. 5 is a diagram showing an example of displaying 3D image data by using the image data displaying device 400 according to an embodiment of the present invention.
  • 3D image data output from the image data outputting device 100 according to an embodiment of the present invention are shown in chronological order in the lower part of FIG. 5 .
  • the image data outputting device 100 outputs 3D image data at a rate of 60 Hz, the unit of time is set to 1/60 of a second.
  • 3D image data includes pair information and perspective information.
  • pair information is indicated by an upper bit between two bits included in the 3D image data
  • perspective information is indicated by a lower bit.
  • 3D image data where a bit indicating pair information (i.e., the upper bit) is 0 is generated by using even-numbered 2D image data
  • 3D image data where a bit indicating pair information is 1 is generated by using odd-numbered 2D image data.
  • 3D image data where a bit indicating perspective information (i.e., the lower bit) is 0 is left-perspective image data
  • 3D image data where a bit indicating perspective information is 1 is right-perspective image data.
  • 3D image data 501 is output. In the 3D image data 501 , both a bit indicating pair information and a bit indicating perspective information are 0. Thus, it is clear that the 3D image data 501 is left-perspective image data generated by using even-numbered 2D image data.
  • 3D image data 502 is output. In the 3D image data 502 , a bit indicating pair information is 0, and a bit indicating perspective information is 1. Thus, it is clear that the 3D image data 502 is right-perspective image data generated by using even-numbered 2D image data. Furthermore, it is clear that the 3D image data 501 and the 3D image data 502 are paired image data, as the 3D image data 501 and the 3D image data 502 have the same pair information, have different perspective information, and are transmitted successively.
  • 3D image data 503 is output.
  • a bit indicating pair information is 1, and a bit indicating perspective information is 0. Therefore, it is clear that the 3D image data 503 is left-perspective image data generated by using odd-numbered 2D image data. Furthermore, since pair information of the 3D image data 502 and 503 are different from each other, it is clear that the 3D image data 502 and the 3D image data 503 are not paired image data.
  • 3D image data displayed by the image data displaying device 300 , 400 according to aspects of the present invention are shown in chronological order in the upper part of FIG. 5 .
  • the 3D image data 501 is received from the image data outputting device 100 , and the received 3D image data 501 is stored in the storage unit 440 .
  • the 3D image data 502 is received from the image data outputting device 100 , and the received 3D image data 502 is stored in the storage unit 440 .
  • the 3D image data 503 is received from the image data outputting device 100 , and the received 3D image data 503 is stored in the storage unit 440 .
  • the image data displaying device 400 displays stored left-perspective image data (that is, the 3D image data 501 ).
  • no 3D image data is received from the image data outputting device 100 , as the 3D image data in the present embodiment is received every 1/60 of a second.
  • the image data displaying device 400 displays stored right-perspective image data (that is, the 3D image data 502 ).
  • received image data has to be displayed continuously at a point of time when no image data is received from the image data outputting device 100 . Therefore, a 3D image data pair is displayed every 1/30 of a second.
  • stored 3D image data is used in the present embodiment, and thus an image data pair can be displayed every 1/60 of a second.
  • 3D image data 504 is received from the image data outputting device 100 , and the received 3D image data 504 is stored in the storage unit 440 .
  • the image data displaying device 400 displays the 3D image data 501 . Since the 3D image data 501 is repeatedly displayed twice, the 3D image data 501 is deleted from the storage unit 440 .
  • no 3D image data is received from the image data outputting device 100 .
  • the image data displaying device 400 displays the 3D image data 502 . Since the 3D image data 502 is repeatedly displayed twice, the 3D image data 502 is deleted from the storage unit 440 .
  • the image data displaying device 400 displays one image data every 1/60 of a second. Accordingly, in the case of displaying 2D image data, it takes 1/60 seconds to display a scene. However, in the case of displaying 3D image data, it takes 2/60 of a second to display a scene, because a user can watch a scene after two pieces of 3D image data are displayed. However, images appear more natural to a user when a scene is displayed every 1/60 of a second. Thus, 3D images displayed by the conventional image data displaying device do not seem natural to a user, compared to those displayed according to aspects of the present invention.
  • the image data displaying device 300 , 400 classifies and stores received 3D image data by using a plurality of buffers, and repeatedly displays 3D image data a predetermined number of times by using stored 3D image data.
  • a 3D image data pair can be displayed every 1/60 of a second. Therefore, a user can watch natural 3D images.
  • FIGS. 6A and 6B are diagrams of the storage unit 440 of the image data displaying device 400 according to an embodiment of the present invention.
  • the storage unit 440 of the image data displaying device 400 includes the first buffer 442 , the second buffer 444 , the third buffer 446 , and the fourth buffer 448 .
  • the first buffer 442 stores left-perspective image data of the first pair
  • the second buffer 444 stores right-perspective image data of the first pair
  • the third buffer 446 stores left-perspective image data of the second pair
  • the fourth buffer 448 stores right-perspective image data of the second pair.
  • 3D image data where a bit indicating pair information is 0 is 3D image data of the first pair
  • 3D image data where a bit indicating pair information is 1 is 3D image data of the second pair.
  • the 3D image data 501 is received from the image data outputting device 100 , and the received 3D image data 501 is stored in the storage unit 440 .
  • a bit indicating pair information is 0, and a bit indicating perspective information is also 0.
  • the 3D image data 501 is stored in the first buffer 442 .
  • no data is received from the image data outputting device 100 .
  • the 3D image data 502 is received from the image data outputting device 100 , and the received 3D image data 502 is stored in the storage unit 440 .
  • a bit indicating pair information is 0, and a bit indicating perspective information is 1.
  • the 3D image data 502 is stored in the second buffer 444 .
  • no data is received from the image data outputting device 100 .
  • the 3D image data 503 is received from the image data outputting device 100 , and the received 3D image data 503 is stored in the storage unit 440 .
  • a bit indicating pair information is 1, and a bit indicating perspective information is 0.
  • the 3D image data 503 is stored in the third buffer 446 .
  • the 3D image data 501 stored in the first buffer 442 is output to the displaying unit 450 .
  • the 3D image data 502 stored in the second buffer 444 is output to the displaying unit 450 .
  • the 3D image data 504 is received from the image data outputting device 100 , and the received 3D image data 504 is stored in the storage unit 440 .
  • a bit indicating pair information is 1, and a bit indicating perspective information is 1.
  • the 3D image data 504 is stored in the fourth buffer 448 .
  • the 3D image data 501 stored in the first buffer 442 is output to the displaying unit 450 .
  • the 3D image data 501 stored in the first buffer 442 is displayed twice, the 3D image data 501 is deleted from the first buffer 442 .
  • no data is received from the image data outputting device 100 .
  • the 3D image data 502 stored in the second buffer 444 is output to the displaying unit 450 . Since the 3D image data 502 stored in the second buffer 444 is displayed twice, the 3D image data 502 is deleted from the second buffer 444 .
  • the 3D image data 505 is received from the image data outputting device 100 , and the received 3D image data 505 is stored in the storage unit 440 .
  • a bit indicating pair information is 0, and a bit indicating perspective information is also 0.
  • the 3D image data 505 is stored in the third buffer 442 .
  • the 3D image data 503 stored in the third buffer 444 is output to the displaying unit 450 .
  • the 3D image data 504 stored in the fourth buffer 448 is output to the displaying unit 450 .
  • the 3D image data 506 is received from the image data outputting device 100 , and the received 3D image data 506 is stored in the storage unit 440 .
  • a bit indicating pair information is 0, and a bit indicating perspective information is 1.
  • the 3D image data 506 is stored in the second buffer 444 .
  • the 3D image data 503 stored in the third buffer 446 is output to the displaying unit 450 .
  • the 3D image data 503 stored in the third buffer 446 is displayed twice, the 3D image data 503 is deleted from the third buffer 446 .
  • no data is received from the image data outputting device 100 .
  • the 3D image data 504 stored in the fourth buffer 448 is output to the displaying unit 450 . Since the 3D image data 504 stored in the fourth buffer 448 is displayed twice, the 3D image data 504 is deleted from the fourth buffer 448 .
  • an image data outputting rate of the image data outputting device 100 may be less than or greater than 60 Hz.
  • the image data outputting device 100 may still be controlled to display a 3D image data pair every 1/60 of a second by adjusting the number of times 3D image data is repeatedly displayed (i.e., adjusting the number of times to be greater than two).
  • both left-perspective image data 501 and 503 and right-perspective image data 502 and 504 of a same pair are stored, and stored 3D image data 501 and 502 is displayed as soon as left-perspective image data 503 of a next pair is received.
  • stored left-perspective image data 501 may be displayed from when a pair of left-perspective image data and right-perspective image data 503 and 504 are received ( 2/60 of a second).
  • FIG. 7 is a flowchart of a method of outputting image data according to an embodiment of the present invention.
  • first-perspective image data and second-perspective image data to display a 3D image are generated in operation S 710 .
  • the first-perspective image data and the second-perspective image data are generated by converting the same 2D image data.
  • Additional information indicating relationships between the generated first-perspective image data and the generated second-perspective image data (operation S 710 ) is generated, and the generated additional information is added to the first-perspective image data and/or the second-perspective image data in operation S 720 .
  • the additional information may be added to both the first-perspective image data and the second-perspective image data, or just one of the first-perspective image data and the second-perspective image data.
  • the additional information may include pair information that indicates that the first-perspective image data and the second-perspective image data are an image data pair generated by converting the same 2D image data.
  • the additional information may additionally or alternatively include perspective information that indicates whether each of the first-perspective image data and the second-perspective image data is left-perspective image data or right-perspective image data.
  • the pair information and the perspective information may be recorded within the first-perspective image data and the second-perspective image data.
  • the pair information may be recorded by using an upper 4-bits of 8-bits in a predetermined region of the first-perspective image data and the second-perspective image data, and the perspective information may be recorded by using a lower 4-bits of the 8-bits.
  • the first-perspective image data and the second-perspective image data, to which additional information is added, are output in operation S 730 .
  • FIG. 8 is a flowchart of a method of displaying image data according to an embodiment of the present invention.
  • first-perspective image data and second-perspective image data to display a 3D image are received in operation S 810 .
  • the first-perspective image data and the second-perspective image data are generated by using the same 2D image data.
  • the first-perspective image data and the second-perspective image data include additional information.
  • the additional information is information indicating relationships among 3D image data generated by converting the same 2D image data, and may include pair information and/or perspective information.
  • Pair information is information indicating that first-perspective image data and second-perspective image data, generated by converting the same 2D image data, are paired image data.
  • Perspective information is information indicating whether each of the first-perspective image data and the second-perspective image data is left-perspective image data or right-perspective image data. If the first-perspective image data is left-perspective image data, the second-perspective image data is right-perspective image data. If the first-perspective image data is right-perspective image data, the second-perspective image data is left-perspective image data.
  • the additional information is obtained from the first-perspective image data and the second-perspective image data in operation S 820 .
  • the additional information may either be transmitted after being included in the first-perspective image data and/or the second-perspective image data, or be separately transmitted. In the case where the additional information is separately transmitted, the additional information may be separately received from an external server or an image data outputting device 100 .
  • the first-perspective image data and the second-perspective image data are displayed based on the additional information in operation S 830 .
  • displaying the first-perspective image data will be described in detail under an assumption that the additional information includes pair information and perspective information.
  • the received first-perspective image data is stored based on the pair information and perspective information.
  • the first-perspective image data may be stored in a first buffer 442 in which left-perspective image data of a first pair is stored, a second buffer 444 in which right-perspective image data of the first pair is stored, a third buffer 446 in which left-perspective image data of a second pair is stored, and a fourth buffer 448 in which right-perspective image data of the second pair is stored, as illustrated in FIG. 4 .
  • the first-perspective image data and the second-perspective image data are both stored in the buffers, the first-perspective image data and the second-perspective image data are sequentially displayed. At this point, the first-perspective image data and the second-perspective image data are repeatedly displayed a predetermined number of times, and are deleted from the buffers after being repeatedly displayed the predetermined number of times.
  • aspects of the present invention can also be written as computer programs and can be implemented in general-use or specific-use digital computers that execute the programs using a computer-readable recording medium.
  • Examples of the computer-readable recording medium include magnetic storage media (e.g., ROM, floppy disks, hard disks, etc.) and optical recording media (e.g., CD-ROMs, or DVDs).
  • aspects of the present invention may also be realized as a data signal embodied in a carrier wave and comprising a program readable by a computer and transmittable over the Internet.

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US12/490,589 Abandoned US20090315977A1 (en) 2008-06-24 2009-06-24 Method and apparatus for processing three dimensional video data
US12/556,699 Expired - Fee Related US8488869B2 (en) 2008-06-24 2009-09-10 Image processing method and apparatus
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