WO2010150554A1 - 立体視画像表示装置 - Google Patents
立体視画像表示装置 Download PDFInfo
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- WO2010150554A1 WO2010150554A1 PCT/JP2010/004243 JP2010004243W WO2010150554A1 WO 2010150554 A1 WO2010150554 A1 WO 2010150554A1 JP 2010004243 W JP2010004243 W JP 2010004243W WO 2010150554 A1 WO2010150554 A1 WO 2010150554A1
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- image
- display
- pointer
- parallax
- stereoscopic image
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0481—Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
- G06F3/04815—Interaction with a metaphor-based environment or interaction object displayed as three-dimensional, e.g. changing the user viewpoint with respect to the environment or object
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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
-
- 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
- H04N13/30—Image reproducers
- H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
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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
- H04N13/398—Synchronisation thereof; Control thereof
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/02—Handling of images in compressed format, e.g. JPEG, MPEG
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2370/00—Aspects of data communication
- G09G2370/12—Use of DVI or HDMI protocol in interfaces along the display data pipeline
Definitions
- the present invention relates to a stereoscopic image display device that generates a stereoscopic image having parallax from a plurality of images, and particularly relates to improvement in visibility.
- a right-eye image corresponding to the visual field viewed from the right eye and a left-eye image corresponding to the visual field viewed from the left eye are prepared. There is one that projects the image for the left eye only.
- a stereoscopic effect can be obtained from the parallax that is the amount of displacement in the horizontal direction between the right-eye image and the left-eye image, and the stereoscopic image display technique is used for a movie or the like that allows a subject to be viewed stereoscopically. With the spread of such technology, it is expected that devices for editing stereoscopic images taken at home will be used in the future.
- a pointer image may be displayed on the same screen as the stereoscopic image for the purpose of specifying an object in the image or specifying a display area.
- the pointer image itself is provided with a parallax and is stereoscopically expressed and synthesized as a stereoscopic image so that the object can be pointed more accurately.
- the display depth of the pointer image is fixed, if the display depth of the object pointed to by the pointer is different from the display depth of the pointer image, the pointer image is doubled when the user focuses on the object. Visible and focused on the pointer creates a visibility problem that the object appears double.
- Patent Document 1 discloses a technique for correcting the display depth of the pointer image so as to match the display depth of the indicated object.
- a pointer image to be combined with a right-eye image in accordance with the parallax of a stereoscopic image at a pointing position desired to be pointed by a pointer image that is, a shift amount between a right-eye image and a left-eye image
- the pointer image to be combined with the left-eye image has a parallax.
- the display depths of the stereoscopic image and the pointer image at the pointing position are matched to improve the visibility.
- the user's eyes cannot adapt to a sudden change in parallax, and the focus is deviated from the pointer image, resulting in a problem that visibility is impaired.
- the pointing position is indicated using a pointing device such as a mouse, but the pointer moves slightly in response to slight hand vibrations that are not intended by the user, so that the pointer moves between subjects with greatly different display depths. May occur. Particularly in such a case, a depth change unintended by the user occurs in the pointer image, so that the visibility problem becomes significant.
- the difference in the amount of parallax is large because the object on the side of the stereoscopic image displayed as the background of the pointer moves and the parallax changes even when the pointer is stationary Movement may also occur.
- An object of the present invention is to provide a stereoscopic image display device that improves the visibility of a pointing object such as a pointer image when the pointing position moves between subjects with greatly different display depths on a stereoscopic image. .
- a stereoscopic image display apparatus includes an image display means for displaying a stereoscopic image composed of a left-eye image and a right-eye image on a display, and a display surface in parallel.
- a graphical user interface that synthesizes an operation means for receiving a pointing position in an orthogonal coordinate system and a pointer image having a display depth in a direction orthogonal to the display surface with respect to the stereoscopic image displayed on the display at a predetermined drawing rate.
- the graphical user interface means includes a display depth of the pointer image in the first drawing cycle and a display depth of the stereoscopic image at the pointing position in the second drawing cycle subsequent to the first drawing cycle.
- the continuous drawing cycle after the second drawing cycle There are, from the display depth of the pointer image of the first drawing cycle until the display depth of the stereoscopic image in a pointing position in the second drawing cycle, to draw the pointer image by changing the display depth in order.
- the display depth of the pointer image is matched with the display depth of the stereoscopic image at the pointing position in order to make it easy to visually recognize which subject of the stereoscopic image the pointer image points to.
- this object can be achieved without necessarily matching the display depth of the pointer image and the display depth of the stereoscopic image at the pointing position. For example, even if the drawing is performed at such a display depth that the pointer image is slightly raised in front of the stereoscopic image actually indicated, the position indicated by the pointer image can be sufficiently visually recognized.
- the display depth of the pointer image is finally changed to the display depth of the stereoscopic image at the pointing position in the second drawing cycle. It is possible to achieve the object of the present invention without strictly matching.
- the display depth of the stereoscopic image at the pointing position changes due to the configuration described in the means for solving the problem
- the display depth of the pointer image changes to the display depth of the stereoscopic image over a plurality of drawing cycles. To do. Therefore, even when the difference between the display depth of the pointer image and the display depth of the stereoscopic image at the pointing position is large, the parallax of the pointer image does not change instantaneously.
- FIG. 1 is a diagram illustrating a hardware configuration of an information processing apparatus including a stereoscopic image display apparatus according to Embodiment 1.
- FIG. Block diagram showing a configuration of a stereoscopic image display device The figure which showed an example of the stereoscopic vision image display The figure which showed the other example of the stereoscopic vision image display The figure which shows typically the motion of a pointer image when a pointing position moves between the subjects from which a display depth differs greatly in a stereoscopic image.
- FIG. 7 is a block diagram illustrating a configuration of a stereoscopic image display device according to a second embodiment. The flowchart which showed the flow of the pointer image display process in Embodiment 2
- FIG. 1 is a diagram illustrating a hardware configuration of an information processing device including the stereoscopic image display device according to the first embodiment.
- the information processing apparatus 1000 can be used by a user as it is, but may be incorporated in various electric devices.
- An example of the information processing apparatus 1000 is typically a general-purpose computer such as a PC (Personal Computer).
- the information processing apparatus 1000 may be an AV device such as a television receiver or an AV playback apparatus, or a communication terminal such as a PDA (Personal Digital Assistance) or a mobile phone.
- AV device such as a television receiver or an AV playback apparatus
- a communication terminal such as a PDA (Personal Digital Assistance) or a mobile phone.
- PDA Personal Digital Assistance
- the information processing apparatus 1000 includes a CPU (Central Processing Unit) 10, a memory device 20, a communication device 30, an input device 40, a display device 45, a timer circuit 51, and an interrupt controller 55. These devices are connected to each other through a bus line 50. Further, the hard disk device 25 and the reading device 32 can be connected to the bus line 50 as necessary. The hard disk device 25, the reading device 32, the input device 40, and the display device 45 are connected to the bus line 50 through the interfaces 26, 35, 41, and 46, respectively.
- a CPU Central Processing Unit
- the CPU 10 may be composed of a single CPU or a plurality of CPUs.
- An information processing apparatus 1000 in FIG. 1 shows an example having a single CPU 10.
- the memory device 20 includes a ROM (Read Only Memory) 21 and a RAM (Random Access Memory) 22.
- the ROM 21 stores computer programs and data that define the operation of the CPU 10.
- the computer program and data can also be stored in the hard disk device 25.
- the CPU 10 executes processing defined by the computer program while writing the computer program and data stored in the ROM 21 or the hard disk device 25 to the RAM 22 as necessary.
- the RAM 22 also functions as a medium for temporarily storing data generated as the CPU 10 executes processing.
- the memory device 20 includes a non-volatile memory and a storage medium, such as a flash memory, which can be written and can retain stored contents even when the power is turned off.
- the hard disk device 25 is a device that writes and reads a computer program or data to a built-in hard disk (not shown).
- the reading device 32 is a device that reads a computer program or data recorded on a recording medium 31 (eg, CD, DVD, memory card, etc.).
- a recording medium 31 eg, CD, DVD, memory card, etc.
- the communication device 30 is a device that exchanges a computer program or data between the outside and itself through a communication line 33 such as a telephone line, a network line, wireless communication, infrared communication, and the like.
- the input device 40 is a device for inputting data or the like by a user operation, and is, for example, a keyboard arranged on a PDA, an input button arranged on a mobile phone, or a detachable mouse and keyboard.
- the display device 45 is a device that displays data, images and the like on a screen and outputs data and the like by voice, and is, for example, an LCD (Liquid Crystal Display), a cathode ray tube, or a speaker.
- LCD Liquid Crystal Display
- cathode ray tube or a speaker.
- the timer circuit 51 is a device that outputs a timer interrupt signal at a constant cycle.
- the interrupt controller 55 is a device that relays an interrupt request signal sent from the timer circuit 51, the input device 40, the CPU 10, the communication device 30 that is a network device, the hard disk device 25, the reading device 32, and the like to the CPU 10. Priorities are assigned to interrupt requests from each device.
- the interrupt controller 55 has a function of arbitrating requests according to priority when interrupts are simultaneously generated from a plurality of devices.
- the information processing apparatus 1000 is configured as a computer.
- the computer program can be supplied through a recording medium 31 such as a ROM 21, a hard disk device 25, a flexible disk (not shown), a CD-ROM, or a transmission medium such as an electric communication line 33.
- a computer program recorded on the recording medium 31 can be read by connecting the reading device 32 to the information processing device 1000.
- the read computer program can be stored in the RAM 22 or the hard disk device 25.
- the CPU 10 can execute processing according to the computer program by mounting the ROM 21 in the information processing apparatus 1000.
- a computer program supplied through a transmission medium such as the telecommunication line 33 is received through the communication device 30 and stored in the RAM 22 or the hard disk device 25, for example.
- the transmission medium is not limited to a wired transmission medium, and may be a wireless transmission medium.
- the transmission medium includes not only a communication line but also a relay device that relays the communication line, such as a router.
- FIG. 2 is a block diagram illustrating a functional configuration of the stereoscopic image display apparatus according to the first embodiment.
- the stereoscopic image display apparatus includes a storage unit 101, a compression / expansion unit 102, a display unit 103, an operation unit 106, a parallax acquisition unit 108, and a parallax correction unit 109.
- the storage means 101 is means for temporarily storing the stereoscopic image data 11 when storing or reproducing the stereoscopic image data 11. This can be associated with the memory device 20 of FIG.
- the stereoscopic image data 11 is data including a left-eye image 12 that is projected only to the left eye of a user who views the stereoscopic image and a right-eye image 13 that is projected only to the right eye.
- the left-eye image 12 and the right-eye image 13 may be compressed into a specific format, for example, represented by the MPEG format.
- the compression / decompression unit 102 that functions as an image display unit receives the stereoscopic image data 11 compressed in a specific compression format, decompresses and converts the stereoscopic image data 11 into a format that can be displayed by the display unit 103, and outputs it to the VRAM 105.
- a compression format of an image a JPEG format, a GIF format, a PNG format, etc. are typical for a still image, and an AVI format, an MPEG format, etc. are typical for a moving image.
- the left-eye and right-eye MPEG of the stereoscopic image data 11 is used.
- Each data in the compression format is decoded by the compression / decompression unit 102 which is an MPEG decoder, converted into a left-eye image 12 and a right-eye image 13 in a format that can be output on the screen by the display unit 103, and transferred to the VRAM 105 in units of frames. .
- the display means 103 includes a display 104 that is a display screen and a VRAM (video random access memory) 105 that stores image information to be output to the display 104. This can be associated with the display device 45 of FIG.
- the display unit 103 outputs the image information transferred to the VRAM 105 to the display 104.
- the display means 103 displays the left-eye image 12 and the right-eye image 13 transferred to the VRAM 105 so that the viewer can form a stereoscopic image.
- a method for forming a three-dimensional image for example, there is a method using a polarizing filter as shown in FIG.
- the left-eye image 12 and the right-eye image 13 are displayed in parallel in the horizontal direction on the screen of the display 104.
- Polarization filter 201 is pasted on the area where the image for left eye 12 is displayed, and polarized in the direction where the polarization direction is 90 degrees different from the polarization filter pasted on the image for left eye on the area where the image for right eye 13 is displayed.
- a filter 202 is pasted.
- the viewer views using the stereoscopic image browsing glasses 203.
- the stereoscopic image browsing glasses 203 are obtained by attaching a polarizing filter having the same polarization direction as that of the polarizing filter attached to the screen to each of the left eye and the right eye.
- the first-view stereoscopic image viewing glasses 203 may further include a lens that refracts so that the left-eye image and the right-eye image are easily imaged.
- FIG. 4 the right eye image and the left eye image are alternately displayed on the display, and the right eye and the left eye of the stereoscopic image viewing glasses are alternately displayed.
- the display unit 103 further includes a pointer display unit 107.
- the pointer display unit 107 constitutes a graphical user interface unit together with the parallax acquisition unit 108 and the parallax correction unit 109, and outputs the pointer image to the display 104 to the VRAM 105 based on the operation content from the operation unit 106. Pointer image information is output.
- the pointer display unit 107 generates a left-eye pointer image 14 and a right-eye pointer image 15 and uses the same method as the stereoscopic image display described above so that the pointer itself can be imaged as a stereoscopic image by parallax. Forward to.
- the pointer display unit 107 acquires the parallax corrected by the parallax correction unit 109 and generates the left-eye pointer image 14 and the right-eye pointer image 15 so as to be applied as parallax for displaying the pointer. Details of the parallax correction method for displaying the pointer will also be described later.
- the operation means 106 is means for inputting an operation to the stereoscopic image editing apparatus 10 from the user. This can be associated with the input device 40 of FIG.
- the user uses the operation unit 106 to operate the stereoscopic image display device. Enter.
- the parallax acquisition unit 108 acquires the amount of parallax between the left-eye image 12 and the right-eye image 13 at the position instructed by the operation unit 106 on the stereoscopic image output on the screen. This can be associated with a program stored in the storage device 20 that operates on the CPU 10 of FIG. It can also be implemented as hardware. Details of the parallax acquisition method will be described later.
- the parallax correction unit 109 corrects the parallax amount acquired by the parallax acquisition unit 108 to the parallax actually used for displaying the pointer image, and notifies the pointer display unit 107 to display the pointer image with the corrected parallax amount.
- an intermediate parallax between the parallax of the pointer image currently displayed and the parallax of the stereoscopic image acquired from the parallax acquisition unit 108 is calculated, and the parallax obtained by correcting the intermediate parallax is calculated. To do. Details of the method for calculating the intermediate parallax will be described later.
- Such a function of the parallax correction unit 109 can be associated with a program stored in the storage device 20 that is operated by the CPU 10 in FIG. 1. Alternatively, it can be implemented as hardware.
- FIG. 5 is a diagram schematically illustrating the movement of the pointer image when the pointing position moves between subjects having different display depths in a stereoscopic image.
- the stereoscopic image used here is an image formed by the automobile at a position protruding from the display surface.
- FIG. 6A shows a left-eye image and a right-eye image in which the pointer images at time t0 are combined.
- a pointer image is drawn at the horizontal coordinate x1 on the front surface of the automobile, and in the left-eye image, the pointer image is drawn at the horizontal coordinate x2 on the front face of the automobile.
- the parallax Pimg of the front surface of the automobile and the parallax Pobj (t0) of the pointer image in the right-eye image and the left-eye image are both x1-x2, and as a result, the pointer image at the time point t0 is the pointing image. Depending on the position, it is imaged at the same display depth as the front of the car.
- FIG. 6B shows a left-eye image and a right-eye image obtained by combining the pointer images at time t1.
- the pointer image is combined with the left-eye image and the right-eye image at the positions of horizontal coordinates x1 'and x2', respectively.
- the parallax Pobj (t1) of the pointer image is smaller than the parallax x1-x2 of the front surface of the automobile indicated by the pointer image at the time point t0, and larger than the parallax 0 in the background having the same display depth as the display surface.
- the pointer image at the time point t1 is imaged at a display depth between the display depth of the pointer image at the time point t0 and the display depth of the display surface.
- FIG. 6C shows a left-eye image and a right-eye image obtained by combining the pointer images at time t3.
- the pointer image is combined with the left-eye image and the right-eye image at the positions of horizontal coordinates x1 ′′ and x2 ′′, respectively.
- x1 ′′ and x2 ′′ are the same coordinates, and the parallax Pobj (t3) of the pointer image combined with the left-eye image and the right-eye image is zero.
- the user can visually recognize the display depth of the pointer image without abruptly changing. It is possible to realize easy pointer image movement.
- FIG. 8 is a flowchart showing the flow of pointer image display processing in the stereoscopic image display apparatus according to the first embodiment.
- the pointer image display process shown in this flowchart is executed in a state where a stereoscopic image is displayed on the display.
- the selected stereoscopic image data is read from the storage means 101 and compressed and decompressed. This is realized by decompressing and converting the stereoscopic image data 11 compressed by the means 102 into a format that can be displayed by the display means 103, and transferring it to the VRAM 105.
- step S301 each time the drawing timing of the pointer image arrives (step S301: Yes), the drawing cycle of step S302 to step S308 is repeatedly executed.
- the pointer image drawing timing may be synchronized with the frame rate of the display device, or may be provided once every several frames. Or you may set the drawing period of a pointer image by the time measuring using a timer.
- steps S302 to 304 the parallax Pimg of the part of the image for left eye 12 and the image for right eye 13 corresponding to the pointing position designated at the time of executing the drawing cycle is calculated.
- parallax there are various methods for obtaining parallax, but here, a spot having the same feature point is detected in the left-eye image and the right-eye image, the respective feature points are compared, and the horizontal shift is parallaxed. Describe how to get as. Normally, when the user operates the display unit to display a pointer on the stereoscopic image output on the screen via the operation unit 106, for example, the information on the pointing position is obtained from the operation unit 106 for each frame unit. To be notified. Each time the information is notified, the parallax obtaining unit 108 coordinates the part indicated by the pointer on either the left-eye image 12 or the right-eye image 13 decompressed and converted by the compression / decompression unit 102. Is identified.
- the parallax acquisition unit 108 searches for the part having the same feature point as the image around the specified part from the other image, and acquires the coordinates of the part.
- a pattern matching method there are a pattern matching method, a template matching method, a DP matching method, and the like as a method for searching for a portion having the same feature point, and any method may be used.
- the stereoscopic image data 11 itself is a format that includes parallax information for each frame and each pixel in advance, it is possible to more easily acquire the parallax amount at the pointing position. it can.
- Such a feature point search process is always executed in the parallax acquisition unit 108, and the result of the feature point search executed at the timing when the procedure of step S302 is processed is compared in step S303.
- the parallax acquisition unit 108 calculates the parallax of the subject at the position indicated by the pointer (step S304). Specifically, when the subject at the pointing position forms an image at a display depth different from that of the display surface, as a result of searching for a feature point in step S302, the left eye image 12 and the right eye image 13 are detected. The relative coordinates of the pointing position are shifted in the horizontal direction.
- the parallax acquisition unit 108 acquires the amount of deviation (the number of pixels shifted in the horizontal direction) as the parallax Pimg of the subject at the pointer designated position.
- the process proceeds to step S308, where the pointer display means 107 is the same as the pointer image in the previous cycle.
- a pointer image is synthesized at the same coordinate position.
- the parallax correction unit 109 calculates the absolute value of the difference between the parallax Pobj (tn-1) used for drawing the pointer image in the previous cycle and the parallax Pimg. It is determined whether or not the absolute value of Pobj (tn-1) is equal to or smaller than a predetermined threshold value Th1 (step S305). When the absolute value of Pimg-Pobj (tn-1) is equal to or smaller than the predetermined threshold Th1 (step S305: Yes), it is determined that it is not necessary to correct the parallax used for displaying the pointer image itself, and the parallax correcting unit 109 Notifies the pointer display means 107 to that effect.
- step S308 The processing transitions to step S308, and the pointer display means 107 gives a parallax having the same value as the parallax Pimg between the left-eye pointer image 14 and the right-eye pointer image 15, and the left-eye image 12 and the right-eye image 13. And synthesize. As a result, the display depth of the pointer image matches the display depth of the subject at the pointing position.
- the threshold value Th1 uses a parallax change amount value that allows the user's eyes to adapt to the parallax change even if the parallax of the pointer image changes in one cycle. A suitable value for the threshold Th1 is determined according to the display size.
- the parallax correction unit 109 uses the parallax Pobj (tn) used in the current pointer image drawing cycle. ) Is calculated (step S306).
- the parallax Pobj (tn) calculated by the parallax correction unit 109 is an intermediate parallax between the parallax Pimg of the subject at the current pointing position and the parallax Pobj (tn ⁇ 1) of the pointer image in the previous cycle.
- the calculation method of the intermediate parallax can be implemented by the following method described using Expression 1, for example.
- Equation 1 the time point when the parallax of the subject indicated by the change of the pointing position or the change of the stereoscopic image is changed to t0, and Pobj is the parallax of the pointer image at the time point t0.
- K / T is a constant that determines the amount of change in parallax. If this value is large, the change in parallax becomes faster. More specifically, the constant K is a constant that determines the speed of change, and the variable T can be set to a time required for a change in parallax such as “changes from the initial value Pobj to the end value Pimg in T seconds”. .
- S is a constant that determines the timing for changing the parallax, and the larger this value, the greater the change in parallax between cycles at an earlier time. Specifically, when the constant S is large, the change in parallax starts to increase at a time close to t0, and the sigmoid curve shown in FIG. 7 becomes gentle. 7 becomes larger, the sigmoid curve shown in FIG. 7 becomes steeper.
- K and S and the variable T can be set to arbitrary values.
- the drawing rate for updating the pointer image is 30 fps
- the parallax correction unit 109 acquires the screen size or screen resolution for displaying the stereoscopic image and the pointer image, and changes the correction start timing of the parallax of the pointer image according to the value.
- S, and variable T may be set dynamically. For example, on screens where changes in parallax are conspicuous, such as large screens and low resolutions, a large value is set for S and T so as to suppress changes in the parallax of the pointer image, and conversely changes in parallax such as small screens and high resolutions.
- the visibility can be improved according to the output screen by setting a small value to S or T in order to cancel the suppression of the parallax change of the pointer image.
- the visibility can be improved according to the output screen.
- the parallax correction unit 109 that has calculated the parallax Pobj (tn) in step S306 notifies the pointer display unit 107 of the parallax Pobj (tn).
- the pointer display unit 107 notified of the parallax Pobj (tn) determines coordinates for combining the pointer image with the left-eye image and the right-eye image, and corrects the pointer image. For example, in the case where the parallax Pimg is calculated based on the position indicated by the pointer in the left-eye image 12 in S304, Pobj (tn) is a pixel whose pointer image to be combined with the right-eye image 13 is shifted in the horizontal direction. Number.
- the position of the left-eye pointer image 14 to be synthesized on the left-eye image 12 is corrected to the coordinates of the feature points of the left-eye image 12 searched in step S302, and on the other hand, synthesized on the right-eye image 13.
- the position of the right-eye pointer image 15 is corrected to a coordinate position shifted by Pobj (tn) in the horizontal direction from the coordinate position of the left-eye pointer image 14. Thereby, the parallax Pobj (tn) is reflected in the pointer image.
- the right-eye image 13 has a coordinate position shifted to the right in the horizontal direction from the left-eye image 12, and the value of Pobj (tn) is a negative value. In this case, the coordinate position is shifted to the left in the horizontal direction.
- the pointer display means 107 synthesizes the left-eye pointer image 14 with the left-eye image 12 on the VRAM, and synthesizes the right-eye pointer image 15 with the right-eye image 13 on the VRAM (step S308). Specifically, when the parallax correction unit 109 performs the coordinate correction in step S307, the pointer display unit 107 converts the corrected left-eye pointer image 14 and the corrected right-eye pointer image 15 into the left-eye image 12. And the image 13 for the right eye. Thereby, the pointer image displayed on the display 104 forms an image with a display depth corresponding to the parallax Pobj (tn).
- the intermediate parallax is corrected by the correction in the current cycle. It can be applied to a pointer image and displayed.
- the display depth of the pointer image is smoothly changed from the initial value, and finally the subject is displayed at the pointing position. It is possible to express an image that makes a transition to depth.
- FIG. 9 is a block diagram illustrating a functional configuration of the stereoscopic image display apparatus according to the second embodiment.
- the same components as those in FIG. 2 described above are denoted by the same reference numerals, and description thereof is omitted.
- the stereoscopic image display apparatus is added with a parallax change amount detection unit 112 and a screen information acquisition unit 113 and replaces the parallax correction unit 109 with the parallax correction unit 114 as compared with the configuration illustrated in FIG. 2. It is a configuration.
- the parallax change amount detection unit 112 acquires the parallax Pimg (tn ⁇ 1) on the stereoscopic image at the position indicated by the pointer calculated by the parallax acquisition unit 108 and holds it until the next processing cycle of the drawing process of the pointer image. . Further, the parallax change amount detection unit 112 compares the value of the parallax Pimg (tn) acquired from the parallax acquisition unit 108 with the held parallax Pimg (tn ⁇ 1) in the next processing cycle.
- the parallax change amount detection unit 112 When the difference between the compared values is within a preset threshold Th2, the parallax change amount detection unit 112 notifies the parallax correction unit 114 to change the parallax of the pointer image, and outputs the parallax Pimg (tn). To do.
- the parallax change amount detection unit 112 When the compared value exceeds a preset threshold, the parallax change amount detection unit 112 notifies the parallax correction unit 114 not to change the parallax of the pointer image. Further, the parallax change amount detection unit 112 updates the value to be held to the value of the parallax Pimg (tn) regardless of the comparison result.
- the screen information acquisition unit 113 acquires screen information including the screen size or the screen resolution in the display unit 103, and outputs the screen information in response to a request from the parallax correction unit 114.
- the acquisition of the screen information can be realized, for example, by acquiring the device information in the HDMI connection negotiation phase.
- the parallax correction unit 114 acquires a notification indicating whether or not to change the parallax of the pointer image from the parallax change amount detection unit 112 and the parallax Pimg (n) of the stereoscopic image at the position indicated by the pointer.
- the parallax correction unit 114 uses the value of the parallax Pimg (n) acquired from the parallax change amount detection unit 112 to actually use the parallax for displaying the pointer image. Correct.
- the parallax correcting unit 114 When the parallax used for displaying the pointer image is corrected, the parallax correcting unit 114 notifies the pointer display unit 107 to display the pointer image with the corrected parallax.
- the correction in the parallax correction unit 114 calculates the intermediate parallax between the parallax of the pointer image currently displayed and the parallax of the stereoscopic image calculated by the parallax acquisition unit 108, and the parallax amount obtained by correcting the calculated intermediate parallax. To do.
- the method for calculating the intermediate parallax is the same as that of the parallax correction unit 109 described in the first embodiment.
- the pointer display unit sets the same value as the parallax of the pointer image currently used for display as the parallax of the pointer image in the next cycle. 107 is notified.
- the parallax correction unit 114 changes the degree of correcting the parallax of the pointer image according to the screen size or screen resolution acquired from the screen information acquisition unit 113 when calculating the intermediate parallax used for displaying the pointer image. It has a function. For example, when the screen size is large (for example, a large screen exceeding 32 inches), the amount of change in parallax per cycle is suppressed so that the display depth of the pointer image does not change abruptly. Conversely, when the screen size is small (for example, a small screen of 32 inches or less), the amount of change in parallax per cycle is increased in order to clarify the change in the display depth of the pointer image. Thus, the pointer can be displayed with a change in parallax suitable for the size and screen resolution of the screen to be displayed, and the visibility can be improved.
- FIG. 10 is a flowchart showing the flow of pointer image display processing in the stereoscopic image display apparatus according to the second embodiment.
- Step S405 is a process of comparing the difference between the parallax Pimg (tn) in the drawing cycle and the parallax Pimg (tn ⁇ 1) in the previous drawing cycle with the threshold Th2, and step S410 is the parallax change amount detection unit 112. Is a process of updating the parallax Pimg held in step 1 to a value calculated in the current drawing cycle at the end of one drawing cycle.
- step S405 The parallax change amount detection unit 112 holds the subject parallax Pimg (tn ⁇ 1) at the pointing position calculated in the previous drawing cycle (step S401 to step S410) as described above.
- step S405 The difference (change amount) between the parallax Pimg (tn) in the current drawing cycle calculated in step S404 and the held parallax Pimg (tn ⁇ 1) in the previous drawing cycle is compared with the threshold Th2.
- the difference between the parallax Pimg (tn) in the drawing cycle and the parallax Pimg (tn ⁇ 1) in the previous drawing cycle indicates the amount of change in the parallax of the stereoscopic image at the pointing position.
- the parallax change amount detection unit 112 When the amount of change in parallax is equal to or less than a preset threshold Th2 (below the threshold in step S405), the parallax change amount detection unit 112 notifies the parallax correction unit 114 that the parallax correction processing is performed. The process transitions to step S406. On the other hand, when the parallax change amount exceeds the threshold value Th2 (exceeding the threshold value in step S405), the parallax change amount detection unit 112 notifies the parallax correction unit 114 that the parallax correction processing is not performed.
- the parallax correction unit 114 uses the same value as the parallax Pobj (tn ⁇ 1) used for the pointer image in the previous drawing cycle as it is as the parallax Pobj (tn) of the pointer image in the current drawing cycle.
- the pointer image display unit 107 is notified and the process proceeds to step S409.
- the object pointed to by the pointer may be repeatedly switched for each frame even if the pointing position does not change.
- the parallax correction processing is not performed.
- drawing is performed without changing the depth of the pointer for each frame, and flickering of the pointer display can be reduced. It becomes.
- Such an effect is particularly noticeable when a stereoscopic image that is a moving image has a minute shake due to a camera shake during shooting.
- System LSI refers to a package in which a bare chip is mounted on a high-density substrate.
- a system LSI that includes a plurality of bare chips mounted on a high-density substrate and packaged so that the plurality of bare chips have an external structure like one LSI is also included in the system LSI (such a system LSI).
- LSI is called a multi-chip module.
- QFP Quad Flood Array
- PGA Peripheral Component Interconnect Express
- QFP is a system LSI in which pins are attached to four side surfaces of a package.
- the PGA is a system LSI in which many pins are attached to the entire bottom surface.
- pins serve as an interface with other circuits. Since pins in the system LSI have such an interface role, by connecting other circuits to these pins in the system LSI, the system LSI plays a role as the core of the playback device.
- Such a system LSI can be incorporated into various devices that handle video reproduction, such as TVs, games, personal computers, and 1Seg mobile phones as well as playback devices, and can broaden the application of the present invention.
- a bus connecting circuit elements, ICs, LSIs, peripheral circuits, an interface with the outside, etc. will be defined.
- connection lines, power supply lines, ground lines, clock signal lines, and the like will be defined.
- the circuit diagram is completed while adjusting the operation timing of each component in consideration of the specifications of the LSI and making adjustments such as ensuring the bandwidth required for each component.
- Mounting design refers to where on the board the parts (circuit elements, ICs, and LSIs) on the circuit diagram created by circuit design are placed, or how the connection lines on the circuit diagram are arranged on the board. This is a board layout creation operation for determining whether to perform wiring.
- the mounting design consists of automatic placement and automatic wiring.
- this automatic placement can be realized using a dedicated algorithm called “centroid method”.
- centroid method a connection line that connects pins of components on a circuit diagram is defined using a metal foil or a via.
- this wiring process can be realized by using a dedicated algorithm called “maize method” or “line search method”.
- the mounting design result is converted into CAM data and output to equipment such as an NC machine tool.
- the NC machine tool performs SoC mounting and SiP mounting based on the CAM data.
- SoC (System on chip) mounting is a technique for printing a plurality of circuits on one chip.
- SiP (System in Package) mounting is a technology in which a plurality of chips are made into one package with resin or the like.
- the integrated circuit generated as described above may be called IC, LSI, super LSI, or ultra LSI depending on the degree of integration.
- each playback device may be configured as one chip.
- the circuit integration is not limited to the above-described SoC mounting and SiP mounting, and may be realized by a dedicated circuit or a general-purpose process. It is conceivable to use an FPGA (Field Programmable Gate Array) that can be programmed after manufacturing the LSI, or a silicon configurable processor that can reconfigure the connection and setting of circuit cells inside the LSI. Furthermore, if integrated circuit technology comes out to replace LSI's as a result of the advancement of semiconductor technology or a derivative technology, it is naturally also possible to carry out function block integration using this technology. For example, biotechnology can be applied.
- FPGA Field Programmable Gate Array
- the present invention may be an application execution method disclosed by the processing procedure of the flowchart described in each embodiment. Further, it may be a computer program including a program code that causes a computer to operate according to the processing procedure, or may be a digital signal composed of the computer program. Since the control procedure described with reference to the flowcharts in each embodiment and the control procedure using functional components are specifically realized using hardware resources, the technical idea using the laws of nature is used. It can be said to be a creation, but it meets the requirements for “program invention”.
- the present invention also provides a computer-readable recording medium such as a flexible disk, hard disk, CD-ROM, MO, DVD, DVD-ROM, DVD-RAM, BD (Blu-ray Disc). ), Recorded in a semiconductor memory or the like.
- a computer-readable recording medium such as a flexible disk, hard disk, CD-ROM, MO, DVD, DVD-ROM, DVD-RAM, BD (Blu-ray Disc).
- the computer program or the digital signal may be transmitted via an electric communication line, a wireless or wired communication line, a network represented by the Internet, or the like.
- the stereoscopic image display device described in each embodiment may further include an external I / F that acquires external data such as a USB, a network, a camera input, and an external storage medium.
- the stereoscopic image display device may be configured to acquire the stereoscopic image data 11 via the external I / F and store it in the storage unit 101.
- the operation means 106 may be any means that can input operation details to the stereoscopic image display device.
- the operation means 106 is not limited to a keyboard or a mouse, but may be an input device integrated with the display 104, for example, as represented by a touch panel display.
- the position information for displaying the pointer can be acquired by methods other than those described in each embodiment, and any method may be used as long as the information for specifying the position on the stereoscopic image can be acquired.
- any method may be used as long as the information for specifying the position on the stereoscopic image can be acquired.
- there is the following method. When the operation unit 106 provides pointer position information to the display unit 103 and the display unit 103 determines the position where the pointer is actually displayed, the actual pointer display position is displayed from the display unit 103. The method of acquiring may be used.
- Expression 1 is exemplified as an expression for correcting the parallax so that the parallax of the pointer continuously changes.
- the calculation method of the intermediate parallax in the parallax correction unit may use methods and formulas other than those described above. it can.
- Formula 3 may be used for calculating the intermediate parallax.
- the parallax of the pointer image in the previous cycle is Pobj (tn-1)
- the parallax of the pointer image used in the current cycle is Pobj (tn)
- the subject on the stereoscopic image at the position indicated by the current pointer The parallax is denoted as P mg.
- Pobj (tn) Pobj (tn-1) + [(Pimg-Pobj (tn-1)) / k] Equation 3
- k is a value that determines the rate of change in parallax.
- a value that provides a parallax change suitable for the user is set to k.
- the parentheses [] are Gauss symbols, and indicate “the maximum integer value not exceeding the value in []”. Thereby, the correction parallax Pobj (tn) of the pointer image used in the current drawing cycle can be obtained.
- the parallax correction of the pointer image described in each embodiment is intended to suppress a sudden change in the display depth of the pointer image, but the screen size for displaying the pointer image is extremely small in the first place. In some cases, even if the parallax change is large, the depth change visually recognized by the user is small, and the merit of the parallax correction of the pointer image is not significant.
- step S306 in FIG. 8 and step S407 in FIG. 10 is not executed, and the pointing position is set as the parallax Pobj of the pointer image.
- the pointer image may be drawn using the same value as the parallax Pimg of the subject at.
- the pointer image may be drawn with a parallax with a display depth slightly in front of the stereoscopic image at the pointing position.
- the parallax of the pointer image is drawn by shifting the parallax of the pointer image by about 1 pixel in the direction of rising toward the front from the parallax of the stereoscopic image at the pointing position.
- the amount of deviation provided between the parallax of the pointer image and the parallax of the stereoscopic image at the pointing position may be a range in which it is possible to sufficiently recognize which subject the pointer image points to.
- a suitable value is determined according to the screen resolution. In other words, even if this deviation is constant, the larger the screen size, the wider the distance between the subject and the pointer.
- the stereoscopic image display apparatus is useful as an information processing apparatus or AV device having a function of instructing a subject on a stereoscopic image. It can also be applied to applications such as communication terminals such as PDAs and mobile phones.
Abstract
Description
図1は、実施の形態1における立体視画像表示装置を備えた情報処理装置ハード構成を示す図である。この情報処理装置1000は、それ自体としてユーザの使用に供することもできるが、様々な電気機器に組み込まれてもよい。情報処理装置1000の一例は、代表的にはPC(Personal Computer;パーソナルコンピュータあるいはパソコン)等の汎用のコンピュータである。また、情報処理装置1000は、テレビ受像機やAV再生装置などのAV機器、PDA(Personal Digital Assistance)あるいは携帯電話機等の通信端末でもよい。
スである通信装置30、ハードディスク装置25、読み取り装置32等から送られる割り込み要求信号を、CPU10へ中継する装置である。各装置からの割り込み要求には優先度が付けられている。割り込みコントローラ55は、同時に複数の装置から割り込みが発生した場合には、それらの要求を優先度に応じて調停する機能を有している。
次に、図5、図6を参照しながら、本発明におけるポインタ画像の動きを説明する。図5は、立体視画像において表示深度の大きく異なる被写体間でポインティング位置が移動する場合のポインタ画像の動きを模式的に示す図である。本図に示すように、ここで用いる立体視画像はディスプレイ面よりも飛び出した位置に自動車が結像する画像である。また、本図において時間は、時点t0、時点t1、時点t2、時点t3の順に遷移する。
(実施の形態2)
図9は、実施の形態2における立体視画像表示装置の機能構成を示すブロック図である。前述した図2と同じ構成要素は、同じ番号で示し、説明を省略する。
Th2=(e/2)/(画面サイズ/水平解像度) ・・・式2
式2においてeは、視聴者の目の幅である。
サイズが50incでフルHD(水平解像度が1920ピクセル)の画面を例にとると、
目の幅が一般に6.5cmとして、閾値Th2は、68.18ピクセルとなる。
上述の処理手順では、繰り返し切り替わるオブジェクトAとオブジェクトBの深度に大きな差があり、この差が閾値Th2を超える場合は視差補正処理を行わない。これにより、ポインタがオブジェクトAとオブジェクトBとをフレーム毎に交互に指し示すような場合に、ポインタの深度をフレーム毎に変化させずに描画することになり、ポインタ表示のちらつきを低減することが可能となる。このような効果は、撮影時の手振れなどにより動画である立体視画像に微細な揺れがある場合に特に顕著なものとなる。
(備考)
以上、本願の出願時点において、出願人が知り得る最良の実施形態について説明したが、以下に示す技術的トピックについては、更なる改良や変更実施を加えることができる。各実施形態に示した通り実施するか、これらの改良・変更を施すか否かは、何れも任意的であり、実施する者の主観によることは留意されたい。
(システムLSI化)
本発明は、図2、及び図9に示す構成を本質的部分とする。立体視画像表示装置のうち、かかる本質的部分を抜き出して、システムLSIとして構成してもよい。
本発明は、各実施の形態で説明したフローチャートの処理手順が開示するアプリケーション実行方法であるとしてもよい。また、前記処理手順でコンピュータを動作させるプログラムコードを含むコンピュータプログラムであるとしてもよいし、前記コンピュータプログラムからなるデジタル信号であるとしてもよい。各実施形態においてフローチャートを引用して説明した制御手順や、機能的な構成要素による制御手順は、ハードウェア資源を用いて具体的に実現されていることから、自然法則を利用した技術的思想の創作といえ、“プログラムの発明”としての成立要件を満たす。
各実施形態で説明した立体視画像表示装置は、さらにUSBやネットワーク、カメラ入力や外部記憶媒体などの外部データを取得する外部I/Fを備えてもよい。立体視画像表示装置は、立体視画像データ11を外部I/Fを介して取得して、記憶手段101へ記憶する構成としてもよい。
操作手段106は、立体視画像表示装置に対して操作内容を入力できる手段であればよい。操作手段106は、キーボードやマウスに限定されず、例えばタッチパネルディスプレイに代表されるような、ディスプレイ104と一体型の入力デバイスであってもよい。
実施の形態1においては、ポインタの視差が連続的に変化するよう視差を補正する式として式1を例示したが、視差補正手段における中間視差の算出方法は上述以外の方法および式を用いることもできる。
Pobj(tn)=Pobj(tn-1)+[(Pimg-Pobj(tn-1))/k] ・・・式3
kは視差の変化量の割合を決定する値である。kの値が大きいほど、ポインタの視差がポインタの指示する位置における立体視画像上の被写体の視差と一致するまで、より多くのフレーム数を要することとなり、結果としてより時間をかけて変化することになる。ユーザにとって好適な視差変化が得られる値をkに設定する。カッコ[]はガウス記号であり、「[]内の値を超えない最大の整数値」であることを示す。これにより、現在の描画サイクルで用いるポインタ画像の補正視差Pobj(tn)を求めることができる。
各実施の形態において説明したポインタ画像の視差補正は、ポインタ画像の表示深度が急激に変化することを抑制することを目的とするものであるが、そもそもポインタ画像を表示する画面サイズが極めて小型である場合には、視差変化が大きくともユーザに視認される深度変化が小さなものとなるため、ポインタ画像の視差補正のメリットも顕著なものではなくなる。
各実施の形態では、ポインタ画像の表示深度と、ポインティング位置における立体視画像の表示深度とを一致させることで、ポインタ画像が立体視画像の何れの被写体を指し示すかを視認しやすくしている。しかし、指し示している立体視画像よりも、ポインタ画像をわずかに手前に浮き出るような表示深度で描画することで、被写体とポインタとの区別を視認しやすくすることができる。
20 メモリ装置
21 ROM
22 RAM
25 ハードディスク装置
26,35,41,46 インタフェース
30 通信装置
31 記録媒体
32 読取装置
33 電気通信回線
40 入力装置
45 表示装置
50 バスライン
51 タイマ回路
55 割込コントローラ
11 立体視画像データ
12 左眼用画像
13 右眼用画像
14 左眼用ポインタ画像(左眼用指示オブジェクト画像)
15 左眼用ポインタ画像(左眼用指示オブジェクト画像)
16 立体視表示用ポインタ画像
101 記憶手段
102 圧縮/伸長手段
103 表示手段
104 ディスプレイ
105 VRAM
106 操作手段
107 ポインタ表示手段
108 視差取得手段
109,114 視差補正手段
111 外部I/F
112 視差変化量検知手段
113 画面情報取得手段
201 偏光フィルタ
202 偏光フィルタ201と偏光方向が90度異なる偏光フィルタ
203 立体視画像閲覧用めがね
Claims (9)
- 立体視画像表示装置であって、
左目用画像と右目用画像とから構成される立体視画像を、ディスプレイに表示させる画像表示手段と、
ディスプレイ面に並行な直交座標系におけるポインティング位置を受け付ける操作手段と、
ディスプレイ面に直交する方向に表示深度を持つポインタ画像を、ディスプレイに表示される前記立体視画像に対して、所定の描画レートで合成するグラフィカルユーザインターフェイス手段とを備え、
グラフィカルユーザインターフェイス手段は、第1描画サイクルでのポインタ画像の表示深度と、当該第1描画サイクルの次の第2描画サイクルでのポインティング位置における前記立体視画像の表示深度とが異なる場合、第2描画サイクル以後の連続した複数描画サイクルにおいて、第1描画サイクルでのポインタ画像の表示深度から第2描画サイクルでのポインティング位置における前記立体視画像の表示深度まで、表示深度を順に変化させてポインタ画像を描画する
立体視画像表示装置。 - グラフィカルユーザインターフェイス手段は、第1描画サイクルでのポインタ画像の表示深度と、第2描画サイクルでのポインティング位置における前記立体視画像の表示深度との中間の表示深度を、第2描画サイクルにおけるポインタ画像の表示深度とする
ことを特徴とする請求項1記載の立体視画像表示装置。 - 前記表示深度は、左目用画像に合成されたポインタ画像と右目用画像に合成されたポインタ画像との水平方向の変位量である視差により定まる
ことを特徴とする請求項2記載の立体視画像表示装置。 - 前記グラフィカルユーザインターフェイス手段は、第1描画サイクルで表示される左目用画像に合成されたポインタ画像と右目用画像に合成されたポインタ画像との視差、及び、第2描画サイクルでのポインティング位置における立体視画像の視差を入力とし、第2描画サイクルでのポインタ画像の視差を出力する関数を用いて、第2描画サイクルでポインタ画像を左目用画像と右目用画像とに合成する部位を決定する
ことを特徴とする請求項3記載の立体視画像表示装置。 - 第1描画サイクルでのポインティング位置における前記立体視画像の表示深度と、第2描画サイクルでのポインティング位置における前記立体視画像の表示深度との差が所定の範囲内である場合、グラフィカルユーザインターフェイス手段は、第1描画サイクルでのポインタ画像の表示深度と、第2描画サイクルでのポインティング位置における前記立体視画像の表示深度との中間の表示深度を、第2描画サイクルにおけるポインタ画像の表示深度とし、
前記差が前記所定の範囲を超える場合、前記グラフィカルユーザインターフェイス手段は、第1描画サイクルにおけるポインタ画像の表示深度を、第2描画サイクルにおけるポインタ画像の表示深度とする
ことを特徴とする請求項1記載の立体視画像表示装置。 - 前記所定の範囲は、前記ディスプレイの大きさ及び画面解像度の少なくとも一方に応じて定まる範囲である
ことを特徴とする請求項5記載の立体視画像表示装置。 - 前記グラフィカルユーザインターフェイス手段は、第2描画サイクル以後の連続した前記複数描画サイクルのサイクル数を、前記ディスプレイの大きさ及び画面解像度の少なくとも一方に応じて決定する
ことを特徴とする請求項1記載の立体視画像表示装置。 - 立体視画像表示処理を行う半導体集積回路であって、
左目用画像と右目用画像とから構成される立体視画像を、ディスプレイに表示させる画像表示手段と、
ディスプレイ面に並行な直交座標系におけるポインティング位置の入力を受け付ける受付手段と、
ディスプレイ面に直交する方向に表示深度を持つポインタ画像を、ディスプレイに表示される前記立体視画像に対して、所定の描画レートで合成するグラフィカルユーザインターフェイス手段とを備え、
グラフィカルユーザインターフェイス手段は、第1描画サイクルでのポインタ画像の表示深度と、当該第1描画サイクルの次の第2描画サイクルでのポインティング位置における前記立体視画像の表示深度とが異なる場合、第2描画サイクル以後の連続した複数描画サイクルにおいて、第1描画サイクルでのポインタ画像の表示深度から第2描画サイクルでのポインティング位置における前記立体視画像の表示深度まで、表示深度を順に変化させてポインタ画像を描画する
半導体集積回路。 - 立体視画像表示方法であって、
左目用画像と右目用画像とから構成される立体視画像を、ディスプレイに表示するためのビデオメモリへ書き込む立体視画像表示ステップと、
ディスプレイ面に並行な直交座標系におけるポインティング位置を受け付ける受付ステップと、
ディスプレイ面に直交する方向に表示深度を持つポインタ画像を、前記ビデオメモリに書き込まれている立体視画像に対して、所定の描画レートで合成するポインタ画像合成ステップとを含み、
ポインタ画像合成ステップでは、第1描画サイクルでのポインタ画像の表示深度と、当該第1描画サイクルの次の第2描画サイクルでのポインティング位置における前記立体視画像の表示深度とが異なる場合、第2描画サイクル以後の連続した複数描画サイクルにおいて、第1描画サイクルでのポインタ画像の表示深度から第2描画サイクルでのポインティング位置における前記立体視画像の表示深度まで、表示深度を順に変化させてポインタ画像を描画する
立体視画像表示方法。
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