WO2006009314A1 - 画像表示方法、画像表示装置、光散乱手段及び画像表示プログラム - Google Patents
画像表示方法、画像表示装置、光散乱手段及び画像表示プログラム Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 100
- 230000003287 optical effect Effects 0.000 title abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 138
- 238000003702 image correction Methods 0.000 claims abstract description 53
- 238000012937 correction Methods 0.000 claims abstract description 19
- 238000000149 argon plasma sintering Methods 0.000 claims description 125
- 230000001360 synchronised effect Effects 0.000 claims description 10
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 6
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- 238000003384 imaging method Methods 0.000 description 13
- 230000015572 biosynthetic process Effects 0.000 description 12
- 238000012545 processing Methods 0.000 description 8
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- 238000003199 nucleic acid amplification method Methods 0.000 description 7
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3185—Geometric adjustment, e.g. keystone or convergence
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3191—Testing thereof
- H04N9/3194—Testing thereof including sensor feedback
Definitions
- Image display method image display device, light scattering means and image display program
- the present invention relates to an image display method, an image display device, a light scattering unit, and an image display program.
- An image projection type image display apparatus has, for example, a feature that the degree of freedom in image display is extremely high as compared with a direct view type image display or apparatus using a plasma display panel or a liquid crystal display panel. doing.
- the size of the display screen is the size of the display device, and the display device is manufactured using a large thin glass plate as a substrate.
- an image projection type image display apparatus a projection image obtained by transmitting or reflecting light to a small electro-optical modulator such as a small liquid crystal device or a micromirror light modulator is obtained.
- a screen of any size can be easily realized by enlarging the light by a projection optical system and projecting the light to a light scattering means such as a screen. Also, the brightness of the display screen can be changed relatively easily by the light source used.
- Such degrees of freedom in image display can be obtained by separating the light source, the electro-optical modulator, the projection optical system, and the like. In other words, a great variety of image display methods and image display devices can be realized as a combination of them.
- distortion of a projected image is a form of degradation in display image quality that can not occur in direct-view image display devices.
- the distortion of this projection image is It occurs when the positional relationship between the system and the light scattering means is not appropriate or when their positional relationship changes.
- an image display method for correcting the projection image using an imaging means for example, Patent Document 1 and 2
- an imaging means for example, Patent Document 1 and 2
- the relative rotation angle around the projection axis of the projector unit as the image projection means and the screen as the light scattering means is ⁇
- the projection unit is projected from the projector unit.
- the correction formula for the projected image is shown, where the vertical intersection angle between the projection image and the screen is ⁇ , and each horizontal intersection between the projection image projected from the projector unit and the screen is ⁇ . (See Formulas (2) to (4) of Patent Document 1 and FIG. 2).
- a digital camera as an imaging means is used to detect these three angles.
- Patent Document 1 a large number of minute light detection means (light sensors) are disposed in the effective image display area of the screen, and the light detection means irradiated with light is detected.
- An image display method for grasping the projection state of an image on a screen is also disclosed.
- the projection from the projector unit is performed by installing the digital camera as the image pickup means directly opposite to or in parallel with the projector unit as the image projection means.
- This is a method of detecting distortion in an image and displaying a projection image with distortion corrected on a screen as a light scattering means.
- Patent Document 1 Japanese Patent Application Laid-Open No. Hei 9-1 3 2 6 9 8 1
- Patent Document 2 Japanese Patent Application Laid-Open No. 200002 1 859 8 7 Disclosure of the Invention
- the present invention can accurately detect a correction parameter that accurately reflects distortion of a projected image, and an image display method and an image display that do not cause degradation of display image quality due to the presence of light detection means. It is an object of the present invention to provide a device and a light scattering means and an image display program suitably used for such an image display device.
- the image display method of the present invention is an image display method for displaying a display image on the light scattering means by causing the light scattering means to scatter a projected image projected from the image projection means, the light scattering Means for projecting a control image used to correct a display image to be projected from the image projection means toward the light scattering means, and a plurality of images provided outside the effective image display area of the light scattering means Detecting the control image by the light detection means; generating an image correction signal based on a detection signal of the control image by the light detection means; correcting based on the image correction signal Projecting the projected image on the light scattering means.
- the above control image is projected onto the image projection means
- the control image is detected by a plurality of light detection means provided outside the effective image display area of the light scattering means, and the control image is detected by the light detection means based on the detection signal of the control image. Since the image correction signal is generated, the image correction signal can be generated without using an imaging means. As a result, it is possible to solve the problem of distortion of the projected image due to the use of the imaging means and the problem that it is not possible to accurately detect correction parameters that accurately reflect the distortion of the projected image. It becomes possible to accurately detect correction parameters that accurately reflect image distortion.
- the plurality of light detection means described above are provided outside the effective image display area of the light scattering means, it is possible to use the light scattering means of either the transmissive screen or the reflective screen. Even if there is, the presence of the light detection means does not cause deterioration of the display image quality.
- the light scattering means used in the image display method of the present invention may be any light scattering means that displays a display image by scattering a projection image projected from the image projection means.
- a screen is preferably used. Can.
- any image projection means may be used as long as it projects the projection image according to the display image data relating to the display image to be projected.
- a projector is preferably used. it can.
- an optical sensor can be used suitably, for example.
- the light detection means is provided along the peripheral edge of the effective image display area.
- the light detection means is provided in the same plane as the light scattering means.
- control image may be a vertical linear image extending in the vertical direction and a horizontal line extending in the horizontal direction.
- the longitudinal linear image is scanned along the lateral direction of the light scattering means, and the lateral linear image is scanned along the longitudinal direction of the light scattering means.
- the actual position of the light detection means in the light scattering means and the virtual position of the light detection means in the image forming area of the electro-optical modulator can be accurately correlated.
- control image is a frame-like image projected outside the effective image display area.
- control image is not projected within the effective image display area. Therefore, while projecting the projection image, distortion of the projection image caused by displacement of the image projection means is detected in real time. You will be able to
- Such a method makes it possible to perform image correction in real time while projecting a display image.
- the size of the control image is periodically changed by a predetermined reference signal.
- the predetermined reference signal by performing synchronous detection amplification on the detection signal of the control image and the predetermined reference signal, only the component synchronized with the reference signal is amplified out of the detection signal of the control image, and the control image is generated. Is preferably detected.
- the image display apparatus of the present invention comprises: an image input unit for inputting display image data relating to a display image to be projected; and display image data to be input to the image input unit
- An image display apparatus comprising: an image projection means for projecting a projection image according to the image; and a light scattering means for displaying a display image by scattering the projection image projected from the image projection means, Control image generation means for generating control image data related to a control image used to correct a display image, a plurality of light detection means provided outside the effective image display area of the light scattering means, An image correction signal generation means for generating an image capture signal based on a detection signal of the control image by the light detection means; and a complement of a display image to be projected onto the light scattering means based on the image correction signal. And image correction means for performing correction.
- the control image generated by the control image generation unit is detected by the plurality of light detection units provided outside the effective image display area, and the control image is detected by the light detection unit. Since the image correction signal generation unit generates the image capture signal based on the detection signal of the image, the image correction signal can be generated without using the imaging unit. As a result, it is possible to accurately detect correction parameters that accurately reflect the distortion of the projected image.
- the display image quality is not deteriorated due to the presence of the light detection means.
- the above-described image display method of the present invention has preferable features.
- the image projection unit includes a plurality of image projection units, and the image correction unit corrects the display image projected by each image projection unit. It is preferable to have a function.
- the light scattering means of the present invention is a light scattering means for use in the image display device according to the above (8) or (9), wherein a plurality of light detection means are provided outside the effective image display area. It is characterized by having.
- an image display apparatus is configured using the light scattering means of the present invention and the image projection means. By this, it becomes possible to obtain the effects described in the above (8).
- An image display program is an image display apparatus for displaying a display image on the light scattering means by causing the light scattering means to scatter a projected image projected from the image projection means. Projecting a control image from the image projection means toward the light scattering means; and correcting the display image to be projected on the plurality of images provided outside the effective image display area of the light scattering means. Detecting the control image by the light detection means; generating an image capture signal based on a detection signal of the control image by the light detection means; and based on the image capture signal. And projecting the corrected image to the light scattering means.
- FIG. 1 is a view showing the configuration of an image display apparatus 10 according to the first embodiment.
- FIG. 2 is a view showing the configuration of the light scattering means 6 according to the first embodiment.
- FIG. 3 is shown to explain the respective positions of the effective image display area 31 ', the projectable area 32 and the light detection means 7 when they are associated as positions on the image forming area of the electro-optical modulation device.
- FIG. 4 is a view for explaining a method of correlating the lateral position of each light detection means 7 in the light scattering means 6 with the lateral position on the image formation area of the electro-optical modulator.
- FIG. 5 is a view for explaining a method of correlating the vertical position of each light detection means 7 in the light scattering means 6 with the vertical position on the image formation area of the electro-optical modulator.
- Fig. 6 is for correcting distortion of the display image to be projected to the effective image display area 31. It is a figure shown in order to demonstrate the method of obtaining a correction parameter.
- FIG. 7 is a diagram for explaining a method of obtaining a correction parameter for correcting distortion of a display image to be projected to the effective image display area 31.
- FIG. 8 is a flow chart showing an image correction processing procedure used in the image display method according to the first embodiment.
- FIG. 9 is a view showing the configuration of an image display apparatus 12 according to a second embodiment.
- FIG. 10 is a diagram showing an example of tiling projection on the light scattering means 6 using a plurality of image projection means 5.
- FIG. 11 is a view showing a case where the image projection means 5 faces the light scattering means 6 directly.
- FIG. 12 is a view showing a case where the image projection means 5 is inclined from the position directly opposite to the light scattering means 6 by the inclination angle ⁇ .
- Fig. 13 shows the ratio of the distance from the optical axis of the image projection means 5 to both ends of the effective image display area 31 as a function of the angle ⁇ when the projection angle ⁇ is 60 degrees. .
- FIG. 14 is a view schematically showing a state in which the image forming area of the electro-optical modulator is rotated relative to the light scattering means 6 by the rotation angle ⁇ around the y axis.
- Figure 15 shows the situation where the image forming area of the electro-optic modulator is rotated relative to the light scattering means 6 by a rotation angle ⁇ 1 around the y axis and a rotation angle ⁇ 2 around the X axis. It is the figure shown typically. ⁇ ⁇ .
- FIG. 16 is a diagram showing that it is possible to determine the rotation angle of the side having an arbitrary direction of the effective image display area 31 in the image forming area of the electro-optical modulator.
- FIG. 17 is a view for explaining a method of determining the coordinates of one remaining vertex of the effective image display area 31 in the image forming area of the electro-optical modulator of one image projection means 5. .
- FIG. 18 is a flowchart showing an image correction processing procedure used in the image display method according to the second embodiment.
- FIG. 19 is a diagram showing the configuration of an image display apparatus 14 according to a third embodiment.
- FIG. 20 is a view showing a projection state of the projection image in the light scattering means 6.
- FIG. 21 is a diagram showing the configuration of an image display apparatus 16 according to a fourth embodiment.
- FIG. 22 is a figure shown in order to explain the image display method according to the fourth embodiment.
- FIG. 23 is a diagram shown to explain reference signals used in the image display method according to the fourth embodiment.
- FIG. 24 is a view schematically showing a state in which the light detection means 7 detects light in a state in which the scattered light from the projection image is superimposed on the frame-like image 43.
- FIG. 25 is a diagram shown to explain an operation of amplifying a specific frequency signal on the frequency axis.
- FIG. 26 schematically shows the principle by which the position of the light detection means 7 is measured based on the operation of the synchronous detection amplification means 9.
- FIG. 1 is a view showing the configuration of an image display apparatus 10 according to the first embodiment.
- the image display apparatus 10 includes an image input unit 1 for inputting display image data relating to a display image to be projected, and a display to be input to the image input unit 1.
- An image projection means 5 for projecting a projection image according to image data, and a light scattering means 6 for displaying a display image by scattering the projection image projected from the image projection means 5 are provided.
- the image projection means 5 has an electro-optical modulator for modulating light from the light source according to display image data to generate image light.
- the electro-optical modulation device a transmissive or reflective liquid crystal device or a micro mirror light modulation device can be suitably used.
- the light scattering means 6 a transmissive or reflective screen can be suitably used.
- the image display apparatus 10 includes a control image generation unit 4 that generates control image data related to a control image used to correct a display image to be projected;
- a control image generation unit 4 that generates control image data related to a control image used to correct a display image to be projected;
- the effective image display area 3 1 (refer to FIG. 2 described later) in the means 6, a plurality of light detection means 7 provided outside, and a detection signal of a control image by the light detection means 7
- the light detection means 7 is a zero-dimensional light detection means.
- the display image data input to the image input means 1 is subjected to correction such as distortion by the image correction means 2.
- the control image generation means 4 generates control image data relating to the control image used to correct the display image to be projected.
- the projection image according to the display image data and the control image according to the control image data are projected from the image projection means 5 toward the light scattering means 6 simultaneously or separately.
- the display image data corrected by the image correction means 2 becomes a projection image to be provided to the viewer.
- the image correction signal generation means 3 when the control image is detected by the light detection means 7, the image correction signal generation means 3 generates an image correction signal based on the detection signal of the control image by the light detection means 7.
- the image correction means 2 corrects the display image to be projected to the light scattering means 6 based on the image correction signal generated by the image correction signal generation means 3.
- FIG. 2 is a view showing the configuration of the light scattering means 6 according to the first embodiment.
- FIG. 2 exemplifies a case where the image projection means 5 is arranged so as to project the projection image from the diagonally left direction of the light scattering means 6.
- the light detection means 7 is provided substantially in the same plane as the projection plane of the light scattering means 6 will be shown.
- the light scattering means 6 according to the embodiment 1 is, as shown in FIG. 2, outside the effective image display area 31 of the image projection means 5 in the light scattering means 6 and in the image projection means 5 in the light scattering means 6.
- a projectable area 3 2 In the projectable area (hereinafter referred to as a projectable area) 3 2, a plurality of light detection means 7 are provided.
- the positional relationship between the effective image display area 31 and the plurality of light detection means 7 is fixed.
- the position of the effective image display area 31 can be estimated with sufficient accuracy based on the position of the light detection means 7.
- FIG. 3 shows the correspondence between the positions on the image forming area of the electro-optical modulation device
- FIG. 7 is a view for explaining positions of an effective image display area 31, a projectable area 32 and a light detection unit 7.
- the position of the effective image display area 31 which is rectangular in the light scattering means 6 is associated with the position on the image formation area of the electro-optical modulator, as shown in FIG. It is not rectangular in the imaging area of the device. This is because, as shown in FIG. 2, the image projection means 5 is disposed at an angle to the light scattering means 6.
- the position of each light detection means 7 is also correlated as a position on the image formation area of the electro-optical modulator, it becomes a position as shown in FIG.
- each light detection means 7 in the light scattering means 6 are the vertical position in the image forming area of the electro-optical modulator and An example of the method of mapping as a lateral position will be described with reference to FIGS. 4 and 5.
- FIG. 4 An example of the method of mapping as a lateral position will be described with reference to FIGS. 4 and 5.
- FIG. 4 is a view for explaining a method of correlating the lateral position of each light detection means 7 in the light scattering means 6 with the lateral position in the image forming area of the electro-optical modulation device.
- FIG. 5 is a view for explaining a method of correlating the vertical position of each light detection means 7 in the light scattering means 6 with the vertical position in the image formation area of the electro-optical modulator.
- a vertical linear image 41 extending in the vertical direction As a control image used to correct a display image to be projected to the light scattering means 6, a vertical linear image 41 extending in the vertical direction, A horizontal line image 42 extending in the direction is used.
- one line (longitudinal linear image 41) represented by the bright line or dark line is Scan in the X direction in Fig. 4 (A). That is, as shown in FIG. 4 (A) to FIG. 4 (B), the vertical linear image 41 is scanned, and when the vertical linear image 41 comes to which position the light detection means 7 responds By detecting the presence or absence, the lateral position of each light detection means 7 in the light scattering means 6 can be correlated as the lateral position in the image formation area of the electro-optical modulator.
- one line (horizontal linear image 4 2) represented by a bright line or a dark line.
- the horizontal linear image 42 is scanned, and when the horizontal linear image 42 comes to which position the light detection means 7 responds
- the vertical position of each of the light detection means 7 in the light scattering means 6 can be correlated as the vertical position in the image formation area of the electro-optical modulator by detecting the temperature.
- each light detection means 7 in the light scattering means 6 corresponds to It is possible to know the position (X coordinate and y coordinate) of each light detection means 7 in the image forming area of the electro-optical modulator.
- the control image when the control image is detected by the light detection unit 7, the control image is scanned across the entire projectable area 32 of the light scattering unit 6 as an example.
- the position of the light detection means 7 when the position of the light detection means 7 can be estimated, it is sufficient that only the running glide in the vicinity of the estimated position. In this case, it is also possible to scan only outside the effective image display area 31.
- the positional relationship between the light detection means 7 in the light scattering means 6 and the effective image display area 31 is known without loss of generality.
- the light detection means 7 is installed along the effective image display area 31.
- the vertical linear image 41 is scanned in the horizontal direction, and the horizontal linear image 42 is scanned in the vertical direction, so that the positions of the respective light detection means 7 in the light scattering means 6 are detected. Since it is possible to know the position of each light detection means 7 in the image formation area of the electro-optical modulation device, the image of the electro-optical modulation device corresponding to the position of the effective image display area 31 in the light scattering means 6 The position of the effective image display area 3 1 in the formation area can also be estimated with sufficient accuracy. Therefore, in the following description, it is assumed that the estimation of the position of the light detection means 7 and the estimation of the position of the effective image display area 31 in the image forming area of the electro-optical modulator are equal.
- FIGS. 6 and 7 are diagrams for explaining a method of obtaining a correction parameter for correcting distortion of a display image to be projected to the effective image display area 31.
- FIG. 6 with an arbitrary point p as the origin, the positions of the four corners of the effective image display area 31 in the image forming area of the electro-optical modulator are represented by position vectors a, b, c, d. . Further, in FIG.
- the coordinates of a point of the effective image display area 31 in the light scattering means 6 are taken as coordinates (x, y), and the range of values of ⁇ and y is vertical. And in each of the lateral directions, it is assumed that they are normalized from 0 to 1.
- the coordinates (x, y) of a point on the effective image display area 31 in the light scattering means 6 shown in FIG. 7 correspond to the positions shown in FIG. 6 in the image forming area of the electro-optical modulator. There is.
- the coordinates of each point of the effective image display area 3 1 in the light scattering means 6 are converted into the coordinates of the image formation area of the electro-optical modulator using this equation (1), and the correction parameters (image By generating a correction signal and correcting the display image to be projected to the light scattering means 6, it becomes possible to display a display image without distortion in the effective image display area 31 in the light scattering means 6. .
- this equation (1) it is assumed that distortion is small, and linear approximation is performed.
- FIG. 8 is a flowchart showing an image correction processing procedure used in the image display method according to the first embodiment.
- the image correction processing procedure used in the image display method according to the first embodiment outputs a control image for X coordinate detection as shown in FIG. 8 (step S1). This is an operation of scanning the vertical linear image 41 in the horizontal direction, as described above. As a result, the X coordinates of all the light detection means 7 are detected (step S2). Similarly, it outputs a control image for y-coordinate detection. Tep S 3). This is an operation of scanning the horizontal linear image 42 in the vertical direction. By this, the y-coordinates of all the light detection means 7 are detected (step S 4).
- the coordinates of the four corners of the effective image display area 31 in the image forming area of the electro-optical modulator are calculated based on the X coordinate and the y coordinate of all the light detection means 7 detected in this manner (Ste S 5). Then, the calculated coordinates of the four corners of the effective image display area 31 are set as the image correction signal in the image correction means 2 (step S 6). .
- the control images (vertical linear image 41 and horizontal linear image 42) are directed from the image projection means 5 to the light scattering means 6.
- the control image is detected by a plurality of light detection means 7 provided outside the effective image display area 31 in the light scattering means 6, and the detection signal of the control image by the light detection means 7 is detected. Since the image correction signal is generated, the image correction signal can be generated without using the imaging means. As a result, it is possible to solve the problem of distortion of the projected image caused by using the imaging means and the problem that it is not possible to accurately detect the correction parameter that accurately reflects the distortion of the projected image. Correction parameters that accurately reflect image distortion can be detected.
- any light scattering means of the transmission type screen and the reflection type screen may be used. Even when used, the presence of the light detection means does not cause deterioration of the display image quality.
- FIG. 9 is a view showing the configuration of an image display apparatus 12 according to a second embodiment.
- the same members as in FIG. 1 are assigned the same reference numerals and detailed explanations thereof will be omitted. .
- the image display apparatus 12 according to the second embodiment is different from the image display apparatus 10 according to the first embodiment in that a plurality of image projection means 5 are used as shown in FIG.
- the components are the same as those of the image display device 10 according to the first embodiment.
- Figure 10 Tiling projection to light scattering means 6 using multiple image projection means 5 It is a figure which shows an example.
- the effective image display area 31 'in the light scattering means 6 indicates the entire effective image display area by the four image projection means 5, and the effective image display area of each image projection means 5 3 1 Thus, the entire effective image display area 31 'is formed. .
- the projected image is tiled and projected from a total of four image projectors 5 in total of 2 units for 2 units in each of the vertical and horizontal directions. It is possible to almost quadruple the number of pixels and quadruple the brightness of the entire display area.
- the image display method according to the second embodiment is different from the image display method according to the first embodiment in that it is apparent from FIG. Only the positions of two sides of 1 can be estimated by the output of the light detection means 7. As described in the image display method according to the first embodiment, in order to correct the projection image projected from the image projection means 5, four corners (hereinafter referred to as vertices) in the effective image display area 31 are used. The coordinates of the position of) are required. In the image display method according to the second embodiment, only the coordinates of the three vertices of the effective image display area 31 of each of the image projection means 5 can be directly obtained, so that an image correction signal can not be obtained. Become.
- FIG. 11 is a view showing a case where the image projection means 5 faces the light scattering means 6 directly. 0 indicates the projection angle of the image. In FIG. 11, for simplicity of explanation, it is assumed that the optical axis and the midpoint of the effective image display area coincide with each other.
- the projection by the image projection means 5 is symmetrical in the left-right direction of FIG. 11, and from the optical axis of the image projection means 5 to the left end of the effective image display area 31 in the light scattering means 6 Distance A is
- FIG. 12 is a view showing the case where the image projection means 5 is inclined by an angle ⁇ from the position directly opposite to the light scattering means 6. Also in FIG. 12, as in the case of FIG. 11, it is assumed that the optical axis and the midpoint of the effective image display area coincide with each other.
- Figure 14 is to illustrate that.
- FIG. 14 is a view schematically showing a state in which the image forming area of the electro-optic modulator is rotated relative to the light scattering means 6 by the rotation angle ⁇ about the y axis.
- FIG. 14 (A) schematically shows the position of the effective image display area in the image forming area of the electro-optical modulator
- FIG. 14 (B) shows the image forming area of the electro-optical modulator as light scattering means 6
- it is a top view shown to explain a state where it is relatively rotated about the y axis by the rotation angle ⁇ .
- the position of the light detection means 7 (shown by a black dot in FIG. 14A) is detected as a position as shown in FIG. 14A in the image forming area of the electro-optical modulator. I suppose.
- the positions of the middle point and both ends of each side of the effective image display area 31 in the image forming area of the electro-optical modulator correspond to the positions of the respective light detection means 7 in the light scattering means 6.
- the ratio (2 bZa) of the distance a to the distance b is 1, and the rotation angle around the X axis in this case is 0.
- Figure 15 shows the situation where the image forming area of the electro-optic modulator is rotated relative to the light scattering means 6 by a rotation angle ⁇ 1 around the y axis and a rotation angle ⁇ 2 around the X axis. It is a figure shown typically. In the case of FIG. 15, as in the case of FIG.
- the rotation angles ⁇ 1 and ⁇ 2 of each of the two axes (X axis and y axis) can be determined. This makes it possible to obtain the rotation angle of the side having an arbitrary direction of the effective image display area 3 1 in the image forming area of the electro-optical modulator.
- FIG. 16 is a diagram showing that it is possible to obtain the rotation angle ′ of the side having an arbitrary direction of the effective image display area 31 in the image forming area of the electro-optical modulator.
- FIG. 17 is a view for explaining a method of determining the coordinates of one remaining vertex of the effective image display area 31 in the image forming area of the electro-optical modulator of one image projection means 5. .
- each light detection means in the image forming area of the electro-optic modulator corresponding to the position of each light detection means 7 in the light scattering means 6 according to the method described in the image display method according to the first embodiment.
- the position of is assumed to be determined.
- the image projection means 5 which takes charge of the effective image display area 31 in the upper right of the entire effective image display area 31 '(see FIG. 10) in the light scattering means 6 will be taken as an example.
- the rotation angles of two sides L l and L 2 shown in FIG. 17 ( ⁇ ) can be determined as described above.
- FIG. 17 (B) find a diagonal L 3 connecting the two sides L 1 and L 2. The rotation angle of this diagonal L 3 can be determined as described above.
- the middle point m of the diagonal L 3 can be determined. This is because, as described in the explanation of FIG. 13, if the rotation angle is determined, the ratio of the lengths on both sides of the middle point m is determined.
- the line passing from the origin O of the two sides L 1 and L 2 to the midpoint m becomes the diagonal L 4 that defines the direction of the remaining one vertex.
- the rotation angle of the diagonal line L 4 can also be determined. Once the rotation angle of the diagonal L 4 is determined, the position P i of the tip of the diagonal L 4 can be determined based on the ratio determined by this rotation angle, and the position P i force and the fourth vertex position to be determined become.
- FIG. 18 shows an image correction processing method used in the image display method according to the second embodiment. It is a flowchart showing the order.
- the image correction processing procedure used in the image display method according to the second embodiment first detects the X coordinate and the y coordinate of all the light detection means 7 (step S 11) . Then, it is judged whether or not the image correction signal has been generated for all the image projection means 5 (step S 12), and if the image correction signal has been generated for all the image projection means 5, the processing is ended.
- Step S 1 If the image correction signal is not generated for all the image projection means 5 in step 12, the light detection means 7 adjacent to the effective image display area 3 1 of the image projection means 5 to be processed is selected ( Step S 1 3) The angle of rotation of two sides of the effective image display area in the image forming area of the electro-optical modulator of the image projection means 5 is determined (step S 1 4) Find the midpoint of (step S 15). Then, a diagonal that shares the two sides and the start point (origin) is determined (step S 16), and the end point coordinates of the determined diagonal are determined (step S 17). Coordinates of four points including the end point are used as an image correction signal (step S 18).
- the image correction means 2 can be provided as an image correction signal. By this, it is possible to correct the projected image to be projected by each image projection means 5.
- FIG. 19 is a diagram showing the configuration of an image display apparatus 14 according to a third embodiment.
- FIG. 20 is a view showing a projection state of a projection image in the light scattering means 6.
- the same members as in FIG. 1 will be assigned the same reference numerals and detailed explanations thereof will be omitted.
- the image display device 14 according to the third embodiment includes the point that the control image is a frame-like image and the image combining unit, and the image display device 1 according to the first embodiment. Although the configuration is different from 0, the other configuration is the same as that of the image display device 10 according to the first embodiment.
- control image generation unit 4 is a control related to a control image used to correct a display image to be projected to the light scattering unit 6.
- control image data relating to a frame-shaped control image (hereinafter referred to as a frame-like image) 4 is generated as control image data.
- the image combining means 8 is further provided.
- the image synthesizing means 8 synthesizes the control image data relating to the frame-like image 43 generated by the control image generating means 4 with the display image data corrected by the image correcting means 2 and generates control image data. And has a function of outputting display image data to the four image projection means 5.
- the control image is a frame-like image projected outside the effective image display area 31. Since it is 3, the control image is not projected within the effective image display area. For this reason, it is possible to detect in real time the distortion of the projected image caused by the displacement of the image projection means while projecting the projected image.
- the frame-like image 43 described above has a rectangular shape along the periphery of the effective image display area 31.
- the frame-like image 43 is projected on the light scattering means 6 so as to be detectable by all the light detection means 7.
- FIG. 20 (A) the state in which the frame-like image 43 is detected by all the light detection means 7 and the detection signal is output from all the light detection means 7 is appropriate for the displayed image. It is assumed that image correction is performed.
- the image display device 14 according to the third embodiment is an image display device provided with one image projection unit 5, but the image display device 14 according to the second embodiment.
- an image provided with a plurality of image projection means 5 It can also be an image display device.
- the light detection means 7 in the light scattering means 6 is disposed around the entire effective image display area 31 of the plurality of image projection means 5.
- the control image does not necessarily have to be a frame-like image, and the image projection means 5 is, for example, arranged in two vertical and two horizontal as in the case of the image display device 12 according to the second embodiment. In this case, it is possible to form an L shape corresponding to adjacent two sides out of the four sides of the rectangle.
- FIG. 21 is a diagram showing the configuration of an image display apparatus 16 according to a fourth embodiment.
- the same members as in FIG. 19 are assigned the same reference numerals and detailed explanations thereof will be omitted.
- the image display device 16 according to the fourth embodiment is different from the image display device 16 according to the third embodiment in that the image display device 16 according to the fourth embodiment further includes a synchronous detection and amplification means as shown in FIG.
- the configuration of is the same as that of the image display device 16 according to the third embodiment.
- the image display device 16 according to the third embodiment for example, when the projection image and the control image are simultaneously projected to the light scattering means 6, the light scattering means 6 generates scattered light from the projection image. Since the light detection means 7 detects such scattered light, the control image may not be detected properly.
- the synchronous detection amplification means 6 since the synchronous detection amplification means 6 is further provided, the influence of such scattered light can be eliminated.
- FIG. 22 is a figure shown in order to explain the image display method according to the fourth embodiment.
- FIG. 23 is a diagram shown to explain reference signals used in the image display method according to the fourth embodiment.
- a frame-shaped image 4 as a control image. It is characterized in that the position of 3 changes with time. That is, the frame-like image 43 is modulated by the reference signal (in the image display method according to the fourth embodiment, a sine wave as shown in FIG. 23). Thus, the frame-like image 43 is periodically The scaling is repeated to periodically cross the light detection means 7.
- the detection signal of the frame-like image 43 by the light detection means 7 and the reference signal are input to the synchronous detection / amplification means 9, whereby the detection signal of the frame-like image 43 by the light detection means 7 is referred to Only the detection signal to be synchronized is amplified.
- FIG. 24 is a view schematically showing a state in which the light detection means 7 detects light in a state in which the scattered light from the projection image is superimposed on the frame-like image 43.
- the synchronous detection and amplification means 9 multiplies the signal as shown in FIG. 24 by the reference signal (sine wave) shown in FIG. 23 and integrates and amplifies it. This is equivalent to amplifying a specific frequency signal on the frequency axis.
- FIG. 25 is a diagram for explaining an operation of amplifying a specific frequency signal on the frequency axis. In the example shown in FIG. 25, only the signal S in the portion enclosed by the broken line is amplified.
- FIG. 26 schematically shows the principle by which the position of the light detection means 7 is measured based on the operation of the synchronous detection amplification means 9. That is, the frame-like image 43 modulated can be uniquely associated with the display position of the frame-like image 43. '
- FIG. 26 (A) when the frame-like image 43 is detected by the light detection means 7 corresponding to the position of the positive peak, the position of the light detection means is modulated. It will be near the edge of image 43.
- Fig. 2 6 (B) when a peak is detected near the origin of the square wave, the position of the light detection means 7 is located near the center of the modulated frame-like image 43. Become.
- Fig. 2 6 (C) when it is detected near the negative peak of the sine wave, it is near the end opposite to the side opposite to Fig. 2 6 (A) in the frame-like image 43. It will be there. In this way, it is possible to obtain a control image that minimizes the influence of scattered light from the effective image display area 31.
- the light detection means 7 can detect the control image with high accuracy without being affected by the scattered light from the effective image display area 31. If the detection signal of the appropriate control image is obtained from the light detection means 7, the image correction signal can be generated using the detection signal.
- the image display apparatus 16 according to the fourth embodiment is an image display apparatus provided with one image projection unit 5 as in the case of the image display apparatus 14 according to the fourth embodiment.
- the image display device may be provided with a plurality of image projection means 5.
- the light detection means 7 in the light scattering means 6 is disposed around the effective image display area 31 1 of the plurality of image projection means 5 as in the case of the image display device 12 according to the second embodiment.
- the control image does not necessarily have to be a frame-like image, and the image projection means 5 is arranged in two vertical and two horizontal as in the case of the image display 12 according to the second embodiment, for example. In this case, it is possible to form an L shape corresponding to two adjacent sides among the four sides of the rectangle.
- the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.
- an image display program is described in which a processing procedure for realizing the image display program used in the image display apparatus of the present invention described above is created, and the image display program is used as a flexible disk or an optical disk. It can also be recorded on a recording medium such as a hard disk. Therefore, the present invention also includes the image display program and a recording medium on which the image display program is recorded. Also, the image display program may be obtained from the network.
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- General Physics & Mathematics (AREA)
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- Projection Apparatus (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
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Abstract
Description
Claims
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JP2006527836A JPWO2006009314A1 (ja) | 2004-07-23 | 2005-07-21 | 画像表示方法、画像表示装置、光散乱手段及び画像表示プログラム |
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PCT/JP2005/013798 WO2006009314A1 (ja) | 2004-07-23 | 2005-07-21 | 画像表示方法、画像表示装置、光散乱手段及び画像表示プログラム |
Country Status (6)
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US (1) | US20060017890A1 (ja) |
JP (1) | JPWO2006009314A1 (ja) |
KR (1) | KR20070044464A (ja) |
CN (1) | CN1989766A (ja) |
TW (1) | TWI274513B (ja) |
WO (1) | WO2006009314A1 (ja) |
Cited By (1)
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JP2009290412A (ja) * | 2008-05-28 | 2009-12-10 | Nikon Corp | プロジェクタ及びマルチプロジェクションシステム |
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JP2005033703A (ja) * | 2003-07-11 | 2005-02-03 | Seiko Epson Corp | 画像処理システム、プロジェクタ、プログラム、情報記憶媒体および画像処理方法 |
US7399086B2 (en) * | 2004-09-09 | 2008-07-15 | Jan Huewel | Image processing method and image processing device |
US20060274209A1 (en) * | 2005-06-03 | 2006-12-07 | Coretronic Corporation | Method and a control device using the same for controlling a display device |
JP2007078821A (ja) * | 2005-09-12 | 2007-03-29 | Casio Comput Co Ltd | 投影装置、投影方法及びプログラム |
US20070076171A1 (en) * | 2005-09-20 | 2007-04-05 | Fasen Donald J | Wobulator position sensing system and method |
JP4525945B2 (ja) * | 2007-08-07 | 2010-08-18 | セイコーエプソン株式会社 | 画像処理システム、プロジェクタ、プログラムおよび情報記憶媒体 |
US20090313151A1 (en) * | 2008-06-17 | 2009-12-17 | Searete Llc, A Limited Liability Corporation Of The State Of Delaware | Methods associated with projection system billing |
US20090309828A1 (en) * | 2008-06-17 | 2009-12-17 | Searete Llc, A Limited Liability Corporation Of The State Of Delaware | Methods and systems for transmitting instructions associated with user parameter responsive projection |
US20090313153A1 (en) * | 2008-06-17 | 2009-12-17 | Searete Llc, A Limited Liability Corporation Of The State Of Delaware. | Systems associated with projection system billing |
US8944608B2 (en) * | 2008-06-17 | 2015-02-03 | The Invention Science Fund I, Llc | Systems and methods associated with projecting in response to conformation |
US8955984B2 (en) * | 2008-06-17 | 2015-02-17 | The Invention Science Fund I, Llc | Projection associated methods and systems |
US8403501B2 (en) * | 2008-06-17 | 2013-03-26 | The Invention Science Fund, I, LLC | Motion responsive devices and systems |
US20090310039A1 (en) * | 2008-06-17 | 2009-12-17 | Searete Llc, A Limited Liability Corporation Of The State Of Delaware | Methods and systems for user parameter responsive projection |
US20090309826A1 (en) * | 2008-06-17 | 2009-12-17 | Searete Llc, A Limited Liability Corporation Of The State Of Delaware | Systems and devices |
US8733952B2 (en) * | 2008-06-17 | 2014-05-27 | The Invention Science Fund I, Llc | Methods and systems for coordinated use of two or more user responsive projectors |
US8540381B2 (en) * | 2008-06-17 | 2013-09-24 | The Invention Science Fund I, Llc | Systems and methods for receiving information associated with projecting |
US20090310103A1 (en) * | 2008-06-17 | 2009-12-17 | Searete Llc, A Limited Liability Corporation Of The State Of Delaware | Methods and systems for receiving information associated with the coordinated use of two or more user responsive projectors |
US8641203B2 (en) * | 2008-06-17 | 2014-02-04 | The Invention Science Fund I, Llc | Methods and systems for receiving and transmitting signals between server and projector apparatuses |
US8936367B2 (en) * | 2008-06-17 | 2015-01-20 | The Invention Science Fund I, Llc | Systems and methods associated with projecting in response to conformation |
US8602564B2 (en) * | 2008-06-17 | 2013-12-10 | The Invention Science Fund I, Llc | Methods and systems for projecting in response to position |
US8384005B2 (en) * | 2008-06-17 | 2013-02-26 | The Invention Science Fund I, Llc | Systems and methods for selectively projecting information in response to at least one specified motion associated with pressure applied to at least one projection surface |
US20110176119A1 (en) * | 2008-06-17 | 2011-07-21 | Searete Llc, A Limited Liability Corporation Of The State Of Delaware | Methods and systems for projecting in response to conformation |
US20100066983A1 (en) * | 2008-06-17 | 2010-03-18 | Jun Edward K Y | Methods and systems related to a projection surface |
US20090310098A1 (en) * | 2008-06-17 | 2009-12-17 | Searete Llc, A Limited Liability Corporation Of The State Of Delaware | Methods and systems for projecting in response to conformation |
US8267526B2 (en) * | 2008-06-17 | 2012-09-18 | The Invention Science Fund I, Llc | Methods associated with receiving and transmitting information related to projection |
US8608321B2 (en) * | 2008-06-17 | 2013-12-17 | The Invention Science Fund I, Llc | Systems and methods for projecting in response to conformation |
US8308304B2 (en) * | 2008-06-17 | 2012-11-13 | The Invention Science Fund I, Llc | Systems associated with receiving and transmitting information related to projection |
US20090313152A1 (en) * | 2008-06-17 | 2009-12-17 | Searete Llc, A Limited Liability Corporation Of The State Of Delaware | Systems associated with projection billing |
US8723787B2 (en) * | 2008-06-17 | 2014-05-13 | The Invention Science Fund I, Llc | Methods and systems related to an image capture projection surface |
JP5493438B2 (ja) * | 2009-04-10 | 2014-05-14 | 株式会社ニコン | 投影装置および投影像補正プログラム |
FR2959023B1 (fr) * | 2010-04-20 | 2012-05-25 | Thales Sa | Systeme de visualisation multi-projecteurs asservi |
JP5910440B2 (ja) * | 2012-09-28 | 2016-04-27 | ソニー株式会社 | 画像出力装置、画像出力方法、およびプログラム |
CN110428793B (zh) * | 2019-07-09 | 2021-02-23 | 武汉精立电子技术有限公司 | 一种亮度校正系统及方法 |
CN111625151B (zh) * | 2020-06-02 | 2023-07-21 | 吕嘉昳 | 基于触摸方法准确识别变形投影中触点位置的方法及系统 |
CN113934089A (zh) * | 2020-06-29 | 2022-01-14 | 中强光电股份有限公司 | 投影定位系统与其投影定位方法 |
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- 2005-07-20 US US11/184,977 patent/US20060017890A1/en not_active Abandoned
- 2005-07-21 CN CNA2005800249780A patent/CN1989766A/zh active Pending
- 2005-07-21 WO PCT/JP2005/013798 patent/WO2006009314A1/ja active Application Filing
- 2005-07-21 JP JP2006527836A patent/JPWO2006009314A1/ja not_active Withdrawn
- 2005-07-21 KR KR1020077004159A patent/KR20070044464A/ko not_active Application Discontinuation
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TW200607346A (en) | 2006-02-16 |
JPWO2006009314A1 (ja) | 2008-07-31 |
US20060017890A1 (en) | 2006-01-26 |
CN1989766A (zh) | 2007-06-27 |
TWI274513B (en) | 2007-02-21 |
KR20070044464A (ko) | 2007-04-27 |
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