CN1892756A - Projection image position adjustment method - Google Patents

Abstract

To provide a method capable of executing position adjustment of projected images from a plurality of projectors and projected on a projection screen at a high speed, with less computation complexities, and high accuracy. The multi-projection display apparatus, capable of projecting projected images from the projectors onto the projection screen in a way of including a superimposing area includes an adjustment image data output device 12 that can output two adjustment image data with a pattern that the predetermined characteristics appear in their superposing area to two projectors PJ1, PJ2, when the two adjustment image data are projected from the two projectors among the projectors are projected at an appropriate positional relation; an evaluation value calculation device 13 that calculates the evaluation value associated with the characteristics, on the basis of imaged image data obtained by imaging the projected screen, when the two projectors project the two adjustment image data; and a position adjustment control device 14 that adjusts the position of the two projection images, on the basis of the evaluation value.

Description

The location regulation method of projected image

Technical field

The present invention relates to program and multi-projection display are being adjusted in the position of the position regulator of the location regulation method that constitutes the projected image that uses in the multi-projection display of a picture from the projector, image projection of a plurality of projector on the projecting plane, projected image, projected image.

Background technology

From the projected image of a plurality of projector tiling ground projection in or the multi-projection display of overlapping projection on the projecting plane by known.In this multi-projection display, the precision of the position adjustment of each projected image on the projecting plane brings very big influence for the quality of projected image.

For example, when being projected as example,, then exist in and produce discontinuous joint between each projected image, or the overlapping region seeming the problem that the quality of projected images such as bluring significantly worsens if the precision that the position is adjusted is low with tiling.

In order to tackle this problem, in multi-projection display, must carry out the position adjustment between each projected image, but carry out this position when adjusting by manual operations the user, existing needs many time and time, and needs skilled position to adjust the problem of the technology of operation.

For this reason, the various technology (for example, with reference to patent documentation 1, patent documentation 2) that make the position adjust robotization were proposed in the past.

Patent documentation 1 disclosed technology, utilize a plurality of resolution chart images (Luminance Distribution with chevron waveform) of camera projection on the projecting plane, obtain the representative position (center of chevron waveform) of a plurality of resolution charts respectively according to this captured image data, represent the position according to each that obtained, obtain the horizontal direction of position of intersecting point of the connecting line of the interval of each resolution chart image and each resolution chart image and adjacent pictures and the interval on vertical direction both sides or the side, use these measuring spaces to have which kind of offset.

And, patent documentation 2 disclosed technology, utilize two projector to show two adjustment figures, at lap demonstration concealed wire, these two adjustment figures are that the boundary member along adjacent projected image has black display part, side has two figures of white display part within it.And, the width of black display part is reduced gradually, utilize camera to take, according to the wide variety of this captured image data observation concealed wire, be the disappearance location storage of concealed wire boundary position.And, carry out the position adjustment profile phase of the projected image from each projection device in this boundary position coincide.

[patent documentation 1] TOHKEMY 2001-356005 communique

[patent documentation 2] TOHKEMY 2002-365718 communique

Patent documentation 1 disclosed technology is thought and can be used the camera head with resolution lower than the resolution of projected image to come detection position skew.But, need the complex image analyzing and processing in order to obtain offset.Therefore, need have the image data processing system of high throughput, and because operand is big, existence can not be carried out the problem that offset is fast adjusted.

In addition, if there is the high-resolution camera head of the resolution of not using the pixel unit with projected image in patent documentation 2 disclosed technology, just can not obtain the problem of boundary position accurately.

Summary of the invention

The objective of the invention is to, provide the position regulator of location regulation method, the projected image of projected image, the position of projected image to adjust program and multi-projection display, can carry out the position adjustment from the projected image of a plurality of projector of projection on the projecting plane fast and accurately with little operand.

(1) location regulation method of projected image of the present invention, use two adjustment images, adjust two projector from multi-projection display with the position of two projected images of mode projection on the projecting plane with overlapping region with a plurality of projector, it is characterized in that, the location regulation method of this projected image comprises: the 1st step, provide two adjustment view data to described two projector, these two adjustment are corresponding with image with described two adjustment with view data, described two adjustment have following figure with image, promptly, when described two adjustment are projected with suitable position relation with image, the regulation feature appears in described overlapping region; The 2nd step according to taking the photographed images data that obtain from the described projecting plane of described two adjustment of described two projector projections during with image, is calculated the evaluation of estimate that is associated with described feature; And the 3rd step, carry out the position adjustment of described two projected images according to described evaluation of estimate.

Like this, the adjustment that occurs the regulation feature when utilizing two projector to concern projection with suitable position in the overlapping region uses image projection on the projecting plane, the photographed images data that obtain with image according to two adjustment of taking institute's projection, calculate the evaluation of estimate that is associated with described feature, carry out set positions according to this evaluation of estimate, so can be fast and carry out the position adjustment of projected image accurately with little operand.

In addition, about described two adjustment images, can generate and adjust with image as two adjustment images, two adjustment that generated are offered two projector with image, but use image as adjusting, also can generate an adjustment image, cut apart this adjustment and offer two projector with image.

(2) in the location regulation method of aforementioned (1) described projected image, in preferred described the 2nd step, described two adjustment are moved with 1 pixel unit along continuous straight runs or vertical direction with image with at least one adjustment in the image, when making described adjustment move 1 pixel unit, just calculate described evaluation of estimate with image.

Thus, can calculate adjustment and whenever move the evaluation of estimate of 1 pixel unit, can realize that precision is the position adjustment of 1 pixel unit with image.

(3) in the location regulation method of aforementioned (1) or (2) described projected image, preferred described figure has the lines of the width corresponding with 1 pixel.

Like this, be lines by making two adjustment with the figure of image with width of 1 pixel, can be in observation when adjustment is moved 1 pixel unit with image owing to the overlapping feature that occurs of figure.Thus, can calculate evaluation of estimate definitely, can realize that precision is the position adjustment of 1 pixel unit based on 1 pixel unit.

(4) in aforementioned (1)～(3) in the location regulation method of each described projected image, preferred described feature is the pixel value in the described photographed images data.

Like this, coming representation feature by utilizing pixel value, can be character representation objective value.

(5) in the location regulation method of aforementioned (4) described projected image, preferred described evaluation of estimate is the pixel count of described pixel value more than or equal to threshold value, in described the 3rd step, is described pixel value maximum position more than or equal to the pixel count of threshold value, as the best projection position of described two projected images, carry out the position adjustment of described two projected images.

Like this, utilize and represent evaluation of estimate, only count pixel count, can easily and suitably carry out the judgement of best projection position more than or equal to the pixel count of threshold value.That is, two adjustment are big more with the coincidence degree of image, and are many more more than or equal to the pixel count of threshold value, so can easily and suitably carry out the judgement of best projection position.

(6) in the location regulation method of aforementioned (5) described projected image, be described threshold setting the corresponding value of color that just occurs with each graphics overlay in the image with described two adjustment preferably.

Thus,, occur adjusting with the different color of image with each by two adjustment each graphics overlay with image, thus can be according to the change in color degree, and the adjustment situation of position is promptly learnt in a glance.

(7) in the location regulation method of aforementioned (6) described projected image, preferred described two adjustment have the 1st figure based on the 1st color with an adjustment in the image with image, another is adjusted with image has the 2nd figure based on the 2nd color, set the value of described two adjustment respectively, make described the 1st color and the 2nd color when described the 1st figure and the 2nd graphics overlay, show white with red composition, green composition and the blue composition of image.

Like this, can pass through the value of each color component of setting R (redness), G (green), B (blueness), so that two adjustment are white in both overlapping region appearance with the figure separately of image, thereby can make two adjustment when quilt is suitably overlapping, occur white with image.

(8) in the location regulation method of aforementioned (7) described projected image, preferred described the 1st color is the color with strong relatively red composition and relative weak green composition, described the 2nd color be have strong relatively blue composition with relative a little less than the color of green composition.

For example this means and use in the image an adjustment, the pixel value of each color component (gray-scale value) is made as R=255, G=128, B=0, adjust with in the image at another, the pixel value of each color component (gray-scale value) is made as R=0, G=128, B=255, thereby overlapping by both, the white of the pixel value (gray-scale value) of each color component for R=255, G=255, B=255 can appear.In addition, because the influence of gamma (Gamma) characteristic of projector or camera head or lighting condition etc., the light characteristic of photographed images data can change sometimes, so the pixel value of G (green) can change because of lighting condition etc.

(9) in aforementioned (1)～(8), in the location regulation method of each described projected image,, be in image in described two adjustment under the state of same position relation, repeatedly take, calculate described evaluation of estimate preferably in described the 2nd step.

Like this, calculate evaluation of estimate, can obtain to have reduced the high-precision evaluation of estimate of the noise effect of camera head by the photographed images data of using repeatedly shooting to obtain.For example, obtain use by the mean value of the evaluation of estimate of the photographed images data computation that obtains of shooting repeatedly, this mean value as the evaluation of estimate that should obtain.

(10) in aforementioned (1)～(9) in the location regulation method of each described projected image, in preferred described the 3rd step, the position of effective image display area of the image forming area of the photoelectricity modulating device of any projector in two projector is moved with pixel unit, carry out the position adjustment of described two projected images.

Like this, by the function of utilizing projector to have originally, projected image is moved with pixel unit.

(11) position regulator of projected image of the present invention, use two adjustment images, adjust two projector from multi-projection display with the position of two projected images of mode projection on the projecting plane with overlapping region with a plurality of projector, it is characterized in that, the position regulator of described projected image has: adjust and use image-data output device, they can be to two adjustment view data of described two projector output, these two adjustment are corresponding with image with described two adjustment with view data, described two adjustment have following figure with image, promptly, when described two adjustment are projected with suitable position relation with image, the regulation feature appears in described overlapping region; Camera head, it can take described two the adjustment images of projection on described projecting plane; The evaluation of estimate calculation element, it calculates the evaluation of estimate that is associated with described feature according to utilizing described camera head to taking the photographed images data that obtain from the described projecting plane of described two adjustment of described two projector projections during with image; And position adjustment control device, it carries out the position adjustment of described two projected images according to described evaluation of estimate.

In the position regulator of this projected image, can obtain the identical effect of location regulation method with (1) described projected image.In addition, in the position regulator of this projected image, preferably has the identical feature of location regulation method with the projected image of aforementioned (2)～(10).

(12) program is adjusted in the position of projected image of the present invention, use two adjustment images, adjust two projector from multi-projection display with the position of two projected images of mode projection on the projecting plane with overlapping region with a plurality of projector, it is characterized in that, comprise the process that following steps are performed:

The 1st step, provide two adjustment view data to described two projector, these two adjustment are corresponding with image with described two adjustment with view data, described two adjustment have following figure with image, promptly, when described two adjustment are projected with suitable position relation with image, in described overlapping region appearance regulation feature; The 2nd step according to taking the photographed images data that obtain from the described projecting plane of described two adjustment of described two projector projections during with image, is calculated the evaluation of estimate that is associated with described feature; And the 3rd step, carry out the position adjustment of described two projected images according to described evaluation of estimate.

In the position of this projected image adjustment program, can obtain the identical effect of location regulation method with (1) described projected image.In addition, in the position of this projected image adjustment program, preferably has the identical feature of location regulation method with the projected image of aforementioned (2)～(10).

(13) multi-projection display of the present invention, have a plurality of projector, can with from the projected image of described a plurality of projector with mode projection with overlapping region on the projecting plane, it is characterized in that, have: adjust and use image-data output device, they can be to two adjustment view data of described two projector output, these two adjustment are corresponding with image with two adjustment with view data, described two adjustment have following figure with image, promptly, when described two adjustment of two projector projections in described a plurality of projector are projected with suitable position relation with image, the regulation feature appears in described overlapping region; The evaluation of estimate calculation element, it is according to taking the photographed images data that obtain from the described projecting plane of described two adjustment of described two projector projections during with image, the evaluation of estimate that calculating is associated with described feature; And position adjustment control device, it carries out the position adjustment of described two projected images according to described evaluation of estimate.

Multi-projection display with a plurality of projector has the structure of carrying out this position adjustment usefulness, can carry out from the position adjustment of the projected image of each projector projection fast and accurately with little operand thus.In addition, in this multi-projection display, preferably has the identical feature of location regulation method with the projected image of aforementioned (2)～(10).

(14) in aforementioned (13) described multi-projection display, a plurality of projected images that preferred described multi-projection display constitutes from described a plurality of projector can tile projection (tiling) in the mode with overlapping region on the projecting plane.

Like this, even in the multi-projection display that makes the projection of tiling, also can carry out from the position adjustment of the projected image of each projector projection fast and accurately with little operand with having the overlapping region between the projected image adjacent from the projected image of a plurality of projector projections.

(15) in aforementioned (13) described multi-projection display, a plurality of projected images that preferred described multi-projection display constitutes from described a plurality of projector can pile up (stacking) projection on the projecting plane in the mode with overlapping region.

Like this, pile up the multi-projection display of projection even carry out in the same projection zone, piling up projection from the what is called of the projected image of a plurality of projector projections, also can carry out from the position adjustment of the projected image of each projector projection fast and accurately with little operand.

Description of drawings

Fig. 1 is the figure of structure of the multi-projection display of the expression location regulation method that is suitable for the projected image that embodiment 1 relates to.

Fig. 2 is the figure of structure that specifically represents the position regulator 1 of projected image.

Fig. 3 is that expression is from two adjustment of projector PJ1, PJ2 difference projection on screen SC R arranged side by side in the horizontal direction synoptic diagram with the example of image C G1, CG2.

Fig. 4 is that expression makes adjustment shown in Figure 3 be projected in the synoptic diagram of the state on the screen SC R with image C G1, CG2 with having a part of overlapping region.

Fig. 5 is that expression will be adjusted with figure in each position of image C G2, amplify demonstration with the overlapping region of image C G1, CG2 from the adjustment in the photographed images data of camera head 11.

Fig. 6 is illustrated in from handling the figure that the start bit set is judged as the pixel count of white to each position of moving the position " 20 " after 20 pixels.

Fig. 7 is the process flow diagram that summary is represented the position control step of the projected image in the location regulation method of the projected image that embodiment 1 relates to.

Fig. 8 is illustrated in from handling the figure that the start bit set is judged as the pixel count of white to each position of moving the position " 40 " after 40 pixels.

Fig. 9 is that expression is from two adjustment of projector PJ1, PJ2 difference projection on screen SC R arranged side by side in the horizontal direction synoptic diagram with the example of image C G3, CG4.

Figure 10 is that expression makes adjustment shown in Figure 9 be projected in the synoptic diagram of the state on the screen SC R with image C G3, CG4 with having a part of overlapping region.

Figure 11 is illustrated in adjustment shown in Figure 10 with among image C G3, the CG4, is judged as the figure of the pixel count of white each position of the position " 20 " after from processing start bit set to mobile 20 pixels.

Figure 12 is that expression is from distinguishing the synoptic diagram of the adjustment of projection on screen SC R with the example of image C G3, CG4 at vertical direction two projector PJ1, PJ2 arranged side by side.

Figure 13 is that expression makes adjustment shown in Figure 12 be projected in the synoptic diagram of the state on the screen SC R with image C G3, CG4 with having a part of overlapping region.

Figure 14 represents to make the synoptic diagram of adjusting the state on the screen SC R that is projected in image C G1, CG2 from vertical direction two projector PJ1, PJ2 arranged side by side with having a part of overlapping region.

Figure 15 is that expression has 4 * 4 figure that add up to the multi-projection display of 16 projector.

Figure 16 be expression adjust variation with the figure of image (one of) figure.

Figure 17 is the figure that variation with the figure of image (two) is adjusted in expression.

Figure 18 is the figure that variation with the figure of image (three) is adjusted in expression.

Symbol description

The position regulator of 1 projected image; 11 camera heads; 12 adjustment image-data output devices; 13 evaluation of estimate calculation elements; Control device is adjusted in 14 positions; CG1, CG2, CG3, CG4 adjust and use image; PJ1, PJ2 projector; The SCR screen.

Embodiment

Below, embodiments of the present invention are described.

(embodiment 1)

Fig. 1 is the figure of structure of the multi-projection display of the expression location regulation method that is suitable for the projected image that embodiment 1 relates to.Understand easily in order to make explanation, suppose multi-projection display shown in Figure 1 have arranged side by side in the horizontal direction about two projector PJ1, PJ2, each projector PJ1, PJ2 are configured to the projection of can tiling on the screen SC R as the projecting plane, make the part of projected image separately have the overlapping region.In addition, Fig. 1 is the figure that watches screen SCR and projector PJ1, PJ2 from the top.

Multi-projection display shown in Figure 1 has: two projector PJ1, PJ2; With the position regulator 1 of projected image, it has and carries out the function adjusted from the position of the projected image of two projector PJ1, PJ2.

In addition, projector PJ1, PJ2 can make the display position of the projected image on the screen SC R move along horizontal/with 1 pixel unit in screen SC R inside by the operation from the outside.And, in the time can not the display position of image being moved by peripheral operation, for example can be by in image-data output device (PC etc.), to each projector PJ1, PJ2 provide make the image self that show with 1 pixel unit along the function that horizontal/moves, tackle.

The position regulator 1 of projected image has: camera head 11, and it can take the adjustment of state tiling ground projection on screen SC R image C G1, the CG2 that has the overlapping region with a part; Adjust with image-data output device 12, it can be to projector PJ1, PJ2 output adjustment view data CGD1, the CGD2 corresponding with two adjustment image C G1, CG2; Evaluation of estimate calculation element 13, it calculates adjusting the evaluation of estimate with image according to the photographed images data from camera head 11; And position adjustment control device 14, it obtains the best projection position from the projected image of projector PJ1, PJ2 according to the evaluation result of this evaluation of estimate calculation element 13, carries out the position adjustment of projected image according to the position that is obtained.

In addition, in the location regulation method of the projected image that embodiment 1 relates to, make two adjustment fixing with image (being made as the adjustment image C G1 of projector PJ1 projection) with an adjustment among image C G1, the CG2, make another adjust with image (being made as the adjustment image C G2 of projector PJ2 projection) on screen SC R vertically (above-below direction) mobile, detect the projected position of the best thus.

Fig. 2 is the figure of structure that specifically represents the position regulator 1 of projected image.Adjust and have with image-data output device 12: adjustment view data generating unit 121, it generates each adjustment view data CGD1, the CGD2 that gives projector PJ1, PJ2; And adjust with view data efferent 122, the adjustment that it generated is exported to corresponding projector PJ1, PJ2 with view data CGD1, CGD2.

Camera head 11 is taken and adjustment view data CGD1, CGD2 from projector PJ1, PJ2 corresponding adjustment image C G1, the CG2 of projection on screen SC R, exports this photographed images data.In addition, this camera head 11 can use the resolution low camera head of resolution than the projected image of projection on screen SC R.

Evaluation of estimate calculation element 13 has: photographed images data input part 131, the photographed images data of its input by being obtained with image C G1, CG2 by the adjustment on the camera head 11 photographed screen SCR; Photographed images data store 132, the photographed images data that its storage is imported; Evaluation of estimate calculating part 133, it calculates based on the evaluation of estimate of adjusting with the position relation of image C G1, CG2 (details will be narrated in the back); And position/evaluation of estimate storage part 134, it is based on adjusting with the storage that is mapped of the position of moving of image C G2 and the evaluation of estimate of being calculated.

The position is adjusted control device 14 and is had: projected image position control section 141, and its projected image position that can control projector PJ1, PJ2 makes it move with 1 pixel unit; Position/evaluation of estimate acquisition unit 143, its input be stored in the position/evaluation of estimate storage part 134 of evaluation of estimate calculation element 13 the position and to the evaluation of estimate of this position, obtain maximum evaluation of estimate and position (being called the maximum position of estimating) thereof in the evaluation of estimate, estimate in the location storage portion 142 in maximum estimating location storage corresponding to the maximum of the maximum evaluation of estimate of being obtained; And control part 144, it estimates the position according to maximum evaluation of estimate of being obtained by position/evaluation of estimate acquisition unit 143 and the maximum of this moment, provides mobile control information to described projected image position control section 141.

Fig. 3 is that expression is from two adjustment of projector PJ1, PJ2 difference projection on screen SC R arranged side by side in the horizontal direction synoptic diagram with the example of image C G1, CG2.Fig. 3 (a) expression is adjusted and is used image C G1, and Fig. 3 (b) expression is adjusted and used image C G2.Adjustment shown in Figure 3 is the adjustment image that is used to carry out from the position adjustment of the vertical direction of each projected image on screen SC R of projector PJ1, PJ2 with image C G1, CG2.

In addition, as previously described, adjust with image C G1, CG2 and can generate with image as the adjustment that corresponds respectively to two projector PJ1, PJ2, two adjustment that generated are offered corresponding projector PJ1, PJ2 with image, but also can generate an adjustment and use image as adjusting, this adjustment is also offered corresponding projector PJ1, PJ2 respectively with image segmentation with image.The adjustment of using in the location regulation method of the projected image that this relates to for each embodiment of later explanation is also identical with image.

Adjust with image C G1, CG2 and have when adjustment is projected with image C G1, CG2 on screen SC R with suitable position relation the figure of appearance regulation feature in its overlapping region.

Promptly, two adjustment have the 1st figure based on the 1st color with an adjustment among image C G1, the CG2 with image C G1, another is adjusted with image C G2 has the 2nd figure based on the 2nd color, set the pixel value of described two adjustment, make the 1st color and the 2nd color when described the 1st figure and the 2nd graphics overlay, show white as feature with image red composition, green composition and blue composition separately.

For example, supposing that as adjusting the 1st color with image C G1 be the color with stronger relatively red composition and relative more weak green composition, is the color with relative stronger blue composition and relative more weak green composition with the 2nd color of image C G2 as adjustment.Specifically, for the 1st color of adjusting with image C G1, the pixel value (gray-scale value) of R (redness), G (green), B (blueness) composition is set at R=255, G=160, B=0, the 2nd color for adjusting with image C G2 is set at R=0, G=160, B=255 to the pixel value (gray-scale value) of R (redness), G (green), B (blueness) composition.In addition, the preferred background color is a black.And the pixel value that uses in each embodiment of the present invention is represented brightness value.

In addition, is white (R=255, G=255, B=255) in order to make adjustment with the pixel value of the overlapping region of image C G1, CG2, it is desirable to, G (green) composition of adjusting with image C G1, CG2 should be 128, but in fact because the influence of the gamma characteristic of projector PJ1, PJ2 or camera head or lighting condition etc., the light characteristic of photographed images data changes sometimes.So in embodiment 1, be set at G (green)=160.Like this, the value of G (green) can suitably be set at the value of the condition etc. that is suitable for this moment most.

And, in above-mentioned example, the pixel value of R and B is fixed as 255 or 0 respectively, and G is set at optimum value changeably, but also can be fixed as 255 or 0 to the pixel value of G and B respectively, R is set at optimum value changeably, and can be fixed as 255 or 0 to the pixel value of R and G respectively, B is set at optimum value changeably.But camera head is highly sensitive for G (green) generally, so preferably G (green) is set at optimum value changeably.

And, adjust the bargraphs that constitutes for many straight lines with image C G1, CG2 figure (the 1st figure and the 2nd figure) separately by horizontal direction.And, the width of each bar line (thickness) is shown in the enlarged drawing of the frame of broken lines of Fig. 3, corresponding to 1 pixel of the photoelectricity modulating device (being called the liquid crystal modulating device) of projector PJ1, PJ2, and the interval of each line is corresponding to 20 pixels of the liquid crystal modulating device of projector PJ1, PJ2.

Below, the location regulation method of the projected image that embodiment 1 relates to is described.Herein, the resolution of each liquid crystal modulating device of projector PJ1, PJ2 is level 1280 pixels * vertical 720 pixels, and the resolution of camera head is level 1280 pixels * vertical 1024 pixels.

At first, the user carries out the position adjustment of possible range with image C G1, CG2 to two adjustment by manual operation.In addition, by user's manually operated position adjustment and the position of setting calls initial position.

And the location regulation method of the projected image that relates to by application implementation mode 1 carries out the final inching from this initial position, determines the best projection position.Below, the position set-up procedure of projected image of the location regulation method of the projected image that embodiments of the present invention 1 relate to is described.

At first,, go out the projector PJ1 output adjustment view data CGD1 of the left side projected image of screen SC R to projection by adjustment image-data output device 12, and to the projector PJ2 of projection right side projected image output adjustment view data CGD2.These are adjusted with among view data CGD1, the CGD2, adjust the pixel value that has R=255, G=160, B=0 with view data CGD1, adjust the pixel value that has R=0, G=160, B=255 with view data CGD2.

Fig. 4 is that expression makes adjustment shown in Figure 3 be projected in the synoptic diagram of the state on the screen SC R with image C G1, CG2 with having a part of overlapping region.As shown in Figure 4, the adjustment of projector PJ1 has the ground projection of a part of overlapping region with the adjustment of image C G1 and projector PJ2 on screen SC R with image C G2, wherein adjust the pixel value that has R=255, G=160, B=0 with image C G1, adjust the pixel value that has R=0, G=160, B=255 with view data CGD2.In addition, the adjustment among Fig. 4 is in the state that carries out before the position is adjusted with image C G1 and adjustment with image C G2.

Adjusting with image C G1, CG2 projection after on the screen SC R, make and adjust with either party among image C G1, the CG2 vertically with 1 pixel unit shift position.As previously described, in embodiment 1, the fixing adjustment used image C G1, makes to adjust and moves with 1 pixel unit with the position of image C G2.In addition, the function that move with pixel unit the position of effective image display area of the image forming area by using the liquid crystal modulating device can make projector PJ2 can easily be adjusted the moving with 1 pixel unit with image C G2.

The adjustment that makes projector PJ2 projection is in from the initial position of setting by described manually operated position adjustment with image C G2 and vertically (is made as direction) and moves position (establishing it for handling the starting position) after 10 pixels.Then, make adjustment move the operation of 20 pixels successively with 1 pixel unit from this processing starting position downward direction with image C G2.

In addition, as mentioned above, the adjustment that makes projector PJ2 projection is moved in the vertical direction position after 10 pixels as handling the starting position with image C G2 from the initial position of setting by manual operation, and carry out moving of 20 pixels from this processing starting position, be because the initial position of setting by manual operation, though be that manual operation also has accuracy to a certain degree, in the scope of about 10 pixels of above-below direction that with this initial position is benchmark, there is the probability height of best projection position.By carrying out this operation, can find the best projection position more efficiently.

Fig. 5 is that expression will be adjusted with figure in each position of image C G2, amplify demonstration with the overlapping region of image C G1, CG2 from the adjustment in the photographed images data of camera head 11.Each image shown in Figure 5, expression carried out making adjust with image C G2 after the operation of handling the starting position downward direction and moving 20 pixels with 1 pixel unit successively, the adjustment image C G1 of each position, the state of CG2.In Fig. 5, additional numerical value " 1 "～" 20 " in the lower left of each image are that expression makes the sequence number of adjusting each position when moving 20 pixels with image C G2 from handling the starting position, and a position set is the processing starting position.

On the other hand, utilize camera head 11, follow and adjust with the moving of 1 pixel unit of image C G2, the adjustment on the photographed screen SCR is exported its photographed images data with image C G1, CG2.These photographed images data are imported into photographed images data input part 131, are stored in the photographed images data store 132.And evaluation of estimate calculating part 133 uses the photographed images data that are stored in the photographed images data store 132, at each position calculation evaluation of estimate of adjusting with 1 pixel unit of image C G2.The calculating of this evaluation of estimate is following carrying out.

As shown in Figure 5, make to adjust and move with 1 pixel unit with image C G2, when adjusting the position that becomes regulation with image C G1, CG2 and concern, in the overlapping region of adjustment, show non-existent feature among original adjustment usefulness image C G1, the CG2 with image C G1, CG2.Herein, come across the feature of adjusting with the overlapping region of image C G1, CG2, be meant the variation of the pixel value of adjusting the photographed images data that each line overlap with image C G1, CG2 causes, during this situation, if make both suitably overlapping, then in this overlapping region white appears.

In addition, Fig. 5 is monochromatic accompanying drawing, thus be difficult to from Fig. 5, to read the appearance of white, but the appearance of in fact reading white on the coloured image as the original shape of Fig. 5 is easily.During this situation, adjusting with image C G1 and adjusting in the overlapping region of using image C G2, utilize pink colour to represent to have and reach the white of the pixel value of defined threshold (will narrate in the back) about threshold value, thus the appearance that is more prone on the coloured image of display, read white.

Though from Fig. 5, be not easy to read, but " 6 " begin to appear as the zone of white from the position, " 8 " reach maximum for the zone of white in the position, then along with the position become " 9 ", " 10 " ... for the zone of white sharply reduces, read among Fig. 6 that this situation can illustrate from behind.

In Fig. 5, can be judged to be in the position " 8 " and adjust and be in suitable position with image C G1, CG2 and concern.Can carry out this adjustment is in suitable position relation with image C G1, CG2 judgement according to the pixel count that becomes white from the photographed images data.

At this moment, can whether judge whether become white according to the pixel value of each pixel more than or equal to setting.Promptly, perfect condition is to be made as white when pixel value is R, G, B=(255,255,255), but in each embodiment of the present invention, pixel value as threshold value for example is set at R, G, B=(240,240,240), pixel value is judged to be white more than or equal to R, G, B=(240,240,240).

, threshold value is made as R, G, B=(240,240,240) rather than R, G, B=(255,255,255) herein, this is because consider the change of device characteristics such as gamma characteristic or lighting condition, and sets certain surplus.

Fig. 6 is illustrated in from handling the figure that the start bit set is judged as the pixel count of white to each position of moving the position " 20 " after 20 pixels.As shown in Figure 6, in the position " 8 " be judged as white pixel count maximum.In addition, be to calculate with respect to the pixel count of each position shown in Figure 6 by the evaluation of estimate calculating part among Fig. 2 133, the pixel count that is calculated is mapped with each position, is stored in the position/evaluation of estimate storage part 134 of the evaluation of estimate calculation element 13 among Fig. 2.

And, position/evaluation of estimate the acquisition unit 143 of control device 14 is adjusted in position among Fig. 2, in the content from the position/evaluation of estimate storage part 134 that is stored in evaluation of estimate calculation element 13, obtain position and estimate the position, the maximum of being obtained is estimated location storage estimate in the location storage portion 142 in maximum as maximum with maximum pixel number.During this situation, position " 8 " are that the maximum with maximum pixel number is estimated the position, so position " 8 " are estimated in the location storage portion 142 in maximum as the maximum location storage of estimating.

Promptly, Fig. 6 represents adjusting when being made as position " 8 " with image C G2, adjust with each bar line and the adjustment of image C G1 overlapping in vertical direction with the projected position relation of the best with each bar line of image C G2, if expression utilizes projector PJ1, PJ2 to carry out projection under this position relation, then each projected image is projected in the best projection position of vertical direction.

Therefore, make this maximum estimate the position adjustment of projected position that position is the projected image of projector PJ2.Thus, each projected image of projector PJ1, PJ2 is in vertical direction and has carried out the best projection position that suitable position is adjusted, and may be displayed on the overlapping region and can not produce discontinuous joint or fuzzy high quality graphic.

And, the resolution of the camera head 11 that uses in the location regulation method of the projected image that embodiment 1 relates to is level 1280 pixels * vertical 1024 pixels, even the camera head that the resolution about 1,000,000 pixels is lower also can be adjusted the position of resolution than its high projected image (resolution of 1 projector being made as level 1280 * vertical 720 herein) with 1 pixel unit.

Fig. 7 is the process flow diagram that summary is represented the position set-up procedure of the projected image in the location regulation method of the projected image that embodiment 1 relates to.Because the processing to each step among Fig. 7 is illustrated, so the flow process of simple declaration bulk treatment herein.

At first, utilize projector PJ1, PJ2 will adjust and go up (step S1) in screen SC R with image C G1, CG2 projection.And, the user carries out position adjustment possible range in to the adjustment of projector PJ1, PJ2 projection with image C G1, CG2 by manual operation, be processing start bit set (step S2) adjusting with the set positions of image (be made as to adjust and use image C G2) then with an adjustment among image C G1, the CG2, under this state, utilize adjustment image C G1, CG2 (step S3) on the camera head 11 photographed screen SCR.

Then, according to the photographed images data computation evaluation of estimate (pixel count) (step S4) that obtains by shooting, the position of the evaluation of estimate calculated and this moment is mapped stores (step S5).

And, the position is increased progressively (step S6), judge whether the position after increasing progressively has surpassed maximum shift position (being " 20 " in embodiment 1) (step S7), if do not surpass maximum shift position, then return step S3, carry out step S3 and step S3 processing afterwards.On the other hand, when surpassing maximum shift position, from the recorded content that among step S5, writes down, obtain position and evaluation of estimate (step S8), the position is estimated as maximum in the position that wherein has maximum evaluation of estimate (pixel count), be stored in maximum the evaluation in the location storage portion 142 (step S9).

And control part 144 carries out the position adjustment of projector PJ2, makes this maximum estimate the projected position that the position becomes the projected image of projector PJ2.Thus, each projected image of projector PJ1, PJ2 is in best position relation in vertical direction.

In addition, in the location regulation method of the projected image that the embodiment 1 of above explanation relates to, make to adjust and fix with image C G1 with the adjustment among image C G1, the CG2, make to adjust and move with image C G2, determine to adjust position, certainly, otherwise also can with image C G2, make to adjust and fix, make to adjust and move with image C G1 with image C G2.

And, in above-mentioned example, make a side's who carries out the position adjustment adjustment move 20 pixels from handling the starting position with image (in embodiment 1, using image C G2) for adjusting, set the best projection position, but also can in the variation of embodiment shown below 1, narrate, make to adjust and move any pixel, set the best projection position from handling the starting position with image C G2.

(variation of embodiment 1)

Fig. 8 is illustrated in from handling the figure that the start bit set is judged as the pixel count of white to each position of moving the position " 40 " after 40 pixels.During this situation, the user carries out position adjustment possible range in to two adjustment with image C G1, CG2 by manual operation, set initial position, being moved upward position after 20 pixels from this initial position, carry out from the operation of this searching best projection position, processings starting position as handling the starting position.

As shown in Figure 8, make to adjust and move 40 pixels from handling the start bit set with image C G2, thereby make and twice adjustment takes place at least, occur twice so be judged as the peak value of the pixel count of white with image C G1 and the adjustment repetition of each lines of image C G2.In the example of this Fig. 8, in the position " 11 " and apart from this position " 11 " 20 locations of pixels " 31 ", the peak value of the pixel count of white appears being judged as.

Like this, when the peak value of a plurality of pixel counts having occurred, basically, the position is estimated as maximum in the position that wherein has maximum evaluation of estimate (pixel count).In addition, when the evaluation of estimate of a plurality of peak values equates, for example utilize gimmick shown below to detect the best projection position.With Fig. 8 is an example explanation example wherein.

In Fig. 8, if initial position is made as position " 10 ", then in Fig. 8, the 1st peak value appears at position " 11 ", and the 2nd peak value appears at position " 31 ", so the position " 11 " near initial position more is set at the optimum position.

Like this, when the evaluation of estimate of a plurality of peak values equates, can be adopted as the optimum position to the peak value that comes across apart from the nearer position of initial position.This is because as previously described, the initial position of setting by manual operation, though be that manual operation also has accuracy to a certain degree, so think that be appropriate as the best projection position to position near this initial position.

(embodiment 2)

In the location regulation method of the projected image that embodiment 1 relates to, the situation about adjusting from the position of the vertical direction (above-below direction) of each projected image of two projector PJ1, PJ2 arranged side by side in the horizontal direction of carrying out has been described, but in the location regulation method of the projected image that embodiment 2 relates to, illustrate from the position of the horizontal direction (left and right directions) of each projected image of two projector PJ1, PJ2 arranged side by side in the horizontal direction and adjust.

Fig. 9 is that expression is from two adjustment of projector PJ1, PJ2 difference projection on screen SC R arranged side by side in the horizontal direction synoptic diagram with the example of image C G3, CG4.As the adjustment image of this moment, use the image C G3 of the adjustment shown in Fig. 9 (a) and (b), CG4.

Adjusting adjustment view data CGD3, the CGD4 that uses image C G3, CG4 corresponding to this, is to generate with view data generating unit 121 by adjustment shown in Figure 2.And, by adjusting adjustment view data CGD3, the CGD4 that generates with view data generating unit 121, offer each projector PJ1, PJ2 by adjusting with view data efferent 122, thus on screen SC R projection adjustment usefulness image C G3, CG4 shown in Figure 9.

These adjust with image C G3, CG4 also identical with image C G1, CG2 with aforesaid adjustment, have following figure,, when each adjustment is projected with image C G3, CG4 on screen SC R with suitable position relation, the regulation feature occurs in this overlapping region that is.Adjust with image C G3, CG4 and have the figure that the lines by vertical direction constitute.In addition, the interval between thickness of lines (width) and the lines etc. with adjust with image C G1, CG2 identical (with reference to the frame of broken lines of Fig. 9).

Figure 10 is that expression makes adjustment shown in Figure 9 be projected in the synoptic diagram of the state on the screen SC R with image C G3, CG4 with having a part of overlapping region.As shown in figure 10, the adjustment of projector PJ1 has the ground projection of a part of overlapping region with the adjustment of image C G3 and projector PJ2 on screen SC R with image C G4, wherein adjust the pixel value that has R=255, G=160, B=0 with image C G3, adjust the pixel value that has R=0, G=160, B=255 with image C G4.In addition, the adjustment among Figure 10 is the state that carries out before the position is adjusted with image C G4 with image C G3 and adjustment.

In the location regulation method of the projected image that embodiment 2 relates to, also make two adjustment fixing with image (being made as the adjustment image C G3 of projector PJ1 projection) with an adjustment among image C G3, the CG4, another is adjusted with image (being made as the adjustment image C G4 of projector PJ2 projection) along continuous straight runs on screen SC R (left and right directions) move, detect the best projection position.In addition, the function that move with pixel unit the position of effective image display area of the image forming area by using the liquid crystal modulating device can make projector PJ2 can easily be adjusted the moving with 1 pixel unit with image C G4.

The location regulation method of the projected image that embodiment 2 relates to, can use the position regulator 1 (with reference to Fig. 2) of projected image, carry out according to the step that the location regulation method of the projected image that relates to embodiment 1 is identical, so carry out simple declaration herein.

At first, from by manual operation the adjustment of projector PJ1, PJ2 projection having been carried out the adjusted state in the position in the possible range with image C G3, CG4 by the user, position after the adjustment that makes projector PJ2 projection is moved 10 pixels with image C G4 along continuous straight runs (be made as left to) is as handling the starting position, make projector PJ4 from this processings starting position along right with the 1 pixel unit operation of mobile 20 pixels successively.

Then, utilize camera head 11, the adjustment on the photographed screen SCR is exported its photographed images data with image C G3, CG4.These photographed images data are imported into photographed images data input part 131 shown in Figure 2, are stored in the photographed images data store 132.Then, evaluation of estimate calculating part 133 uses the photographed images data that are stored in the photographed images data store 132, at each position calculation evaluation of estimate of adjusting with 1 pixel unit of image C G4.The calculating of this evaluation of estimate can be carried out in the same manner with embodiment 1.

Figure 11 is illustrated in adjustment shown in Figure 10 with among image C G3, the CG4, is judged as the figure of the pixel count of white each position of the position " 20 " after from processing start bit set to mobile 20 pixels.In addition, in the example of this Figure 11, in the position " 10 " be judged as white pixel count maximum.That is, in the example of this Figure 11, the user carries out position adjusted state possible range in to the adjustment of projector PJ1, PJ2 projection with image C G3, CG4 by manual operation, and the result is judged as best projected position.

In addition, the position set-up procedure of the projected image in the location regulation method of the projected image that embodiment 2 relates to, in the process flow diagram shown in Figure 7 that uses in the explanation of the location regulation method by the projected image that relates at embodiment 1, be replaced into adjustment with image C G3, CG4 adjusting, can use process flow diagram shown in Figure 7 with image C G1, CG2.

And, in the location regulation method of the projected image that embodiment 2 relates to, make to adjust and fix with image C G3 with the adjustment among image C G3, the CG4, make to adjust and move with image C G4, thereby determine to adjust position, certainly, otherwise also can with image C G4, make to adjust and fix, make to adjust and move with image C G3 with image C G4.

And, in the location regulation method of the projected image that embodiment 2 relates to, illustrated in fig. 8 identical with at embodiment 1 can make one of them adjust with image (be made as to adjust and use image C G4) from the mobile any pixel in processing starting position, thereby set the best projection position.

(embodiment 3)

In the location regulation method of the projected image that embodiment 1 and embodiment 2 relate to, the situation about adjusting from the position of the vertical direction (above-below direction) of each projected image of two projector PJ1, PJ2 arranged side by side in the horizontal direction and horizontal direction (left and right directions) of carrying out has been described, but also can utilize the adjustment in the explanation of embodiment 2, used with image C G3, CG4, come the position adjustment of horizontal direction of each projected image of comfortable vertical direction two projector PJ1, PJ2 arranged side by side.

Below, the position adjustment that utilizes the horizontal direction of adjusting each projected image that carries out with image C G3, CG4, come comfortable vertical direction two projector PJ1, PJ2 arranged side by side is described.

The multi-projection display of the location regulation method of the projected image that application implementation mode 3 relates to, two projector PJ1, PJ2 shown in Fig. 1 vertically are set up in parallel, have only this point different, so the diagram of the structure of the multi-projection display of the location regulation method of the projected image that omission application implementation mode 3 relates to Fig. 1.

In addition, the upside projected image of the vertical direction on the projector PJ1 projection screen SCR, the downside projected image of the vertical direction on the projector PJ2 projection screen SCR.And, tiled the ground projection on screen from each projected image of projector PJ1, PJ2, make a part have the overlapping region.

Figure 12 is that expression is from distinguishing the synoptic diagram of the adjustment of projection on screen SC R with the example of image C G3, CG4 at vertical direction two projector PJ1, PJ2 arranged side by side.Figure 12 (a) expression is adjusted and is used image C G3, and Figure 12 (b) expression is adjusted and used image C G4.

Figure 13 is that expression makes adjustment shown in Figure 12 be projected in the synoptic diagram of the state on the screen SC R with image C G3, CG4 with having a part of overlapping region.As shown in figure 13, the adjustment of projector PJ1 is projected on screen SC R with image C G4 with the adjustment of image C G3 and projector PJ2 with having a part of overlapping region, wherein, adjust the pixel value that has R=255, G=160, B=0 with image C G3, adjust the pixel value that has R=0, G=160, B=255 with view data CG4.In addition, the adjustment among Figure 13 is the state that carries out before the position is adjusted with image C G4 with image C G3 and adjustment.

In the location regulation method of the projected image that embodiment 3 relates to, make two adjustment fixing with image (being made as the adjustment image C G3 of projector PJ1 projection) with an adjustment among image C G3, the CG4, another is adjusted with image (being made as the adjustment image C G4 of projector PJ2 projection) along continuous straight runs on screen SC R (left and right directions) move, detect the best projection position thus.

The location regulation method of the projected image that embodiment 3 relates to, can use the position regulator 1 (with reference to Fig. 2) of projected image, and carry out according to the roughly the same step of the location regulation method of the projected image that relates to embodiment 1, so carry out simple declaration herein.

At first, by manual operation the adjustment of projector PJ1, PJ2 projection has been carried out the adjusted state in the position in the possible range with image C G3, CG4 from the user, position after the adjustment that makes projector PJ2 projection is moved 10 pixels with image C G4 along continuous straight runs (be made as left to), as handling the starting position, make and adjust the operation of moving 20 pixels with image C G4 from this processing starting position along right with 1 pixel unit successively.

Utilize adjustment image C G3, CG4 on the camera head 11 photographed screen SCR, export its photographed images data.These photographed images data are imported into photographed images data input part 131 shown in Figure 2, are stored in the photographed images data store 132.And evaluation of estimate calculating part 133 uses the photographed images data that are stored in the photographed images data store 132, at each position calculation evaluation of estimate of adjusting with 1 pixel unit of image C G4.The calculating of this evaluation of estimate can identical method be carried out according to the location regulation method of the projected image that relates to embodiment 1.

That is, obtain the pixel count that is judged as white in each position when adjustment is moved with 1 pixel unit with image C G4, obtain the maximum position of pixel count.And, be the maximum set positions of pixel count the best projection position.Thus, each projected image of projector PJ1, PJ2 becomes and has carried out the state that suitable position is adjusted in the horizontal direction, may be displayed on the overlapping region and can not produce discontinuous joint or fuzzy high quality graphic.

In addition, the position set-up procedure of the projected image in the location regulation method of the projected image that embodiment 3 relates to, in the process flow diagram shown in Figure 7 that uses in the explanation of the location regulation method by the projected image that relates at embodiment 1, be replaced into adjustment with image C G3, CG4 adjusting, can use process flow diagram shown in Figure 7 with image C G1, CG2.

And, in the location regulation method of the projected image that embodiment 3 relates to, make to adjust and fix with image C G3 with the adjustment among image C G3, the CG4, make to adjust and move with image C G4, thereby determine to adjust position, certainly, otherwise also can with image C G4, make to adjust and fix, make to adjust and move with image C G3 with image C G4.

And, in the location regulation method of the projected image that embodiment 3 relates to, illustrated in fig. 8 identical with at embodiment 1 can make one of them adjust with image (be made as to adjust and use image C G4) from handling the mobile any pixel in starting position, thus setting best projection position.

(embodiment 4)

In the location regulation method of the projected image that embodiment 3 relates to, the situation that the position of the horizontal direction (left and right directions) of each projected image that comes comfortable vertical direction two projector PJ1, PJ2 arranged side by side is adjusted has been described, but also can utilize the adjustment in the explanation of embodiment 1, used with image C G1, CG2, come the position adjustment of vertical direction (above-below direction) of each projected image of comfortable vertical direction two projector PJ1, PJ2 arranged side by side.

Figure 14 represents to make the synoptic diagram of adjusting the state on the screen SC R that is projected in image C G1, CG2 from vertical direction two projector PJ1, PJ2 arranged side by side with having a part of overlapping region.In addition, the adjustment among Figure 14 is the state that carries out before the position is adjusted with image C G2 with image C G1 and adjustment.

In addition, in the location regulation method of the projected image that embodiment 4 relates to, make two adjustment fixing with image (being made as the adjustment image C G1 of projector PJ1 projection) with an adjustment among image C G1, the CG2, make another adjust with image (being made as the adjustment image C G2 of projector PJ2 projection) on screen SC R vertically (above-below direction) mobile, detect the best projection position thus.

And, by manual operation the adjustment of projector PJ1, PJ2 projection has been carried out the adjusted state in the position in the possible range with image C G1, CG2 from the user, the adjustment that makes projector PJ2 projection vertically (is made as direction) and moves position after 10 pixels with image C G2, as handling the starting position, make adjust with image C G2 from this processings starting position along under direction with the 1 pixel unit operation of mobile 20 pixels successively.In addition, the computing method of evaluation of estimate etc. are used to set the processing of best projection position, can carry out according to the same procedure of explanation before this, so omit its explanation.

In addition, the position set-up procedure of the projected image in the location regulation method of the projected image that embodiment 4 relates to, the process flow diagram shown in Figure 7 that uses in the explanation of the location regulation method of the projected image that can application implementation mode 1 relates to.

And, in the location regulation method of the projected image that embodiment 4 relates to, make to adjust and fix with image C G1 with the adjustment among image C G1, the CG2, make to adjust and move with image C G2, thereby determine to adjust position, certainly, otherwise also can with image C G2, make to adjust and fix, make to adjust and move with image C G1 with image C G2.

And, in the location regulation method of the projected image that embodiment 4 relates to, illustrated in fig. 8 identical with at embodiment 1 can make an adjustment move any pixel with image (be made as to adjust and use image C G2) from handling the starting position, thus setting best projection position.

The above, as implementing to illustrate in mode 1～embodiment 4, by use adjusting with image C G1, CG2 and adjustment with image C G3, CG4, can be fast and accurately to from carrying out the position adjustment of horizontal direction and vertical direction with the projected image of vertical direction two projector PJ1, PJ2 arranged side by side in the horizontal direction.

Promptly, to projected image from two projector PJ1, PJ2, adjust with image C G1, CG2 by using, can fast and carry out the position adjustment of vertical direction accurately, and adjust with image C G3, CG4 by using, can fast and carry out the position adjustment of horizontal direction accurately.

And, as required, the location regulation method of the projected image that relates to by appropriate combination embodiment 1～embodiment 4, can be fast and accurately to used horizontal direction m platform, vertical direction n platform altogether each projected image of each projector in the multi-projection display of m platform * n platform projector carry out the position adjustment.

For example, Figure 15 be have m=4, n=4 promptly 4 * 4 add up to 16 projector PJ1, PJ2 ... the figure of multi-projection display, in this multi-projection display, adjacent two arranged side by side projector with vertical direction in the horizontal direction as one group, the position adjustment of carrying out illustrating in the location regulation method of the projected image that embodiment 1～embodiment 4 relates to is operated, and can carry out the position adjustment of the projected image of all projector at short notice accurately thus.

In addition, the invention is not restricted to aforementioned each embodiment, can carry out various distortion without departing from the spirit and scope of the present invention.For example, in aforementioned each embodiment, illustrated that the tiling projection is from the situation of the projected image of each projector PJ1, PJ2 on screen SC R, but be not only applicable to the projection of tiling, go for making the situation of piling up projection from the what is called of projected image coincidence on the same projection zone of each projector PJ1, PJ2 yet.

And, in aforementioned each embodiment, the example that occurs white when two adjustment are projected with suitable position relation with image in described overlapping region has been described, but the regulation feature occurs in the overlapping region as long as two adjustment concern when being projected with suitable position with image, so the color that two adjustment present during with the doubling of the image is not limited to white.

And, in aforementioned each embodiment, obtain the surplus of having considered the change that causes because of device characteristics such as gamma characteristic or lighting condition, the threshold value of pixel value is made as " 240,240,240 ", but this threshold value also can be set best value according to environmental baselines such as device characteristics or illuminations.

And, adjust with image C G1, CG2 and adjustment and be made as 20 pixels, but be not limited to 20 pixels with the interval of each line of image C G3, CG4, still be preferably greater than and equal 10 pixels.

And the calculating of evaluation of estimate is preferably repeatedly taken two adjustment are in the state of same position relation with image under, uses these a plurality of camera datas to calculate evaluation of estimate.Like this, use the photographed images data that obtain by shooting repeatedly to calculate evaluation of estimate, can obtain to have reduced the high-precision evaluation of estimate of the noise effect of camera head thus.In addition, during this situation, consider to obtain that the photographed images data that obtain are repeatedly made a video recording in use and the mean value of the evaluation of estimate calculated, this mean value as the evaluation of estimate that should obtain.

And, in aforementioned each embodiment, illustrated two projector in a plurality of projector are carried out the position adjustment, this is minimumly to be one group with two projector and to carry out the situation that the position is adjusted, and also comprises carrying out the situation that the position is adjusted simultaneously from many or the projected image of organizing projector more.

For example, if used the multi-projection display of 4 projector of 2 * 2, then can be two projector on top as one group, when carrying out adjusting from the position of the horizontal direction of the projected image of one group of projector on this top, two projector of bottom as one group, are carried out the position adjustment from the horizontal direction of the projected image of one group of projector of this bottom.Like this, to carrying out the position adjustment, when multi-projection display is made of a plurality of projector as shown in figure 15, can carry out the position adjustment efficiently more, can significantly shorten the position and adjust the time from many or the projected image of organizing projector by simultaneously.

And the projector that uses in aforementioned each embodiment is assumed to RGB trichromatic 3 board-like projector and is illustrated, but the present invention also goes for four primaries or is higher than the how former colour pattern projector of four primaries.

And, in aforementioned each embodiment, for in the horizontal direction or vertical direction configuration (projection) from projected images of many projector, in the horizontal direction or vertical direction physical arrangement projector, but, can certainly not change the physical location of projector, and the projected position change function of employing lens shift etc.

And, in aforementioned each embodiment, as adjusting with image C G1, CG2 and adjustment image C G3, CG4, the figure that has used the straight line by horizontal direction, vertical direction to constitute, but as the figure of adjusting with image C G1, CG2 and adjustment image C G3, CG4, get final product so long as have the figure of lines, can use various figures.

Figure 16 be expression adjust variation with the figure of image (one of) figure, Figure 17 is the figure that variation with the figure of image (two) is adjusted in expression, Figure 18 is the figure that variation with the figure of image (three) is adjusted in expression.

Figure 16 (a) is the example of the adjustment that constitutes of the figure by the straight line with degree of tilt with image, (i) of Figure 16 (b), (ii) be that interval by line has adjustment that periodic figure the constitutes example with image, (i) of Figure 16 (c), (ii) be the adjustment that is made of the curvilinear figure example with image, Figure 16 (d) is the adjustment that is made of the dashed graph example with image.

And, Figure 17 (a) is that the thickness by line has adjustment that periodic figure the constitutes example with image, Figure 17 (b) is an example of being used image by the adjustment that the figure that adopts pattern constitutes, Figure 17 (c) is an example of being used image by the adjustment that the figure that adopts character constitutes, Figure 17 (d) is the adjustment that is made of the figure that the length of adjacent line and pattern the have variation example with image, and Figure 17 (e) is the adjustment that is made of the figure that adopts illustration etc. the example with image.

And, Figure 18 (a) has adjustment that the figure of level the constitutes example with image by line, Figure 18 (b) is the adjustment that is made of at the different figure of the color of above-below direction the same line example with image, and Figure 18 (c) has adjustment that the figure of different colours the constitutes example with image by adjacent line.

Except that the example shown in these Figure 16～Figure 18, for example, also can the figure that makes color upset, make color at the figure that changes on the time shaft, make figure that shape changes on time shaft, the various figures such as figure of these various figures or the combined formation of Figure 12～Figure 14 used image with adjusting.

In addition, program is adjusted in the position that also can generate projected image, and this program has been recorded and narrated the treatment step of the present invention that is used to realize above explanation, and the position adjustment program of this projected image is recorded on the various recording mediums.Therefore, the present invention also comprises the recording medium of the position adjustment program that has write down this projected image.And, also can adjust program from the position of this projected image of network acquisition.

Claims (15)

1. the location regulation method of a projected image, use two adjustment images, adjust two projector from multi-projection display with the position of two projected images of mode projection on the projecting plane with overlapping region with a plurality of projector, it is characterized in that the location regulation method of this projected image comprises:

The 1st step, provide two adjustment view data to described two projector, these two adjustment are corresponding with image with described two adjustment with view data, described two adjustment have following figure with image, promptly, when described two adjustment are projected with suitable position relation with image, the regulation feature occurs in described overlapping region;

The 2nd step according to taking the photographed images data that obtain from the described projecting plane of described two adjustment of described two projector projections during with image, is calculated the evaluation of estimate that is associated with described feature; And

The 3rd step is carried out the position adjustment of described two projected images according to described evaluation of estimate.

2. the location regulation method of projected image according to claim 1, it is characterized in that, in described the 2nd step, described two adjustment are moved with 1 pixel unit along continuous straight runs or vertical direction with image with at least one adjustment in the image, when making described adjustment move 1 pixel unit, just calculate described evaluation of estimate with image.

3. the location regulation method of projected image according to claim 1 and 2 is characterized in that, described figure has the lines of the width corresponding with 1 pixel.

4. according to the location regulation method of each described projected image in the claim 1～3, it is characterized in that described feature is the pixel value in the described photographed images data.

5. the location regulation method of projected image according to claim 4 is characterized in that, described evaluation of estimate is the pixel count of described pixel value more than or equal to threshold value,

In described the 3rd step, be described pixel value maximum position more than or equal to the pixel count of threshold value,, carry out the position adjustment of described two projected images as the best projection position of described two projected images.

6. the location regulation method of projected image according to claim 5 is characterized in that, is described threshold setting the corresponding value of color that just occurs with each graphics overlay in the image with described two adjustment.

7. the location regulation method of projected image according to claim 6, it is characterized in that, described two adjustment have the 1st figure based on the 1st color with an adjustment in the image with image, another is adjusted with image has the 2nd figure based on the 2nd color, set the value of described two adjustment respectively, make described the 1st color and the 2nd color when described the 1st figure and the 2nd graphics overlay, show white with red composition, green composition and blue composition in the image.

8. the location regulation method of projected image according to claim 7, it is characterized in that, described the 1st color is the color with strong relatively red composition and relative weak green composition, described the 2nd color be have strong relatively blue composition and relative a little less than the color of green composition.

9. according to the location regulation method of each described projected image in the claim 1～8, it is characterized in that,, be in image in described two adjustment under the state of same position relation, repeatedly take, calculate described evaluation of estimate in described the 2nd step.

10. according to the location regulation method of each described projected image in the claim 1～9, it is characterized in that, in described the 3rd step, the position of effective image display area of the image forming area of the photoelectricity modulating device of any projector in two projector is moved with pixel unit, carry out the position adjustment of described two projected images.

11. the position regulator of a projected image, use two adjustment images, adjust two projector from multi-projection display with the position of two projected images of mode projection on the projecting plane with overlapping region with a plurality of projector, it is characterized in that the position regulator of described projected image has:

Adjust and use image-data output device, they can be to two adjustment view data of described two projector output, these two adjustment are corresponding with image with described two adjustment with view data, described two adjustment have following figure with image, promptly, when described two adjustment are projected with suitable position relation with image, the regulation feature occurs in described overlapping region;

Camera head, it can take described two the adjustment images of projection on described projecting plane;

The evaluation of estimate calculation element, it calculates the evaluation of estimate that is associated with described feature according to utilizing described camera head to taking the photographed images data that obtain from the described projecting plane of described two adjustment of described two projector projections during with image; And

Control device is adjusted in the position, and it carries out the position adjustment of described two projected images according to described evaluation of estimate.

12. program is adjusted in the position of a projected image, use two adjustment images, adjust two projector from multi-projection display with the position of two projected images of mode projection on the projecting plane with overlapping region with a plurality of projector, it is characterized in that, comprise the process that following steps are performed:

The 1st step, provide two adjustment view data to described two projector, these two adjustment are corresponding with image with described two adjustment with view data, described two adjustment have following figure with image, promptly, when described two adjustment are projected with suitable position relation with image, the regulation feature occurs in described overlapping region;

The 2nd step according to taking the photographed images data that obtain from the described projecting plane of described two adjustment of described two projector projections during with image, is calculated the evaluation of estimate that is associated with described feature; And

The 3rd step is carried out the position adjustment of described two projected images according to described evaluation of estimate.

13. a multi-projection display has a plurality of projector, can with from the projected image of described a plurality of projector with mode projection with overlapping region on the projecting plane, it is characterized in that having:

Adjust and use image-data output device, they can be to two adjustment view data of described two projector output, these two adjustment are corresponding with image with two adjustment with view data, described two adjustment have following figure with image, promptly, when described two adjustment of two projector projections in described a plurality of projector are projected with suitable position relation with image, the regulation feature occurs in described overlapping region;

The evaluation of estimate calculation element, it is according to taking the photographed images data that obtain from the described projecting plane of described two adjustment of described two projector projections during with image, the evaluation of estimate that calculating is associated with described feature; And

Control device is adjusted in the position, and it carries out the position adjustment of described two projected images according to described evaluation of estimate.

14. multi-projection display according to claim 13 is characterized in that, a plurality of projected images that described multi-projection display constitutes from described a plurality of projector can tile the ground projection in the mode with overlapping region on the projecting plane.

15. multi-projection display according to claim 13 is characterized in that, a plurality of projected images that described multi-projection display constitutes from described a plurality of projector can pile up projection on the projecting plane in the mode with overlapping region.

Images