JPH09116932A - Special effect device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To give a special effect in that perspective can be obtained on a stereoscopic picture to a plane picture by giving different correction values to a picture for the left eye and a picture for the right eye so that perspective equivalent to a parallax is given so as to deform the pictures. SOLUTION: A special effect device 11 is provided with a picture signal processor 12L used only for processing a left eye picture signal VINL, a picture signal processor 12R used only for processing a right eye picture signal VINR and an effect quantity input device 13 used for inputting effect quantity of using perspective to 12R. The special effect device 11 executes parallelly processing for inputting the left eye picture signal VINL and the right eye picture signal VINR and giving perspective to the signals. Thus, the special effect device 11 superior in stereoscopic picture effect can be realized by correcting the picture given perspective by quantity equivalent to the parallax so that it can be viewed as if it were placed obliquely in a virtual space.

Description

Detailed Description of the Invention

[0001]

[Table of Contents] The present invention will be described in the following order. TECHNICAL FIELD OF THE INVENTION Conventional Technology Problems to be Solved by the Invention Means for Solving the Problems Embodiments of the Invention (1) First Example (FIGS. 1 and 2) (2) Second Example (FIG. 3) (3) Other Examples Effect of the Invention

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a special effect device for giving a stereoscopic effect to a two-dimensional image.

[0003]

2. Description of the Related Art Conventionally, a three-dimensional special effect device has been known as a device for giving a sense of perspective to a two-dimensional image. As shown in FIG. 4, when the original image 1 is placed obliquely with respect to the surface of the screen 2 in a virtual three-dimensional space, this three-dimensional special effect device is closer to the front side than the image located far from the viewpoint 3. The original image 1 is deformed so that the image located at is visible larger and an image 4 for display is generated. For example, the original image 1 shown in FIG. 5 (A) is transformed into an image 4 shown in FIG. 5 (B).

[0004]

However, the image 4 obtained by this processing is only an image obtained when the original image 1 is projected on the screen 2, and the image 4 is actually present in the space behind the screen. It was impossible to give such a visual effect.

The present invention has been made in consideration of the above points, and it is an object of the present invention to propose a special effect device capable of giving a special effect to a two-dimensional image so that a perspective image can be obtained on a three-dimensional image. .

[0006]

In order to solve such a problem, according to the present invention, a left-eye image and a right-eye image forming a stereoscopic image are separately provided with a perspective equivalent to parallax. A signal processing unit that gives a correction value and deforms is provided.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

(1) First Embodiment FIG. 1 shows an example of a special effect device that gives a perspective image a perspective image. This special effect device 11 uses the image signal V _INL for the left eye.
And the image signal V _INR for the right eye are input, and signal processing that gives a sense of perspective to these is executed in parallel.

The special effect device 11 uses the image signal V _INL for the left eye.
Image signal processing device 12L used exclusively for the processing of the right eye and image signal processing device 1 used exclusively for the processing of the image signal V _INR for the right eye
2R and the amount of effect used to input the amount that gives an effect using the perspective method to each of the image signal processing devices 12L and 12R (that is, the amount of rotation that moves the screen in the virtual space in an oblique direction with respect to the screen) It is configured by the input device 13.

Since the image signal processing devices 12L and 12R have the same structure, the internal structure of the image signal processing device 12L will be described here as an example. Image memory 1
_{Reference numeral} 4 denotes a memory for storing an image for one frame, which writes the image signal V _INL for the left eye in accordance with the address given from the write address generator 15 and _reads the read address generator 1.
The image signal V for the left eye according to the address given from 6
It is designed to read _INL .

The read address generator 16 can reproduce an image corresponding to the rotation amount when the virtual plane on which the plane image is displayed is rotated from the plane parallel to the screen 2 to the front side or the back side. This is a circuit for changing the read address in order to generate an address considering the parallax between the left eye and the right eye. Here, the read address generator 16 has a microprocessor configuration and is used for a control device (CPU) 16A, a read only memory (ROM) 16B for storing a control program and a conversion table, execution of various arithmetic processes and storage of software programs. It is composed of a read / write memory (RAM) 16C and an interface 16D used.

The controller 16A calculates the read address (xm, ym) of the image memory 14 corresponding to the position (xs, ys) on the screen 2 from the following equation.

(Equation 1)

(Equation 2) Calculated based on The coefficients A to I and the offset values K and J used in these equations (1) and (2) are values given by the coefficient generator 17, and the distance corresponding to the parallax between the left eye and the right eye. Values that differ by minutes are used.

Incidentally, these coefficients A to I and the offset values K and J are control information (rotation amounts about the X, Y and Z axes) obtained by operating the input knob 13A provided in the effect amount input device 13. , Reduction ratio, display position). However, the values of the coefficients A to I are constant values that do not normally change during one field period, and the offset values K and J are offset values for converting the addresses calculated on the logical plane to the real memory address plane. It is a value. The offset values K and J are constant values unless the rotation center on the screen changes.

An image corresponding to a predetermined parallax can be obtained by reading the pixel data from the image memory 14 using the read address thus calculated, but the operator gives an instruction to reduce or enlarge the image. In this case, there may be no image data corresponding to the display position on the display screen.
The image data for that portion is supplied to the interpolation control circuit 18 and the interpolator 19.
It is generated by the interpolation processing of. Incidentally, the interpolation control circuit 18 inputs the same read address given to the image memory 14 from the read address generation circuit 16,
The display position and the like on the display screen where the interpolation image is to be inserted are given to the interpolator 19.

These image signal processing devices 12L and 12R
The image signal V _OUTL for the left eye and the image signal V _OUTR for the right eye obtained by
After being given to 0R, it is projected on the screen 2 through the polarization filters 21L and 21R having different polarization directions. Incidentally, when observing the left-eye image VL and the right-eye image VR projected on the screen 2,
In FIG. 1, it is performed through polarization filters 22L and 22R whose polarization directions are the same as those of the polarization filters 21L and 21R, respectively. As a result, the image for the left eye can be observed by the observer's left eye, and the image for the right eye can be observed by the right eye,
It can give a visual three-dimensional effect.

An example of the work contents using the special effect device 11 in the above-mentioned configuration will be described. First, the operator operates the effect amount input device 13 to input initial values such as the screen size S and the distance I (= 65 [mm]) between both eyes. When the initial setting is completed in this way, the operator operates the input knob 13A while checking the stereoscopic image projected on the screen 2 to determine how obliquely the virtual projection plane of the planar image should be arranged with respect to the screen 2. specify.

At this time, the control amount input by the input knob 13A is applied to the coefficient generator 17 and converted into the coefficients A to I and the offset values K and J corresponding to the left eye and the right eye. These values are given to the read address generators 16 of the corresponding image signal processing devices 12L and 12R, respectively, and read addresses suitable for image generation for the left eye and the right eye based on the equations (1) and (2). Is converted to. After that, the image data is read from the left-eye and right-eye image memory 14 based on the read address. At this time, a predetermined interpolation process is executed in the interpolator 19 for the pixels that need to be interpolated, and the projector devices 20L and 20L
It is projected on the screen 2 from 0R.

Here, as shown in FIG. 2, when the plane image of the original image is arranged on the screen 2 in the virtual space so as to be oblique to the screen surface, it can be seen by the left and right eyes. The image VL for the left eye and the image VR for the right eye, in which the shapes of which have been corrected (that is, the parallax) are added, are projected. At this time, the light beam projected from the projector devices 20L and 20R onto the screen 2 is the polarization filter 21.
It is given to an observer who observes the screen 2 through the polarization filters 22L and 22R having the same polarization direction as L and 21R. As a result, it feels as if the original image (the image of the letter "A" in this example) with no thickness and a certain thickness is actually arranged diagonally in the direction behind the screen 2 surface. Can be given.

According to the above configuration, the special effect excellent in the stereoscopic image effect is obtained by adding the correction corresponding to the parallax to the image having the perspective so that the image looks obliquely placed in the virtual space. The device can be realized. Moreover, the operator can rotate the stereoscopic image in the depth direction in the virtual space by only operating the one input knob 13A, and the editing work can be shortened.

(2) Second Embodiment In FIG. 3 in which parts corresponding to those in FIG. 1 are assigned the same reference numerals, one image signal processing device is used as a left eye image signal V _INL and a right eye image signal. The special effect device 31 shared with V _INR is shown. The special effect device 31 has switching switches 32 and 33 for switching and using the image signal input / output every one field period for the left eye or the right eye.

Here, the switching switch 32 is for giving the image signal V _INL for the left eye and the image signal V _INR for the right eye which are externally input to the image memory 14, and the switching switch 3 is provided.
Reference numeral 3 is for individually supplying the image signals read out and interpolated to the projectors 20L and 20R. The two switching switches 32 and 33 are switched by a switching control circuit 34, and a switching signal SW is applied from the switching control circuit 34 to the respective switching switches 32 and 33.

In the case of this embodiment, the image signal for the left eye V _INL and the image signal for the right eye V _INR are stored in the image memory 14 as separate images, and the read address of each image is generated. For the switching control circuit 34
The read address generated in the read address generator 16 may be switched based on the timing of the switching signal SW given from the interface 16E to the interface 16E, and the processing at the time of reading each image signal is the same as that in the above-described embodiment. It is the same.

Thus, also in the present embodiment, as in the case of the first embodiment, a stereoscopic image having a perspective effect applied to the left eye image signal V _INL and the right eye image signal V _INR is obtained in real time. It is possible to realize a special effect device that can be confirmed by. In the case of this embodiment, the image VL for the left eye
The right-eye image VR and the right-eye image VR are switched and displayed one frame at a time, but a stereoscopic image similar to that of the first embodiment can be obtained. In the case of the present embodiment, the structure can be simplified as compared with the first embodiment.

(3) Other Embodiments In the above embodiment, two projectors 20 are used.
Although the case where L and 20R are used as an image output device has been described, the present invention is not limited to this, and a liquid crystal display device or the like may be used as an output device. Further, in the above embodiment, the case where the amount of perspective effect is input using the input knob 13A has been described, but the present invention is not limited to this, and numeric input is performed using a button type input device such as a numeric keypad. May be.

[0025]

As described above, according to the present invention, images are separately deformed so that a left-eye image and a right-eye image forming a stereoscopic image each have a perspective equivalent to parallax. Thus, it is possible to realize a special effect device capable of giving a perspective image a stereoscopic image on a two-dimensional image.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a special effect device according to the present invention.

FIG. 2 is a schematic diagram for explaining a visual effect obtained by a special effect.

FIG. 3 is a block diagram showing an embodiment of a special effect device according to the present invention.

FIG. 4 is a schematic diagram used to describe image transformation processing by the perspective method.

FIG. 5 is a schematic diagram showing an image before deformation and an image after deformation based on the perspective method.

[Explanation of symbols]

1 ... Original image, 2 ... Screen, 3 ... Viewpoint, 4 ...
Image, 11, 31 ... Special effect device, 12L, 12R ...
... Image signal processing device, 13 ... Effect amount input device, 13A
...... Input knob, 14 ... Image memory, 15 ... Write address generator, 16 ... Read address generator, 20R,
20L ... Projector device, 21R, 21L ... Polarization filter, 32, 33 ... Switching switch, 34 ... Switching control circuit.

Claims (4)

[Claims] 1. A signal processing unit for transforming a left-eye image and a right-eye image, which form a stereoscopic image, by giving different correction values so that a perspective feeling corresponding to a parallax can be obtained. Characteristic special effect device. 2. A first storage means for capturing and storing a left-eye image, a second storage means for capturing and storing a right-eye image, the left-eye image and the right-eye image are displayed. Input means used to input the rotation amount for rotating and moving the virtual plane in the virtual space in the depth direction, and displayed on the virtual plane when the virtual plane is rotated and moved by the rotation amount. The first read address generating means for generating a first read address to be given to the first storing means, and the virtual plane for the rotation amount. A position for obtaining the right-eye image displayed on the virtual plane on the actual display screen when the image is rotated and moved by an amount, and generating a second read address to be given to the second storage means. 2 read address generating means Special effect device that is characterized. 3. The first and second storage means are formed in different areas on the same storage medium.
Special effect device described in. 4. The first and second read address generating means are shared by the left-eye image and the right-eye image, and the first read-out corresponding to the left-eye image is performed. The special effect device according to claim 2, wherein the second read address corresponding to the address and the right-eye image is alternately generated.