JPH0142427B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image generating apparatus, more specifically,
Images of a target object observed from various directions,
It relates to a device that generates data based on a stored image of the object.

To generate images of an object observed from many directions, it is necessary to record the images actually observed from many directions, or to memorize all the three-dimensional shapes of the object and then use that data. There are several ways to generate this problem, but either method requires a huge amount of image data to be recorded. Particularly in the latter case, for the reasons mentioned above, only simple structures can be used in practice.

The present invention provides an apparatus that can generate images of a target object viewed from many directions by classifying viewing viewpoints and reducing the image storage capacity for each. Hereinafter, the present invention will be explained in detail with reference to the drawings. FIG. 1 shows a block diagram of essential parts of an embodiment of the present invention. First, the time of input will be explained. A target object is placed in a space divided by horizontal and vertical lines passing through the viewpoint, and an image is taken by an image input device 1 composed of a television camera or the like, and the image is stored in an image storage device 2. The stored image is displayed on an image display device 5 through an image calculation device 3 and an output control circuit 4. For example, when the target object is a television receiver, an image as shown in FIG. 2 is displayed on the display surface of the image display device 5.

Next, the shape model generator 6 generates a signal of a shape model that is closest to the shape of the target object. For this purpose, for example, basic geometric shape models such as rectangular parallelepipeds, cylinders, cones, triangular pyramids, etc. are stored in the shape model generator 6 in advance, and the operator observes the target object and generates the closest basic geometric shape model to it. This can be achieved by selecting a geometric model. In the case of a television receiver as shown in FIG. 2, a rectangular parallelepiped shape model is selected. This shape model signal is sent to the shape model calculation device 7 and the output control circuit 4.
The image is guided to an image display device 5 using a cathode ray tube. The shape model calculation device 7 calculates the amount of three-dimensional deformation of the image displayed on the image display device 5 in accordance with the command from the three-dimensional deformation operation device 10 operated by the operator. Under control from the arithmetic unit 8, a projected image is created when the geometric size and three-dimensional position of the basic geometric shape model are changed. The output control circuit 4 has a stored image of the target object, such as the one shown in FIG. Control is performed so that the display shown in FIG. 3 is superimposed. The operator manipulates the projected image of the basic geometric shape model, displays any of the example images shown in Figure 3 a, b, c, and d, and creates a shape model that is most in contact with the target object. . For example, the shape model 51 shown in FIG. 4 is the one shown. After creating such a shape model with the largest number of contact points, the shape model is stored in the shape model storage device 9 in correspondence with the stored image of the target object in the image storage device 2. Of course, in the case of a target object with a complex shape, a plurality of shape models can be associated with it.

This device regards the target object as the shape of a shape model stored in the shape model storage device 9, and regards the pattern (texture) on each surface of the object as a stored image stored in the image storage device 2, and functions as described below. Do this.

Next, based on the above shape model and memory image,
We will discuss how to generate projected images that can be observed when an object is moved within a certain range of space or from a different viewpoint. In the three-dimensional deformation calculation device 8,
In accordance with instructions from the three-dimensional deformation operation device 10 operated by the operator, a projected image due to three-dimensional positional changes of the shape model from the shape model storage device 9 is calculated. The amount of deformation of each surface of the shape model is calculated. . The image calculation device 3, which is controlled by the amount of deformation of each surface from the three-dimensional deformation amount calculation device 8, deforms the stored image from the image storage device 2 and sends its output via the output control circuit 4. Displayed on the image display device 5.

By adopting such a configuration, for example, as shown in FIG. 5, the stored image 54 of the target object can be changed to various types of the target object as shown at 52, 53, 55, and 56 according to the operator's instructions. A visual image from the direction can be obtained. Of course, in this case, it is not possible to change the direction so that the hidden surface can be seen, so if such a request is made, another set of memory images and shape models will be required for the same target object. Although the present invention cannot provide accurate observation images for parts that are not in contact with the shape model, by setting multiple shape models and devising the field to which this device is applied, the above-mentioned results can be achieved. In many cases, the shortcomings do not matter much.

As described above, according to the present invention, it is possible to realize a device that can greatly reduce the image storage capacity compared to the conventional method and can generate images of a target object observed from many directions. There is something very big about it.

[Brief explanation of drawings]

FIG. 1 is a block diagram of main parts showing an embodiment of the present invention, FIG. 2 is a diagram showing an example of an image of a target object,
Figures 3a, b, c, and d are diagrams showing each example of the shape model, Figure 4 is a diagram showing an example of the shape model associated with the target object, and Figure 5 is a diagram showing each example of the shape model. FIG. 3 is a diagram showing examples of images observed from various directions that can be generated. 1... Image input device, 2... Image storage device, 3
...Image calculation device, 4...Output control device, 5...
Image display device, 6... Shape model generator, 7...
. . . Shape model calculation device, 8 . . . Three-dimensional transformation amount calculation device, 9 . . . Image model storage device, 10 .

Claims (1)

[Scope of Claims] 1. A stored image signal of a target object captured by an image input device and stored in an image storage device is applied to an image processing device, and the three-dimensional shape of the target object stored in a shape model storage device is Calculating the amount of deformation based on the corresponding shape model and arbitrary viewpoint position information different from that at the time of imaging inputted from the three-dimensional deformation operation device 3
The image processing device deforms the stored image according to the output of the dimensional deformation amount calculation device, and generates a calculated image from a different viewpoint than when the target object was captured and stored. Image generating device. 2. In the image generating device according to claim 1, a plurality of basic geometries are stored in the shape model generating device in advance with respect to the shape model corresponding to the three-dimensional shape of the target object stored in the shape model storage device. The basic geometrical model is stored, and the basic geometrical model selected by the operator is added to the geometrical model calculation device, which is controlled by the output of the three-dimensional transformation operating device operated by the operator.
An image of the basic geometric shape model whose size and spatial position have been changed is created by the shape model calculation device based on the signal from the dimensional deformation amount calculation device, and is displayed on the image display device through the output control circuit. On the other hand, by displaying the image of the target object from the image storage device together with the transformed image of the basic geometric shape model on the image display device through the output control circuit without being transformed by the image processing device, An image generation device characterized in that an operator interactively determines a shape model corresponding to the three-dimensional shape of the target object and stores it in the shape model storage device.