Image-based rendering and visualization of three-dimensional object and method for the representation and visualization of animated object

 

The invention relates to the representation of three-dimensional objects obtained using photos of real objects. It should be used for rendering three-dimensional images allows to obtain a technical result in providing compact storage of the image information, fast rendering with high quality output image. This result is achieved due to the fact that the method involves transforming the original data of a three-dimensional object into an intermediate representation, the data conversion of the intermediate representation into a representation for visualization in the form of describing a cube, with each face of which is mapped layered image with depth, and visualization of the received view, this determines the visible faces describing a cube based on the position of the observer, for each of the visible faces are converting a layered image with depth in texture and visible faces with texture render. 2 C. and 7 C. p. F.-ly, 9 Il.

Description text in facsimile form (see graphic part)e

Claims

1. Rendering and visualization Treherne the formation of these intermediate representation into a representation for visualization in the form of describing a cube, with each facet of which is mapped layered image with depth, and visualization of the received view, this determines the visible faces describing a cube based on the position of the observer, for each of the visible faces are converting a layered image with depth in texture and visible faces with texture render.

2. The method according to p. 1, wherein when converting the original data of a three-dimensional object into an intermediate representation of a three dimensional model placed in describing the cube, the orthogonal projection model on all facets describing the cube, resulting in each face receives the image of the model with a given pixel, for each pixel in the received image calculate the corresponding depth value representing a distance from a point on the model surface to the appropriate edge of describing the cube, resulting in each face get a grayscale image, the brightness of each point of which corresponds to the depth at this point, remember data received 12 images in the form of 6 pairs, with each pair of cards consists of color images and grayscale images of the respective faces to define a cube.

3. The method according to p. 1, wherein when converting the original data of a three-dimensional object into an intermediate representation get layered image with depth and form appropriate layered depth image format for describing each face of the cube.

4. The method according to p. 3, characterized in that when forming the multi-layered images with depth for describing each face of the cube exclude point intermediate image, if the angle between the normal at the point and the normal to a face of the cube is less than a predetermined value.

5. The method according to any of paragraphs. 1-4, characterized in that conversion for each of the visible faces of the layered images with depth in the texture determines the size of the texture depending on the observer's position relative to the face, split face on the quadrants of the coordinate axes, the origin of which coincides with the point, which is the orthogonal projection of the observation point on the plane of the faces for each quadrant determine the direction of traversal of a layered image with depth in rows in the direction mentioned the origin and depth from the most remote from the plane of the face points to the closest, and is xture, when a negative test result the corresponding image point pass and move to the next point, while a positive test result carried out the functional transformation of coordinates and depth of the pixels of the image into the coordinates of the points on the resulting texture, and the point textures with the received coordinates form a splat.

6. The method according to any of paragraphs. 1-5, characterized in that the data of the intermediate representation used to store information about the model a three-dimensional object.

7. The method of representation and visualization of animated three-dimensional object that includes the transformation of the original data of a three-dimensional object into an intermediate representation, the conversion data for the frames of the intermediate representation into a representation for visualization in the form of describing a cube, with each face of which is mapped layered image with depth, and visualization of sequence submissions received for each frame to determine the visible faces describing a cube based on the position of the observer, for each of the visible faces are converting a layered image with depth in texture, and visible faces with texture render.

what a great representation of the three-dimensional model placed in describing the cube for each animation frame orthogonally projecting the model on all facets describing the cube, resulting in each face receives the image of the model with a given pixel, for each pixel in the received image calculate the corresponding depth value representing a distance from a point on the model surface to the appropriate edge of describing the cube, resulting in each face get a grayscale image, the brightness of each point of which corresponds to the depth at this point, remember the data received 12 images in the form of 6 pairs, with each pair of cards consists of a color image and a halftone image corresponding to the verge of describing Cuba, and received 6 pairs of cards to build a layered image with depth for describing each face of the cube.

9. The method according to p. 8, characterized in that the intermediate representation in the form of six streams of video data compressed using the compression format of the group (MPEG 4, and to store information about the color use the color channels and for storing depth maps using an alpha channel.

 

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SUBSTANCE: using a system for three-dimensional geometric modeling, volumetric model of product is made, separated on thin transverse layers and hard model is synthesized layer-wise, thickness A of transverse layers is picked from condition, where A≤F, where F is an allowed value for nominal profile of model surface and generatrix of model surface profile passes through middle line of transverse layers.

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