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Travel-in-picture method based on relative depth computing

A technology of in-depth computing and picture-in-picture, applied in computing, 3D image processing, image data processing, etc., can solve problems such as affecting users' realism

Inactive Publication Date: 2007-01-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the modeling process of picture-in-picture technology, the original height equivalent estimation method is difficult to meet the demand, which directly affects the user's sense of reality in the process of picture-in-play

Method used

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  • Travel-in-picture method based on relative depth computing
  • Travel-in-picture method based on relative depth computing
  • Travel-in-picture method based on relative depth computing

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Embodiment Construction

[0026] The technical scheme adopted by the present invention to solve the technical problem is: define the image plane as a plane perpendicular to the ground. The original image is located on the image plane, and the bottom edge of the original image is placed on the intersection line between the image plane and the ground plane. In this scheme, the original image placed in this way is called the reference image. Introduce the concept of "Relative Depth (RD)", that is, the distance depth between the model and the image plane. In the painting-in-picture technique, "relative depth" is the distance depth between the image plane and the back wall of the model. According to the principle of perspective geometry, on the basis of constructing the spider grid, the relative depth of the model can be calculated from the definition of the reference image. On this basis, the relative dimensions of the model can be further calculated. The so-called relative size means that the calculate...

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Abstract

The invention discloses a paint method based on relative depth calculation. The steps are: (1) confirms the image dead point quantity; carries partition of foreground and background; to the foreground, prepares foreground mask diagram; to the image background part, prepares background image, and constructs spider grids; (2) carries on calculation of depth and model relative size to the background image according to the dead point quantity, which includes video points confirmation, acquires data from spider grid and carries on calculations of relative depth and relative size; (3) carries on construction of foreground and background according to the value of depth and model size; and carries on texture mapping to background and foreground models with background image and foreground mask image, and localizes the camera, acquires the output image. The method is pointing to regular building, and it can work out the relative size and position of its three-dimension model form the two-dimension image.

Description

technical field [0001] The invention relates to a picture-in-picture swimming method based on relative depth calculation. Background technique [0002] Image-Based Rendering (IBR) is a virtual reality technology that draws from a series of captured images or points that are not connected, so as to obtain a better three-dimensional roaming effect. It has extensive and in-depth applications in film and television special effects production and entertainment advertising. But at the same time, in general, the amount of data required to express a scene by this technology is too large, and sampling is too difficult. Y. Horry proposed the Tour Into the Picture (TIP) technology in 1997. This technology can simply roam a two-dimensional photo, which better solves the sampling problem in IBR technology. The picture-in-picture technology gives a simple 3D model, which is composed of some 3D polygon frames and billboards, so that a variety of pleasing high-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T15/00
Inventor 曹智清石教英
Owner ZHEJIANG UNIV
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