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Image based plotting method

An image and reference image technology, applied in 3D image processing, image data processing, instruments, etc., can solve problems such as inability to effectively obtain reference images, and achieve the effect of eliminating deformation

Inactive Publication Date: 2011-07-27
PEKING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method aims to solve the problem that the reference image cannot be effectively obtained at the bottom of the object and its geometric shape and texture information can be restored correctly, so that the drawing result is more realistic and can be browsed freely in a wider range

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Embodiment Construction

[0035] The specific implementation method of the present invention will be described in detail below in conjunction with the accompanying drawings of the present invention.

[0036] The flow process of the image drawing method of the present invention is as follows figure 2 As shown, the specific steps are as follows:

[0037] Step 1 acquires a set of reference images by shooting the target object placed in the calibration field from different directions. In order to facilitate the acquisition of information on the bottom of the target object, the present invention uses a plane mirror image acquisition platform. Such as image 3 As shown, the image acquisition platform is composed of a transparent glass and a plane mirror with calibration objects distributed on the other side. The function of the plane mirror has two points: (1) while taking the reference image of the target object, obtain the image of its bottom in the plane mirror; (2) the concentric circle calibration o...

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Abstract

The invention pertains to the field of computer graphics and a virtual reality technology, in particular to a plotting method based on an image. By obtaining preference images comprising a base image as well as a base virtual reference image and a corresponding virtual camera parameter thereof through calculation on base of a base image in a plate mirror, a target object visual convex hull is constructed and a new view under a new viewpoint is plotted. The plotting method obtains the image of the base of an object while collecting a general reference image and effectively eliminates a metamorphism which easily appears in the prior art, thus bringing more sense of reality to the plot result and being capable of realizing the a free browsing in a wider range.

Description

technical field [0001] The invention belongs to the technical fields of computer graphics and virtual reality, and in particular relates to an image-based drawing method. Background technique [0002] One of the main goals of computer graphics is to achieve real-time rendering of photorealistic graphics on computers with ordinary computing power. Various 3D modeling methods can help us build complex models to describe objects in the real world, and then synthesize complex virtual scenes. In the field of computer graphics, there are generally two categories of methods for modeling and rendering of real scenes: geometry-based modeling and rendering (GBMR) and image-based modeling and rendering (IBMR). [0003] Geometry-based modeling describes the scene as basic geometric primitives, and generates virtual composite images by defining properties such as light sources and object surface materials, and calculating rendering formulas. Geometry-based rendering is computationally ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/00G06T15/10
Inventor 冯洁宋本聪周秉锋
Owner PEKING UNIV