Building falling simulation method on basis of two-dimensional image
A technology of two-dimensional image and simulation method, which is applied in image data processing, animation production, instruments, etc., and can solve problems such as complex calculations
Inactive Publication Date: 2014-06-04
ZHEJIANG UNIV
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Building collapse simulation is a challenging problem. Traditional simulation methods require building modeling and a large number of complex calculations
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[0026] First define the abbreviations used in the following description: Axisaligned Bounding Boxes are abbreviated as AABB, and Bounding Volume Hierarchy is abbreviated as BVH.
[0027] figure 1 It is an overall flow chart of the present invention. The present invention takes an image with a building as input, and through the method flow of the present invention, outputs a video of a section of building collapse process. Each process flow of the present invention is described in detail below:
[0028] 1. Image preprocessing
[0029] Select a 2D image with buildings, use the quick selection tool to extract the buildings from the image, and use the hole filling algorithm to fill in the background. If there are still discordant pixels in the background after processing, smooth the background through smoothing filter. Specific process such as figure 2 shown.
[0030] 2. Building grid generation
[0031] For the extracted buildings, use N*M grid to divide them into N*M part...
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The invention provides a building falling simulation method on the basis of a two-dimensional image. The method comprises the following steps of: (1) selecting one two-dimensional image with a building, removing the building from the two-dimensional image and then complementing the background by a cavity filling algorithm; (2) dividing the removed building into an N*M grid and on the basis of the grid, dividing the building into a plurality of building blocks according to grid lines; and (3) applying forces with different sizes to different positions of the building grid, so that the building grid is cracked in different modes to simulate different modes of falling processes, generating smaller building blocks from the building blocks according to the cracking of the grid, then adding all the building blocks into a particle system to carry out management, using an Axis Aligned Bounding Box (AABB) to accelerate the collision detection of the building blocks and applying the particle system to simulate smoke. The invention provides an efficient and relatively direct method; and a video of the whole building falling process can be generated in real time by inputting a picture with the building.
Description
technical field [0001] The invention relates to a building collapse simulation method based on two-dimensional images. Background technique [0002] The building collapse simulation method based on two-dimensional images belongs to the virtual scene generation technology, and has great application prospects in the animation and film industries. Building collapse simulation is a challenging problem. Traditional simulation methods require building modeling and a large number of complex calculations. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a building collapse simulation method based on two-dimensional images, which is an efficient and relatively direct method, input a picture with a building, and a video of the entire building collapse can be generated in real time . For this reason, the present invention adopts following technical scheme: it may further comprise the steps: [0004] (1) Image preprocessin...
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IPC IPC(8): G06T13/80
Inventor 卞刚峰童若锋
Owner ZHEJIANG UNIV