2D图像到3D视图

Question

I need to be able to generate a 3D perspective from a bunch of 2D images of a pipe.

Basically... We have written software that interprets combined data from laser and sonar units to give us an image slice from a section of pipe. These units travel through the pipe and scan the inside of the pipe every 100mm. All of this is working great. My client now wants to take all these 2D image slices and generate a 3D view so they can "travel" through the pipe looking at defects etc.. that are picked up by the scans. We can see the defects in the 2D images but there can be hundreds of images in a single inspection - hence the requirement to be able to look through the pipe.

I am doing this in VS2010 on the .NET 4 platform in C#.

I am honestly clueless as to where to start here. I am not a graphics developer so this is all new territory to me. I see it as a great challenge but need some help kicking off - and a bit of direction.

Any help appreciated :)

Mike

Answer 1

嗯，每10厘米不是很详细。.但是，您需要扫描管道的像素，创建一个封闭的多边形列表，然后仅使用三角带将一组连接到下一组，一直沿管道向下。

Answer 2

Try to start with very basic 2d instead of full blown 3d rendering - may be good enough. Pipe when you look at it from inside can be represented as several trapeze. Assuming your images are small cylinder portions of a pipe - map each stripe to trapezoids (4 would be good start - easy to position) and draw than in circular pattern. You may draw several stripes this way at the same time. To move back/forward - just reassign images to trapezoids.

If you need full 3d - consider if WPF would work, if not - XNA or some OpenGL library will give you full 3d.

Answer 3

You don't specify the context, 100mm sample intervals may be sparse (a 1m pipe) or detailed (10km pipe). Nor do you specify how many sample points there are (number of cross sections and size of cross section image).

A simple way to show the data is to use voxels where each pixel on a cross section is treated as a cube and adjacent samples form adjacent cubes (think Minecraft). The result will look blocky but as it's an engineering / scientific application this is probably preferable. Interpolating the model to produce a smooth surface may hide defects or make areas appear to be defective. Also, rendering a cross section through a voxel is a bit easier than a polygon surface.