I want to do a point-to-point measurement function, I would like to ask whether the function is possible to achieve.

[chaoyang915506]

I want to do a point-to-point measurement function, I would like to ask whether the function is possible to achieve. Can be realized if there is no recommended direction

[mkkellogg]

Sorry for the late response, how did you want to achieve the measurement? You could certainly use the built-in ray caster to get the 3D position (as a Three.js vector) of splats under the cursor and then use three.js functionality to calculate the distance between them. Would that work?

[JeS24]

@chaoyang915506 If you want to do this outside of writing JS code, you can open the GS .ply files in CloudCompare and compute cloud-to-cloud/mesh distances, perform change detection, or calculate other statistical quantities. There is also this converter -- https://github.com/francescofugazzi/3dgsconverter to convert the GS .ply files into CC-compatible point clouds, although it usually strips the color information (even with the --rgb flag).

[chaoyang915506]

抱歉回复晚了，您想如何实现测量？您当然可以使用内置的光线投射器来获取光标下的 splats 的 3D 位置（作为 Three.js 向量），然后使用 Three.js 功能来计算它们之间的距离。那行得通吗？

Sorry for the late response, how did you want to achieve the measurement? You could certainly use the built-in ray caster to get the 3D position (as a Three.js vector) of splats under the cursor and then use three.js functionality to calculate the distance between them. Would that work?

Ok, thank you very much. May I ask what the splatIndex in the ray collision point stands for? The quality of my Gaussian file is not very good, and the situation of clicking into the air may occur. Besides optimizing the Gaussian file, is there any other way to recommend it?

[mkkellogg]

You probably don't need to worry about splatIndex, that just tells you the relative order of the splat within the file from which the splats were loaded. I mainly have it there for debugging purposes :)

[chaoyang915506]

You probably don't need to worry about splatIndex, that just tells you the relative order of the splat within the file from which the splats were loaded. I mainly have it there for debugging purposes :)

I want to know how the splatIndex field relates to the raw data in my Gaussian file. This allows you to filter out some of the noise generated in the file when you click on the ray.

[seppestaes]

@mkkellogg : Please keep the splatIndex in there :)

[mkkellogg]

I will definitely keep splatIndex in there :) Is this issue resolved now?

[mkkellogg]

I'm going to close this one for now, let me know if you have any further trouble!

[seppestaes]

Didn't have an issue, just responded to the splatIndex. Thx for keeping it in there :)