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How to generate (E) ground truth pose and (f) predicted pose. #53

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jinzhiyang1 opened this issue Nov 19, 2020 · 7 comments
Open

How to generate (E) ground truth pose and (f) predicted pose. #53

jinzhiyang1 opened this issue Nov 19, 2020 · 7 comments
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@jinzhiyang1
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对于之前的问题,感谢您给出的建议,现在我还有一个疑问就是怎么生成这样的图片呢?,期待您的回复。

@chensong1995 chensong1995 added the question Further information is requested label Dec 4, 2020
@chensong1995
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jinzhiyang1 你好,

感谢你对我们工作的关注!你可以把三维的点云用预测到的 R 和 t 以及 K 投影导二维平面,然后用 opencv 来画这样的图片。

希望这有帮到你!

@Hautien
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Hautien commented Jan 22, 2021

我理解这里显示的mask不光是仅投影点吧,是不是要将投影后的点连接成面显示出来?谢谢!

@chensong1995
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如果想让画出来的效果是连续的,可以考虑投影三维的三角形网格。

@Hautien
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Hautien commented Jan 22, 2021

@chensong1995 非常感谢您的回复。另外我还有个问题想要向您请教以下:现在我需要制作自己的数据集,其实关键就是如何生成李群T。因为采集的图片都是在高空,不可能在模型上面或周围放些定位码或者传感器之类的来辅助定位2d点的信息。我想到的唯一的方法就是类似于PASCAL3D+数据集那样手工标记点然后通过优化算法得到位姿T,我注意到这些数据集假定的相机模型都是4个自由度:azimuth, elevation, in-plane rotation, distance,但是LINEMOD数据集计算的T均是6个自由度,也就是3D的R + 3D的t。我很好奇为什么用4d的相机模型也能将3D模型准确投影到2d图像上?既然这样的话,为什么还要做6d pose estimation呢?

@Hautien
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Hautien commented Jan 22, 2021

oh, I figured out after read paper. i found the camera in PASCAL3D+ can only face the origin of the object.

@chensong1995
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Hello InceptionV5,

I am glad you have figured out the issue. I wish you the best of luck with your project!

Best,
Chen

@Hautien
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Hautien commented Jan 23, 2021

Thanks

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