外部LED投影仪VS深度质量

1.相机的激光功率设置与点可见性之间存在关联。
激光功率设置得越低，图案变得越不可见。
2.点阵图案可以为相机提供纹理细节以锁定，以在具有低纹理细节的表面（例如墙壁和门）的情况下增强深度图像结果。
3.您可以将投影机移离相机的深度传感器一段距离，而不会对相机看到的纹理量产生负面影响。



以下为原文

1.  There is a relationship between the camera's Laser Power setting and the dot visibility.  The lower that Laser Power is set at, the less visible the pattern becomes.
 
2.  The dot pattern can provide the camera with texture detail to lock onto to enhance depth image results in situations where there are surfaces with low texture detail, such as walls and doors.
 
3.  You can move the projector a distance away from the camera's depth sensor without negatively impacting the amount of texture that the camera sees.

嗨MartyG，
谢谢你的快速回答！
但是你可能会误解我的问题。
我知道如何调整内部投影机的激光功率。
我在图中使用的投影仪是外部LED投影仪而不是激光投影仪。
所以我的问题是：如果室内灯或甚至太阳光比LED投影仪的投影点图案更亮，传感器是否仍能看到点图案？
在这种情况下，人类无论如何都无法用肉眼看到圆点图案。
谢谢，
可靠的人



以下为原文

Hi MartyG,
Thanks for the prompt answer!
 
However you may misunderstand my questions. I know how to tune up the internal projector's laser power. The projector I used in the figure is an external LED projector rather than a laser projector.
 
So my question is: if the room light or even sun light is brighter than the projected dots pattern from LED projector, can the sensor still see the dots pattern? In this situation, human can't see the dots pattern by naked eyes anyway.
 
Thanks,
Jake

我意识到你的意思并回来修改我的答案，但你已经回复了。
400系列相机在强光下表现更佳，并且该光线增加了纹理细节。
所以在强光下，相机不需要点图案来提供纹理。
回复：Realsense D435 pointcloud中的噪音
我意识到这不是你问的问题。
您想知道外部投影仪点图案的相机深度传感器的可见性是如何受到影响的。
来自英特尔支持的Jesus G表示，“D400适用于红外和可见光。对于室内，它有红外投影仪照亮低纹理的场景，如果红外线没有反射在某些表面如地毯上，立体相机会工作
可见光。“
所以我推测，如果相机无法看到外部投影仪的图案，那么它将根据可见光进行分析，就像使用自己的投影仪一样，



以下为原文

I realized what you meant and came back to amend my answer, but you had already replied. 
 
The 400 Series cameras perform even better in strong light, and texture detail is increased by that light.  So in strong light, the camera should not need the dot pattern to provide texture.
 
Re: Noise in Realsense D435 pointcloud
 
I realize that is not what you were asking though.  You wanted to know how the visibility to the cameras depth sensor of your external projector's dot pattern would be affected.   Jesus G from Intel Support has stated, "D400 works with both IR and Visible light.  For Indoors, it has the IR projector to illuminate scenes with low texture and if IR is not reflected on certain surfaces such as carpets, the stereo camera works off of visible light."
 
So I would speculate that if the camera cannot see the pattern of your external projector then it will analyze based on visible light like it does with its own projector,

我感谢你的回答！
因此，我可以这样思考：如果房间的灯光比投影机的灯光更亮，而人眼看不到这些点，那么相机将不再利用投影的点阵图案。
谢谢。



以下为原文

I appreciate your answer! So can I think in this way: If the room light is brighter than the projector's light in which the dots is invisible to human eyes, then the camera won't take advantage of the projected dots pattern anymore.
 
Thanks.

我相信你对这种情况的评价很好。
但是，根据您点亮的房间的图像来判断它仍然值得使用投影机。
这些点作为白色覆盖物略微可见，因此可以帮助相机看到较暗的表面（黑色/灰色），就像在表面上喷洒像脚粉或婴儿爽身粉一样的细粉。



以下为原文

Your evaluation of the situation is a good one, I believe.  It may still be worth using the projector though, judging by your image of the lit room.  The dots are slightly visible as a white-ish covering, so may help the camera to see darker surfaces (black / grey) in the same way that spraying fine powder like foot powder or baby powder on a surface does.

好主意在身体上添加粉末。
谢谢！



以下为原文

Good idea to add powders on the body. Thanks!