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Question about how to get the accurate distance to object? #637

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QiuYilin opened this issue Feb 28, 2019 · 3 comments
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Question about how to get the accurate distance to object? #637

QiuYilin opened this issue Feb 28, 2019 · 3 comments
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@QiuYilin
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QiuYilin commented Feb 28, 2019 •
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I know there is a function to get distance in librealsense2 api. But how to get distance by ros package if I know the x and y coordinate in camera/color/image_raw. It seems that I need to subscribe /camera/depth/color/points. But I know little about how to transform rgbxyz to distance. Can anyone give some suggestions?
@QiuYilin QiuYilin changed the title Duestion about how to get the accurate distance to object? Question about how to get the accurate distance to object? Feb 28, 2019
@doronhi
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doronhi commented Feb 28, 2019

you should subscribe to aligned_depth_to_color and check the value of the color pixel on that image.

@doronhi doronhi added the wait_to_close wait to see if problem is solved. label Mar 4, 2019
@RealSenseCustomerSupport
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[Please Ignore - RealSense system comment]

@Ageneinair
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Can I ask you how to get distance in librealsense2 api (python wrapper)?

@MartyG-RealSense MartyG-RealSense mentioned this issue May 20, 2021
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@QiuYilin @Ageneinair @doronhi @RealSenseCustomerSupport