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Changing the color scheme of the live feed

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G Rahul

Hi,

I'm very new to depth camera and trying to know the distance by using the color scheme.My target is to have one color for a range of distance. 

For example: 0.5m ~ 0.55m : Red, 0.55m ~ 0.65m : blue, 0.65m onwards, yellow.

I could use the depth visualization distance to specify the range.  But using the visual preset as fixed, I get the whole spectrum of colors. 

I'm using D435 camera. 848X848 resolution @30FPS

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  • MartyG

    Hi G Rahul  If your preference is for yellow and red in the color range then using Visual Preset Fixed and Color Scheme Warm may meet your needs.

     

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  • G Rahul

    I'm sorry if my question was confusing. My requirement is to define the color for a given range (like shown in the pic attached). In the warm tone also, since there is a gradient I can not judge the distance by just looking at the shade.

     

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  • MartyG

    No problem at all, I understand the question.  Whilst you may be able to achieve the color range that you desired by using the Warm color scheme, you will not be able to define a precise range for each specific color.  The best that you may be able to do is to enable the Histogram Equalization option and set a minimum distance of 0.50 and a maximum of 0.75.

     

    If readability of the color gradient is important then the monochrome White to Black color scheme may work better.

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  • G Rahul

    Yes, that's what I was trying so far. Setting the min and max distance and using Histogram Equalization. I was trying if I can make it more precise. Thank you for clarifying that it is not possible to define the precise range for each color. 
    I'll try with the monochrome scheme if I can achieve the desired results. 
    Just an ad-on: Is it possible to change the scale we see on the right side? When I set the min and max distance, it works but the scale remains the same. So maybe if it is possible to zoom in to that scale, I can judge the distance.

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  • MartyG
    • Edited

    0-4 is the smallest scale that the Viewer's depth scale can be displayed in.  Changing the camera's Depth Units value just compresses the color information into a short bar.

     

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