# Unable to find Cvb::Foundation::ConvertColorSpace Namespace, Cvb::Foundation::Lut based functions in Linux

**URL:** <https://forum.commonvisionblox.com/t/unable-to-find-cvb-convertcolorspace-namespace-cvb-lut-based-functions-in-linux/1045>\
**Category:** Programming Questions\
**Created:** [February 5, 2020, 3:58pm UTC](https://forum.commonvisionblox.com/t/unable-to-find-cvb-convertcolorspace-namespace-cvb-lut-based-functions-in-linux/1045 "2020-02-05T15:58:57Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![arunsid123](https://avatars.discourse-cdn.com/v4/letter/a/a87d85/32.png) [@arunsid123](https://forum.commonvisionblox.com/u/arunsid123)\
**Post date:** [February 5, 2020, 3:58pm UTC](https://forum.commonvisionblox.com/t/unable-to-find-cvb-convertcolorspace-namespace-cvb-lut-based-functions-in-linux/1045/1 "2020-02-05T15:58:58Z")

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I am working on Ubuntu 16.04 system, and i see in the executable that its not accessible or compiled for WIN32 based systems?How can i access color space based convertion funtcions,like RGBtoGRAY color space in linux?

Also LookUpTable based functions in linux,are these functionalities not available in linux? How could i use them in linux?

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**Author:** ![illusive](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.commonvisionblox.com/illusive/32/61_2.png) [@illusive](https://forum.commonvisionblox.com/u/illusive)\
**Post date:** [February 6, 2020, 1:47pm UTC](https://forum.commonvisionblox.com/t/unable-to-find-cvb-convertcolorspace-namespace-cvb-lut-based-functions-in-linux/1045/2 "2020-02-06T13:47:35Z")

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Hi @arunsid123,

sorry, but this functionality is not yet available in the Linux builds of :cvb: