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Questions tagged [openvx]

OpenVX is an open, royalty-free standard for cross platform acceleration of computer vision applications.

Link to Khronos Group OpenVX website.

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tiovx-app-host error on arago yocto project on cunstom AM57xx board

I'm trying to compile tiovx-app-host for arago yocto(ROCKO) project for AM57xx-evm board its compiled, But same for my custom am57xx board gives an error regarding ld. Even I did not changed tiovx-app-host.bb file. DEBUG: Executing shell function…
yoctotutor.com
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What is VX_API_ENTRY and VX_API_CALL in Khronos openvx standard?

I am studying Import Export Extension of Khronos openvx. while reading vx_import.h file I saw VX_API_ENTRY vx_status VX_API_CALL vxReleaseImport(vx_import *import); function. I want to understand why they have written VX_API_ENTRY and…
Abhijeet Bhilare
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Copying cv::Mat to a vx_image

I'm looking at optimising some code with NVidia's OpenVX, and from previous experience with the CUDA API, GPU memory allocation is always a significant overhead. So, I have a series of cv::Mat from video that I want to copy into an image; the naive…
Ken Y-N
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Error: vx_tensor and VX_TYPE_TENSOR undeclared when installing OPENVX tuorial package

I am a newbie of OpenVX and am trying to install the tutorial package for learning. I follow the instruction in Khronos OpenVX Tutorial Material to build it on my Ubuntu 16.4, the process is as followed. 1----- Download the tutorial package at the…
Dan Do
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What is the full form of openVX?

What is the full form of openVX. What does V and X stand for in openVX. (I have searched it in google and couldn't find the full form)
user_12
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Read write and display image using openVX

I am trying to read image using openVX. I have written following program by referring some samples. #include #include //#include #include //#include using namespace std; int main(int…
user_12
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What is the difference between API vxReleaseNode and vxRemoveNode in OpenVX object node?

I am trying to understand the Open-vx object node for one of my requirement.I have gone through the specification but not able to understand the exact difference between an API vxRemoveNode() and vxReleaseNode(). Spec says vxReleaseNode : "Releases…
Hemant
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VisionWorks create Mat vx_image from Mat

I am following the opencv_npp_interop example as reference to convert an OpenCv Mat to vx_image but the example only shows for greyscale image (single channel). So I have tried to modify it for 3-channel (RGB) Mat to vx_image (RGB). vx_image…
Muhammad Ali
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OpenVx immediate code and Graphs not giving similar results

I have converted the following OpenVx Sobel immediate code to Graph based . But the results done match. Immediate code works fine, it gives proper result. Whereas Graph code takes "longer" than the immediate code for a single image and produces…
Muhammad Ali
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Does opencv for tegra (Jetson TK1) make use of npp and openvx underneath?

Does OpenCv for Tegra devices supplied with Linux 4 Tegra make use of NPP and OpenVX underneath ? Or do I have to make such optimizations myself ? Any reference to a link pointing to proof would be appreciated.
Muhammad Ali
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OpenVX optical flow pyramids performance

The question is about performance of OpenVX compared to the traditional OpenCV package. Do you know guys, which of them is faster in the calculation of optical flow pyramids? The function in OpenCV for this operation is following: …
Александр Васильев
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How do i create a node in OpenVX Framework to find the FFT(Fast fourier transform) of an image?

Does anyone know how to create a user-node to calculate the FFT of an image or videoframe using the OpenVXFramework. I want find the FFT values form video frames to calculate the vibration in video frames.
SVJ
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