使用OpenCL提升OpenCV图像处理性能 | speed up opencv image processing with OpenCL

本文介绍了如何借助OpenCL提升OpenCV的图像处理性能。OpenCL是一个框架,允许在异构平台上编写程序,并根据设备特性分配任务。在OpenCV中,用户无需直接操作OpenCL库,透明API会处理所有细节。文章提供了编译OpenCV的配置说明,以及使用Mat和UMat的例子。

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speed up opencv image processing with OpenCL

Guide

OpenCL is a framework for writing programs that execute on these heterogenous platforms. The developers of an OpenCL library utilize all OpenCL compatible devices (CPUs, GPUs, DSPs, FPGAs etc) they find on a computer / device and assign the right tasks to the right processor.

Keep in mind that as a user of OpenCV library you are not developing any OpenCL library. In fact you are not even a user of the OpenCL library because all the details are hidden behind the transparent API/TAPI.

config

cmake config by default for compiling OpenCV:

    WITH_OPENCL ON

example

Mat<

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