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24 lines
707 B
24 lines
707 B
#include <opencv2/viz2d/viz2d.hpp> |
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using namespace cv; |
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using namespace cv::viz; |
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constexpr int WIDTH = 1280; |
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constexpr int HEIGHT = 720; |
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int main() { |
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//Creates a Viz2D object for on screen rendering |
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Ptr<Viz2D> v2d = Viz2D::make(Size(WIDTH, HEIGHT), "Show image"); |
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//Read an image as UMat |
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UMat image = imread(samples::findFile("lena.jpg")).getUMat(ACCESS_READ); |
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UMat resized; |
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//Resize the image to framebuffer size |
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resize(image, resized, v2d->getFrameBufferSize()); |
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v2d->fb([&](const UMat& framebuffer) { |
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//Color convert the resized UMat. The framebuffer has alpha. |
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cvtColor(resized, framebuffer, COLOR_RGB2BGRA); |
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}); |
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//Display the framebuffer in the native window |
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while(v2d->display()); |
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} |
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