OpenCV
4.0.0-beta
Open Source Computer Vision
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Functions | |
GAPI_EXPORTS GMat | cv::gapi::BGR2Gray (const GMat &src) |
Converts an image from BGR color space to gray-scaled. The conventional ranges for B, G, and R channel values are 0 to 255. Resulting gray color value computed as \[\texttt{dst} (I)= \texttt{0.114} * \texttt{src}(I).B + \texttt{0.587} * \texttt{src}(I).G + \texttt{0.299} * \texttt{src}(I).R \] . More... | |
GAPI_EXPORTS GMat | cv::gapi::BGR2LUV (const GMat &src) |
Converts an image from BGR color space to LUV color space. More... | |
GAPI_EXPORTS GMat | cv::gapi::BGR2YUV (const GMat &src) |
Converts an image from BGR color space to YUV color space. More... | |
GAPI_EXPORTS GMat | cv::gapi::LUV2BGR (const GMat &src) |
Converts an image from LUV color space to BGR color space. More... | |
GAPI_EXPORTS GMat | cv::gapi::RGB2Gray (const GMat &src) |
Converts an image from RGB color space to gray-scaled. The conventional ranges for R, G, and B channel values are 0 to 255. Resulting gray color value computed as \[\texttt{dst} (I)= \texttt{0.299} * \texttt{src}(I).R + \texttt{0.587} * \texttt{src}(I).G + \texttt{0.114} * \texttt{src}(I).B \] . More... | |
GAPI_EXPORTS GMat | cv::gapi::RGB2Gray (const GMat &src, float rY, float gY, float bY) |
GAPI_EXPORTS GMat | cv::gapi::RGB2Lab (const GMat &src) |
Converts an image from RGB color space to Lab color space. More... | |
GAPI_EXPORTS GMat | cv::gapi::RGB2YUV (const GMat &src) |
Converts an image from RGB color space to YUV color space. More... | |
GAPI_EXPORTS GMat | cv::gapi::YUV2BGR (const GMat &src) |
Converts an image from YUV color space to BGR color space. More... | |
GAPI_EXPORTS GMat | cv::gapi::YUV2RGB (const GMat &src) |
Converts an image from YUV color space to RGB. The function converts an input image from YUV color space to RGB. The conventional ranges for Y, U, and V channel values are 0 to 255. More... | |
GAPI_EXPORTS GMat cv::gapi::BGR2Gray | ( | const GMat & | src | ) |
Converts an image from BGR color space to gray-scaled. The conventional ranges for B, G, and R channel values are 0 to 255. Resulting gray color value computed as
\[\texttt{dst} (I)= \texttt{0.114} * \texttt{src}(I).B + \texttt{0.587} * \texttt{src}(I).G + \texttt{0.299} * \texttt{src}(I).R \]
.
src | input image: 8-bit unsigned 3-channel image CV_8UC1. |
GAPI_EXPORTS GMat cv::gapi::BGR2LUV | ( | const GMat & | src | ) |
Converts an image from BGR color space to LUV color space.
The function converts an input image from BGR color space to LUV. The conventional ranges for B, G, and R channel values are 0 to 255.
Output image must be 8-bit unsigned 3-channel image CV_8UC3.
src | input image: 8-bit unsigned 3-channel image CV_8UC3. |
GAPI_EXPORTS GMat cv::gapi::BGR2YUV | ( | const GMat & | src | ) |
Converts an image from BGR color space to YUV color space.
The function converts an input image from BGR color space to YUV. The conventional ranges for B, G, and R channel values are 0 to 255.
Output image must be 8-bit unsigned 3-channel image CV_8UC3.
src | input image: 8-bit unsigned 3-channel image CV_8UC3. |
GAPI_EXPORTS GMat cv::gapi::LUV2BGR | ( | const GMat & | src | ) |
Converts an image from LUV color space to BGR color space.
The function converts an input image from LUV color space to BGR. The conventional ranges for B, G, and R channel values are 0 to 255.
Output image must be 8-bit unsigned 3-channel image CV_8UC3.
src | input image: 8-bit unsigned 3-channel image CV_8UC3. |
GAPI_EXPORTS GMat cv::gapi::RGB2Gray | ( | const GMat & | src | ) |
Converts an image from RGB color space to gray-scaled. The conventional ranges for R, G, and B channel values are 0 to 255. Resulting gray color value computed as
\[\texttt{dst} (I)= \texttt{0.299} * \texttt{src}(I).R + \texttt{0.587} * \texttt{src}(I).G + \texttt{0.114} * \texttt{src}(I).B \]
.
src | input image: 8-bit unsigned 3-channel image CV_8UC1. |
GAPI_EXPORTS GMat cv::gapi::RGB2Gray | ( | const GMat & | src, |
float | rY, | ||
float | gY, | ||
float | bY | ||
) |
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Resulting gray color value computed as
\[\texttt{dst} (I)= \texttt{rY} * \texttt{src}(I).R + \texttt{gY} * \texttt{src}(I).G + \texttt{bY} * \texttt{src}(I).B \]
src | input image: 8-bit unsigned 3-channel image CV_8UC1. |
rY | float multiplier for R channel. |
gY | float multiplier for G channel. |
bY | float multiplier for B channel. |
GAPI_EXPORTS GMat cv::gapi::RGB2Lab | ( | const GMat & | src | ) |
Converts an image from RGB color space to Lab color space.
The function converts an input image from BGR color space to Lab. The conventional ranges for R, G, and B channel values are 0 to 255.
Output image must be 8-bit unsigned 3-channel image CV_8UC1.
src | input image: 8-bit unsigned 3-channel image CV_8UC1. |
GAPI_EXPORTS GMat cv::gapi::RGB2YUV | ( | const GMat & | src | ) |
Converts an image from RGB color space to YUV color space.
The function converts an input image from RGB color space to YUV. The conventional ranges for R, G, and B channel values are 0 to 255.
In case of linear transformations, the range does not matter. But in case of a non-linear transformation, an input RGB image should be normalized to the proper value range to get the correct results, like here, at RGB \(\rightarrow\) Y*u*v* transformation. Output image must be 8-bit unsigned 3-channel image CV_8UC3.
src | input image: 8-bit unsigned 3-channel image CV_8UC3. |
GAPI_EXPORTS GMat cv::gapi::YUV2BGR | ( | const GMat & | src | ) |
Converts an image from YUV color space to BGR color space.
The function converts an input image from YUV color space to BGR. The conventional ranges for B, G, and R channel values are 0 to 255.
Output image must be 8-bit unsigned 3-channel image CV_8UC3.
src | input image: 8-bit unsigned 3-channel image CV_8UC3. |
GAPI_EXPORTS GMat cv::gapi::YUV2RGB | ( | const GMat & | src | ) |
Converts an image from YUV color space to RGB. The function converts an input image from YUV color space to RGB. The conventional ranges for Y, U, and V channel values are 0 to 255.
Output image must be 8-bit unsigned 3-channel image CV_8UC3.
src | input image: 8-bit unsigned 3-channel image CV_8UC3. |