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Introduces yuv420p(nv12) to rgb and bgr color conversion

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This commit is contained in:
smirnov-alexey
2019-02-15 09:36:33 +03:00
parent 54a1bbe1c4
commit 406392e13d
6 changed files with 160 additions and 0 deletions
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modules/gapi/include/opencv2/gapi/imgproc.hpp
+58
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@@ -114,6 +114,34 @@ namespace imgproc {
}
};
G_TYPED_KERNEL(GNV12toRGB, <GMat(GMat, GMat)>, "org.opencv.imgproc.colorconvert.nv12torgb") {
static GMatDesc outMeta(GMatDesc in_y, GMatDesc in_uv) {
GAPI_Assert(in_y.chan == 1);
GAPI_Assert(in_uv.chan == 2);
GAPI_Assert(in_y.depth == CV_8U);
GAPI_Assert(in_uv.depth == CV_8U);
GAPI_Assert(in_uv.size.width % 2 == 0);
GAPI_Assert(in_uv.size.height % 2 == 0);
GAPI_Assert(in_y.size.width == 2 * in_uv.size.width);
GAPI_Assert(in_y.size.height == 2 * in_uv.size.height);
return in_y.withType(CV_8U, 3); // type will be CV_8UC3;
}
};
G_TYPED_KERNEL(GNV12toBGR, <GMat(GMat, GMat)>, "org.opencv.imgproc.colorconvert.nv12tobgr") {
static GMatDesc outMeta(GMatDesc in_y, GMatDesc in_uv) {
GAPI_Assert(in_y.chan == 1);
GAPI_Assert(in_uv.chan == 2);
GAPI_Assert(in_y.depth == CV_8U);
GAPI_Assert(in_uv.depth == CV_8U);
GAPI_Assert(in_uv.size.width % 2 == 0);
GAPI_Assert(in_uv.size.height % 2 == 0);
GAPI_Assert(in_y.size.width == 2 * in_uv.size.width);
GAPI_Assert(in_y.size.height == 2 * in_uv.size.height);
return in_y.withType(CV_8U, 3); // type will be CV_8UC3;
}
};
G_TYPED_KERNEL(GRGB2Lab, <GMat(GMat)>, "org.opencv.imgproc.colorconvert.rgb2lab") {
static GMatDesc outMeta(GMatDesc in) {
return in; // type still remains CV_8UC3;
@@ -728,6 +756,36 @@ Output image must be 8-bit unsigned 3-channel image @ref CV_8UC3.
@sa RGB2Lab, RGB2YUV
*/
GAPI_EXPORTS GMat YUV2RGB(const GMat& src);
/** @brief Converts an image from NV12 (YUV420p) color space to RGB.
The function converts an input image from NV12 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 @ref CV_8UC3.
@note Function textual ID is "org.opencv.imgproc.colorconvert.nv12torgb"
@param src_y input image: 8-bit unsigned 1-channel image @ref CV_8UC1.
@param src_uv input image: 8-bit unsigned 2-channel image @ref CV_8UC2.
@sa YUV2RGB, NV12toBGR
*/
GAPI_EXPORTS GMat NV12toRGB(const GMat& src_y, const GMat& src_uv);
/** @brief Converts an image from NV12 (YUV420p) color space to BGR.
The function converts an input image from NV12 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 @ref CV_8UC3.
@note Function textual ID is "org.opencv.imgproc.colorconvert.nv12tobgr"
@param src_y input image: 8-bit unsigned 1-channel image @ref CV_8UC1.
@param src_uv input image: 8-bit unsigned 2-channel image @ref CV_8UC2.
@sa YUV2BGR, NV12toRGB
*/
GAPI_EXPORTS GMat NV12toBGR(const GMat& src_y, const GMat& src_uv);
//! @} gapi_colorconvert
} //namespace gapi
} //namespace cv