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Merge pull request #16803 from TolyaTalamanov:at/yuv-to-gray

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* Implement NV12toGray

* Snapshot

* Implement NV12toGray as compound kernel

* Update gapi_imgproc_tests_inl.hpp

* Remove YUV2Gray from public API
This commit is contained in:
Anatoliy Talamanov
2020-03-24 13:51:18 +03:00
committed by GitHub
parent ea34b2fefb
commit 4d3d6230c5
6 changed files with 135 additions and 5 deletions
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modules/gapi/include/opencv2/gapi/imgproc.hpp
+30
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@@ -222,6 +222,21 @@ namespace imgproc {
}
};
G_TYPED_KERNEL(GNV12toGray, <GMat(GMat,GMat)>, "org.opencv.colorconvert.imgproc.nv12togray") {
static GMatDesc outMeta(GMatDesc inY, GMatDesc inUV) {
GAPI_Assert(inY.depth == CV_8U);
GAPI_Assert(inUV.depth == CV_8U);
GAPI_Assert(inY.chan == 1);
GAPI_Assert(inY.planar == false);
GAPI_Assert(inUV.chan == 2);
GAPI_Assert(inUV.planar == false);
GAPI_Assert(inY.size.width == 2 * inUV.size.width);
GAPI_Assert(inY.size.height == 2 * inUV.size.height);
return inY.withType(CV_8U, 1);
}
};
G_TYPED_KERNEL(GNV12toBGRp, <GMatP(GMat,GMat)>, "org.opencv.colorconvert.imgproc.nv12tobgrp") {
static GMatDesc outMeta(GMatDesc inY, GMatDesc inUV) {
GAPI_Assert(inY.depth == CV_8U);
@@ -819,6 +834,21 @@ Output image must be 8-bit unsigned 3-channel image @ref CV_8UC3.
*/
GAPI_EXPORTS GMat NV12toRGB(const GMat& src_y, const GMat& src_uv);
/** @brief Converts an image from NV12 (YUV420p) color space to gray-scaled.
The function converts an input image from NV12 color space to gray-scaled.
The conventional ranges for Y, U, and V channel values are 0 to 255.
Output image must be 8-bit unsigned 1-channel image @ref CV_8UC1.
@note Function textual ID is "org.opencv.imgproc.colorconvert.nv12togray"
@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 NV12toGray(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.