Internal change
PiperOrigin-RevId: 514452059
This commit is contained in:
parent
6c68d4c358
commit
c64f83fff4
|
@ -47,10 +47,11 @@ constexpr int kNumChannelsRGBA = 4;
|
|||
|
||||
enum { ATTRIB_VERTEX, ATTRIB_TEXTURE_POSITION, NUM_ATTRIBUTES };
|
||||
|
||||
// Combines an RGB cv::Mat and a single-channel alpha cv::Mat of the same
|
||||
// dimensions into an RGBA cv::Mat. Alpha may be read as uint8 or as another
|
||||
// numeric type; in the latter case, it is upscaled to values between 0 and 255
|
||||
// from an assumed input range of [0, 1). RGB and RGBA Mat's must be uchar.
|
||||
// Combines an RGB cv::Mat and an alpha cv::Mat of the same dimensions into an
|
||||
// RGBA cv::Mat. Alpha may be read as uint8 or as another numeric type; in the
|
||||
// latter case, it is upscaled to values between 0 and 255 from an assumed input
|
||||
// range of [0, 1). Only the first channel of Alpha is used. Input & output Mat
|
||||
// must be uchar.
|
||||
template <typename AlphaType>
|
||||
absl::Status MergeRGBA8Image(const cv::Mat input_mat, const cv::Mat& alpha_mat,
|
||||
cv::Mat& output_mat) {
|
||||
|
@ -71,9 +72,9 @@ absl::Status MergeRGBA8Image(const cv::Mat input_mat, const cv::Mat& alpha_mat,
|
|||
out_ptr[out_idx + 1] = in_ptr[in_idx + 1];
|
||||
out_ptr[out_idx + 2] = in_ptr[in_idx + 2];
|
||||
if constexpr (std::is_same<AlphaType, uchar>::value) {
|
||||
out_ptr[out_idx + 3] = alpha_ptr[alpha_idx + 0];
|
||||
out_ptr[out_idx + 3] = alpha_ptr[alpha_idx + 0]; // channel 0 of mask
|
||||
} else {
|
||||
const AlphaType alpha = alpha_ptr[alpha_idx + 0];
|
||||
const AlphaType alpha = alpha_ptr[alpha_idx + 0]; // channel 0 of mask
|
||||
out_ptr[out_idx + 3] = static_cast<uchar>(round(alpha * 255.0f));
|
||||
}
|
||||
}
|
||||
|
@ -291,8 +292,8 @@ absl::Status SetAlphaCalculator::RenderCpu(CalculatorContext* cc) {
|
|||
const auto& alpha_mask = cc->Inputs().Tag(kInputAlphaTag).Get<ImageFrame>();
|
||||
cv::Mat alpha_mat = mediapipe::formats::MatView(&alpha_mask);
|
||||
|
||||
const bool alpha_is_float = alpha_mat.type() == CV_32FC1;
|
||||
RET_CHECK(alpha_is_float || alpha_mat.type() == CV_8UC1);
|
||||
const bool alpha_is_float = CV_MAT_DEPTH(alpha_mat.type()) == CV_32F;
|
||||
RET_CHECK(alpha_is_float || CV_MAT_DEPTH(alpha_mat.type()) == CV_8U);
|
||||
|
||||
if (alpha_is_float) {
|
||||
MP_RETURN_IF_ERROR(
|
||||
|
|
Loading…
Reference in New Issue
Block a user