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opencv/modules/core/src/matrix_expressions.cpp
Alexander Alekhin 74e4cfd1da core(MatExpr): fix warning in case of e.s == (0, 0, 0, 0)
2020-05-01 07:29:57 +00:00

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// This file is part of OpenCV project.
// It is subject to the license terms in the LICENSE file found in the top-level directory
// of this distribution and at http://opencv.org/license.html
/* ////////////////////////////////////////////////////////////////////
//
// Mat basic operations: Copy, Set
//
// */
#include "precomp.hpp"
#include <opencv2/core/utils/logger.hpp>
namespace cv
{
//This and its overload below are used in various MatExpr operator overloads
//implemented to check that Matrix operands exist.
static void checkOperandsExist(const Mat& a)
{
if (a.empty())
{
CV_Error(CV_StsBadArg, "Matrix operand is an empty matrix.");
}
}
static void checkOperandsExist(const Mat& a, const Mat& b)
{
if (a.empty() || b.empty())
{
CV_Error(CV_StsBadArg, "One or more matrix operands are empty.");
}
}
class MatOp_Identity CV_FINAL : public MatOp
{
public:
MatOp_Identity() {}
virtual ~MatOp_Identity() {}
bool elementWise(const MatExpr& /*expr*/) const CV_OVERRIDE { return true; }
void assign(const MatExpr& expr, Mat& m, int type=-1) const CV_OVERRIDE;
static void makeExpr(MatExpr& res, const Mat& m);
};
static MatOp_Identity g_MatOp_Identity;
class MatOp_AddEx CV_FINAL : public MatOp
{
public:
MatOp_AddEx() {}
virtual ~MatOp_AddEx() {}
bool elementWise(const MatExpr& /*expr*/) const CV_OVERRIDE { return true; }
void assign(const MatExpr& expr, Mat& m, int type=-1) const CV_OVERRIDE;
void add(const MatExpr& e1, const Scalar& s, MatExpr& res) const CV_OVERRIDE;
void subtract(const Scalar& s, const MatExpr& expr, MatExpr& res) const CV_OVERRIDE;
void multiply(const MatExpr& e1, double s, MatExpr& res) const CV_OVERRIDE;
void divide(double s, const MatExpr& e, MatExpr& res) const CV_OVERRIDE;
void transpose(const MatExpr& e1, MatExpr& res) const CV_OVERRIDE;
void abs(const MatExpr& expr, MatExpr& res) const CV_OVERRIDE;
static void makeExpr(MatExpr& res, const Mat& a, const Mat& b, double alpha, double beta, const Scalar& s=Scalar());
};
static MatOp_AddEx g_MatOp_AddEx;
class MatOp_Bin CV_FINAL : public MatOp
{
public:
MatOp_Bin() {}
virtual ~MatOp_Bin() {}
bool elementWise(const MatExpr& /*expr*/) const CV_OVERRIDE { return true; }
void assign(const MatExpr& expr, Mat& m, int type=-1) const CV_OVERRIDE;
void multiply(const MatExpr& e1, double s, MatExpr& res) const CV_OVERRIDE;
void divide(double s, const MatExpr& e, MatExpr& res) const CV_OVERRIDE;
static void makeExpr(MatExpr& res, char op, const Mat& a, const Mat& b, double scale=1);
static void makeExpr(MatExpr& res, char op, const Mat& a, const Scalar& s);
};
static MatOp_Bin g_MatOp_Bin;
class MatOp_Cmp CV_FINAL : public MatOp
{
public:
MatOp_Cmp() {}
virtual ~MatOp_Cmp() {}
bool elementWise(const MatExpr& /*expr*/) const CV_OVERRIDE { return true; }
void assign(const MatExpr& expr, Mat& m, int type=-1) const CV_OVERRIDE;
static void makeExpr(MatExpr& res, int cmpop, const Mat& a, const Mat& b);
static void makeExpr(MatExpr& res, int cmpop, const Mat& a, double alpha);
};
static MatOp_Cmp g_MatOp_Cmp;
class MatOp_GEMM CV_FINAL : public MatOp
{
public:
MatOp_GEMM() {}
virtual ~MatOp_GEMM() {}
bool elementWise(const MatExpr& /*expr*/) const CV_OVERRIDE { return false; }
void assign(const MatExpr& expr, Mat& m, int type=-1) const CV_OVERRIDE;
void add(const MatExpr& e1, const MatExpr& e2, MatExpr& res) const CV_OVERRIDE;
void subtract(const MatExpr& e1, const MatExpr& e2, MatExpr& res) const CV_OVERRIDE;
void multiply(const MatExpr& e, double s, MatExpr& res) const CV_OVERRIDE;
void transpose(const MatExpr& expr, MatExpr& res) const CV_OVERRIDE;
Size size(const MatExpr& expr) const CV_OVERRIDE
{
return Size(
(expr.flags & GEMM_2_T) ? expr.b.rows : expr.b.cols,
(expr.flags & GEMM_1_T) ? expr.a.cols : expr.a.rows
);
}
static void makeExpr(MatExpr& res, int flags, const Mat& a, const Mat& b,
double alpha=1, const Mat& c=Mat(), double beta=1);
};
static MatOp_GEMM g_MatOp_GEMM;
class MatOp_Invert CV_FINAL : public MatOp
{
public:
MatOp_Invert() {}
virtual ~MatOp_Invert() {}
bool elementWise(const MatExpr& /*expr*/) const CV_OVERRIDE { return false; }
void assign(const MatExpr& expr, Mat& m, int type=-1) const CV_OVERRIDE;
void matmul(const MatExpr& expr1, const MatExpr& expr2, MatExpr& res) const CV_OVERRIDE;
static void makeExpr(MatExpr& res, int method, const Mat& m);
};
static MatOp_Invert g_MatOp_Invert;
class MatOp_T CV_FINAL : public MatOp
{
public:
MatOp_T() {}
virtual ~MatOp_T() {}
bool elementWise(const MatExpr& /*expr*/) const CV_OVERRIDE { return false; }
void assign(const MatExpr& expr, Mat& m, int type=-1) const CV_OVERRIDE;
void multiply(const MatExpr& e1, double s, MatExpr& res) const CV_OVERRIDE;
void transpose(const MatExpr& expr, MatExpr& res) const CV_OVERRIDE;
static void makeExpr(MatExpr& res, const Mat& a, double alpha=1);
};
static MatOp_T g_MatOp_T;
class MatOp_Solve CV_FINAL : public MatOp
{
public:
MatOp_Solve() {}
virtual ~MatOp_Solve() {}
bool elementWise(const MatExpr& /*expr*/) const CV_OVERRIDE { return false; }
void assign(const MatExpr& expr, Mat& m, int type=-1) const CV_OVERRIDE;
static void makeExpr(MatExpr& res, int method, const Mat& a, const Mat& b);
};
static MatOp_Solve g_MatOp_Solve;
class MatOp_Initializer CV_FINAL : public MatOp
{
public:
MatOp_Initializer() {}
virtual ~MatOp_Initializer() {}
bool elementWise(const MatExpr& /*expr*/) const CV_OVERRIDE { return false; }
void assign(const MatExpr& expr, Mat& m, int type=-1) const CV_OVERRIDE;
void multiply(const MatExpr& e, double s, MatExpr& res) const CV_OVERRIDE;
static void makeExpr(MatExpr& res, int method, Size sz, int type, double alpha=1);
static void makeExpr(MatExpr& res, int method, int ndims, const int* sizes, int type, double alpha=1);
};
static MatOp_Initializer* getGlobalMatOpInitializer()
{
CV_SINGLETON_LAZY_INIT(MatOp_Initializer, new MatOp_Initializer())
}
static inline bool isIdentity(const MatExpr& e) { return e.op == &g_MatOp_Identity; }
static inline bool isAddEx(const MatExpr& e) { return e.op == &g_MatOp_AddEx; }
static inline bool isScaled(const MatExpr& e) { return isAddEx(e) && (!e.b.data || e.beta == 0) && e.s == Scalar(); }
static inline bool isBin(const MatExpr& e, char c) { return e.op == &g_MatOp_Bin && e.flags == c; }
static inline bool isCmp(const MatExpr& e) { return e.op == &g_MatOp_Cmp; }
static inline bool isReciprocal(const MatExpr& e) { return isBin(e,'/') && (!e.b.data || e.beta == 0); }
static inline bool isT(const MatExpr& e) { return e.op == &g_MatOp_T; }
static inline bool isInv(const MatExpr& e) { return e.op == &g_MatOp_Invert; }
static inline bool isSolve(const MatExpr& e) { return e.op == &g_MatOp_Solve; }
//static inline bool isGEMM(const MatExpr& e) { return e.op == &g_MatOp_GEMM; }
static inline bool isMatProd(const MatExpr& e) { return e.op == &g_MatOp_GEMM && (!e.c.data || e.beta == 0); }
static inline bool isInitializer(const MatExpr& e) { return e.op == getGlobalMatOpInitializer(); }
/////////////////////////////////////////////////////////////////////////////////////////////////////
MatOp::MatOp() {}
MatOp::~MatOp() {}
bool MatOp::elementWise(const MatExpr& /*expr*/) const
{
return false;
}
void MatOp::roi(const MatExpr& expr, const Range& rowRange, const Range& colRange, MatExpr& e) const
{
if( elementWise(expr) )
{
e = MatExpr(expr.op, expr.flags, Mat(), Mat(), Mat(),
expr.alpha, expr.beta, expr.s);
if(expr.a.data)
e.a = expr.a(rowRange, colRange);
if(expr.b.data)
e.b = expr.b(rowRange, colRange);
if(expr.c.data)
e.c = expr.c(rowRange, colRange);
}
else
{
Mat m;
expr.op->assign(expr, m);
e = MatExpr(&g_MatOp_Identity, 0, m(rowRange, colRange), Mat(), Mat());
}
}
void MatOp::diag(const MatExpr& expr, int d, MatExpr& e) const
{
if( elementWise(expr) )
{
e = MatExpr(expr.op, expr.flags, Mat(), Mat(), Mat(),
expr.alpha, expr.beta, expr.s);
if(expr.a.data)
e.a = expr.a.diag(d);
if(expr.b.data)
e.b = expr.b.diag(d);
if(expr.c.data)
e.c = expr.c.diag(d);
}
else
{
Mat m;
expr.op->assign(expr, m);
e = MatExpr(&g_MatOp_Identity, 0, m.diag(d), Mat(), Mat());
}
}
void MatOp::augAssignAdd(const MatExpr& expr, Mat& m) const
{
Mat temp;
expr.op->assign(expr, temp);
m += temp;
}
void MatOp::augAssignSubtract(const MatExpr& expr, Mat& m) const
{
Mat temp;
expr.op->assign(expr, temp);
m -= temp;
}
void MatOp::augAssignMultiply(const MatExpr& expr, Mat& m) const
{
Mat temp;
expr.op->assign(expr, temp);
m *= temp;
}
void MatOp::augAssignDivide(const MatExpr& expr, Mat& m) const
{
Mat temp;
expr.op->assign(expr, temp);
m /= temp;
}
void MatOp::augAssignAnd(const MatExpr& expr, Mat& m) const
{
Mat temp;
expr.op->assign(expr, temp);
m &= temp;
}
void MatOp::augAssignOr(const MatExpr& expr, Mat& m) const
{
Mat temp;
expr.op->assign(expr, temp);
m |= temp;
}
void MatOp::augAssignXor(const MatExpr& expr, Mat& m) const
{
Mat temp;
expr.op->assign(expr, temp);
m ^= temp;
}
void MatOp::add(const MatExpr& e1, const MatExpr& e2, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
if( this == e2.op )
{
double alpha = 1, beta = 1;
Scalar s;
Mat m1, m2;
if( isAddEx(e1) && (!e1.b.data || e1.beta == 0) )
{
m1 = e1.a;
alpha = e1.alpha;
s = e1.s;
}
else
e1.op->assign(e1, m1);
if( isAddEx(e2) && (!e2.b.data || e2.beta == 0) )
{
m2 = e2.a;
beta = e2.alpha;
s += e2.s;
}
else
e2.op->assign(e2, m2);
MatOp_AddEx::makeExpr(res, m1, m2, alpha, beta, s);
}
else
e2.op->add(e1, e2, res);
}
void MatOp::add(const MatExpr& expr1, const Scalar& s, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
Mat m1;
expr1.op->assign(expr1, m1);
MatOp_AddEx::makeExpr(res, m1, Mat(), 1, 0, s);
}
void MatOp::subtract(const MatExpr& e1, const MatExpr& e2, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
if( this == e2.op )
{
double alpha = 1, beta = -1;
Scalar s;
Mat m1, m2;
if( isAddEx(e1) && (!e1.b.data || e1.beta == 0) )
{
m1 = e1.a;
alpha = e1.alpha;
s = e1.s;
}
else
e1.op->assign(e1, m1);
if( isAddEx(e2) && (!e2.b.data || e2.beta == 0) )
{
m2 = e2.a;
beta = -e2.alpha;
s -= e2.s;
}
else
e2.op->assign(e2, m2);
MatOp_AddEx::makeExpr(res, m1, m2, alpha, beta, s);
}
else
e2.op->subtract(e1, e2, res);
}
void MatOp::subtract(const Scalar& s, const MatExpr& expr, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
Mat m;
expr.op->assign(expr, m);
MatOp_AddEx::makeExpr(res, m, Mat(), -1, 0, s);
}
void MatOp::multiply(const MatExpr& e1, const MatExpr& e2, MatExpr& res, double scale) const
{
CV_INSTRUMENT_REGION();
if( this == e2.op )
{
Mat m1, m2;
if( isReciprocal(e1) )
{
if( isScaled(e2) )
{
scale *= e2.alpha;
m2 = e2.a;
}
else
e2.op->assign(e2, m2);
MatOp_Bin::makeExpr(res, '/', m2, e1.a, scale/e1.alpha);
}
else
{
char op = '*';
if( isScaled(e1) )
{
m1 = e1.a;
scale *= e1.alpha;
}
else
e1.op->assign(e1, m1);
if( isScaled(e2) )
{
m2 = e2.a;
scale *= e2.alpha;
}
else if( isReciprocal(e2) )
{
op = '/';
m2 = e2.a;
scale *= e2.alpha;
}
else
e2.op->assign(e2, m2);
MatOp_Bin::makeExpr(res, op, m1, m2, scale);
}
}
else
e2.op->multiply(e1, e2, res, scale);
}
void MatOp::multiply(const MatExpr& expr, double s, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
Mat m;
expr.op->assign(expr, m);
MatOp_AddEx::makeExpr(res, m, Mat(), s, 0);
}
void MatOp::divide(const MatExpr& e1, const MatExpr& e2, MatExpr& res, double scale) const
{
CV_INSTRUMENT_REGION();
if( this == e2.op )
{
if( isReciprocal(e1) && isReciprocal(e2) )
MatOp_Bin::makeExpr(res, '/', e2.a, e1.a, e1.alpha/e2.alpha);
else
{
Mat m1, m2;
char op = '/';
if( isScaled(e1) )
{
m1 = e1.a;
scale *= e1.alpha;
}
else
e1.op->assign(e1, m1);
if( isScaled(e2) )
{
m2 = e2.a;
scale /= e2.alpha;
}
else if( isReciprocal(e2) )
{
m2 = e2.a;
scale /= e2.alpha;
op = '*';
}
else
e2.op->assign(e2, m2);
MatOp_Bin::makeExpr(res, op, m1, m2, scale);
}
}
else
e2.op->divide(e1, e2, res, scale);
}
void MatOp::divide(double s, const MatExpr& expr, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
Mat m;
expr.op->assign(expr, m);
MatOp_Bin::makeExpr(res, '/', m, Mat(), s);
}
void MatOp::abs(const MatExpr& expr, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
Mat m;
expr.op->assign(expr, m);
MatOp_Bin::makeExpr(res, 'a', m, Mat());
}
void MatOp::transpose(const MatExpr& expr, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
Mat m;
expr.op->assign(expr, m);
MatOp_T::makeExpr(res, m, 1);
}
void MatOp::matmul(const MatExpr& e1, const MatExpr& e2, MatExpr& res) const
{
if( this == e2.op )
{
double scale = 1;
int flags = 0;
Mat m1, m2;
if( isT(e1) )
{
flags = CV_GEMM_A_T;
scale = e1.alpha;
m1 = e1.a;
}
else if( isScaled(e1) )
{
scale = e1.alpha;
m1 = e1.a;
}
else
e1.op->assign(e1, m1);
if( isT(e2) )
{
flags |= CV_GEMM_B_T;
scale *= e2.alpha;
m2 = e2.a;
}
else if( isScaled(e2) )
{
scale *= e2.alpha;
m2 = e2.a;
}
else
e2.op->assign(e2, m2);
MatOp_GEMM::makeExpr(res, flags, m1, m2, scale);
}
else
e2.op->matmul(e1, e2, res);
}
void MatOp::invert(const MatExpr& expr, int method, MatExpr& res) const
{
Mat m;
expr.op->assign(expr, m);
MatOp_Invert::makeExpr(res, method, m);
}
Size MatOp::size(const MatExpr& expr) const
{
return !expr.a.empty() ? expr.a.size() : expr.b.empty() ? expr.b.size() : expr.c.size();
}
int MatOp::type(const MatExpr& expr) const
{
CV_INSTRUMENT_REGION();
return !expr.a.empty() ? expr.a.type() : expr.b.empty() ? expr.b.type() : expr.c.type();
}
//////////////////////////////////////////////////////////////////////////////////////////////////
MatExpr::MatExpr(const Mat& m) : op(&g_MatOp_Identity), flags(0), a(m), b(Mat()), c(Mat()), alpha(1), beta(0), s(Scalar())
{
}
MatExpr MatExpr::row(int y) const
{
MatExpr e;
op->roi(*this, Range(y, y+1), Range::all(), e);
return e;
}
MatExpr MatExpr::col(int x) const
{
MatExpr e;
op->roi(*this, Range::all(), Range(x, x+1), e);
return e;
}
MatExpr MatExpr::diag(int d) const
{
MatExpr e;
op->diag(*this, d, e);
return e;
}
MatExpr MatExpr::operator()( const Range& rowRange, const Range& colRange ) const
{
MatExpr e;
op->roi(*this, rowRange, colRange, e);
return e;
}
MatExpr MatExpr::operator()( const Rect& roi ) const
{
MatExpr e;
op->roi(*this, Range(roi.y, roi.y + roi.height), Range(roi.x, roi.x + roi.width), e);
return e;
}
Mat MatExpr::cross(const Mat& m) const
{
return ((Mat)*this).cross(m);
}
double MatExpr::dot(const Mat& m) const
{
return ((Mat)*this).dot(m);
}
MatExpr MatExpr::t() const
{
MatExpr e;
op->transpose(*this, e);
return e;
}
MatExpr MatExpr::inv(int method) const
{
MatExpr e;
op->invert(*this, method, e);
return e;
}
MatExpr MatExpr::mul(const MatExpr& e, double scale) const
{
MatExpr en;
op->multiply(*this, e, en, scale);
return en;
}
MatExpr MatExpr::mul(const Mat& m, double scale) const
{
MatExpr e;
op->multiply(*this, MatExpr(m), e, scale);
return e;
}
MatExpr operator + (const Mat& a, const Mat& b)
{
checkOperandsExist(a, b);
MatExpr e;
MatOp_AddEx::makeExpr(e, a, b, 1, 1);
return e;
}
MatExpr operator + (const Mat& a, const Scalar& s)
{
checkOperandsExist(a);
MatExpr e;
MatOp_AddEx::makeExpr(e, a, Mat(), 1, 0, s);
return e;
}
MatExpr operator + (const Scalar& s, const Mat& a)
{
checkOperandsExist(a);
MatExpr e;
MatOp_AddEx::makeExpr(e, a, Mat(), 1, 0, s);
return e;
}
MatExpr operator + (const MatExpr& e, const Mat& m)
{
MatExpr en;
e.op->add(e, MatExpr(m), en);
return en;
}
MatExpr operator + (const Mat& m, const MatExpr& e)
{
checkOperandsExist(m);
MatExpr en;
e.op->add(e, MatExpr(m), en);
return en;
}
MatExpr operator + (const MatExpr& e, const Scalar& s)
{
MatExpr en;
e.op->add(e, s, en);
return en;
}
MatExpr operator + (const Scalar& s, const MatExpr& e)
{
MatExpr en;
e.op->add(e, s, en);
return en;
}
MatExpr operator + (const MatExpr& e1, const MatExpr& e2)
{
MatExpr en;
e1.op->add(e1, e2, en);
return en;
}
MatExpr operator - (const Mat& a, const Mat& b)
{
checkOperandsExist(a, b);
MatExpr e;
MatOp_AddEx::makeExpr(e, a, b, 1, -1);
return e;
}
MatExpr operator - (const Mat& a, const Scalar& s)
{
checkOperandsExist(a);
MatExpr e;
MatOp_AddEx::makeExpr(e, a, Mat(), 1, 0, -s);
return e;
}
MatExpr operator - (const Scalar& s, const Mat& a)
{
checkOperandsExist(a);
MatExpr e;
MatOp_AddEx::makeExpr(e, a, Mat(), -1, 0, s);
return e;
}
MatExpr operator - (const MatExpr& e, const Mat& m)
{
checkOperandsExist(m);
MatExpr en;
e.op->subtract(e, MatExpr(m), en);
return en;
}
MatExpr operator - (const Mat& m, const MatExpr& e)
{
checkOperandsExist(m);
MatExpr en;
e.op->subtract(MatExpr(m), e, en);
return en;
}
MatExpr operator - (const MatExpr& e, const Scalar& s)
{
MatExpr en;
e.op->add(e, -s, en);
return en;
}
MatExpr operator - (const Scalar& s, const MatExpr& e)
{
MatExpr en;
e.op->subtract(s, e, en);
return en;
}
MatExpr operator - (const MatExpr& e1, const MatExpr& e2)
{
MatExpr en;
e1.op->subtract(e1, e2, en);
return en;
}
MatExpr operator - (const Mat& m)
{
checkOperandsExist(m);
MatExpr e;
MatOp_AddEx::makeExpr(e, m, Mat(), -1, 0);
return e;
}
MatExpr operator - (const MatExpr& e)
{
MatExpr en;
e.op->subtract(Scalar(0), e, en);
return en;
}
MatExpr operator * (const Mat& a, const Mat& b)
{
checkOperandsExist(a, b);
MatExpr e;
MatOp_GEMM::makeExpr(e, 0, a, b);
return e;
}
MatExpr operator * (const Mat& a, double s)
{
checkOperandsExist(a);
MatExpr e;
MatOp_AddEx::makeExpr(e, a, Mat(), s, 0);
return e;
}
MatExpr operator * (double s, const Mat& a)
{
checkOperandsExist(a);
MatExpr e;
MatOp_AddEx::makeExpr(e, a, Mat(), s, 0);
return e;
}
MatExpr operator * (const MatExpr& e, const Mat& m)
{
MatExpr en;
e.op->matmul(e, MatExpr(m), en);
return en;
}
MatExpr operator * (const Mat& m, const MatExpr& e)
{
checkOperandsExist(m);
MatExpr en;
e.op->matmul(MatExpr(m), e, en);
return en;
}
MatExpr operator * (const MatExpr& e, double s)
{
MatExpr en;
e.op->multiply(e, s, en);
return en;
}
MatExpr operator * (double s, const MatExpr& e)
{
MatExpr en;
e.op->multiply(e, s, en);
return en;
}
MatExpr operator * (const MatExpr& e1, const MatExpr& e2)
{
MatExpr en;
e1.op->matmul(e1, e2, en);
return en;
}
MatExpr operator / (const Mat& a, const Mat& b)
{
checkOperandsExist(a, b);
MatExpr e;
MatOp_Bin::makeExpr(e, '/', a, b);
return e;
}
MatExpr operator / (const Mat& a, double s)
{
checkOperandsExist(a);
MatExpr e;
MatOp_AddEx::makeExpr(e, a, Mat(), 1./s, 0);
return e;
}
MatExpr operator / (double s, const Mat& a)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Bin::makeExpr(e, '/', a, Mat(), s);
return e;
}
MatExpr operator / (const MatExpr& e, const Mat& m)
{
MatExpr en;
e.op->divide(e, MatExpr(m), en);
return en;
}
MatExpr operator / (const Mat& m, const MatExpr& e)
{
checkOperandsExist(m);
MatExpr en;
e.op->divide(MatExpr(m), e, en);
return en;
}
MatExpr operator / (const MatExpr& e, double s)
{
MatExpr en;
e.op->multiply(e, 1./s, en);
return en;
}
MatExpr operator / (double s, const MatExpr& e)
{
MatExpr en;
e.op->divide(s, e, en);
return en;
}
MatExpr operator / (const MatExpr& e1, const MatExpr& e2)
{
MatExpr en;
e1.op->divide(e1, e2, en);
return en;
}
MatExpr operator < (const Mat& a, const Mat& b)
{
checkOperandsExist(a, b);
MatExpr e;
MatOp_Cmp::makeExpr(e, CV_CMP_LT, a, b);
return e;
}
MatExpr operator < (const Mat& a, double s)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Cmp::makeExpr(e, CV_CMP_LT, a, s);
return e;
}
MatExpr operator < (double s, const Mat& a)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Cmp::makeExpr(e, CV_CMP_GT, a, s);
return e;
}
MatExpr operator <= (const Mat& a, const Mat& b)
{
checkOperandsExist(a, b);
MatExpr e;
MatOp_Cmp::makeExpr(e, CV_CMP_LE, a, b);
return e;
}
MatExpr operator <= (const Mat& a, double s)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Cmp::makeExpr(e, CV_CMP_LE, a, s);
return e;
}
MatExpr operator <= (double s, const Mat& a)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Cmp::makeExpr(e, CV_CMP_GE, a, s);
return e;
}
MatExpr operator == (const Mat& a, const Mat& b)
{
checkOperandsExist(a, b);
MatExpr e;
MatOp_Cmp::makeExpr(e, CV_CMP_EQ, a, b);
return e;
}
MatExpr operator == (const Mat& a, double s)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Cmp::makeExpr(e, CV_CMP_EQ, a, s);
return e;
}
MatExpr operator == (double s, const Mat& a)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Cmp::makeExpr(e, CV_CMP_EQ, a, s);
return e;
}
MatExpr operator != (const Mat& a, const Mat& b)
{
checkOperandsExist(a, b);
MatExpr e;
MatOp_Cmp::makeExpr(e, CV_CMP_NE, a, b);
return e;
}
MatExpr operator != (const Mat& a, double s)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Cmp::makeExpr(e, CV_CMP_NE, a, s);
return e;
}
MatExpr operator != (double s, const Mat& a)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Cmp::makeExpr(e, CV_CMP_NE, a, s);
return e;
}
MatExpr operator >= (const Mat& a, const Mat& b)
{
checkOperandsExist(a, b);
MatExpr e;
MatOp_Cmp::makeExpr(e, CV_CMP_GE, a, b);
return e;
}
MatExpr operator >= (const Mat& a, double s)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Cmp::makeExpr(e, CV_CMP_GE, a, s);
return e;
}
MatExpr operator >= (double s, const Mat& a)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Cmp::makeExpr(e, CV_CMP_LE, a, s);
return e;
}
MatExpr operator > (const Mat& a, const Mat& b)
{
checkOperandsExist(a, b);
MatExpr e;
MatOp_Cmp::makeExpr(e, CV_CMP_GT, a, b);
return e;
}
MatExpr operator > (const Mat& a, double s)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Cmp::makeExpr(e, CV_CMP_GT, a, s);
return e;
}
MatExpr operator > (double s, const Mat& a)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Cmp::makeExpr(e, CV_CMP_LT, a, s);
return e;
}
MatExpr min(const Mat& a, const Mat& b)
{
CV_INSTRUMENT_REGION();
checkOperandsExist(a, b);
MatExpr e;
MatOp_Bin::makeExpr(e, 'm', a, b);
return e;
}
MatExpr min(const Mat& a, double s)
{
CV_INSTRUMENT_REGION();
checkOperandsExist(a);
MatExpr e;
MatOp_Bin::makeExpr(e, 'n', a, s);
return e;
}
MatExpr min(double s, const Mat& a)
{
CV_INSTRUMENT_REGION();
checkOperandsExist(a);
MatExpr e;
MatOp_Bin::makeExpr(e, 'n', a, s);
return e;
}
MatExpr max(const Mat& a, const Mat& b)
{
CV_INSTRUMENT_REGION();
checkOperandsExist(a, b);
MatExpr e;
MatOp_Bin::makeExpr(e, 'M', a, b);
return e;
}
MatExpr max(const Mat& a, double s)
{
CV_INSTRUMENT_REGION();
checkOperandsExist(a);
MatExpr e;
MatOp_Bin::makeExpr(e, 'N', a, s);
return e;
}
MatExpr max(double s, const Mat& a)
{
CV_INSTRUMENT_REGION();
checkOperandsExist(a);
MatExpr e;
MatOp_Bin::makeExpr(e, 'N', a, s);
return e;
}
MatExpr operator & (const Mat& a, const Mat& b)
{
checkOperandsExist(a, b);
MatExpr e;
MatOp_Bin::makeExpr(e, '&', a, b);
return e;
}
MatExpr operator & (const Mat& a, const Scalar& s)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Bin::makeExpr(e, '&', a, s);
return e;
}
MatExpr operator & (const Scalar& s, const Mat& a)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Bin::makeExpr(e, '&', a, s);
return e;
}
MatExpr operator | (const Mat& a, const Mat& b)
{
checkOperandsExist(a, b);
MatExpr e;
MatOp_Bin::makeExpr(e, '|', a, b);
return e;
}
MatExpr operator | (const Mat& a, const Scalar& s)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Bin::makeExpr(e, '|', a, s);
return e;
}
MatExpr operator | (const Scalar& s, const Mat& a)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Bin::makeExpr(e, '|', a, s);
return e;
}
MatExpr operator ^ (const Mat& a, const Mat& b)
{
checkOperandsExist(a, b);
MatExpr e;
MatOp_Bin::makeExpr(e, '^', a, b);
return e;
}
MatExpr operator ^ (const Mat& a, const Scalar& s)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Bin::makeExpr(e, '^', a, s);
return e;
}
MatExpr operator ^ (const Scalar& s, const Mat& a)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Bin::makeExpr(e, '^', a, s);
return e;
}
MatExpr operator ~(const Mat& a)
{
checkOperandsExist(a);
MatExpr e;
MatOp_Bin::makeExpr(e, '~', a, Scalar());
return e;
}
MatExpr abs(const Mat& a)
{
CV_INSTRUMENT_REGION();
checkOperandsExist(a);
MatExpr e;
MatOp_Bin::makeExpr(e, 'a', a, Scalar());
return e;
}
MatExpr abs(const MatExpr& e)
{
CV_INSTRUMENT_REGION();
MatExpr en;
e.op->abs(e, en);
return en;
}
Size MatExpr::size() const
{
if( isT(*this) || isInv(*this) )
return Size(a.rows, a.cols);
if( isSolve(*this) )
return Size(b.cols, a.cols);
if( isInitializer(*this) )
return a.size();
return op ? op->size(*this) : Size();
}
int MatExpr::type() const
{
CV_INSTRUMENT_REGION();
if( isInitializer(*this) )
return a.type();
if( isCmp(*this) )
return CV_MAKETYPE(CV_8U, a.channels());
return op ? op->type(*this) : -1;
}
/////////////////////////////////////////////////////////////////////////////////////////////////////
void MatOp_Identity::assign(const MatExpr& e, Mat& m, int _type) const
{
if( _type == -1 || _type == e.a.type() )
m = e.a;
else
{
CV_Assert( CV_MAT_CN(_type) == e.a.channels() );
e.a.convertTo(m, _type);
}
}
inline void MatOp_Identity::makeExpr(MatExpr& res, const Mat& m)
{
res = MatExpr(&g_MatOp_Identity, 0, m, Mat(), Mat(), 1, 0);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////
void MatOp_AddEx::assign(const MatExpr& e, Mat& m, int _type) const
{
Mat temp, &dst = _type == -1 || e.a.type() == _type ? m : temp;
if( e.b.data )
{
if( e.s == Scalar() || !e.s.isReal() )
{
if( e.alpha == 1 )
{
if( e.beta == 1 )
cv::add(e.a, e.b, dst);
else if( e.beta == -1 )
cv::subtract(e.a, e.b, dst);
else
cv::scaleAdd(e.b, e.beta, e.a, dst);
}
else if( e.beta == 1 )
{
if( e.alpha == -1 )
cv::subtract(e.b, e.a, dst);
else
cv::scaleAdd(e.a, e.alpha, e.b, dst);
}
else
cv::addWeighted(e.a, e.alpha, e.b, e.beta, 0, dst);
if( !e.s.isReal() )
cv::add(dst, e.s, dst);
}
else
{
if (e.a.channels() > 1)
CV_LOG_ONCE_WARNING(NULL, "OpenCV/MatExpr: processing of multi-channel arrays might be changed in the future: "
"https://github.com/opencv/opencv/issues/16739");
cv::addWeighted(e.a, e.alpha, e.b, e.beta, e.s[0], dst);
}
}
else if( e.s.isReal() && (dst.data != m.data || fabs(e.alpha) != 1))
{
if (e.a.channels() > 1 && e.s[0] != 0.0)
CV_LOG_ONCE_WARNING(NULL, "OpenCV/MatExpr: processing of multi-channel arrays might be changed in the future: "
"https://github.com/opencv/opencv/issues/16739");
e.a.convertTo(m, _type, e.alpha, e.s[0]);
return;
}
else if( e.alpha == 1 )
cv::add(e.a, e.s, dst);
else if( e.alpha == -1 )
cv::subtract(e.s, e.a, dst);
else
{
e.a.convertTo(dst, e.a.type(), e.alpha);
cv::add(dst, e.s, dst);
}
if( dst.data != m.data )
dst.convertTo(m, m.type());
}
void MatOp_AddEx::add(const MatExpr& e, const Scalar& s, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
res = e;
res.s += s;
}
void MatOp_AddEx::subtract(const Scalar& s, const MatExpr& e, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
res = e;
res.alpha = -res.alpha;
res.beta = -res.beta;
res.s = s - res.s;
}
void MatOp_AddEx::multiply(const MatExpr& e, double s, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
res = e;
res.alpha *= s;
res.beta *= s;
res.s *= s;
}
void MatOp_AddEx::divide(double s, const MatExpr& e, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
if( isScaled(e) )
MatOp_Bin::makeExpr(res, '/', e.a, Mat(), s/e.alpha);
else
MatOp::divide(s, e, res);
}
void MatOp_AddEx::transpose(const MatExpr& e, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
if( isScaled(e) )
MatOp_T::makeExpr(res, e.a, e.alpha);
else
MatOp::transpose(e, res);
}
void MatOp_AddEx::abs(const MatExpr& e, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
if( (!e.b.data || e.beta == 0) && fabs(e.alpha) == 1 )
MatOp_Bin::makeExpr(res, 'a', e.a, -e.s*e.alpha);
else if( e.b.data && e.alpha + e.beta == 0 && e.alpha*e.beta == -1 )
MatOp_Bin::makeExpr(res, 'a', e.a, e.b);
else
MatOp::abs(e, res);
}
inline void MatOp_AddEx::makeExpr(MatExpr& res, const Mat& a, const Mat& b, double alpha, double beta, const Scalar& s)
{
res = MatExpr(&g_MatOp_AddEx, 0, a, b, Mat(), alpha, beta, s);
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void MatOp_Bin::assign(const MatExpr& e, Mat& m, int _type) const
{
Mat temp, &dst = _type == -1 || e.a.type() == _type ? m : temp;
if( e.flags == '*' )
cv::multiply(e.a, e.b, dst, e.alpha);
else if( e.flags == '/' && e.b.data )
cv::divide(e.a, e.b, dst, e.alpha);
else if( e.flags == '/' && !e.b.data )
cv::divide(e.alpha, e.a, dst );
else if( e.flags == '&' && e.b.data )
bitwise_and(e.a, e.b, dst);
else if( e.flags == '&' && !e.b.data )
bitwise_and(e.a, e.s, dst);
else if( e.flags == '|' && e.b.data )
bitwise_or(e.a, e.b, dst);
else if( e.flags == '|' && !e.b.data )
bitwise_or(e.a, e.s, dst);
else if( e.flags == '^' && e.b.data )
bitwise_xor(e.a, e.b, dst);
else if( e.flags == '^' && !e.b.data )
bitwise_xor(e.a, e.s, dst);
else if( e.flags == '~' && !e.b.data )
bitwise_not(e.a, dst);
else if( e.flags == 'm' )
cv::min(e.a, e.b, dst);
else if( e.flags == 'n' )
cv::min(e.a, e.s[0], dst);
else if( e.flags == 'M' )
cv::max(e.a, e.b, dst);
else if( e.flags == 'N' )
cv::max(e.a, e.s[0], dst);
else if( e.flags == 'a' && e.b.data )
cv::absdiff(e.a, e.b, dst);
else if( e.flags == 'a' && !e.b.data )
cv::absdiff(e.a, e.s, dst);
else
CV_Error(CV_StsError, "Unknown operation");
if( dst.data != m.data )
dst.convertTo(m, _type);
}
void MatOp_Bin::multiply(const MatExpr& e, double s, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
if( e.flags == '*' || e.flags == '/' )
{
res = e;
res.alpha *= s;
}
else
MatOp::multiply(e, s, res);
}
void MatOp_Bin::divide(double s, const MatExpr& e, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
if( e.flags == '/' && (!e.b.data || e.beta == 0) )
MatOp_AddEx::makeExpr(res, e.a, Mat(), s/e.alpha, 0);
else
MatOp::divide(s, e, res);
}
inline void MatOp_Bin::makeExpr(MatExpr& res, char op, const Mat& a, const Mat& b, double scale)
{
res = MatExpr(&g_MatOp_Bin, op, a, b, Mat(), scale, b.data ? 1 : 0);
}
inline void MatOp_Bin::makeExpr(MatExpr& res, char op, const Mat& a, const Scalar& s)
{
res = MatExpr(&g_MatOp_Bin, op, a, Mat(), Mat(), 1, 0, s);
}
///////////////////////////////////////////////////////////////////////////////////////////////////////
void MatOp_Cmp::assign(const MatExpr& e, Mat& m, int _type) const
{
Mat temp, &dst = _type == -1 || _type == CV_8U ? m : temp;
if( e.b.data )
cv::compare(e.a, e.b, dst, e.flags);
else
cv::compare(e.a, e.alpha, dst, e.flags);
if( dst.data != m.data )
dst.convertTo(m, _type);
}
inline void MatOp_Cmp::makeExpr(MatExpr& res, int cmpop, const Mat& a, const Mat& b)
{
res = MatExpr(&g_MatOp_Cmp, cmpop, a, b, Mat(), 1, 1);
}
inline void MatOp_Cmp::makeExpr(MatExpr& res, int cmpop, const Mat& a, double alpha)
{
res = MatExpr(&g_MatOp_Cmp, cmpop, a, Mat(), Mat(), alpha, 1);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////
void MatOp_T::assign(const MatExpr& e, Mat& m, int _type) const
{
Mat temp, &dst = _type == -1 || _type == e.a.type() ? m : temp;
cv::transpose(e.a, dst);
if( dst.data != m.data || e.alpha != 1 )
dst.convertTo(m, _type, e.alpha);
}
void MatOp_T::multiply(const MatExpr& e, double s, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
res = e;
res.alpha *= s;
}
void MatOp_T::transpose(const MatExpr& e, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
if( e.alpha == 1 )
MatOp_Identity::makeExpr(res, e.a);
else
MatOp_AddEx::makeExpr(res, e.a, Mat(), e.alpha, 0);
}
inline void MatOp_T::makeExpr(MatExpr& res, const Mat& a, double alpha)
{
res = MatExpr(&g_MatOp_T, 0, a, Mat(), Mat(), alpha, 0);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////
void MatOp_GEMM::assign(const MatExpr& e, Mat& m, int _type) const
{
Mat temp, &dst = _type == -1 || _type == e.a.type() ? m : temp;
cv::gemm(e.a, e.b, e.alpha, e.c, e.beta, dst, e.flags);
if( dst.data != m.data )
dst.convertTo(m, _type);
}
void MatOp_GEMM::add(const MatExpr& e1, const MatExpr& e2, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
bool i1 = isIdentity(e1), i2 = isIdentity(e2);
double alpha1 = i1 ? 1 : e1.alpha, alpha2 = i2 ? 1 : e2.alpha;
if( isMatProd(e1) && (i2 || isScaled(e2) || isT(e2)) )
MatOp_GEMM::makeExpr(res, (e1.flags & ~CV_GEMM_C_T)|(isT(e2) ? CV_GEMM_C_T : 0),
e1.a, e1.b, alpha1, e2.a, alpha2);
else if( isMatProd(e2) && (i1 || isScaled(e1) || isT(e1)) )
MatOp_GEMM::makeExpr(res, (e2.flags & ~CV_GEMM_C_T)|(isT(e1) ? CV_GEMM_C_T : 0),
e2.a, e2.b, alpha2, e1.a, alpha1);
else if( this == e2.op )
MatOp::add(e1, e2, res);
else
e2.op->add(e1, e2, res);
}
void MatOp_GEMM::subtract(const MatExpr& e1, const MatExpr& e2, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
bool i1 = isIdentity(e1), i2 = isIdentity(e2);
double alpha1 = i1 ? 1 : e1.alpha, alpha2 = i2 ? 1 : e2.alpha;
if( isMatProd(e1) && (i2 || isScaled(e2) || isT(e2)) )
MatOp_GEMM::makeExpr(res, (e1.flags & ~CV_GEMM_C_T)|(isT(e2) ? CV_GEMM_C_T : 0),
e1.a, e1.b, alpha1, e2.a, -alpha2);
else if( isMatProd(e2) && (i1 || isScaled(e1) || isT(e1)) )
MatOp_GEMM::makeExpr(res, (e2.flags & ~CV_GEMM_C_T)|(isT(e1) ? CV_GEMM_C_T : 0),
e2.a, e2.b, -alpha2, e1.a, alpha1);
else if( this == e2.op )
MatOp::subtract(e1, e2, res);
else
e2.op->subtract(e1, e2, res);
}
void MatOp_GEMM::multiply(const MatExpr& e, double s, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
res = e;
res.alpha *= s;
res.beta *= s;
}
void MatOp_GEMM::transpose(const MatExpr& e, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
res = e;
res.flags = (!(e.flags & CV_GEMM_A_T) ? CV_GEMM_B_T : 0) |
(!(e.flags & CV_GEMM_B_T) ? CV_GEMM_A_T : 0) |
(!(e.flags & CV_GEMM_C_T) ? CV_GEMM_C_T : 0);
swap(res.a, res.b);
}
inline void MatOp_GEMM::makeExpr(MatExpr& res, int flags, const Mat& a, const Mat& b,
double alpha, const Mat& c, double beta)
{
res = MatExpr(&g_MatOp_GEMM, flags, a, b, c, alpha, beta);
}
///////////////////////////////////////////////////////////////////////////////////////////////////////
void MatOp_Invert::assign(const MatExpr& e, Mat& m, int _type) const
{
Mat temp, &dst = _type == -1 || _type == e.a.type() ? m : temp;
cv::invert(e.a, dst, e.flags);
if( dst.data != m.data )
dst.convertTo(m, _type);
}
void MatOp_Invert::matmul(const MatExpr& e1, const MatExpr& e2, MatExpr& res) const
{
if( isInv(e1) && isIdentity(e2) )
MatOp_Solve::makeExpr(res, e1.flags, e1.a, e2.a);
else if( this == e2.op )
MatOp::matmul(e1, e2, res);
else
e2.op->matmul(e1, e2, res);
}
inline void MatOp_Invert::makeExpr(MatExpr& res, int method, const Mat& m)
{
res = MatExpr(&g_MatOp_Invert, method, m, Mat(), Mat(), 1, 0);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////
void MatOp_Solve::assign(const MatExpr& e, Mat& m, int _type) const
{
Mat temp, &dst = _type == -1 || _type == e.a.type() ? m : temp;
cv::solve(e.a, e.b, dst, e.flags);
if( dst.data != m.data )
dst.convertTo(m, _type);
}
inline void MatOp_Solve::makeExpr(MatExpr& res, int method, const Mat& a, const Mat& b)
{
res = MatExpr(&g_MatOp_Solve, method, a, b, Mat(), 1, 1);
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////
void MatOp_Initializer::assign(const MatExpr& e, Mat& m, int _type) const
{
if( _type == -1 )
_type = e.a.type();
if( e.a.dims <= 2 )
m.create(e.a.size(), _type);
else
m.create(e.a.dims, e.a.size, _type);
if( e.flags == 'I' && e.a.dims <= 2 )
setIdentity(m, Scalar(e.alpha));
else if( e.flags == '0' )
m = Scalar();
else if( e.flags == '1' )
m = Scalar(e.alpha);
else
CV_Error(CV_StsError, "Invalid matrix initializer type");
}
void MatOp_Initializer::multiply(const MatExpr& e, double s, MatExpr& res) const
{
CV_INSTRUMENT_REGION();
res = e;
res.alpha *= s;
}
inline void MatOp_Initializer::makeExpr(MatExpr& res, int method, Size sz, int type, double alpha)
{
res = MatExpr(getGlobalMatOpInitializer(), method, Mat(sz, type, (void*)(size_t)0xEEEEEEEE), Mat(), Mat(), alpha, 0);
}
inline void MatOp_Initializer::makeExpr(MatExpr& res, int method, int ndims, const int* sizes, int type, double alpha)
{
res = MatExpr(getGlobalMatOpInitializer(), method, Mat(ndims, sizes, type, (void*)(size_t)0xEEEEEEEE), Mat(), Mat(), alpha, 0);
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////
MatExpr Mat::t() const
{
CV_INSTRUMENT_REGION();
checkOperandsExist(*this);
MatExpr e;
MatOp_T::makeExpr(e, *this);
return e;
}
MatExpr Mat::inv(int method) const
{
CV_INSTRUMENT_REGION();
MatExpr e;
MatOp_Invert::makeExpr(e, method, *this);
return e;
}
MatExpr Mat::mul(InputArray m, double scale) const
{
CV_INSTRUMENT_REGION();
MatExpr e;
MatOp_Bin::makeExpr(e, '*', *this, m.getMat(), scale);
return e;
}
MatExpr Mat::zeros(int rows, int cols, int type)
{
CV_INSTRUMENT_REGION();
MatExpr e;
MatOp_Initializer::makeExpr(e, '0', Size(cols, rows), type);
return e;
}
MatExpr Mat::zeros(Size size, int type)
{
CV_INSTRUMENT_REGION();
MatExpr e;
MatOp_Initializer::makeExpr(e, '0', size, type);
return e;
}
MatExpr Mat::zeros(int ndims, const int* sizes, int type)
{
CV_INSTRUMENT_REGION();
MatExpr e;
MatOp_Initializer::makeExpr(e, '0', ndims, sizes, type);
return e;
}
MatExpr Mat::ones(int rows, int cols, int type)
{
CV_INSTRUMENT_REGION();
MatExpr e;
MatOp_Initializer::makeExpr(e, '1', Size(cols, rows), type);
return e;
}
MatExpr Mat::ones(Size size, int type)
{
CV_INSTRUMENT_REGION();
MatExpr e;
MatOp_Initializer::makeExpr(e, '1', size, type);
return e;
}
MatExpr Mat::ones(int ndims, const int* sizes, int type)
{
CV_INSTRUMENT_REGION();
MatExpr e;
MatOp_Initializer::makeExpr(e, '1', ndims, sizes, type);
return e;
}
MatExpr Mat::eye(int rows, int cols, int type)
{
CV_INSTRUMENT_REGION();
MatExpr e;
MatOp_Initializer::makeExpr(e, 'I', Size(cols, rows), type);
return e;
}
MatExpr Mat::eye(Size size, int type)
{
CV_INSTRUMENT_REGION();
MatExpr e;
MatOp_Initializer::makeExpr(e, 'I', size, type);
return e;
}
void MatExpr::swap(MatExpr& other)
{
using std::swap;
swap(op, other.op);
swap(flags, other.flags);
swap(a, other.a);
swap(b, other.b);
swap(c, other.c);
swap(alpha, other.alpha);
swap(beta, other.beta);
swap(s, other.s);
}
_InputArray::_InputArray(const MatExpr& expr)
{
if (!isIdentity(expr))
{
Mat result = expr; // TODO improve through refcount == 1 of expr.a (inplace operation is possible - except gemm?)
MatExpr result_expr(result);
swap(const_cast<MatExpr&>(expr), result_expr);
}
CV_Assert(isIdentity(expr));
init(FIXED_TYPE + FIXED_SIZE + MAT + ACCESS_READ, &expr.a);
}
} // cv::
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