replaced factors computation by precomputed values, added kernel for

binary mode

modules/imgproc/src/moments.cpp

@@ -369,11 +369,16 @@ Moments::Moments( double _m00, double _m10, double _m01, double _m20, double _m1
 
 #ifdef HAVE_OPENCL
 
-static bool ocl_moments( InputArray _src, Moments& m)
+static bool ocl_moments( InputArray _src, Moments& m, bool binary)
 {
     const int TILE_SIZE = 32;
     const int K = 10;
-    ocl::Kernel k("moments", ocl::imgproc::moments_oclsrc, format("-D TILE_SIZE=%d", TILE_SIZE));
+
+    ocl::Kernel k = ocl::Kernel("moments", ocl::imgproc::moments_oclsrc,
+        format("-D TILE_SIZE=%d%s",
+        TILE_SIZE,
+        binary ? " -D OP_MOMENTS_BINARY" : ""));
+
     if( k.empty() )
         return false;
 
@@ -451,8 +456,8 @@ cv::Moments cv::moments( InputArray _src, bool binary )
         return m;
 
 #ifdef HAVE_OPENCL
-    if( !(ocl::useOpenCL() && type == CV_8UC1 && !binary &&
-        _src.isUMat() && ocl_moments(_src, m)) )
+    if( !(ocl::useOpenCL() && type == CV_8UC1  &&
+        _src.isUMat() && ocl_moments(_src, m, binary)) )
 #endif
     {
         Mat mat = _src.getMat();

modules/imgproc/src/opencl/moments.cl

@@ -4,6 +4,7 @@
 #error "TILE SIZE should be 32"
 #endif
 
+
 __kernel void moments(__global const uchar* src, int src_step, int src_offset,
     int src_rows, int src_cols, __global int* mom0, int xtiles)
 {
@@ -14,78 +15,127 @@ __kernel void moments(__global const uchar* src, int src_step, int src_offset,
     int ypix = y0*TILE_SIZE + y;
     __local int mom[TILE_SIZE][10];
 
-    if( x_min < src_cols && y0*TILE_SIZE < src_rows )
+    if (x_min < src_cols && y0*TILE_SIZE < src_rows)
     {
-        if( ypix < src_rows )
+        if (ypix < src_rows)
         {
             int x_max = min(src_cols - x_min, TILE_SIZE);
             __global const uchar* ptr = src + src_offset + ypix*src_step + x_min;
-            int4 S = (int4)(0,0,0,0), p;
+            int4 S = (int4)(0, 0, 0, 0), p;
 
-            #define SUM_ELEM(elem, ofs) \
+#define SUM_ELEM(elem, ofs) \
     (int4)(1, (ofs), (ofs)*(ofs), (ofs)*(ofs)*(ofs))*elem
 
             x = x_max & -4;
-            if( x_max >= 4 )
+            if (x_max >= 4)
             {
                 p = convert_int4(vload4(0, ptr));
-                S += SUM_ELEM(p.s0, 0) + SUM_ELEM(p.s1, 1) + SUM_ELEM(p.s2, 2) + SUM_ELEM(p.s3, 3);
+#ifdef OP_MOMENTS_BINARY
+                p = min(p, 1);
+#endif
+                S += (int4)(p.s0, 0, 0, 0) + (int4)(p.s1, p.s1, p.s1, p.s1) +
+                    (int4)(p.s2, p.s2 * 2, p.s2 * 4, p.s2 * 8) + (int4)(p.s3, p.s3 * 3, p.s3 * 9, p.s3 * 27);
+                //SUM_ELEM(p.s0, 0) + SUM_ELEM(p.s1, 1) + SUM_ELEM(p.s2, 2) + SUM_ELEM(p.s3, 3);
 
-                if( x_max >= 8 )
+                if (x_max >= 8)
                 {
-                    p = convert_int4(vload4(0, ptr+4));
-                    S += SUM_ELEM(p.s0, 4) + SUM_ELEM(p.s1, 5) + SUM_ELEM(p.s2, 6) + SUM_ELEM(p.s3, 7);
+                    p = convert_int4(vload4(0, ptr + 4));
+#ifdef OP_MOMENTS_BINARY
+                    p = min(p, 1);
+#endif
+                    S += (int4)(p.s0, p.s0 * 4, p.s0 * 16, p.s0 * 64) + (int4)(p.s1, p.s1 * 5, p.s1 * 25, p.s1 * 125) +
+                        (int4)(p.s2, p.s2 * 6, p.s2 * 36, p.s2 * 216) + (int4)(p.s3, p.s3 * 7, p.s3 * 49, p.s3 * 343);
+                    //SUM_ELEM(p.s0, 4) + SUM_ELEM(p.s1, 5) + SUM_ELEM(p.s2, 6) + SUM_ELEM(p.s3, 7);
 
-                    if( x_max >= 12 )
+                    if (x_max >= 12)
                     {
-                        p = convert_int4(vload4(0, ptr+8));
-                        S += SUM_ELEM(p.s0, 8) + SUM_ELEM(p.s1, 9) + SUM_ELEM(p.s2, 10) + SUM_ELEM(p.s3, 11);
+                        p = convert_int4(vload4(0, ptr + 8));
+#ifdef OP_MOMENTS_BINARY
+                        p = min(p, 1);
+#endif
+                        S += (int4)(p.s0, p.s0 * 8, p.s0 * 64, p.s0 * 512) + (int4)(p.s1, p.s1 * 9, p.s1 * 81, p.s1 * 729) +
+                            (int4)(p.s2, p.s2 * 10, p.s2 * 100, p.s2 * 1000) + (int4)(p.s3, p.s3 * 11, p.s3 * 121, p.s3 * 1331);
+                        //SUM_ELEM(p.s0, 8) + SUM_ELEM(p.s1, 9) + SUM_ELEM(p.s2, 10) + SUM_ELEM(p.s3, 11);
 
-                        if( x_max >= 16 )
+                        if (x_max >= 16)
                         {
-                            p = convert_int4(vload4(0, ptr+12));
-                            S += SUM_ELEM(p.s0, 12) + SUM_ELEM(p.s1, 13) + SUM_ELEM(p.s2, 14) + SUM_ELEM(p.s3, 15);
+                            p = convert_int4(vload4(0, ptr + 12));
+#ifdef OP_MOMENTS_BINARY
+                            p = min(p, 1);
+#endif
+                            S += (int4)(p.s0, p.s0 * 12, p.s0 * 144, p.s0 * 1728) + (int4)(p.s1, p.s1 * 13, p.s1 * 169, p.s1 * 2197) +
+                                (int4)(p.s2, p.s2 * 14, p.s2 * 196, p.s2 * 2744) + (int4)(p.s3, p.s3 * 15, p.s3 * 225, p.s3 * 3375);
+                            //SUM_ELEM(p.s0, 12) + SUM_ELEM(p.s1, 13) + SUM_ELEM(p.s2, 14) + SUM_ELEM(p.s3, 15);
                         }
                     }
                 }
             }
 
-            if( x_max >= 20 )
+            if (x_max >= 20)
             {
-                p = convert_int4(vload4(0, ptr+16));
-                S += SUM_ELEM(p.s0, 16) + SUM_ELEM(p.s1, 17) + SUM_ELEM(p.s2, 18) + SUM_ELEM(p.s3, 19);
+                p = convert_int4(vload4(0, ptr + 16));
+#ifdef OP_MOMENTS_BINARY
+                p = min(p, 1);
+#endif
+                S += (int4)(p.s0, p.s0 * 16, p.s0 * 256, p.s0 * 4096) + (int4)(p.s1, p.s1 * 17, p.s1 * 289, p.s1 * 4913) +
+                    (int4)(p.s2, p.s2 * 18, p.s2 * 324, p.s2 * 5832) + (int4)(p.s3, p.s3 * 19, p.s3 * 361, p.s3 * 6859);
+                //SUM_ELEM(p.s0, 16) + SUM_ELEM(p.s1, 17) + SUM_ELEM(p.s2, 18) + SUM_ELEM(p.s3, 19);
 
-                if( x_max >= 24 )
+                if (x_max >= 24)
                 {
-                    p = convert_int4(vload4(0, ptr+20));
-                    S += SUM_ELEM(p.s0, 20) + SUM_ELEM(p.s1, 21) + SUM_ELEM(p.s2, 22) + SUM_ELEM(p.s3, 23);
+                    p = convert_int4(vload4(0, ptr + 20));
+#ifdef OP_MOMENTS_BINARY
+                    p = min(p, 1);
+#endif
+                    S += (int4)(p.s0, p.s0 * 20, p.s0 * 400, p.s0 * 8000) + (int4)(p.s1, p.s1 * 21, p.s1 * 441, p.s1 * 9261) +
+                        (int4)(p.s2, p.s2 * 22, p.s2 * 484, p.s2 * 10648) + (int4)(p.s3, p.s3 * 23, p.s3 * 529, p.s3 * 12167);
+                    //SUM_ELEM(p.s0, 20) + SUM_ELEM(p.s1, 21) + SUM_ELEM(p.s2, 22) + SUM_ELEM(p.s3, 23);
 
-                    if( x_max >= 28 )
+                    if (x_max >= 28)
                     {
-                        p = convert_int4(vload4(0, ptr+24));
-                        S += SUM_ELEM(p.s0, 24) + SUM_ELEM(p.s1, 25) + SUM_ELEM(p.s2, 26) + SUM_ELEM(p.s3, 27);
+                        p = convert_int4(vload4(0, ptr + 24));
+#ifdef OP_MOMENTS_BINARY
+                        p = min(p, 1);
+#endif
+                        S += (int4)(p.s0, p.s0 * 24, p.s0 * 576, p.s0 * 13824) + (int4)(p.s1, p.s1 * 25, p.s1 * 625, p.s1 * 15625) +
+                            (int4)(p.s2, p.s2 * 26, p.s2 * 676, p.s2 * 17576) + (int4)(p.s3, p.s3 * 27, p.s3 * 729, p.s3 * 19683);
+                        //SUM_ELEM(p.s0, 24) + SUM_ELEM(p.s1, 25) + SUM_ELEM(p.s2, 26) + SUM_ELEM(p.s3, 27);
 
-                        if( x_max >= 32 )
+                        if (x_max >= 32)
                         {
-                            p = convert_int4(vload4(0, ptr+28));
-                            S += SUM_ELEM(p.s0, 28) + SUM_ELEM(p.s1, 29) + SUM_ELEM(p.s2, 30) + SUM_ELEM(p.s3, 31);
+                            p = convert_int4(vload4(0, ptr + 28));
+#ifdef OP_MOMENTS_BINARY
+                            p = min(p, 1);
+#endif
+                            S += (int4)(p.s0, p.s0 * 28, p.s0 * 784, p.s0 * 21952) + (int4)(p.s1, p.s1 * 29, p.s1 * 841, p.s1 * 24389) +
+                                (int4)(p.s2, p.s2 * 30, p.s2 * 900, p.s2 * 27000) + (int4)(p.s3, p.s3 * 31, p.s3 * 961, p.s3 * 29791);
+                            //SUM_ELEM(p.s0, 28) + SUM_ELEM(p.s1, 29) + SUM_ELEM(p.s2, 30) + SUM_ELEM(p.s3, 31);
                         }
                     }
                 }
             }
 
-            if( x < x_max )
+            if (x < x_max)
             {
                 int ps = ptr[x];
+#ifdef OP_MOMENTS_BINARY
+                ps = min(ps, 1);
+#endif
                 S += SUM_ELEM(ps, x);
-                if( x+1 < x_max )
+                if (x + 1 < x_max)
                 {
-                    ps = ptr[x+1];
-                    S += SUM_ELEM(ps, x+1);
-                    if( x+2 < x_max )
+                    ps = ptr[x + 1];
+#ifdef OP_MOMENTS_BINARY
+                    ps = min(ps, 1);
+#endif
+                    S += SUM_ELEM(ps, x + 1);
+                    if (x + 2 < x_max)
                     {
-                        ps = ptr[x+2];
-                        S += SUM_ELEM(ps, x+2);
+                        ps = ptr[x + 2];
+#ifdef OP_MOMENTS_BINARY
+                        ps = min(ps, 1);
+#endif
+                        S += SUM_ELEM(ps, x + 2);
                     }
                 }
             }
@@ -108,19 +158,19 @@ __kernel void moments(__global const uchar* src, int src_step, int src_offset,
             mom[y][5] = mom[y][6] = mom[y][7] = mom[y][8] = mom[y][9] = 0;
         barrier(CLK_LOCAL_MEM_FENCE);
 
-        #define REDUCE(d) \
-        if( y < d ) \
+#define REDUCE(d) \
+        if (y < d) \
         { \
-            mom[y][0] += mom[y+d][0]; \
-            mom[y][1] += mom[y+d][1]; \
-            mom[y][2] += mom[y+d][2]; \
-            mom[y][3] += mom[y+d][3]; \
-            mom[y][4] += mom[y+d][4]; \
-            mom[y][5] += mom[y+d][5]; \
-            mom[y][6] += mom[y+d][6]; \
-            mom[y][7] += mom[y+d][7]; \
-            mom[y][8] += mom[y+d][8]; \
-            mom[y][9] += mom[y+d][9]; \
+        mom[y][0] += mom[y + d][0]; \
+        mom[y][1] += mom[y + d][1]; \
+        mom[y][2] += mom[y + d][2]; \
+        mom[y][3] += mom[y + d][3]; \
+        mom[y][4] += mom[y + d][4]; \
+        mom[y][5] += mom[y + d][5]; \
+        mom[y][6] += mom[y + d][6]; \
+        mom[y][7] += mom[y + d][7]; \
+        mom[y][8] += mom[y + d][8]; \
+        mom[y][9] += mom[y + d][9]; \
         } \
         barrier(CLK_LOCAL_MEM_FENCE)
 
@@ -129,19 +179,10 @@ __kernel void moments(__global const uchar* src, int src_step, int src_offset,
         REDUCE(4);
         REDUCE(2);
 
-        if( y == 0 )
+        if (y < 10)
         {
-            __global int* momout = mom0 + (y0*xtiles + x0)*10;
-            momout[0] = mom[0][0] + mom[1][0];
-            momout[1] = mom[0][1] + mom[1][1];
-            momout[2] = mom[0][2] + mom[1][2];
-            momout[3] = mom[0][3] + mom[1][3];
-            momout[4] = mom[0][4] + mom[1][4];
-            momout[5] = mom[0][5] + mom[1][5];
-            momout[6] = mom[0][6] + mom[1][6];
-            momout[7] = mom[0][7] + mom[1][7];
-            momout[8] = mom[0][8] + mom[1][8];
-            momout[9] = mom[0][9] + mom[1][9];
+            __global int* momout = mom0 + (y0*xtiles + x0) * 10;
+            momout[y] = mom[0][y] + mom[1][y];
         }
     }
 }