static bool ocl_moments( InputArray _src, Moments& m)
{
- const int TILE_SIZE = 16;
+ const int TILE_SIZE = 32;
const int K = 10;
ocl::Kernel k("moments", ocl::imgproc::moments_oclsrc, format("-D TILE_SIZE=%d", TILE_SIZE));
if( k.empty() )
int ntiles = xtiles*ytiles;
UMat umbuf(1, ntiles*K, CV_32S);
- size_t globalsize[] = {xtiles, ytiles};
+ size_t globalsize[] = {xtiles, sz.height}, localsize[] = {1, TILE_SIZE};
bool ok = k.args(ocl::KernelArg::ReadOnly(src),
ocl::KernelArg::PtrWriteOnly(umbuf),
- xtiles).run(2, globalsize, 0, true);
+ xtiles).run(2, globalsize, localsize, true);
if(!ok)
return false;
Mat mbuf = umbuf.getMat(ACCESS_READ);
/* See LICENSE file in the root OpenCV directory */
-#if TILE_SIZE > 16
-#error "TILE SIZE should be <= 16"
+#if TILE_SIZE != 32
+#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)
{
- int x = get_global_id(0);
- int y = get_global_id(1);
- int x_min = x*TILE_SIZE;
- int y_min = y*TILE_SIZE;
+ int x0 = get_global_id(0);
+ int y0 = get_group_id(1);
+ int x, y = get_local_id(1);
+ int x_min = x0*TILE_SIZE;
+ int ypix = y0*TILE_SIZE + y;
+ __local int mom[TILE_SIZE][10];
- if( x_min < src_cols && y_min < src_rows )
+ if( x_min < src_cols && y0*TILE_SIZE < src_rows )
{
- int x_max = min(src_cols - x_min, TILE_SIZE);
- int y_max = min(src_rows - y_min, TILE_SIZE);
- int m00=0, m10=0, m01=0, m20=0, m11=0, m02=0, m30=0, m21=0, m12=0, m03=0;
- __global const uchar* ptr = src + src_offset + y_min*src_step + x_min;
- __global int* mom = mom0 + (xtiles*y + x)*10;
- x = x_max & -4;
-
- for( y = 0; y < y_max; y++, ptr += src_step )
+ 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;
#define SUM_ELEM(elem, ofs) \
- (int4)(1, (ofs), ((ofs)*(ofs)), ((ofs)*(ofs)*(ofs)))*elem
+ (int4)(1, (ofs), (ofs)*(ofs), (ofs)*(ofs)*(ofs))*elem
+
+ x = x_max & -4;
if( x_max >= 4 )
{
p = convert_int4(vload4(0, ptr));
}
}
+ 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);
+
+ 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);
+
+ 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);
+
+ 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);
+ }
+ }
+ }
+ }
+
if( x < x_max )
{
int ps = ptr[x];
}
int sy = y*y;
- m00 += S.s0;
- m10 += S.s1;
- m01 += y*S.s0;
- m20 += S.s2;
- m11 += y*S.s1;
- m02 += sy*S.s0;
- m30 += S.s3;
- m21 += y*S.s2;
- m12 += sy*S.s1;
- m03 += y*sy*S.s0;
+
+ mom[y][0] = S.s0;
+ mom[y][1] = S.s1;
+ mom[y][2] = y*S.s0;
+ mom[y][3] = S.s2;
+ mom[y][4] = y*S.s1;
+ mom[y][5] = sy*S.s0;
+ mom[y][6] = S.s3;
+ mom[y][7] = y*S.s2;
+ mom[y][8] = sy*S.s1;
+ mom[y][9] = y*sy*S.s0;
}
+ else
+ mom[y][0] = mom[y][1] = mom[y][2] = mom[y][3] = mom[y][4] =
+ mom[y][5] = mom[y][6] = mom[y][7] = mom[y][8] = mom[y][9] = 0;
+ barrier(CLK_LOCAL_MEM_FENCE);
- mom[0] = m00;
- mom[1] = m10;
- mom[2] = m01;
- mom[3] = m20;
- mom[4] = m11;
- mom[5] = m02;
- mom[6] = m30;
- mom[7] = m21;
- mom[8] = m12;
- mom[9] = m03;
+ #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]; \
+ } \
+ barrier(CLK_LOCAL_MEM_FENCE)
+
+ REDUCE(16);
+ REDUCE(8);
+ REDUCE(4);
+ REDUCE(2);
+
+ if( y == 0 )
+ {
+ __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];
+ }
}
}