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use border extrapolation for central pixel in pyrDown

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in case if image has odd dimension
pull/3959/head
Vladislav Vinogradov 10 years ago
parent fb15bdfb21
commit 1325213303
1 changed files with 3 additions and 3 deletions
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  1. 6
      modules/gpu/src/cuda/pyr_down.cu

6
modules/gpu/src/cuda/pyr_down.cu
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@ -114,7 +114,7 @@ namespace cv { namespace gpu { namespace device
sum = 0.0625f * src(b.idx_row_low (src_y - 2), b.idx_col_high(x));
sum = sum + 0.25f * src(b.idx_row_low (src_y - 1), b.idx_col_high(x));
sum = sum + 0.375f * src(src_y , b.idx_col_high(x));
sum = sum + 0.375f * src(b.idx_row_high(src_y ), b.idx_col_high(x));
sum = sum + 0.25f * src(b.idx_row_high(src_y + 1), b.idx_col_high(x));
sum = sum + 0.0625f * src(b.idx_row_high(src_y + 2), b.idx_col_high(x));
@ -129,7 +129,7 @@ namespace cv { namespace gpu { namespace device
sum = 0.0625f * src(b.idx_row_low (src_y - 2), b.idx_col(left_x));
sum = sum + 0.25f * src(b.idx_row_low (src_y - 1), b.idx_col(left_x));
sum = sum + 0.375f * src(src_y , b.idx_col(left_x));
sum = sum + 0.375f * src(b.idx_row_high(src_y ), b.idx_col(left_x));
sum = sum + 0.25f * src(b.idx_row_high(src_y + 1), b.idx_col(left_x));
sum = sum + 0.0625f * src(b.idx_row_high(src_y + 2), b.idx_col(left_x));
@ -144,7 +144,7 @@ namespace cv { namespace gpu { namespace device
sum = 0.0625f * src(b.idx_row_low (src_y - 2), b.idx_col_high(right_x));
sum = sum + 0.25f * src(b.idx_row_low (src_y - 1), b.idx_col_high(right_x));
sum = sum + 0.375f * src(src_y , b.idx_col_high(right_x));
sum = sum + 0.375f * src(b.idx_row_high(src_y ), b.idx_col_high(right_x));
sum = sum + 0.25f * src(b.idx_row_high(src_y + 1), b.idx_col_high(right_x));
sum = sum + 0.0625f * src(b.idx_row_high(src_y + 2), b.idx_col_high(right_x));

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