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cv::magnitude; cv::corner**

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This commit is contained in:
Ilya Lavrenov
2014-10-12 03:43:06 -07:00
parent fb97273b3c
commit d5f006eee5
3 changed files with 53 additions and 10 deletions
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14
modules/core/src/mathfuncs.cpp
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@@ -293,17 +293,15 @@ static void Magnitude_32f(const float* x, const float* y, float* mag, int len)
}
}
#elif CV_NEON
float CV_DECL_ALIGNED(16) m[4];
for( ; i <= len - 4; i += 4 )
{
float32x4_t v_x = vld1q_f32(x + i), v_y = vld1q_f32(y + i);
vst1q_f32(m, vaddq_f32(vmulq_f32(v_x, v_x), vmulq_f32(v_y, v_y)));
mag[i] = std::sqrt(m[0]);
mag[i+1] = std::sqrt(m[1]);
mag[i+2] = std::sqrt(m[2]);
mag[i+3] = std::sqrt(m[3]);
vst1q_f32(mag + i, cv_vsqrtq_f32(vmlaq_f32(vmulq_f32(v_x, v_x), v_y, v_y)));
}
for( ; i <= len - 2; i += 2 )
{
float32x2_t v_x = vld1_f32(x + i), v_y = vld1_f32(y + i);
vst1_f32(mag + i, cv_vsqrt_f32(vmla_f32(vmul_f32(v_x, v_x), v_y, v_y)));
}
#endif