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refactor computing of scaling factor

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This commit is contained in:
marina.kolpakova 2012-11-12 11:54:40 +04:00
parent d3ac282487
commit 580d8173e5
1 changed files with 9 additions and 44 deletions
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53
modules/gpu/src/softcascade.cpp
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@ -70,6 +70,15 @@ cv::gpu::device::icf::Level::Level(int idx, const Octave& oct, const float scale
objSize.x = cv::saturate_cast<uchar>(oct.size.x * relScale);
objSize.y = cv::saturate_cast<uchar>(oct.size.y * relScale);
// according to R. Benenson, M. Mathias, R. Timofte and L. Van Gool's and Dallal's papers
if (fabs(relScale - 1.f) < FLT_EPSILON)
scaling[0] = scaling[1] = 1.f;
else
{
scaling[0] = (relScale < 1.f) ? 0.89f * ::pow(relScale, 1.099f / ::log(2)) : 1.f;
scaling[1] = relScale * relScale;
}
}
namespace cv { namespace gpu { namespace device {
@ -91,38 +100,6 @@ namespace imgproc {
struct cv::gpu::SCascade::Fields
{
struct CascadeIntrinsics
{
static const float lambda = 1.099f, a = 0.89f;
static float getFor(int channel, float scaling)
{
CV_Assert(channel < 10);
if (fabs(scaling - 1.f) < FLT_EPSILON)
return 1.f;
// according to R. Benenson, M. Mathias, R. Timofte and L. Van Gool's and Dallal's papers
static const float A[2][2] =
{ //channel <= 6, otherwise
{ 0.89f, 1.f}, // down
{ 1.00f, 1.f} // up
};
static const float B[2][2] =
{ //channel <= 6, otherwise
{ 1.099f / ::log(2), 2.f}, // down
{ 0.f, 2.f} // up
};
float a = A[(int)(scaling >= 1)][(int)(channel > 6)];
float b = B[(int)(scaling >= 1)][(int)(channel > 6)];
// printf("!!! scaling: %f %f %f -> %f\n", scaling, a, b, a * pow(scaling, b));
return a * ::pow(scaling, b);
}
};
static Fields* parseCascade(const FileNode &root, const float mins, const float maxs)
{
static const char *const SC_STAGE_TYPE = "stageType";
@ -281,8 +258,6 @@ struct cv::gpu::SCascade::Fields
int fit = fitOctave(voctaves, logScale);
Level level(fit, voctaves[fit], scale, width, height);
level.scaling[0] = CascadeIntrinsics::getFor(0, level.relScale);
level.scaling[1] = CascadeIntrinsics::getFor(9, level.relScale);
if (!width || !height)
break;
@ -294,16 +269,6 @@ struct cv::gpu::SCascade::Fields
if (::fabs(scale - maxs) < FLT_EPSILON) break;
scale = ::std::min(maxs, ::expf(::log(scale) + logFactor));
// std::cout << "level " << sc
// << " octeve "
// << vlevels[sc].octave
// << " relScale "
// << vlevels[sc].relScale
// << " " << vlevels[sc].shrScale
// << " [" << (int)vlevels[sc].objSize.x
// << " " << (int)vlevels[sc].objSize.y << "] ["
// << (int)vlevels[sc].workRect.x << " " << (int)vlevels[sc].workRect.y << "]" << std::endl;
}
cv::Mat hlevels(1, vlevels.size() * sizeof(Level), CV_8UC1, (uchar*)&(vlevels[0]) );