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Improvments fftw locallab

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This commit is contained in:
Desmis 2019-06-10 12:40:26 +02:00
parent 77befeff68
commit 91b85e40a8
1 changed files with 22 additions and 7 deletions
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27
rtengine/iplocallab.cc
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@ -3875,6 +3875,15 @@ void ImProcFunctions::retinex_pde(float *datain, float * dataout, int bfw, int b
* adapted by Jacques Desmis 2019 <jdesmis@gmail.com>
*/
/*
#ifdef RT_FFTW3F_OMP
if (multiThread) {
fftwf_init_threads();
fftwf_plan_with_nthreads ( omp_get_max_threads() );
}
#endif
*/
fftwf_plan dct_fw, dct_fw04, dct_bw;
float *data_fft, *data_fft04, *data_tmp, *data, *data_tmp04;
if (NULL == (data_tmp = (float *) fftwf_malloc(sizeof(float) * bfw * bfh))) {
@ -3945,6 +3954,7 @@ void ImProcFunctions::retinex_pde(float *datain, float * dataout, int bfw, int b
}
}
void ImProcFunctions::fftw_convol_blur(float *input, float *output, int bfw, int bfh, float radius, int fftkern)
{
/*
@ -3952,15 +3962,16 @@ void ImProcFunctions::fftw_convol_blur(float *input, float *output, int bfw, int
** when I read documentation on various FFT blur we found 2 possibilities
** 0) kernel gauss is used with "normal" datas
** 1) kernel gauss is used with FFT
** fftkern allows to change 0) or 1) and test
** fftkern allows to change 0) or 1) and test It seems the good solution is with 0, but I keep the code in case of ??
** input real datas to blur
** output real datas blurred with radius
** bfw bfh width and high area
** radius = sigma for kernel
** n_x n_y relative width and high for kernel
** Gaussain blur is given by G(x,y) = (1/2*PI*sigma) * exp(-(x2 + y2) / 2* sigma2)
** Gaussian blur is given by G(x,y) = (1/2*PI*sigma) * exp(-(x2 + y2) / 2* sigma2)
*/
BENCHFUN
float *out; //for FFT datas
float *kern;//for kernel gauss
@ -3999,7 +4010,7 @@ void ImProcFunctions::fftw_convol_blur(float *input, float *output, int bfw, int
#endif
for(int j = 0; j < bfh; j++){
int index = j * bfw;
for(int i = 0; i < bfh; i++)
for(int i = 0; i < bfw; i++)
kern[ i+ index] = exp((float)(-radius)*(n_x * i * i + n_y * j * j));//calculate Gauss kernel
}
@ -4013,7 +4024,7 @@ void ImProcFunctions::fftw_convol_blur(float *input, float *output, int bfw, int
#endif
for(int j = 0; j < bfh; j++){
int index = j * bfw;
for(int i = 0; i < bfh; i++)
for(int i = 0; i < bfw; i++)
out[i + index] *= outkern[i + index];//apply Gauss kernel whith FFT
}
@ -4026,7 +4037,7 @@ void ImProcFunctions::fftw_convol_blur(float *input, float *output, int bfw, int
#endif
for(int j = 0; j < bfh; j++){
int index = j * bfw;
for(int i = 0; i < bfh; i++)
for(int i = 0; i < bfw; i++)
out[i + index] *= exp((float)(-radius)*(n_x * i * i + n_y * j * j));//apply Gauss kernel whithout FFT
}
}
@ -4034,8 +4045,10 @@ void ImProcFunctions::fftw_convol_blur(float *input, float *output, int bfw, int
p = fftwf_plan_r2r_2d(bfh, bfw, out, output, FFTW_REDFT01, FFTW_REDFT01, FFTW_ESTIMATE);//FFT 2 dimensions backward
fftwf_execute(p);
for(int index = 0; index < image_size; index++)//restore datas
for(int index = 0; index < image_size; index++) {//restore datas
output[index] /= image_sizechange;
output[index] = CLIPLOC(output[index]);
}
fftwf_destroy_plan(p);
fftwf_free(out);
@ -4043,6 +4056,8 @@ void ImProcFunctions::fftw_convol_blur(float *input, float *output, int bfw, int
}
void ImProcFunctions::fftw_denoise(int GW, int GH, int max_numblox_W, int min_numblox_W, float **tmp1, array2D<float> *Lin, int numThreads, const struct local_params & lp, int chrom)
{