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| author | Tomas Farago <sensej007@email.cz> | 2020-02-03 10:54:07 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-02-03 10:54:07 +0100 |
| commit | cea58a20c8cf42b0c0914de776ad6051973289fa (patch) | |
| tree | 48e1da9c3bfa1b65ebea39502716dba94d25f376 | |
| parent | 8b6edc6dee57facb45980ff07be9150c6f96b5f2 (diff) | |
| parent | 4127bc8721d8e7bc70cc26d7938f18b304e5defe (diff) | |
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Merge pull request #191 from ufo-kit/fix-phaseretrieval
Fix phaseretrieval
| -rw-r--r-- | src/kernels/phase-retrieval.cl | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/src/kernels/phase-retrieval.cl b/src/kernels/phase-retrieval.cl index 43cdc88..6f43efb 100644 --- a/src/kernels/phase-retrieval.cl +++ b/src/kernels/phase-retrieval.cl @@ -49,10 +49,11 @@ kernel void ctf_method(float prefac, float regularize_rate, float binary_filter_rate, float frequency_cutoff, global float *output) { COMMON_SETUP; - if (sin_arg >= frequency_cutoff) + + if (fabs (sin_value + pow(10, -regularize_rate)) < 1e-7 || sin_arg >= frequency_cutoff || (idx == 0 && idy == 0)) output[idy * width + idx] = 0.0f; else - output[idy * width + idx] = 0.5f * sign(sin_value) / (fabs(sin_value) + pow(10, -regularize_rate)); + output[idy * width + idx] = 0.5f / (sin_value + pow(10, -regularize_rate)); } kernel void @@ -60,19 +61,22 @@ qp_method(float prefac, float regularize_rate, float binary_filter_rate, float f { COMMON_SETUP; - if (sin_arg > M_PI_2_F && fabs (sin_value) < binary_filter_rate || sin_arg >= frequency_cutoff) + if (sin_arg > M_PI_2_F && fabs (sin_value + pow(10, -regularize_rate)) < binary_filter_rate || + sin_arg >= frequency_cutoff || (idx == 0 && idy == 0)) + /* Zero frequency (idx == 0 && idy == 0) must be set to zero explicitly */ output[idy * width + idx] = 0.0f; else - output[idy * width + idx] = 0.5f * sign(sin_value) / (fabs(sin_value) + pow(10, -regularize_rate)); + output[idy * width + idx] = 0.5f / (sin_value + pow(10, -regularize_rate)); } kernel void qp2_method(float prefac, float regularize_rate, float binary_filter_rate, float frequency_cutoff, global float *output) { COMMON_SETUP; - float cacl_filter_value = 0.5f * sign(sin_value) / (fabs(sin_value) + pow(10, -regularize_rate)); + float cacl_filter_value = 0.5f / (sin_value + pow(10, -regularize_rate)); - if (sin_arg > M_PI_2_F && fabs(sin_value) < binary_filter_rate || sin_arg >= frequency_cutoff) + if (sin_arg > M_PI_2_F && fabs(sin_value + pow(10, -regularize_rate)) < binary_filter_rate || + sin_arg >= frequency_cutoff || (idx == 0 && idy == 0)) output[idy * width + idx] = sign(cacl_filter_value) / (2 * (binary_filter_rate + pow(10, -regularize_rate))); else output[idy * width + idx] = cacl_filter_value; |