diff options
Diffstat (limited to 'utils')
| -rw-r--r-- | utils/GraphUtils.cpp | 10 | ||||
| -rw-r--r-- | utils/GraphUtils.h | 12 |
2 files changed, 20 insertions, 2 deletions
diff --git a/utils/GraphUtils.cpp b/utils/GraphUtils.cpp index f07323cdf8..f33d8a2e2f 100644 --- a/utils/GraphUtils.cpp +++ b/utils/GraphUtils.cpp @@ -57,16 +57,22 @@ std::pair<arm_compute::TensorShape, arm_compute::PermutationVector> compute_perm } } // namespace +TFPreproccessor::TFPreproccessor(float min_range, float max_range) + : _min_range(min_range), _max_range(max_range) +{ +} void TFPreproccessor::preprocess(ITensor &tensor) { Window window; window.use_tensor_dimensions(tensor.info()->tensor_shape()); + const float range = _max_range - _min_range; + execute_window_loop(window, [&](const Coordinates & id) { const float value = *reinterpret_cast<float *>(tensor.ptr_to_element(id)); - float res = value / 255.f; // Normalize to [0, 1] - res = (res - 0.5f) * 2.f; // Map to [-1, 1] + float res = value / 255.f; // Normalize to [0, 1] + res = res * range + _min_range; // Map to [min_range, max_range] *reinterpret_cast<float *>(tensor.ptr_to_element(id)) = res; }); } diff --git a/utils/GraphUtils.h b/utils/GraphUtils.h index 52180ca495..bc7699b70c 100644 --- a/utils/GraphUtils.h +++ b/utils/GraphUtils.h @@ -77,7 +77,19 @@ private: class TFPreproccessor : public IPreprocessor { public: + /** Constructor + * + * @param[in] min_range Min normalization range. (Defaults to -1.f) + * @param[in] max_range Max normalization range. (Defaults to 1.f) + */ + TFPreproccessor(float min_range = -1.f, float max_range = 1.f); + + // Inherited overriden methods void preprocess(ITensor &tensor) override; + +private: + float _min_range; + float _max_range; }; /** PPM writer class */ |