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Diffstat (limited to 'samples/KeywordSpotting/src/Decoder.cpp')
-rw-r--r-- | samples/KeywordSpotting/src/Decoder.cpp | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/samples/KeywordSpotting/src/Decoder.cpp b/samples/KeywordSpotting/src/Decoder.cpp new file mode 100644 index 0000000000..107e25caa9 --- /dev/null +++ b/samples/KeywordSpotting/src/Decoder.cpp @@ -0,0 +1,35 @@ +// +// Copyright © 2021 Arm Ltd and Contributors. All rights reserved. +// SPDX-License-Identifier: MIT +// + +#include "Decoder.hpp" + +std::pair<int, float> kws::Decoder::decodeOutput(std::vector<int8_t>& modelOutput) +{ + + std::vector<float> dequantisedOutput; + //Normalise vector values into new vector + for (auto& value : modelOutput) + { + float normalisedModelOutput = this->quantisationScale * (static_cast<float >(value) - + static_cast<float >(this->quantisationOffset)); + dequantisedOutput.push_back(normalisedModelOutput); + } + + //Get largest value in modelOutput + const std::vector<float>::iterator& maxElementIterator = std::max_element(dequantisedOutput.begin(), + dequantisedOutput.end()); + //Find the labelMapIndex of the largest value which corresponds to a key in a label map + int labelMapIndex = static_cast<int>(std::distance(dequantisedOutput.begin(), maxElementIterator)); + + //Round to two DP + float maxModelOutputProbability = std::roundf((*maxElementIterator) * 100) / 100; + + return std::make_pair(labelMapIndex, maxModelOutputProbability); + +} + + + + |