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Move preprocessing out of main

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This commit is contained in:
Matúš Námešný
2024-09-02 22:09:06 +02:00
parent 0c8ca44680
commit 0da98e2742
4 changed files with 54 additions and 29 deletions
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32
examples/inception_v3/inception_v3.cpp
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@@ -3,34 +3,8 @@
#include <cudanet.cuh>
#include <iostream>
#include <opencv2/opencv.hpp>
#include <vector>
std::vector<float>
readAndNormalizeImage(const std::string &imagePath, int width, int height) {
// Read the image using OpenCV
cv::Mat image = cv::imread(imagePath, cv::IMREAD_COLOR);
// Resize and normalize the image
cv::resize(image, image, cv::Size(width, height));
image.convertTo(image, CV_32FC3, 1.0 / 255.0);
// Normalize the image https://pytorch.org/hub/pytorch_vision_alexnet/
cv::Mat mean(image.size(), CV_32FC3, cv::Scalar(0.485, 0.456, 0.406));
cv::Mat std(image.size(), CV_32FC3, cv::Scalar(0.229, 0.224, 0.225));
cv::subtract(image, mean, image);
cv::divide(image, std, image);
// Convert the 3D image matrix to a 1D array of floats
std::vector<float> imageData;
for (int c = 0; c < image.channels(); ++c) {
for (int i = 0; i < image.rows; ++i) {
for (int j = 0; j < image.cols; ++j) {
imageData.push_back(image.at<cv::Vec3f>(i, j)[c]);
}
}
}
return imageData;
}
int main(int argc, const char *const argv[]) {
if (argc != 3) {
@@ -55,12 +29,12 @@ int main(int argc, const char *const argv[]) {
inception_v3->loadWeights(modelWeightsPath);
std::vector<float> imageData =
readAndNormalizeImage(imagePath, inputSize.first, inputSize.second);
readAndNormalizeImage(imagePath, inputSize.first, inputSize.first);
// Print the size of the image data
const float *output = inception_v3->predict(imageData.data());
// Get max index
// Get max index
int maxIndex = 0;
for (int i = 0; i < outputSize; i++) {
if (output[i] > output[maxIndex]) {