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2026-07-13 13:33:03 +08:00

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//
// histograms_test.cpp
// MNN
//
// Created by MNN on 2022/07/26.
// Copyright © 2018, Alibaba Group Holding Limited
//
#include <gtest/gtest.h>
#include <opencv2/imgproc/imgproc.hpp>
#include "test_env.hpp"
#ifdef MNN_HISTOGRAMS_TEST
static Env<uint8_t> testEnv(img_name, false);
// histograms
TEST(histograms, channel_0) {
std::vector<cv::Mat> images {testEnv.cvSrc};
std::vector<int> histSize {256};
std::vector<int> channels {0};
std::vector<float> ranges {0., 256.};
cv::calcHist(images, channels, cv::Mat(), testEnv.cvDst, histSize, ranges);
testEnv.mnnDst = calcHist({testEnv.mnnSrc}, channels, nullptr, histSize, ranges);
bool eq = _equal<float, float>(testEnv.cvDst, testEnv.mnnDst);
ASSERT_TRUE(eq);
}
TEST(histograms, channel_2) {
std::vector<cv::Mat> images {testEnv.cvSrc};
std::vector<int> histSize {256};
std::vector<int> channels {2};
std::vector<float> ranges {0., 256.};
cv::calcHist(images, channels, cv::Mat(), testEnv.cvDst, histSize, ranges);
testEnv.mnnDst = calcHist({testEnv.mnnSrc}, channels, nullptr, histSize, ranges);
bool eq = _equal<float, float>(testEnv.cvDst, testEnv.mnnDst);
ASSERT_TRUE(eq);
}
#endif