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Added histogram EMD comparison support for image_diff. #693

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Oct 18, 2019
Merged

Added histogram EMD comparison support for image_diff. #693

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11 changes: 7 additions & 4 deletions samples/image_diff.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -26,9 +26,7 @@

namespace {

enum class CompareAlgorithm {
kRMSE = 0,
};
enum class CompareAlgorithm { kRMSE = 0, kHISTOGRAM_EMD = 1 };

struct Options {
std::vector<std::string> input_filenames;
Expand All @@ -41,7 +39,8 @@ const char kUsage[] = R"(Usage: image_diff [options] image1.png image2.png

options:
--rmse -- Compare using RMSE algorithm (default).
-t | --tolerance <float> -- Tolerance value for RMSE comparison.
--histogram_emd -- Compare using histogram EMD algorithm.
-t | --tolerance <float> -- Tolerance value for comparison.
-h | --help -- This help text.
)";

Expand All @@ -53,6 +52,8 @@ bool ParseArgs(const std::vector<std::string>& args, Options* opts) {
return true;
} else if (arg == "--rmse") {
opts->compare_algorithm = CompareAlgorithm::kRMSE;
} else if (arg == "--histogram_emd") {
opts->compare_algorithm = CompareAlgorithm::kHISTOGRAM_EMD;
} else if (arg == "-t" || arg == "--tolerance") {
++i;
if (i >= args.size()) {
Expand Down Expand Up @@ -136,6 +137,8 @@ int main(int argc, const char** argv) {
amber::Result res;
if (options.compare_algorithm == CompareAlgorithm::kRMSE)
res = buffers[0].CompareRMSE(&buffers[1], options.tolerance);
else if (options.compare_algorithm == CompareAlgorithm::kHISTOGRAM_EMD)
res = buffers[0].CompareHistogramEMD(&buffers[1], options.tolerance);

if (res.IsSuccess())
std::cout << "Images similar" << std::endl;
Expand Down