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/*
* unit tests for MeterOCR.cpp
* Author: Matthias Behr, 2015
*/
#include "protocols/MeterOCR.hpp"
#include "gtest/gtest.h"
#include "json/json.h"
// this is a dirty hack. we should think about better ways/rules to link against the
// test objects.
// e.g. single files in the tests directory that just include the real file. This way one
// will avoid multiple includes of the same file in a different test case
// (or linking against the real file from the CMakeLists.txt)
#include "../src/protocols/MeterOCRTesseract.cpp"
TEST(MeterOCRTesseract, basic_prepared) {
std::list<Option> options;
options.push_back(Option("file", (char *)"tests/meterOCR/sensus_test1_nronly2.png"));
ASSERT_THROW(MeterOCR m2(options), vz::VZException); // missing boundingboxes parameter
struct json_object *jsa =
json_tokener_parse("[{\"boundingboxes\":[{\"identifier\": \"id1\"}]}]");
ASSERT_TRUE(jsa != 0);
options.push_back(Option("recognizer", jsa));
json_object_put(jsa);
MeterOCR m(options);
ASSERT_EQ(SUCCESS, m.open());
std::vector<Reading> rds;
rds.resize(1);
EXPECT_EQ(1, m.read(rds, 1));
double value = rds[0].value();
EXPECT_EQ(432, value);
ASSERT_EQ(0, m.close());
}
TEST(MeterOCRTesseract, basic_scaler) {
std::list<Option> options;
options.push_back(Option("file", (char *)"tests/meterOCR/sensus_test1_nronly2.png"));
ASSERT_THROW(MeterOCR m2(options), vz::VZException); // missing boundingboxes parameter
struct json_object *jsa = json_tokener_parse("[{\"boundingboxes\":[{\"identifier\": \"id1\", "
"\"scaler\": -2, \"confidence_id\":\"cid1\"}]}]");
ASSERT_TRUE(jsa != 0);
options.push_back(Option("recognizer", jsa));
json_object_put(jsa);
MeterOCR m(options);
ASSERT_EQ(SUCCESS, m.open());
std::vector<Reading> rds;
rds.resize(2);
EXPECT_EQ(2, m.read(rds, 2));
double value = rds[0].value();
EXPECT_TRUE(abs(4.32 - value) < 0.001);
ReadingIdentifier *p = rds[1].identifier().get();
StringIdentifier *o = dynamic_cast<StringIdentifier *>(p);
StringIdentifier s1("cid1");
EXPECT_TRUE(o->operator==(s1));
value = rds[1].value();
EXPECT_GT(value, 80.0); // expect conf. >80
ASSERT_EQ(0, m.close());
}
TEST(MeterOCRTesseract, basic_two_boxes_same_id) {
std::list<Option> options;
options.push_back(Option("file", (char *)"tests/meterOCR/sensus_test1_nronly2.png"));
ASSERT_THROW(MeterOCR m2(options), vz::VZException); // missing boundingboxes parameter
struct json_object *jsa = json_tokener_parse(
"[{\"boundingboxes\":[{\"identifier\": \"id1\"},{\"identifier\": \"id1\"}]}]");
ASSERT_TRUE(jsa != 0);
options.push_back(Option("recognizer", jsa));
json_object_put(jsa);
MeterOCR m(options);
ASSERT_EQ(SUCCESS, m.open());
std::vector<Reading> rds;
rds.resize(1);
EXPECT_EQ(1, m.read(rds, 1));
double value = rds[0].value();
EXPECT_EQ(2.0 * 432, value);
ASSERT_EQ(0, m.close());
}
/* the better we make the image preparation the more some edges get detected as digits
TEST(MeterOCRTesseract, basic_not_prepared)
{
std::list<Option> options;
options.push_back(Option("file", (char*)"tests/meterOCR/sensus_test1_nronly1.png"));
options.push_back(Option("rotate", -2.0)); // rotate by -2deg (counterclockwise)
struct json_object *jso = json_tokener_parse("[{\"identifier\": \"water cons\", \"box\":
{\"x1\": 42, \"x2\": 395, \"y1\": 10, \"y2\": 65}}]"); // should detect 00432m
options.push_back(Option("boundingboxes", jso));
json_object_put(jso);
MeterOCR m(options);
ASSERT_EQ(SUCCESS, m.open());
std::vector<Reading> rds;
rds.resize(1);
EXPECT_EQ(1, m.read(rds, 1));
double value = rds[0].value();
EXPECT_EQ(432, value);
ASSERT_EQ(0, m.close());
}
*/
TEST(MeterOCRTesseract, basic_not_prepared_digits) {
std::list<Option> options;
options.push_back(Option("file", (char *)"tests/meterOCR/sensus_test1_nronly1.png"));
options.push_back(Option("rotate", -2.0)); // rotate by -2deg (counterclockwise)
struct json_object *jso = json_tokener_parse("[{\"boundingboxes\":[\
{\"identifier\": \"water cons\", \"scaler\":4,\"digit\":true, \"box\": {\"x1\": 41, \"x2\": 75, \"y1\": 20, \"y2\": 66}},\
{\"identifier\": \"water cons\", \"scaler\":3,\"digit\":true, \"box\": {\"x1\": 104, \"x2\": 136, \"y1\": 20, \"y2\": 66}},\
{\"identifier\": \"water cons\", \"scaler\":2,\"digit\":true, \"box\": {\"x1\": 166, \"x2\": 195, \"y1\": 20, \"y2\": 66}},\
{\"identifier\": \"water cons\", \"scaler\":1,\"digit\":true, \"box\": {\"x1\": 229, \"x2\": 264, \"y1\": 20, \"y2\": 66}},\
{\"identifier\": \"water cons\", \"scaler\":0,\"digit\":true, \"box\": {\"x1\": 290, \"x2\": 325, \"y1\": 20, \"y2\": 66}, \"confidence_id\":\"confidence\"}\
]}]"); // should detect 00432
options.push_back(Option("recognizer", jso));
json_object_put(jso);
MeterOCR m(options);
ASSERT_EQ(SUCCESS, m.open());
std::vector<Reading> rds;
rds.resize(2);
EXPECT_EQ(2, m.read(rds, 2));
double value = rds[0].value();
EXPECT_EQ(432, value);
value = rds[1].value();
EXPECT_GT(value, 80.0); // expect conf. >80
ASSERT_EQ(0, m.close());
}
TEST(MeterOCRTesseract, DISABLED_emh_test2_not_prepared) // TODO enable once lcd digits are working
{
std::list<Option> options;
options.push_back(Option("file", (char *)"tests/meterOCR/emh_test2.png"));
options.push_back(Option("gamma", 0.8));
options.push_back(Option("gamma_min", 50));
options.push_back(Option("gamma_max", 180));
// options.push_back(Option("rotate", -2.0)); // rotate by -2deg (counterclockwise)
struct json_object *jso = json_tokener_parse("[{\"boundingboxes\":[\
{\"identifier\": \"cons HT\", \"box\": {\"x1\": 122, \"x2\": 235, \"y1\": 8, \"y2\": 54}},\
{\"identifier\": \"cons NT\", \"box\": {\"x1\": 122 , \"x2\": 235, \"y1\": 58, \"y2\": 104}}]}]");
options.push_back(Option("recognizer", jso));
json_object_put(jso);
MeterOCR m(options);
ASSERT_EQ(SUCCESS, m.open());
std::vector<Reading> rds;
rds.resize(2);
EXPECT_EQ(2, m.read(rds, 2));
double value = rds[0].value();
EXPECT_EQ(757.6, value); // 2nd value 11557.0
value = rds[1].value();
EXPECT_EQ(557.0,
value); // 2nd value 11557.0 but we moved the boundingbox due to some light effect.
ASSERT_EQ(0, m.close());
}
TEST(MeterOCRTesseract,
DISABLED_emh_test2_not_prepared_digits) // TODO enable once lcd digits are working
{
std::list<Option> options;
options.push_back(Option("file", (char *)"tests/meterOCR/emh_test2.png"));
options.push_back(Option("gamma", 0.8));
options.push_back(Option("gamma_min", 50));
options.push_back(Option("gamma_max", 180));
// options.push_back(Option("rotate", -2.0)); // rotate by -2deg (counterclockwise)
struct json_object *jso = json_tokener_parse("[{\"boundingboxes\":[\
{\"identifier\": \"cons HT\", \"digit\":true, \"scaler\":2,\"box\": {\"x1\": 122, \"x2\": 151, \"y1\": 8, \"y2\": 54}},\
{\"identifier\": \"cons HT\", \"digit\":true, \"scaler\":1,\"box\": {\"x1\": 152, \"x2\": 180, \"y1\": 8, \"y2\": 54}},\
{\"identifier\": \"cons HT\", \"digit\":true, \"scaler\":0,\"box\": {\"x1\": 181, \"x2\": 208, \"y1\": 8, \"y2\": 54}},\
{\"identifier\": \"cons HT\", \"digit\":true, \"scaler\":-1,\"box\": {\"x1\": 212, \"x2\": 235, \"y1\": 8, \"y2\": 54}},\
{\"identifier\": \"cons NT\", \"digit\":true, \"scaler\":2,\"box\": {\"x1\": 122, \"x2\": 151, \"y1\": 58, \"y2\": 104}},\
{\"identifier\": \"cons NT\", \"digit\":true, \"scaler\":1,\"box\": {\"x1\": 152, \"x2\": 180, \"y1\": 58, \"y2\": 104}},\
{\"identifier\": \"cons NT\", \"digit\":true, \"scaler\":0,\"box\": {\"x1\": 181, \"x2\": 208, \"y1\": 58, \"y2\": 104}},\
{\"identifier\": \"cons NT\", \"digit\":true, \"scaler\":-1,\"box\": {\"x1\": 212, \"x2\": 235, \"y1\": 58, \"y2\":104}}\
]}]");
options.push_back(Option("recognizer", jso));
json_object_put(jso);
MeterOCR m(options);
ASSERT_EQ(SUCCESS, m.open());
std::vector<Reading> rds;
rds.resize(2);
EXPECT_EQ(2, m.read(rds, 2));
double value = rds[0].value();
EXPECT_EQ(757.6, value); // 2nd value 11557.0
value = rds[1].value();
EXPECT_EQ(557.0,
value); // 2nd value 11557.0 but we moved the boundingbox due to some light effect.
ASSERT_EQ(0, m.close());
}
TEST(MeterOCRTesseract, basic2_not_prepared_digits) {
std::list<Option> options;
options.push_back(Option("file", (char *)"tests/meterOCR/img.png"));
options.push_back(Option("rotate", -2.0)); // rotate by -2deg (counterclockwise)
struct json_object *jso = json_tokener_parse("[{\"boundingboxes\":[\
{\"identifier\": \"water cons\", \"scaler\":4,\"digit\":true, \"box\": {\"x1\": 465, \"x2\": 487, \"y1\": 358, \"y2\": 395}},\
{\"identifier\": \"water cons\", \"scaler\":3,\"digit\":true, \"box\": {\"x1\": 502, \"x2\": 525, \"y1\": 358, \"y2\": 395}},\
{\"identifier\": \"water cons\", \"scaler\":2,\"digit\":true, \"box\": {\"x1\": 538, \"x2\": 562, \"y1\": 358, \"y2\": 395}},\
{\"identifier\": \"water cons\", \"scaler\":1,\"digit\":true, \"box\": {\"x1\": 575, \"x2\": 599, \"y1\": 358, \"y2\": 395}},\
{\"identifier\": \"water cons\", \"scaler\":0,\"digit\":true, \"box\": {\"x1\": 610, \"x2\": 637, \"y1\": 358, \"y2\": 395}}\
]}]"); // should detect 00434
options.push_back(Option("recognizer", jso));
json_object_put(jso);
MeterOCR m(options);
ASSERT_EQ(SUCCESS, m.open());
for (int i = 0; i < 4; ++i) {
std::vector<Reading> rds;
rds.resize(1);
EXPECT_EQ(1, m.read(rds, 1));
double value = rds[0].value();
EXPECT_EQ(434, value);
m.set_forced_file_changed(); // otherwise next read call will assume image is unchanged
}
ASSERT_EQ(0, m.close());
}
TEST(MeterOCRTesseract, basic2_not_prepared_autofix) {
std::list<Option> options;
options.push_back(Option("file", (char *)"tests/meterOCR/img2.png"));
options.push_back(Option("rotate", -2.0)); // rotate by -2deg (counterclockwise)
struct json_object *jso = json_tokener_parse("[{\"boundingboxes\":[\
{\"identifier\": \"water cons\", \"scaler\":4,\"digit\":true, \"box\": {\"x1\": 465, \"x2\": 487, \"y1\": 358, \"y2\": 395}},\
{\"identifier\": \"water cons\", \"scaler\":3,\"digit\":true, \"box\": {\"x1\": 502, \"x2\": 525, \"y1\": 358, \"y2\": 395}},\
{\"identifier\": \"water cons\", \"scaler\":2,\"digit\":true, \"box\": {\"x1\": 538, \"x2\": 562, \"y1\": 358, \"y2\": 395}},\
{\"identifier\": \"water cons\", \"scaler\":1,\"digit\":true, \"box\": {\"x1\": 575, \"x2\": 599, \"y1\": 358, \"y2\": 395}},\
{\"identifier\": \"water cons\", \"scaler\":0,\"digit\":true, \"box\": {\"x1\": 610, \"x2\": 637, \"y1\": 358, \"y2\": 395}, \"confidence_id\": \"conf\"}\
]}]"); // should detect 00434
options.push_back(Option("recognizer", jso));
json_object_put(jso);
jso = json_tokener_parse("\
{\"range\": 20, \"x\": 465, \"y\":395}\
");
options.push_back(Option("autofix", jso));
json_object_put(jso);
MeterOCR m(options);
ASSERT_EQ(SUCCESS, m.open());
for (int i = 0; i < 1; ++i) {
std::vector<Reading> rds;
rds.resize(2);
EXPECT_EQ(2, m.read(rds, 2));
double value = rds[0].value();
EXPECT_EQ(435, value);
value = rds[1].value();
EXPECT_GT(value, 80.0); // expect conf. >80
}
ASSERT_EQ(0, m.close());
}
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