tesseract 4.1.1
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lstmeval.cpp
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1
2// File: lstmeval.cpp
3// Description: Evaluation program for LSTM-based networks.
4// Author: Ray Smith
5//
6// (C) Copyright 2016, Google Inc.
7// Licensed under the Apache License, Version 2.0 (the "License");
8// you may not use this file except in compliance with the License.
9// You may obtain a copy of the License at
10// http://www.apache.org/licenses/LICENSE-2.0
11// Unless required by applicable law or agreed to in writing, software
12// distributed under the License is distributed on an "AS IS" BASIS,
13// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14// See the License for the specific language governing permissions and
15// limitations under the License.
17
18#ifdef GOOGLE_TESSERACT
19#include "base/commandlineflags.h"
20#endif
21#include "commontraining.h"
22#include "genericvector.h"
23#include "lstmtester.h"
24#include "strngs.h"
25#include "tprintf.h"
26
27static STRING_PARAM_FLAG(model, "", "Name of model file (training or recognition)");
28static STRING_PARAM_FLAG(traineddata, "",
29 "If model is a training checkpoint, then traineddata must "
30 "be the traineddata file that was given to the trainer");
31static STRING_PARAM_FLAG(eval_listfile, "",
32 "File listing sample files in lstmf training format.");
33static INT_PARAM_FLAG(max_image_MB, 2000, "Max memory to use for images.");
34static INT_PARAM_FLAG(verbosity, 1,
35 "Amount of diagnosting information to output (0-2).");
36
37int main(int argc, char **argv) {
38 tesseract::CheckSharedLibraryVersion();
39 ParseArguments(&argc, &argv);
40 if (FLAGS_model.empty()) {
41 tprintf("Must provide a --model!\n");
42 return 1;
43 }
44 if (FLAGS_eval_listfile.empty()) {
45 tprintf("Must provide a --eval_listfile!\n");
46 return 1;
47 }
49 if (!mgr.Init(FLAGS_model.c_str())) {
50 if (FLAGS_traineddata.empty()) {
51 tprintf("Must supply --traineddata to eval a training checkpoint!\n");
52 return 1;
53 }
54 tprintf("%s is not a recognition model, trying training checkpoint...\n",
55 FLAGS_model.c_str());
56 if (!mgr.Init(FLAGS_traineddata.c_str())) {
57 tprintf("Failed to load language model from %s!\n",
58 FLAGS_traineddata.c_str());
59 return 1;
60 }
61 GenericVector<char> model_data;
62 if (!tesseract::LoadDataFromFile(FLAGS_model.c_str(), &model_data)) {
63 tprintf("Failed to load model from: %s\n", FLAGS_model.c_str());
64 return 1;
65 }
66 mgr.OverwriteEntry(tesseract::TESSDATA_LSTM, &model_data[0],
67 model_data.size());
68 }
69 tesseract::LSTMTester tester(static_cast<int64_t>(FLAGS_max_image_MB) *
70 1048576);
71 if (!tester.LoadAllEvalData(FLAGS_eval_listfile.c_str())) {
72 tprintf("Failed to load eval data from: %s\n", FLAGS_eval_listfile.c_str());
73 return 1;
74 }
75 double errs = 0.0;
76 STRING result =
77 tester.RunEvalSync(0, &errs, mgr,
78 /*training_stage (irrelevant)*/ 0, FLAGS_verbosity);
79 tprintf("%s\n", result.string());
80 return 0;
81} /* main */
DLLSYM void tprintf(const char *format,...)
Definition: tprintf.cpp:35
#define INT_PARAM_FLAG(name, val, comment)
#define STRING_PARAM_FLAG(name, val, comment)
void ParseArguments(int *argc, char ***argv)
int main(int argc, char **argv)
Definition: lstmeval.cpp:37
bool LoadDataFromFile(const char *filename, GenericVector< char > *data)
int size() const
Definition: genericvector.h:72
Definition: strngs.h:45
const char * string() const
Definition: strngs.cpp:194
void OverwriteEntry(TessdataType type, const char *data, int size)
bool Init(const char *data_file_name)
bool LoadAllEvalData(const STRING &filenames_file)
Definition: lstmtester.cpp:32
STRING RunEvalSync(int iteration, const double *training_errors, const TessdataManager &model_mgr, int training_stage, int verbosity)
Definition: lstmtester.cpp:84