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Merge pull request #315 from adius/add-otsus-method

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Add otsus method
This commit is contained in:
Peter Braden 2015-10-09 10:21:14 +02:00
commit d291d89771
1 changed files with 50 additions and 12 deletions
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62
src/Matrix.cc
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@ -1,6 +1,7 @@
#include "Contours.h"
#include "Matrix.h"
#include "OpenCV.h"
#include <string.h>
#include <nan.h>
Nan::Persistent<FunctionTemplate> Matrix::constructor;
@ -1629,25 +1630,62 @@ NAN_METHOD(Matrix::Threshold) {
double threshold = info[0]->NumberValue();
double maxVal = info[1]->NumberValue();
int typ = cv::THRESH_BINARY;
if (info.Length() == 3) {
// typ = info[2]->IntegerValue();
if (info.Length() >= 3) {
Nan::Utf8String typstr(info[2]);
if (strcmp(*typstr, "Binary") == 0) {
typ = 0;
// Uses default value
}
if (strcmp(*typstr, "Binary Inverted") == 0) {
typ = 1;
else if (strcmp(*typstr, "Binary Inverted") == 0) {
typ = cv::THRESH_BINARY_INV;
}
if (strcmp(*typstr, "Threshold Truncated") == 0) {
typ = 2;
else if (strcmp(*typstr, "Threshold Truncated") == 0) {
typ = cv::THRESH_TRUNC;
}
if (strcmp(*typstr, "Threshold to Zero") == 0) {
typ = 3;
else if (strcmp(*typstr, "Threshold to Zero") == 0) {
typ = cv::THRESH_TOZERO;
}
if (strcmp(*typstr, "Threshold to Zero Inverted") == 0) {
typ = 4;
else if (strcmp(*typstr, "Threshold to Zero Inverted") == 0) {
typ = cv::THRESH_TOZERO_INV;
}
else {
char *typeString = *typstr;
char text[] = "\" is no supported binarization technique. "
"Use \"Binary\" (default), \"Binary Inverted\", "
"\"Threshold Truncated\", \"Threshold to Zero\" "
"or \"Threshold to Zero Inverted\"";
char errorMessage[strlen(typeString) + strlen(text) + 2];
strcpy(errorMessage, "\"");
strcat(errorMessage, typeString);
strcat(errorMessage, text);
Nan::ThrowError(errorMessage);
return;
}
}
if (info.Length() >= 4) {
Nan::Utf8String algorithm(info[3]);
if (strcmp(*algorithm, "Simple") == 0) {
// Uses default
}
else if (strcmp(*algorithm, "Otsu") == 0) {
typ += 8;
}
else {
char *algo = *algorithm;
char text[] = "\" is no supported threshold algorithm. "
"Use \"Simple\" (default) or \"Otsu\".";
char errorMessage[strlen(algo) + strlen(text) + 2];
strcpy(errorMessage, "\"");
strcat(errorMessage, algo);
strcat(errorMessage, text);
Nan::ThrowError(errorMessage);
return;
}
}