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Merge pull request #158 from salmanulhaq/issue-147

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Added nchannel check. Fixes issue #147
This commit is contained in:
Peter Braden 2014-09-10 08:28:12 +02:00
commit 38a672d499
2 changed files with 24 additions and 10 deletions
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2
examples/convert_image.js
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@ -9,6 +9,8 @@ cv.readImage("./mona.png", function(err, im) {
img_hsv.convertHSVscale(); img_hsv.convertHSVscale();
img_gray.convertGrayscale(); img_gray.convertGrayscale();
console.log(img_gray.pixel(100,100));
im.save("/tmp/nor.png"); im.save("/tmp/nor.png");
img_hsv.save("/tmp/hsv.png"); img_hsv.save("/tmp/hsv.png");
img_gray.save("/tmp/gray.png"); img_gray.save("/tmp/gray.png");

32
src/Matrix.cc
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@ -212,19 +212,32 @@ Matrix::Pixel(const Arguments& args){
Local<Object> objColor = args[2]->ToObject(); Local<Object> objColor = args[2]->ToObject();
self->mat.at<cv::Vec3b>(y, x)[0] = (uchar) objColor->Get(0)->IntegerValue(); if(self->mat.channels() == 3){
self->mat.at<cv::Vec3b>(y, x)[1] = (uchar) objColor->Get(1)->IntegerValue(); self->mat.at<cv::Vec3b>(y, x)[0] = (uchar) objColor->Get(0)->IntegerValue();
self->mat.at<cv::Vec3b>(y, x)[2] = (uchar) objColor->Get(2)->IntegerValue(); self->mat.at<cv::Vec3b>(y, x)[1] = (uchar) objColor->Get(1)->IntegerValue();
self->mat.at<cv::Vec3b>(y, x)[2] = (uchar) objColor->Get(2)->IntegerValue();
}
else if(self->mat.channels() == 1)
self->mat.at<uchar>(y,x) = (uchar) objColor->Get(0)->IntegerValue();
return scope.Close(args[2]->ToObject()); return scope.Close(args[2]->ToObject());
}else{ }else{
cv::Vec3b intensity = self->mat.at<cv::Vec3b>(y, x);
v8::Local<v8::Array> arr = v8::Array::New(3); if(self->mat.channels() == 3){
arr->Set(0, Number::New( intensity[0] )); cv::Vec3b intensity = self->mat.at<cv::Vec3b>(y, x);
arr->Set(1, Number::New( intensity[1] ));
arr->Set(2, Number::New( intensity[2] ));
return scope.Close(arr);
v8::Local<v8::Array> arr = v8::Array::New(3);
arr->Set(0, Number::New( intensity[0] ));
arr->Set(1, Number::New( intensity[1] ));
arr->Set(2, Number::New( intensity[2] ));
return scope.Close(arr);
}
else if(self->mat.channels() == 1){
uchar intensity = self->mat.at<uchar>(y, x);
return scope.Close(Number::New(intensity));
}
} }
return scope.Close(Undefined()); return scope.Close(Undefined());
@ -305,7 +318,6 @@ Matrix::Clone(const Arguments& args){
return scope.Close(im_h); return scope.Close(im_h);
} }
Handle<Value> Handle<Value>
Matrix::Row(const Arguments& args){ Matrix::Row(const Arguments& args){
SETUP_FUNCTION(Matrix) SETUP_FUNCTION(Matrix)