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add countNonZero to Matrix operations

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This commit is contained in:
Tim Park 2013-07-29 12:54:38 -07:00
parent 363b950f1e
commit d60e3d11d5
3 changed files with 21 additions and 0 deletions
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11
src/Matrix.cc
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@ -61,6 +61,7 @@ Matrix::Init(Handle<Object> target) {
NODE_SET_PROTOTYPE_METHOD(constructor, "absDiff", AbsDiff); NODE_SET_PROTOTYPE_METHOD(constructor, "absDiff", AbsDiff);
NODE_SET_PROTOTYPE_METHOD(constructor, "addWeighted", AddWeighted); NODE_SET_PROTOTYPE_METHOD(constructor, "addWeighted", AddWeighted);
NODE_SET_PROTOTYPE_METHOD(constructor, "bitwiseXor", BitwiseXor); NODE_SET_PROTOTYPE_METHOD(constructor, "bitwiseXor", BitwiseXor);
NODE_SET_PROTOTYPE_METHOD(constructor, "countNonZero", CountNonZero);
NODE_SET_PROTOTYPE_METHOD(constructor, "split", Split); NODE_SET_PROTOTYPE_METHOD(constructor, "split", Split);
NODE_SET_PROTOTYPE_METHOD(constructor, "canny", Canny); NODE_SET_PROTOTYPE_METHOD(constructor, "canny", Canny);
NODE_SET_PROTOTYPE_METHOD(constructor, "dilate", Dilate); NODE_SET_PROTOTYPE_METHOD(constructor, "dilate", Dilate);
@ -816,6 +817,16 @@ Matrix::BitwiseXor(const v8::Arguments& args) {
return scope.Close(v8::Null()); return scope.Close(v8::Null());
} }
Handle<Value>
Matrix::CountNonZero(const v8::Arguments& args) {
HandleScope scope;
Matrix *self = ObjectWrap::Unwrap<Matrix>(args.This());
double count = (double)cv::countNonZero(self->mat);
return scope.Close(v8::Number::New(count));
}
Handle<Value> Handle<Value>
Matrix::Split(const v8::Arguments& args) { Matrix::Split(const v8::Arguments& args) {
HandleScope scope; HandleScope scope;

1
src/Matrix.h
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@ -56,6 +56,7 @@ class Matrix: public node::ObjectWrap {
JSFUNC(AbsDiff) JSFUNC(AbsDiff)
JSFUNC(AddWeighted) JSFUNC(AddWeighted)
JSFUNC(BitwiseXor) JSFUNC(BitwiseXor)
JSFUNC(CountNonZero)
JSFUNC(Split) JSFUNC(Split)
JSFUNC(Canny) JSFUNC(Canny)
JSFUNC(Dilate) JSFUNC(Dilate)

9
test/unit.js
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@ -216,6 +216,15 @@ vows.describe('Smoke Tests OpenCV').addBatch({
assert.equal(xored.get(0,0), 0); assert.equal(xored.get(0,0), 0);
} }
, ".countNonZero": function(cv) {
cv.readImage("./examples/mona.png", function(err, im) {
assert.ok(im);
im.convertGrayscale();
assert.equal(im.countNonZero(), 378000);
});
}
} }