i want to know how to implement blendlinear() function

opencv

asked 2019-01-17 08:03:28 -0600

Allaye
59 ●1 ●5

updated 2019-01-17 08:06:09 -0600

i want to blend two images together, and i have used the addweighted and i understand how it works, but am trying to use the blendlinear function(to my own understanding it can be used to blend images) but i cant actually understand how to use it.

blendLinear (   InputArray  src1, // this are Mat images and should be the same size as the src2
InputArray  src2,
InputArray  weights1,
InputArray  weights2, // i don't actually understand this two
OutputArray     dst     // the destination image it should also bee the same size and type as src1
)

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can you show, what you tried (code) ? it's unclear.

berak ( 2019-01-17 08:05:07 -0600 )edit

am talking about the blendlinear() function, this is the explanation on the website

Performs linear blending of two images:

dst(i,j)=weights1(i,j)∗src1(i,j)+weights2(i,j)∗src2(i,j) Parameters src1 It has a type of CV_8UC(n) or CV_32FC(n), where n is a positive integer.

src2 It has the same type and size as src1.

weights1 It has a type of CV_32FC1 and the same size with src1.

weights2 It has a type of CV_32FC1 and the same size with src1.

dst It is created if it does not have the same size and type with src1.

Allaye ( 2019-01-17 08:08:37 -0600 )edit

not sure, can you please explain "Weight per pixel " for me please..

Allaye ( 2019-01-17 08:09:59 -0600 )edit

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Mat_<uchar> m1(2,2); // 1st "demo" image m1 << 1,1, 1,1; Mat_<uchar> m2(2,2); // 2nd image m2 << 3,3, 3,3; Mat_<float> w1(2,2); // weights w1 << .2, .4, // 0.2 * 1st_pixel, 0.4 * 2nd_pixel, etc. .4, .2; Mat w2 = 1.0f - w1; Mat result; blendLinear(m1, m2, w1, w2, result); cout << result << endl; [ 3, 2; 2, 3]

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no please, thanks

Allaye ( 2019-01-17 08:31:22 -0600 )edit

also see this (maybe related)

sturkmen ( 2019-01-17 10:05:58 -0600 )edit

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i want to know how to implement blendlinear() function

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