Linear Interpolation meaning

opencv

asked 2017-08-03 00:45:26 -0600

arqam
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I am going through a paper in computer vision, and I come through this line :

the L values, or the luminance values, for
these pixels are then linearly and horizontally interpolated between
the pixels on the (one pixel wide) brightest column in region B, and
the pixels in regions A and C.

So, what does linear and horizontal interpolation actually mean wrt image processing?

Paper : http://140.118.9.222/publications/jou...

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answered 2017-08-03 03:32:07 -0600

StevenPuttemans

20029 ●16 ●82 ●207 http://stevenputtemans...

There is basically 2 concepts here

Horizontally means in my opinion that it works on rows, not on columns
Linearly means that given two points that you actually know, all points in between are interpolated by having a value between value of pointA and value of pointB, and then the whole distance is basically 100%. If the new pixel is at distance 30% it will probably get the value that is there. Its basically what linear interpolation is ...