Top "Interpolation" questions

Anything related to function interpolation, i.e. the mathematical techniques for estimating the (unknown) value of a function in a point on the basis of a set of known values in other (usually nearby) points.

(Qt C++) Resize pixmap and KEEP pixelation?

In my project I have a QLabel that I change the pixmap frequently like this: ui->frameLabel->setPixmap(…

c++ qt interpolation image-resizing qpixmap
Interpolating along the 2-D image slices

I have a set of 100 2-D image slices of the same size. I have used MATLAB to stack them to …

matlab 2d volume interpolation visualize
What to do if I want 3D spline/smooth interpolation of random unstructured data?

I was inspired by this answer by @James to see how griddata and map_coordinates might be used. In the …

python scipy interpolation
Python interp1d vs. UnivariateSpline

I'm trying to port some MatLab code over to Scipy, and I've tried two different functions from scipy.interpolate, interp1…

python matlab numpy scipy interpolation
extracting a quadrilateral image to a rectangle

BOUNTY UPDATE Following Denis's link, this is how to use the threeblindmiceandamonkey code: // the destination rect is our 'in' quad …

graphics pixel interpolation
Conversion between RGB and RYB color spaces

I am currently trying to convert colours between RGB (red, green, blue) colour space and RYB (red, yellow, blue) colour …

math rgb interpolation newtons-method
Speedup scipy griddata for multiple interpolations between two irregular grids

I have several values that are defined on the same irregular grid (x, y, z) that I want to interpolate …

python numpy scipy interpolation qhull
How to interpolate hue values in HSV colour space?

I'm trying to interpolate between two colours in HSV colour space to produce a smooth colour gradient. I'm using a …

javascript colors interpolation gradient hsv
How to interpolate a color sequence?

I need to interpolate or change gradually a sequence of colors, so it goes from colorA to colorB to colorC …

c++ colors sequence interpolation openframeworks
Pandas interpolate within a groupby

I've got a dataframe with the following information: filename val1 val2 t 1 file1.csv 5 10 2 file1.csv NaN NaN 3 file1.csv 15 20 6 …

python pandas group-by interpolation