generic-library/opencv
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Fix instability of Luv/Lab color conversions

Browse Source
This commit is contained in:
Andrey Kamaev 2012-10-11 15:00:43 +04:00
parent 7ee6040192
commit df94591336
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
modules/imgproc/src/color.cpp
View File

@ -124,8 +124,8 @@ template<typename _Tp> static void splineBuild(const _Tp* f, int n, _Tp* tab)
// interpolates value of a function at x, 0 <= x <= n using a cubic spline. // interpolates value of a function at x, 0 <= x <= n using a cubic spline.
template<typename _Tp> static inline _Tp splineInterpolate(_Tp x, const _Tp* tab, int n) template<typename _Tp> static inline _Tp splineInterpolate(_Tp x, const _Tp* tab, int n)
{ {
int ix = cvFloor(x); // don't touch this function without urgent need - some versions of gcc fail to inline it correctly
ix = std::min(std::max(ix, 0), n-1); int ix = std::min(std::max(int(x), 0), n-1);
x -= ix; x -= ix;
tab += ix*4; tab += ix*4;
return ((tab[3]*x + tab[2])*x + tab[1])*x + tab[0]; return ((tab[3]*x + tab[2])*x + tab[1])*x + tab[0];