cv::remap failes on 16bit arrays (Bug #160)

Added by hype blade about 15 years ago. Updated almost 15 years ago.

Status:	Done	Start date:
Priority:	High	Due date:
Assignee:	-	% Done:	0%
Category:	core
Target version:	-
Affected version:		Operating System:
Difficulty:		HW Platform:
Pull request:

Description

Hi there,
i just found out, that the cv::remap() function fails with an assertion when trying to remap a signed short array.

"OpenCV Error: Assertion failed (ifunc != 0) in unknown function, file ..\..\..\src\cv\cvimgwarp.cpp, line 2364"

//Code Example
cv::Mat_<float> mapx(240,320,pmx);
cv::Mat_<float> mapy(240,320,pmy);
cv::Mat_<short> data(240,320,pShortBuffer);
cv::Mat_<short> dataUndist;

cv::remap(data,dataUndist,mapx,mapy,cv::INTER_CUBIC);
// End of code

I did a simple workaround and first converted everything to 32bit float arrays, remapped them and then converted them back to signed short arrays, but maybe this could be better handled internally!?

Regards
Matthias