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Doc: INTER_LINEAR_EXACT unsupported in remap#18582

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Doc: INTER_LINEAR_EXACT unsupported in remap#18582
opencv-pushbot merged 1 commit intoopencv:3.4from
weltonrodrigo:remap_inter_doc

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@weltonrodrigo weltonrodrigo commented Oct 13, 2020 •
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Update documentation to reflect INTER_LINEAR_EXACT being
unsupported in remap

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  • I agree to contribute to the project under Apache 2 License.
  • To the best of my knowledge, the proposed patch is not based on a code under GPL or other license that is incompatible with OpenCV
  • The PR is proposed to proper branch
  • There is reference to original bug report and related work
  • There is accuracy test, performance test and test data in opencv_extra repository, if applicable
    Patch to opencv_extra has the same branch name.
  • The feature is well documented and sample code can be built with the project CMake

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Doc: INTER_LINEAR_EXACT unsupported in remap
25163eb 
Update documentation to reflect INTER_LINEAR_EXACT being
unsupported in remap
@weltonrodrigo weltonrodrigo mentioned this pull request Oct 13, 2020
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weltonrodrigo commented Oct 13, 2020

Relevante code section in 3.4 is:

opencv/modules/imgproc/src/imgwarp.cpp

Lines 1781 to 1802 in 96e8b83

if( interpolation == INTER_NEAREST )
{
nnfunc = nn_tab[depth];
CV_Assert( nnfunc != 0 );
}
else
{
if( interpolation == INTER_LINEAR )
ifunc = linear_tab[depth];
else if( interpolation == INTER_CUBIC ){
ifunc = cubic_tab[depth];
CV_Assert( _src.channels() <= 4 );
}
else if( interpolation == INTER_LANCZOS4 ){
ifunc = lanczos4_tab[depth];
CV_Assert( _src.channels() <= 4 );
}
else
CV_Error( CV_StsBadArg, "Unknown interpolation method" );
CV_Assert( ifunc != 0 );
ctab = initInterTab2D( interpolation, fixpt );
}

@opencv-pushbot opencv-pushbot merged commit 8c4d415 into opencv:3.4 Oct 14, 2020
@alalek alalek mentioned this pull request Oct 21, 2020
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@alalek alalek mentioned this pull request Nov 27, 2020
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