[identification] fix out of range image access #117
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simogasp
reviewed
Oct 18, 2019
| @@ -260,8 +260,8 @@ void extractSignalUsingHomography( | |||
| { | |||
| applyHomography(xRes, yRes, mHomography, x, y); | |||
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| if ( xRes >= 1.f && xRes <= src.cols-1 && | |||
| yRes >= 1.f && yRes <= src.rows-1 ) | |||
| if ( xRes >= 0.f && xRes < src.cols-1 && | |||
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either >0 or >=1 i think.
Since the other condition excludes the last pixel, I guess also the first pixel should be excluded (to take into account border pixels, i guess) as it was originally.
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The interpolation inside access to array[int(x)+0] and array[int(x)+1] and interpolate between the 2. So it's not symmetric, as we can retrieve the value on (0,0) but not the value on (width-1, 0).
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Avoid crash when the identification is looking on the image border.