-rw-r--r-- | libopie2/opieui/oimageeffect.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libopie2/opieui/oimageeffect.cpp b/libopie2/opieui/oimageeffect.cpp index be47eb2..93719bc 100644 --- a/libopie2/opieui/oimageeffect.cpp +++ b/libopie2/opieui/oimageeffect.cpp @@ -2030,51 +2030,54 @@ void OImageEffect::normalize(QImage &img) } intense=0; for(high=MaxRGB; high != 0; --high){ intense+=histogram[high]; if(intense > threshold_intensity) break; } if (low == high){ // Unreasonable contrast; use zero threshold to determine boundaries. threshold_intensity=0; intense=0; for(low=0; low < MaxRGB; ++low){ intense+=histogram[low]; if(intense > threshold_intensity) break; } intense=0; for(high=MaxRGB; high != 0; --high) { intense+=histogram[high]; if(intense > threshold_intensity) break; } - if(low == high) + if(low == high) { + free(histogram); + free(normalize_map); return; // zero span bound } + } // Stretch the histogram to create the normalized image mapping. for(i=0; i <= MaxRGB; i++){ if (i < (int) low) normalize_map[i]=0; else{ if(i > (int) high) normalize_map[i]=MaxRGB; else normalize_map[i]=(MaxRGB-1)*(i-low)/(high-low); } } // Normalize if(img.depth() > 8){ // DirectClass unsigned int *data; for(y=0; y < img.height(); ++y){ data = (unsigned int *)img.scanLine(y); for(x=0; x < img.width(); ++x){ data[x] = qRgba(normalize_map[qRed(data[x])], normalize_map[qGreen(data[x])], normalize_map[qBlue(data[x])], qAlpha(data[x])); } } |