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Finish standalone thumbnailer under

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This commit is contained in:
Dušan Poizl
2025-03-10 11:01:45 +01:00
parent 96a89bff92
commit bd45900821
6 changed files with 38 additions and 22 deletions
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rawimage.cpp
+9 -3
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@@ -198,7 +198,7 @@ void calcStats(const T *data, size_t n, size_t w, RawImage::Stats &stats)
auto findMedian = [histSize](std::vector<uint32_t> &histogram, size_t n) -> size_t
{
size_t histSum = 0;
for(size_t o=0; o < histSize; o++)
for(size_t o=1; o < histSize; o++)
{
histSum += histogram[o];
if(histSum >= n/2)
@@ -299,7 +299,8 @@ void calcStats(const T *data, size_t n, size_t w, RawImage::Stats &stats)
double sum2 = (double)sum[i] * sum[i];
stats.m_stdDev[i] = std::sqrt((sumSq[i] - sum2 / na[i]) / (na[i] - 1));
uint32_t median = findMedian(histogram[i], na[i]);
size_t naclip = na[i] - histogram[i][0];
uint32_t median = findMedian(histogram[i], naclip);
stats.m_median[i] = median;
std::vector<uint32_t> madHist(histSize, 0);
madHist[0] = histogram[i][median];
@@ -308,7 +309,7 @@ void calcStats(const T *data, size_t n, size_t w, RawImage::Stats &stats)
if(median + o < histSize)madHist[o] += histogram[i][median + o];
if(o <= median)madHist[o] += histogram[i][median - o];
}
stats.m_mad[i] = findMedian(madHist, na[i]);
stats.m_mad[i] = findMedian(madHist, naclip);
if constexpr(!std::numeric_limits<T>::is_integer)
{
stats.m_median[i] /= 65535.0;
@@ -403,6 +404,11 @@ uint32_t RawImage::norm() const
}
uint32_t RawImage::widthBytes() const
{
return m_ch * m_width * typeSize(m_type);
}
uint32_t RawImage::widthSamples() const
{
return m_ch * m_width;
}