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Add scaling for float images that are out of 0.0-1.0 range

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This commit is contained in:
Dušan Poizl
2023-11-15 10:14:25 +01:00
parent 5c6df4a59f
commit a42abb05ea
3 changed files with 17 additions and 1 deletions
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imagescrollareagl.cpp
+14 -1
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@@ -113,7 +113,19 @@ void ImageWidget::setImage(std::shared_ptr<RawImage> image, int index)
m_image->generateMipMaps();
qDebug() << "setImage" << timer.elapsed();
m_unit_scale[0] = 1.0f;
m_unit_scale[1] = 0.0f;
auto &stats = image->imageStats();
if(image->type() == RawImage::FLOAT32 || image->type() == RawImage::FLOAT64)
{
float min = *std::min_element(stats.m_min, stats.m_min + 4);
float max = *std::max_element(stats.m_max, stats.m_max + 4);
if(min < 0.0f || max > 1.0f)
{
m_unit_scale[0] = 1.0f / (max - min);
m_unit_scale[1] = min * m_unit_scale[0];
}
}
if(m_debayerTex)
{
@@ -363,6 +375,7 @@ void ImageWidget::paintGL()
m_program->setUniformValue("viewport", (float)width(), (float)height());
m_program->setUniformValue("offset", std::floor(dx), std::floor(dy));
m_program->setUniformValueArray("mtf_param", m_mtfParams.blackPoint, 3, 3);
m_program->setUniformValue("unit_scale", m_unit_scale[0], m_unit_scale[1]);
m_program->setUniformValue("zoom", 1.0f/m_scale);
m_program->setUniformValue("bw", m_bwImg && !m_superpixel);
m_program->setUniformValue("false_color", m_falseColor && m_bwImg);