Improve histogram for 8 bit images

2023-11-13 23:15:34 +01:00
parent 46b0210078
commit d462ece7c9
1 changed files with 3 additions and 2 deletions
@@ -40,7 +40,8 @@ void Histogram::paintEvent(QPaintEvent *)
                uint64_t end =(i+1) * m_histogram.size() / w;
                for(uint64_t o = start; o < end; o++)
                    sum += m_histogram[o];
-                m_points.push_back(sum);
+                if(start != end)
+                    m_points.push_back(sum);
            }
            float scale = *std::max_element(m_points.begin(), m_points.end());
            if(m_log)
@@ -57,7 +58,7 @@ void Histogram::paintEvent(QPaintEvent *)
        points.push_back(QPointF(0, h));
        for(size_t i = 0; i < m_points.size(); i++)
        {
-            points.push_back(QPointF(i, h - m_points[i] * h));
+            points.push_back(QPointF((float)i * w / m_points.size(), h - m_points[i] * h));
        }
        points.push_back(QPoint(w, h));
        painter.setBrush(Qt::gray);